PNE-RB-70

PROJECT RIO BLANCO FINAL REPORT

REENTRY DRILLING AND TESTING OF RB-E-01 WELL

October 1975

NOTICE TTiis report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Energy Research and Development Administration, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infnnge privately owned rights.

CER Geonuclear Corporat ion Continental Oil Company

DISCLAIMER

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

PREFACE

This volume is a repor t on the postdetonation reen t ry and production phases of Pro jec t Rio Blanco. The predetonation and detonation phases \vere repor ted on in the Pro jec t Rio Blanco Detonation Phase Final Report . ^^'

For planning details on the Pro jec t , refer to the Projec t Rio Blanco Definition Plan^ ' in three volumes. Volume I contains a genera l descript ion of the ent i re project .

Volume II details the tasks that were needed for the operat ional scope of work related to the detonation such as site construct ion, power installation and d i s ­tr ibution, dril l ing of the emplacement well , s temming plans, operat ional safety, se i smic effects documentation, and ground water protection p rog ram, as well as severa l add-on p r o g r a m s . Volume III incorpora tes all planning of i'r.p act ivi t ies that were related to the chimney reen t ry and r e s e r v o i r testing and evaluat ion. For the most pa r t , these plans will not be repeated h e r e .

The three nuclear explosives for Pro jec t Rio Blanco w^ere detonated at 1000:00. IZto.Ol second. Mountain Daylight T ime, or 1600:00. IZlO. 01 second, Green­wich Mean Time, on May 17, 1973. The th ree explosions occurred within the For t Union and Mesaverde formations at depths of 5, 838. 5 feet, 6, 229. 7 feet, and 6,689. 5 feet. The three explosions occurred near ly simultaneously as planned and were completely contained. Available data indicate that the yields of the three explosives totalled approximately 90 kt. The elevation of the ground at the emplacement well , R B - E - 0 1 , is 6, 629. 9 feet above mean sea level . RB-E-01 is located 1, 080. 50 feet south of the north line and 1, 188. 49 feet eas t of the west line in Section 14, Township 3 South, Range 98 West of 6th P . M . , Rio Blanco County, Colorado, which cor responds to geodetic coordinates of 1 0 8 ° 2 r 5 9 " west longitude and 39°47'35" north lat i tude.

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TABLE OF CONTENTS

Page

PREFACE i

1 INTRODUCTION 1

2 GENERALIZED SITE ACTIVITIES 3 2. 1 Site P repa ra t ion 3 2 .2 Power Installation and Distribution 3 2. 3 Communications 6 2 .4 Industr ial Safety 8 2 .5 Genera l Support Requirements 10 2.6 RoUup 11 2. 7 Other Support 11

3 REENTRY DRILLING PROGRAM - RB-E-01 13 3. 1 Reentry Drilling 13 3.2 Schedule as Achieved 15

4 PRODUCTION TESTING 19 4 .1 Genera l 19 4. 2 Site Layout 19 4. 3 Equipment 19 4 . 4 Tes t Schedule - Flow Rate and Duration 24 4. 5 Automation and Ala rm System 33 4 .6 Operat ional P rocedu re s 35 4 .7 Gas Supply/Water Disposal Well 38 4 .8 Schedule 41

5 RADIOLOGICAL SAFETY AND EFFLUENT DOCUMENTATION 43 5. 1 Operat ional Guides 43 5.2 Access Control 43 5.3 Pe r sonne l Dosimetry and Bioassay 44 5. 4 Effluent Documentation During the Delay Per iod 44 5. 5 Effluent Documentation During Initial Reentry Drilling . . . 45 5. 6 Effluent Documentation During Subsequent Reentry Drilling 45 5. 7 Effluent Documentation During Product ion Testing 46 5. 8 Summary of Effluent Data 48

6 RADIOLOGICAL MONITORING IN THE ENVIRONMENT . . . 49

APPENDIX A Daily Drilling Repor ts , RB-E-01 51

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TABLE OF CONTENTS (CONT. )

APPENDIX B Daily Drilling Repor ts , Fawn Creek Government #1 Well, Reentry and Recompletion, June 18 -September 17, 1973, and Remedial Work, November 23 - December 5, 1974 61

APPENDIX C P e r m i t for Subsurface Disposal Findings of Fact , Public Hearing on Water Disposal Application . . . 75

APPENDIX D-1 Bottom Hole P r e s s u r e and T e m p e r a t u r e Data with Corresponding Flow Rates , F i r s t Product ion Tes t 87

APPENDIX D-2 Bottom Hole P r e s s u r e and Temiperature Data, F i r s t P r e s s u r e Build-Up Per iod 91

APPENDIX D-3 Bottom Hole P r e s s u r e and Tempera tu re Data, with Corresponding Flow Rates , Second Production Test 101

APPENDIX D-4 Bottom Hole P r e s s u r e and T e m p e r a t u r e Data, Second P r e s s u r e Build-Up Per iod 109

APPENDIX E Summar ies from Relevant Radiological Monitoring P r o g r a m Reports 129

REFERENCES 134

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ILLUSTRATIONS

Page

Effluent and Disposal Points , P ro jec t Rio Blanco Product ion Testing 2

Layout of T r a i l e r s During Reentry Drilling and Product ion

Testing 4

Grand Junction Office and Warehouse Complex 5

Distribution of Telephone and Radio Circui ts in the EW Area 7

Diagram of Microwave Telephone and Radio Waves . . . 9

Schematic of Dril l Rig Layout for Reentry Drill ing 14

Schematic of Completed Reentry Well 16

Reentry Drilling Schedule as Accomplished 17

Layout of Faci l i t ies During Product ion Testing 20

Flow Configuration During Product ion Tes t s 21 Schematic of RB-E-01 Wellhead and Lubricator for Product ion Testing 23

Time History of Operating T e m p e r a t u r e s , F i r s t Product ion Tes t 26

Time History of Bottom Hole P r e s s u r e and T e m p e r a t u r e , F i r s t Product ion Test 27

Time History of Operating T e m p e r a t u r e , Second Product ion Tes t 28

Bottom Hole P r e s s u r e Buildup, R B - E - 0 1 , After F i r s t Product ion Test 30

Time History of Bottom Hole P r e s s u r e , T e m p e r a t u r e and Flow Rate, Second Product ion Tes t 31

Bottom Hole P r e s s u r e Buildup, R B - E - 0 1 , After Second Product ion Tes t 32

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ILLUSTRATIONS (CONT. )

Page

Time History of Water Production (kilopounds) per Unit Volume (MMSCF) of Total Gas Flow, with Corre la t ive Bottom Hole P r e s s u r e 34

Layout of the Ala rm and Control Panel 36

As-Bui l t Downhole Completion Detail, Fawn Creek Govern­ment #1 Well 40

Production Testing and P r e s s u r e Buildup Monitoring Schedule as Accomplished 42

Production Test Gas Sampling System 47

I. INTRODUCTION

Projec t Rio Blanco was designed as the f i rs t phase of a t h r ee -phase exper i ­mental p r o g r a m to demonst ra te the potential of commerc ia l development of a na tura l -gas field by nuclear st imulation techniques in the Piceance Basin in Rio Blanco County, Colorado. Because the gas is tightly held within the surrounding rock, this field has not been developed by conventional st imulation methods . At the t ime of this wri t ing, however, mass ive hydraulic fracturing exper iments a r e underway to investigate further this technology for develop­ment of gas fields. One of these exper iments ' - ' ' is being conducted at a site within one mile of the nuclear exper iment .

The f i rs t phase of the nuclear exper iment consis ted of the s imultaneous deto­nation of th ree nuclear explosives at different depths within the Fo r t Union and Mesaverde format ions . The detonations were designed to s t imulate a 1, 350-foot ver t i ca l section of the F o r t Union and Mesaverde format ions . After a five-month waiting per iod, a r een t ry well was completed into the g a s -filled chimney associa ted with the upper explosive, and the r e s e r v o i r test ing and evaluation began. The field act ivi t ies re la ted to this r een t ry dril l ing and chimney p r e s s u r e drawdown a r e the subject of this r epo r t . F igure 1 shows the pr incipal locations of project ac t iv i t ies .

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Figure 1. Effluent r e l ease and disposal points. Projec t Rio Blanco production test ing.

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2. GENERALIZED SITE ACTIVITIES

2. 1 SITE PREPARATION

P r i o r to the s t a r t of r een t ry dri l l ing ac t iv i t ies , the Fawn Creek access road and emplacement well (EW) were regraded and p repa red for the subsequent ac t iv i t ies .

An office t r a i l e r was provided for the use of the Atomic Energy Commiss ion (AEC), Lawrence L ive rmore Labora to r i e s (LLL), CER Geonuclear Corporat ion (CER), Continental Oil Company (Conoco), and other projec t pa r t i c ipan t s . Two mobile homes were provided, one for LLL and represen ta t ives of the dri l l ing tool companies and the other for CER/Conoco pe rsonne l . The dri l l ing contractor provided a self-contained camping t r a i l e r for i ts superintendent during the dril l ing phase . The radiological protect ion t r a i l e r s used by the Radiological Support Contractor (RSC) were supplied by the AEC as Govern­ment- furnished-equipment . CER's own effluent documentation sys tem, the TRY-KRY, was also instal led in a t r a i l e r . F igure 2 shows the p lacement of all t r a i l e r s on-s i te during the r een t ry dril l ing and production test ing of the R B - E - 0 1 well .

The flare stack was located in the clearing to the northwest and above the EW, and the previously c lea red cableway became the p r o c e s s piping route . The a r e a s which included the f lare stack, p roces s piping, s torage and condensate t anks , s epa ra to r , and wellhead equipment were fenced with th ree s t rand barbed wi re to prevent l ivestock f rom enter ing the a r e a and to control personnel a c c e s s .

The Grand Junction Control Point (GJCP) at the CER/Conoco office and w a r e ­house complex (Figure 3) in Grand Junction was maintained through the conclu­sion of the production testing of the RB-E-01 well .

2. 2 POWER INSTALLATION AND DISTRIBUTION

As equipment and t r a i l e r s were del ivered, the e lec t r ic distr ibution cables and connections were rees tab l i shed to the e lec t r i ca l distr ibution panels . Sufficient spa re safety switches were init ially instal led to provide the follow­ing anticipated e l ec t r i ca l demand.

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RB-E-01

Figure 2. Layout of t r a i l e r s during reen t ry drill ing and production testing.

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PIO

Q O

1

STAGE \

QICONF I D

h SPARE OFFICE

• 9J\

SECY

Rec

d]

D D

3ZI

n d" •

a

SCALE 5 10 15 20

FEET

LEGEND for FURNITURE i>—o DISPLAY BOARD

I I DESK

O CHAIR

• FILE CABINET

c=3 SIDE TABLE

F i g u r e 3. G r a n d Junc t ion office and w a r e h o u s e connplex.

Dr i l l i ng (KW) T e s t i n g (KW)

Rad io log i ca l Safety C o n t r a c t o r (RSC) 40 40 AEC 10 10 Tool Hands 5 Tool P u s h e r 5 5 CER 10 10 A r e a Light ing 10 10 TRY-KRY 30 30 I n s t r u m e n t a t i o n 1 5 W a t e r In ject ion P u m p - - 50 C o m m u n i c a t i o n s E q u i p m e n t 5 5 Hea t T a p e _ - ^ 40

Tota l 116 185

Use Load F a c t o r 0 . 8 0 . 8 P o w e r R e q u i r e d 93 148

An add i t iona l 50-kVA, 3 - p h a s e t r a n s f o r m e r w a s p r o v i d e d to supply p o w e r to the 5 0 - h o r s e p o w e r w a t e r in jec t ion p u m p . T h i s i n c r e a s e d the e l e c t r i c p o w e r p r o v i d e d to the EW to 150 kw (nomina l ) . H o w e v e r , du r ing the f i r s t p r o d u c t i o n t e s t , it w a s d e t e r m i n e d t h a t the t e m p e r a t u r e of the flowing g a s w a s e x c e s s i v e ; and the d e c i s i o n w a s m a d e to add f in- fan c o o l e r s u p s t r e a m of the s e p a r a t o r be fo re f u r t h e r t e s t i n g . The 13 kw r e q u i r e d m a d e i t n e c e s s a r y to change f r o m a 50-kw t r a n s f o r m e r to a 75 -kw t r a n s f o r m e r .

E l e c t r i c s e r v i c e f r o m a c o m m e r c i a l s o u r c e w a s a v a i l a b l e a t the G J C P and w a s d i s t r i b u t e d a s shown in the p r o j e c t def in i t ion p l an . ' ^ '

2. 3 COMMUNICATIONS

The p r i n c i p a l t e l e p h o n e and r a d i o c o m m u n i c a t i o n f a c i l i t i e s for the p r o j e c t w e r e loca t ed in G r a n d Junc t ion w h e r e the C E R m i c r o w a v e t e l e p h o n e s y s t e m i n t e r c o n n e c t s with the Mounta in Bel l t e l ephone s y s t e m .

M i c r o w a v e c o m m u n i c a t i o n e q u i p m e n t w a s u t i l i z ed for both the t e l e p h o n e and the V H F duplex r a d i o ne t . M i c r o w a v e t e l e p h o n e r e l a y s t a t i o n s w e r e l o c a t e d at L a n d s End and M o n u m e n t P e a k wi th t e r m i n a l e q u i p m e n t in the C E R c o m m u n i ­ca t i ons shed a p p r o x i m a t e l y 1/2 m i l e w e s t of the EW. A V H F b a s e s t a t ion w a s a l s o l o c a t e d in the c o m m u n i c a t i o n s s h e d . E x i s t i n g s igna l cab le l a id du r ing the de tona t ion p h a s e w a s u t i l i zed to p r o v i d e t e l ephone and V H F r a d i o s e r v i c e to the EW a r e a , as shown in F i g u r e 4. A X e r o x t e l e c o p i e r w a s a v a i l a b l e at both the G J C P and the EW for t r a n s m i s s i o n of p r i n t e d o r w r i t t e n m a t e r i a l .

The CER t e l ephone s y s t e m a t the EW s i t e o p e r a t e s o v e r a j n i c r o w a v e l ink a s a d i r e c t d ia l ing e x t e n s i o n of a G r a n d Junc t ion t e l ephone e x c h a n g e of t h e Mounta in Be l l t e l ephone s y s t e m . F o u r t e l e p h o n e l i n e s o r i g i n a t e in a G r a n d J u n c t i o n

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TELEPHONE ASSIGNMENT

2 4 5 - 2 3 5 0 \ 245-2351 / A E C / L L L

245- 2352

245-2353

CER/CONOCO

RSC

NOTE- ONLY LAST TWO DIGITS OF TELEPHONE NUMBER SHOWN.

l \ RADIO

O TELEPHONE

TO MONUMENT PEAK

CONTROL STATION AND MICROWAVE EQUIPMENT 1/2 MILE WEST OF E.W.

SIGNAL CABLE

LLL

AEC/LLL/ CER/ CONOCO

DRILLER

CER

53 RSC

^

RSC

A 3^ 53 RSC

F i g u r e 4 . D i s t r i b u t i o n of t e l ephone and radio c i r c u i t s in the EW a r e a .

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telephone exchange and te rmina te at the EW. Figure 5 d iagrams the m i c r o ­wave telephone and radio sys tem.

Individual telephone numbers were assigned to each of the four telephone lines from the Grand Junction telephone office. A telephone d i rec tory of telephone numbers and respect ive locations and organizations was published.

A radio re lay station located at Monument Peak provided adequate radio com­munication between fixed stations at the EW and GJCP and among fixed stations and mobiles in the Piceance Creek Basin. Communication with mobiles out­side the basin was l imited by l ine-of-s ight r e s t r i c t i ons .

A l imited number of mobile radios were furnished by CER for use by those project part icipants direct ly involved with field act ivi t ies during the exper iment and were used p r imar i ly for coordination of logist ic r equ i r emen t s .

In the event of commerc ia l power fai lure, the microwave telephone sys tem and the VHF radio repea te r and control station continue to operate on bat tery power for a minimum of 8 hours .

Frequencies for the CER VHF radio net a r e :

Repeater / f ixed, mobile T ransmi t /Rece ive 153.350 MHz

Repeater / f ixed, mobile Rece ive /Transmi t 158. 370 MHz

Transmi t frequencies for the microwave sys tem are as follow^s:

Grand Junction to Lands End 956. 700 MHz Lands End to Monument Peak 953.500 MHz Monument Peak to EW 956. 900 MHz EW to Monument Peak 953. 300 MHz Monument Peak to Lands End 957. 100 MHz Lands End to Grand Junction 953. 100 MHz

2. 4 INDUSTRIAL SAFETY

2. 4. 1 General

CER operat ions and act ivi t ies were conducted in accordance with the s tandards of the Occupational Safety and Health Act of 1970. All part icipat ing organiza­tions were responsible for the health and safety of their ow n personnel and for conducting all act ivi t ies in accordance with procedures that a s s u r e :

1. A safe and healthful environment for their employees .

2. Control and minimizat ion of hazards to the public and to personnel of other par t ic ipants .

CONTROL STATION ANTENNA

1/2 MILE WEST OF EW

TELEPHONE AND RADIO EQUIPMENT

3 TELEPHONE LINES

TO 6J EXCHANGE

GJ CP

> 4 ( EW

,ELEPHONE_CHANNELS

CHANNE>- LANDS END

RADIO RELAY

MONUMENT PEAK

Figure 5. Diagram of microwave telephone and radio system.

3. Minimization of the accidental damage or loss of company and privately owned equipment, m a t e r i a l s , and proper ty .

2. 4. 2 General Safety

Reentry of the st imulated gas zone involve general construction work, dri l l ing, and installation of h igh -p res su re piping and p r e s s u r e v e s s e l s . The following safety s tandards were establ ished as c r i t e r i a for the performance of this work

1. National

2. General Safety Requirements - Corps of Engineers

3. ASMS - Boiler and P r e s s u r e Vessel Code

4. API - Recommended Standards and P rocedu re s

5. AAODC - Tool Pushe r s Manual

2 . 4 . 3 F i r s t Aid

During the reent ry drill ing and f i rs t production test ing, CER provided an experienced f i rs t aid man and a radio equipped ambulance on each work shift. The f i rs t aid men were off-duty personnel of the Grand Junction e m e r ­gency rescue division of the f ire depar tment . The f i rs t aid man was stationed in the office t r a i l e r , provided by CER, which was equipped with suitable f i r s t aid supplies as recommended by a local physician. CER also provided each part icipating agency contacts with local medica l facili t ies and physicians in the Grand Junction, Rifle, and Meeker a r ea s for use in the event of accident or i l lness . The availability of an ambulance and a f i rs t aid man on-s i te was suspended after the f i rs t production tes t and not resumed during the second production tes t because of reduced manning level.

2. 5 GENERAL SUPPORT REQUIREMENTS

Drinking water was furnished in cool cans at the EW. Jani tor ia l se rv ice was provided at the EW on a minimal bas i s . Occasional s e c r e t a r i a l and c le r i ca l se rv ices were also available. Office furniture was supplied at the GJCP as shown in Figure 3, Chemical toilets were provided at the EW. Waste and garbage cans were provided around the working a r ea s at both the GJCP and EW. Disposal of refuse was handled by an approved local agency. Air con­ditioning was not generally furnished to t r a i l e r s at the EW. T r a i l e r s fur­nished by CER were heated by propane fuel. The RSC and TRY-KRY t r a i l e r s were air conditioned as required to a s s u r e stability of e lectronic equipment. Furnaces or hea te rs were of an approved vented type. An emergency fuel

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and lubricating oil supply for vehicles and equipment was furnished at the EW.

Dry chemical type fire ext inguishers were located around the EW as were b a r r e l s filled with a mixture of water and antifreeze in the event of f i re . No f i res were experienced on the project .

CER/Conoco provided miscel laneous labor to support the project as well as t ranspor t ing , shipping, receiving, and hauling var ious supplies and m a t e r i a l s for the par t ic ipants . Approximately 1,200 square feet of enclosed warehous­ing was utilized at the GJCP office. Limited enclosed s torage was available at the EW a rea for spa re pa r t s and equipment. Sufficient open s torage space was available at the GJCP and EW a r e a s . Dust control , snow removal , and normal "good housekeeping" maintenance of the access road and EW a r e a w^ere performed on an as requi red bas i s .

2. 6 ROLLUP

The rollup act ivi t ies contemplated in the project definition plan (2) have not been accomplished as of the date of this repor t . Additional dri l l ing and tes t ­ing act ivi t ies repor ted e lsewhere or yet to be undertaken have resul ted in indefinite postponement of this activity.

2. 7 OTHER SUPPORT

The GJCP was operated during normal bus iness hours to support the project . Normal functions of adminis t ra t ive , s e c r e t a r i a l and c le r i ca l work were pe r ­formed. Warehousing, shipping, and receiving faci l i t ies were maintained. The GJCP served a lso , during this period, as a base for handling c la ims result ing from the detonation, as descr ibed in Reference 1, and for l imited public information ac t iv i t ies .

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3. REENTRY DRILLING PROGRAM - RB-E-01

Upon conclusion of the principal act ivi t ies associa ted with the detonation phase of the Rio Blanco exper iment , CER/Conoco began prepara t ion for reen t ry drill ing and subsequent production testing of R B - E - 0 1 . The init ial step was to re loca te the RSC t r a i l e r s to the emplacement well pad and to init iate routine radiological survei l lance of the a r ea during the 3-month delay that was sched­uled to allow the decay of shor t - l ived radioactivity in the chimney, in p a r t i c ­u lar , 1311

Pipe and a s so r t ed m a t e r i a l s were del ivered to the si te and welding and a s s e m ­bly of the various pipe l ines began. The f lare stack and dr ip pans were shop fabricated and del ivered to the s i te . As soon as the foundation and guy anchors were instal led for the f lare stack, it was e rec ted . Tankage (water and con­densate s torage) was set in place and interconnecting piping was instal led for the tankage, separa to r , and water disposal pump. Instrumentat ion was instal led and assoc ia ted signal cable routed to connect to the a l a r m and control panel.

While this p repa ra to ry work was in p r o g r e s s , the gas sampling p rogram descr ibed in the project definition plan(2) was at tempted with indifferent r e s u l t s . Attempts to remedy downhole blockage of the gas sampling tube were not successful . The effort was finally abandoned and the open downhole por ­tion of the tube was plugged with epoxy as planned as a precaut ionary m e a s u r e .

Difficulty was experienced in obtaining a dr i l l r ig that nnet the safety and operat ing c r i t e r i a . Even after a suitable dr i l l r ig was located, a delay oc­c u r r e d while the dr i l l rig completed another ass ignment before moving to the reen t ry well location. Once the dr i l l rig availabili ty was establ ished, the drill ing well control (DWC) unti, blowout p reven te r (BOP) equipment, explo­sive gas monitoring sys tem, radiat ion detection equipment, and var ious other supplies were coordinated into the reen t ry schedule. (See Figure 6 for layout of reen t ry equipment. ) As the assembly and erec t ion of the dr i l l rig p r o g r e s ­sed, dr ip pans were instal led at the wellhead ce l la r , DWC, shaker table, and dr i l l pipe stands on the rig floor and decontamination pad a r e a s . The natura l gas pipe line from the Fawn Creek Government No. 1 Well was completed and the natura l gas used as a purge sys tem in the flow lines to prevent an explosive mix tu re from accumulating.

P r i o r to the s t a r t of dri l l ing, tes ts of the BOP, DWC, flow l ines , and safety moni tor ing sys tems were sat isfactor i ly conducted. With the testing completed, r een t ry dril l ing betan on September 23, 1973.

3. 1 REENTRY DRILLING

Reentry was through the 7-in. emplacement casing using a downhole motor (Dyna Drill) and a 6 -1 /8 - in . mi l l to dr i l l out the cement plug inside the 7-in.

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oo oo

400-BARREL WATER STORAGE TANKS

DRUMS FOR SOLIDS FROM SHALE SHAKER

SHALE OlSHAt^

8 LINE ..^TO FLARC STACK

ia REMOTE CONTROLS FOR BLOW OUT PREVENTOR

J, \

Ml 1

m 1

u 1 1

iiiii nil lllllllllllll r w

WELLHEAD

RB-E-01

DRILL RIG

DOG 1 HOUSE

K 1 Ui 1 »- 1 < 1

u 1 K 1

PIPE RACK

MUD PUMP

MUD PUMP

MUD STORAGE

RIG FUEL

OO

"-«o

Figure 6. Schematic of dr i l l r ig layout for reen t ry drilling (not to scale) .

- 1 4

casing from approximately 2, 797 ft KB (Kelly Bushing) to approximately 5, 194 ft KB. Below the cement plug, it was found that the gfeUed water used in s temming had failed to do the expected, i. e. , lose i ts high viscosi ty and flow into the chimney. Hence, p r o g r e s s into the hole was made by c i rcu la t ­ing out the gel to 5, 351 ft KB. Below 5, 351 ft KB, it was neces sa ry to mi l l through c rushed casing over the following in t e rva l s : 2 ft at 5, 351 ft, 2 ft at 5,452 ft, 1 ft at 5, 484 ft, 4 ft at 5,494 ft and 43 ft at 5, 506 ft, all depths KB. Only 5 ft of hole was made below 5, 549 ft KB with re tu rns being formation plus meta l . Apparently the hole was mil led through the 10-3 /4 - in . casing at about 5, 551 ft KB.

Due to continuing difficulties, it was decided to abandon the well below 5, 350 ft KB and proceed with a l te rna te reen t ry plan number one, descr ibed in Reference 2 as follows. A whipstock was set at 5, 322 ft KB. A mi l l was used to dr i l l out of the 7-in. and 10-3 /4 - in . cas ings . Drilling continued outside the casings to a total depth of 5, 706 ft KB with no dri l l ing mud re tu rns at all below 5, 633 ft KB. Gas p r e s s u r e was encountered and recorded at the surface at 5,671 ft KB. The well was then completed (Figure 7) and, after a 1-3/4-hour flow tes t through the DWC unit to ensure adequate communication with the chimney, the dr i l l r ig was re leased . The well was then ready for connection to the production and testing equipment. The daily dril l ing r epor t s for r een t ry a r e presented in Appendix A.

3. 2 SCHEDULE AS ACHIEVED

The schedule of the major elements of the Reentry Drilling P r o g r a m , as achieved is shown in Figure 8.

- 1 5 -

Figure 7. Schematic of completed reen t ry well.

-16-

1 EXPLOSIVES DETONATED

IRE-OCCUPY R B - E - O I PAD

PROGRAMMED 3 MONTH DELAY

INSTALL TANKAGE. PIPING SEPARATOR. FLARE STACK. ETC.

1 PREPARE SITE FOR DRILL RIG

1 ERECT DRILL RIG

1 TEST DRILL RIG, BOP'S, DWC

1 INITIAL RE-ENTRY DRILLING

PLUG BACK TO 5322 FT. SIDE­TRACK FOR ALTERNATE RE-ENTRY

1 WELL COMPLETION

1 TEST FLOW THROUGH DWC

RIG DOWN, DECONTAMINATE a 1 MOVE OFF EQUIPMENT

V 1

1 1 :

\

1 f falMi 1

MAY JUN JUL AUG SEP OCT NOV

1973

Figure 8. Reentry drill ing schedule as accomplished.

- 1 8 -

I t

4. PRODUCTION TESTING

4.1 GENERAL

The objectives of the production testing p rogram w e r e :

1. A production period to m e a s u r e the p r e s s u r e drawdown occurr ing within the chimney in relat ionship to the quantity of gas produced in o rde r to calculate chimney volume and effective f rac ture volume.

2. A long- te rm p r e s s u r e buildup to de te rmine the extent of fracturing and virgin r e s e r v o i r c h a r a c t e r i s t i c s .

3. Quantitative analysis of the produced gas to deternnine i ts physical components including radioactive species and to de te rmine the degree of comnnunication between chimneys.

4. Detailed analysis of resu l t s compared to predic t ions .

4 .2 SITE LAYOUT

Figure 9 indicates the location of the components for the two production testing phases . Dae to the problems encountered from the high t empera tu re of the flowing gas, the f i rs t production tes t was shortened in o rde r to make cer ta in modificat ions, including installation of three fin-fan coolers ahead of the sep­a r a to r to drop the t empera tu re of the flowing gas to an acceptable level . The flow configuration of the produced gas and the separa to r products is shown in Figure 10.

4 .3 EQUIPMENT

P r i o r to and during the reent ry dri l l ing, instal lat ion of the production and testing equipment p rog res sed . Water and condensate s torage tanks, water disposal pump, separa to r , c r i t i ca l flow prover , gas sampling spool, and f lare stack were instal led. The piping connecting the var ious connponents was fabricated and instal led. The instrunnent control piping was completed to provide control gas to var ious ins t ruments as well as natural gas to the pilot lights on the flare stack and hea te r s in the water s torage tanks and sepa ra to r . The control panel with i ts a l a r m and monitoring functions was instal led and signal cable te rmina ted to its appropr ia te device and tes ted . Tubing was connected to the gas sampling spool and run to the gas conditioning skid which supplied dry gas to the RSC and TRY-KRY t r a i l e r s for sampling. With rig, BOP, and DWC removed, it was neces sa ry to re route and instal l additional flow piping for the production testing of the well. As the piping was assembled into the var ious sys tems and neared completion, each line was p r e s s u r e tested to ensure against leaks .

-19 -

WATER STORAGE TANKS

WATER L j PUMP

ALARM a CONTROL PANEL

-FIN FAN COOLERS

H2S MONITOR

GAS SAMPLING TUBING TO GAS CONDITIONING SKID

WIRE LINE UNIT

R B - E - O I

NOTE •• FIN FAN COOLERS WERE ADDED AFTER THE FIRST PRODUCTION TEST.

Figure 9. Layout of facili t ies during production test ing.

- 2 0 -

<§ NOTE- FIN-FAN COOLERS WERE ADDED

AFTER THE FIRST PRODUCTION TEST

^ ^

WIRE LINE UNIT

mm^ GAS SAMPLING PORT ^

RB-E-OI WELLHEAD

- < ^ FAN |^2>-

•<EH F'AN f ^

^ FIN FAN ^

8 SCHEDULE 20

r ' i

WATER STORAGE TANKS

FLARE STACK DISPOSAL PUMP

AA

< o '? X

o 0>

s

WATER DISPOSAL PUMP

TO DISPOSAL WELL

Figure 10. Flow configuration during production tes t s .

The wellhead configuration was modified for production testing and handling of the downhole p r e s s u r e and t empera tu re ins t ruments as indicated in F igure 11. With winter approaching, it was necessa ry to apply heat tape, insulation, and a weatherproofing m a t e r i a l to all flow lines (such as piping, valves , pumps, and f i l ters) which would contain water p r io r to the s t a r t of production test ing. These flow l ines we re :

1. Separator water outlet to the water s torage tanks.

2. Interconnecting piping between the four water s torage tanks.

3. Water s torage tank outlets to and including water d isposal pump, f i l t e r s , and water disposal line to Fawn Creek Government Number 1 Well, about 1, 300 ft away.

4. Separator condensate outlet to the condensate s torage tanks including a bypass line to the water s torage tanks. This line was protected since during the f i rs t production testing the high tennperature of the gas s t r eam was causing water vapor to appear in the condensate portion of the sepa ra to r . Upon discharging from the separa to r to the condensate s torage tanks, the water was subject to freezing.

5. Wet gas sampling lines at the wellhead.

6. Water line from water supply well RB-D-01 to the fresh (uncontami-nated) water s torage tank.

7. RSC gas sample line from sam|)ling por ts downstream of separa to r to the gas conditioning skid adjacent to the RSC labora tory t r a i l e r s .

Before the s t a r t of production test ing, dr ip pans had been instal led in the wellhead ce l la r , under the separa to r and the water disposal pump, and in a decontamination a rea .

At the conclusion of the production test ing, dr ip pans were cleaned and con­taminated i tems were put in b a r r e l s and s tored for future disposal .

Sampling por ts were provided to allow collection of fluid samples at the fol­lowing locations

1. Fawn Creek Government Number 1 Well natural gas supply could be sampled near the EW wellhead fixture, while associa ted water could be sampled at the Fawn Creek separa to r .

2. The emplacement well nuclear s t imulated gas could be sampled at a EW wellhead fixture, downstream of the separa to r , and downstream of the c r i t i ca l flow prover .

- 2 2 -

WIRELINE SHEAVE

BOWEN WIRELINE CONTROL HEAD

2 V TUBING LUBRICATOR

'/e" BLEED VALVE

WIRELINE TO HOIST

WIRELINE BOP

V2 VALVE FOR BLEED OFF a PRESSURE RECORDER

* . THERMOWELL ESDV-I

4 FLOWLINE

mmmmmmm,

'f/ CELLAR

WELLHEAD

TO SEPARATOR

I J-

* EMERGENCY SHUT-DOWN VALVE NOTE: IN PLAN VIEW WIRELINE

ASSEMBLY IS AT 900 TO FLOWLINE.

Figure 11. Schematic of RB-E-01 wellhead and lubr ica tor for production tes t ing.

23.

3. Condensate sampling por ts were located at the condensate s torage vess le s and the separa to r .

4. Water sampling por ts were provided on each water s torage tank, at the separa to r , and on the eight- in. flow line to f lare stack.

4. 4 TEST SCHEDULE FLOW RATE AND DURATION

The original tes t schedule called for one flow period lasting 10 days at a con­stant ra te of approximately 30 MMSCFD followed by a long-ternn buildup. However, the conditions encountered dictated otherwise and the tes t schedule was modified as the f i rs t flow per iod was in p r o g r e s s .

The initial flow ra te , beginning at 1245 hours on November 14, 1973, was approximately 5 MMSCFD. At 1440 hours , the flow ra te was increased to approximately 15 MMSCFD. At 1500 hours , the emergency shutdown valve automatically shut in the well because of a false a l a r m . At 1550 hours , the well was again flowing at approximately 15 MMSCFD. At 1750 hours , the flow ra te was increased to 24 MMSCFD; however, lift off and flame out of the gas s t r eam was occurr ing at the f lare stack. At 1800 hours , the flow rate was reduced to approximately 15 MMSCFD. F r o m 1900 to 2200 hours , a steady flow rate of approxinnately 15.4 MMSCFD was maintained. At 2200 hours , the well was manually shut in because of operating difficulties.

It was necessa ry to stop the production tes t from 2200 hours , November 14, to 1135 hours , November 16, 1973, to c o r r e c t some of the operating diffi­cult ies result ing from high t e m p e r a t u r e s . The cor rec t ive actions were as follows:

1. The separa tor was par t ia l ly plugged and was cleaned.

2. A regulator on the separa to r was leaking water (steam) and this was cor rec ted .

3. A valve on the separa to r was leaking through its plug seal and would not completely shut off the flow. This condition was par t ia l ly co r ­rec ted .

4. The emergency shutdown valve at the well was inoperable since it was in a bind because of the rmal dis tort ion of the flowline. This condition was cor rec ted .

The production testing resumed on November 16, 1973, at 1135 hours , and was concluded on November 20, 1973 at 1007 hours because of the high operating t empera tu re and the significant dec rease in bottom hole p r e s s u r e . During the init ial production and testing of the gas , Novennber 14 through 20,

- 2 4 -

1973 (with the exception of down t ime from 2200 hours , November 14 to 1152 hours , November 16, 1973), the operating t empera tu re of the separa to r steadily and gradually inc reased to a maximum of 345 °F jus t p r io r to shut in on November 20, 1973, as shown in Figure 12. The t empera tu re of the flowing gas at the wellhead was approximately 25 ° F higher . The t ime his tory of the bottom hole p r e s s u r e and t empera tu re during the same t ime per iod is shown in Figure 13. The p r e s s u r e and t empera tu re data a r e presented in Appendix D-1 ,

During the production test ing, hydrogen sulfide gas (H2S) was detected in the gas s t r e a m . Its odor was evident at the EW pad and i ts source was found to be the elevated exhaust of the sannple gas at the RSC laboratory t r a i l e r s . Increas ing the elevation of the exhaust el iminated the odor. However, in the in t e re s t of personnel safety, a hydrogen sulfide detection ins t rument with a l a rm was procured and instal led in the vicinity of the personnel t r a i l e r s . It was also necessa ry to replace the carbon steel wi re on the wire line unit used to suspend the p r e s s u r e and t empera tu re ins t ruments within the well with s ta inless steel w i r e . H2S causes embr i t t lement and probable failure of carbon steel wire which might have resul ted in the loss of the ins t ruments do^vnhole.

At the conclusion of the f i rs t production test , s teps were taken to decontami­nate the var ious i tems of equipment such as the separa to r , wellhead, ce l la r and other appurtenances in the wellhead a r ea , dr ip pans , condensate s torage , and the water s torage a r e a s .

One valve on the separa to r was found to be badly eroded and was replaced. Other valves checked were found to be sat isfactory as well as all other p r o ­duction test equipment.

The data obtained during the f i rs t production tes t , including the analyses of gas samples taken periodical ly during the flow tes t , provided no evidence of flow communication between the top chimney and the lower ones. The ra te of dec rease was consis tent with communication with only the top chimney. Analysis of the produced gas failed to revea l any significant quantity of t r a c e r gas which had been added to the middle chimney.

During the period between the two production tes ts (November 21, 1973 to January 28, 1974) three fin-fan coolers were added in para l le l into the gas flow s t r e a m between the wellhead and the separa to r to solve the high-t empera tu re operating condition problem. The addition of the three fin-fan coolers was found to provide adequate cooling of the produced gas . With the fin-fan coolers in operation, the separa to r operating t empera tu re was gen­eral ly in the range of 105 ° F to 150 ° F , and never exceeded 180 ° F , well within the normal t empera tu re operating range of the separa to r , even though the flowing gas t empera tu re m e a s u r e d at the wellhead increased rapidly and remained close to 400 ° F (204 °C). The t ime his tory of the t empera tu re s is shown in Figure 14.

- 2 5 -

14 15 16 17 18 19 2 0

NOVEMBER 1973

Figure 12. Time h is tory of operating t e m p e r a t u r e s , f i r s t production tes t .

- V -

~ I 9 MM

SHUT IN MOOIFICAl HIGH TEK PROBLEM

-

/

-

- 1 -

V

\ \

LEFT SCALE-

CF/D

1

~ 10 Mm

FOR ION 1 OPERATURE 3

1

I

1 /

1 /

!

/

j^^ ^ s

CF/D

^ RIGHT S(

NOTE 1 OF 5I6(

1

\

- - 8 MM

:ALE

SENSORS AT ) FT GL

-

SHUT IN FOR PRESSURE BUILDUP AND FURTHER MODIFICATION _

X CF/D

DEPTH

I

-

-

t ..

1

-

4 4 0

4 2 0

4 0 0

380

360

340

320

X o

m

c x m

14 19 16 17 18

DATE -NOVEMBER 1975

20

Figure 13. Time his tory of bottom-hole p r e s s u r e and t empera tu re , f i rs t production tes t .

-27 -

400

I CO 00 I

350

900

2S0

200

Figure 14, Time his tory of operating t empe ra tu r e s , second production tes t .

A l s o du r ing the s econd flow t e s t , c o m m e r c i a l e l e c t r i c p o w e r f a i l ed t>vice (blown fuses due to o v e r l o a d ) on F e b r u a r y 1, 1975, for a few h o u r s and p r o ­duc t ion t e s t i n g was ha l t ed b e c a u s e the f in-fan c o o l e r s and the w a t e r in j ec t ion p u m p w e r e i n o p e r a b l e . After the s e c o n d fuse f a i l u r e , a l a r g e r t r a n s f o r m e r w a s i n s t a l l e d to power the f in-fan c o o l e r s and the w a t e r in j ec t ion p u m p .

H o w e v e r , g e n e r a l c o n c e r n w a s e x p r e s s e d about the p o s s i b i l i t y of a t o t a l c o m m e r c i a l power f a i l u r e which would r e s u l t in a l l the w a t e r flow l i n e s being wi thout e l e c t r i c a l power for the h e a t t a p e s and thus be ing sub j ec t to f r e e z i n g and b u r s t i n g . A 37. 5-kVA g e n e r a t o r w a s c o n n e c t e d in a s t andby con f igu ra t i on th rough a m a n u a l t r a n s f e r swi t ch to the e l e c t r i c d i s t r i b u t i o n pane l so tha t , in the event of a c o m m e r c i a l power f a i l u r e , the hea t t a p e s on the w a t e r l i n e s on the EW pad would con t inue to p r o t e c t the l i n e s . The a l a r m and c o n t r o l pane l , m i n i m u m e x t e r i o r l igh t ing , and p e r s o n n e l t r a i l e r s w e r e a l s o p l a c e d on th i s c i r c u i t . Sufficient power would not be a v a i l a b l e f r o m th i s s tandby g e n e r a t o r to o p e r a t e the w a t e r in j ec t ion p u m p , f in - fan c o o l e r s , or hea t ing t a p e s on the w a t e r d i s p o s a l l ine to the F a w n C r e e k G o v e r n m e n t N u m ­b e r 1 Wel l . T h e r e f o r e , t h e s e o p e r a t i o n s would n e c e s s a r i l y c e a s e un t i l c o m ­m e r c i a l e l e c t r i c power had been r e s t o r e d .

Bo t tom hole p r e s s u r e w a s m o n i t o r e d d u r i n g the p r e s s u r e bui ld up following each of the two p r o d u c t i o n t e s t s of R B - E - 0 1 . The da ta for the f i r s t bui ld up, f r o m N o v e m b e r 20, 1973, to J a n u a r y 28 , 1974, a r e l i s t e d in Append ix D-2 and a r e p lo t ted in F i g u r e 15. The p r e s s u r e and t e m p e r a t u r e da t a for the s e c o n d d r awdown and the p r e s s u r e da ta for the fol lowing p r e s s u r e bui ld up a r e shown in F i g u r e s 16 and 17, r e s p e c t i v e l y . The p r e s s u r e and t e m p e r a t u r e da t a for the s e c o n d d r a w d o w n a r e l i s t e d in Appendix D - 3 , wh i l e t h o s e for the s e c o n d bui ld up a r e g iven in Appendix D - 4 .

M o n i t o r i n g of the bo t tom hole p r e s s u r e bui ld up a f t e r the s e c o n d d r awdown w a s t e r m i n a t e d on June 24, 1975, 494 days a f t e r shu t in .

With r e s p e c t to w a t e r p roduc t ion at the s e p a r a t o r du r ing d r awdown of the R B -E - 0 1 Wel l f r o m the n u c l e a r c h i m n e y , the p r e d e t o n a t i o n p r e d i c t i o n s c o n t a i n e d in V o l u m e III of R e f e r e n c e 2 p o s t u l a t e d tha t about 20 b b l s , 7 , 0 0 0 l b s , of f r ee w a t e r would be p r o d u c e d wi th e a c h m i l l i o n S C F of to ta l g a s f lowed. T h i s p r e ­d ic t ion w a s b a s e d on pub l i shed d a t a ' ^ ' of w a t e r con ten t of n a t u r a l g a s and on the a s s u m p t i o n s that the i n i t i a l downhole p r e s s u r e and t e m p e r a t u r e w e r e 2500 psi and 450 ° F , r e s p e c t i v e l y , and tha t the s e p a r a t o r w a s o p e r a t e d a t 1000 ps i and 300 ° F . The p r e d i c t i o n a l s o a s s u m e d a p r e s s u r e d r a w d o w n of about 30 p e r c e n t . It w a s found du r ing the f i r s t p r o d u c t i o n t e s t tha t the downhole p r e s ­s u r e w a s about 80 p e r c e n t of the a s s u m e d va lue but tha t the bo t t om hole t e m ­p e r a t u r e w a s c l o s e to the a s s u m e d 450 ° F . The l o w e r i n i t i a l bo t tom hole p r e s s u r e r e s u l t e d in the p r o d u c t i o n of w a t e r a t an i n i t i a l r a t e of about 10, 700 I b s / M M S C F to ta l g a s , i n c r e a s i n g to 1 6 , 6 0 0 I b s / M M S C F to t a l gas at the end of the f i r s t d r a w d o w n . Dur ing the s e c o n d d r a w d o w n , which w^as con t inued unti l the to ta l g a s l eav ing the c h i m n e y w a s ove r 80 p e r c e n t s t e a m , the w a t e r

- 2 9 -

NOV DEC. DEC. DEC. DEC. JAN. JAN. JAN. JAN. 2 8 6 14 22 30 7 13 23 31

1800

1700

1600

UJ a: CO

(n UJ

a 1500

1400

EACH CONTINUOUS CURVE IS A SEPARATE

QUADRATIC LEAST SQUARES FIT TO THE

DATA

1300

END OF FIRST

DRAWDOWN

I2O0 2 3 24

DATE - NOVEMBER 1973

Figure 15. Bottom hole p r e s s u r e buildup, R B - E - 0 1 , after f i r s t production test .

1800

1600

1400

S2 V) 0.

UJ K 1200

UJ IT a.

1000

8 0 0

600

4 0 0

V)

<

UJ

o z 2

NOTE = SENSORS AT DEPTH OF 5160 FT GL

460

4 4 0

4 3 0 ^

m X >

420

410

4 0 0

28 29 30 31 JANUART 1974

6 7 8 9 10 FEBRUARY 1974

12 13 14

Figure 16. Time his tory of bottom hole p r e s s u r e , t empe ra tu r e and flow r a t e , second production test .

- 3 1 -

1974 1975-F M A M J J A S O N D J F M A M J

EACH CONTINUOUS CURVE IS A SEPARATE QUADRATIC LEAST SQUARES FIT TO THE DATA

5PERRY - SUN

AMERADA

-p-o-c

16 IS 19 FEBRUARY 1974

20 21 22 23

Figure 17, Bottom-hole p r e s s u r e buildup, R B - E - 0 1 , after second production tes t .

- 3 2 -

p r o d u c t i o n r a t e c l i m b e d s t e a d i l y to 38, 200 I b s / M M S C F t o t a l g a s . The t i m e h i s t o r y of the r a t i o of w a t e r p r o d u c e d to to t a l g a s volunne i s shown in F i g u r e 18, wi th c o r r e l a t i v e bo t tom hole p r e s s u r e s .

4 . 5 AUTOMATION AND A L A R M SYSTEM

4. 5. 1 I n s t r u m e n t a t i o n

In m a n y l o c a t i o n s i t w a s p o s s i b l e to u s e v i s u a l m o n i t o r i n g , of a s igh t gauge such a s a t h e r m o m e t e r o r s igh t g l a s s , to d e t e r m i n e w h e t h e r o p e r a t i n g c o n ­d i t ions w e r e s a t i s f a c t o r y . H o w e v e r , e x p e r i e n c e h a s taught tha t t h e r m o m e t e r s c a n ma l func t ion and the s igh t g l a s s b e c o m e opaque , m i s l e a d i n g o p e r a t i n g p e r s o n n e l into be l i ev ing that o p e r a t i n g cond i t i ons w e r e s a t i s f a c t o r y w h e r e in r e a l i t y d a n g e r e x i s t e d . F o r th i s r e a s o n , i n s t r u m e n t a t i o n for the p r o d u c t i o n t e s t i n g w a s d u p l i c a t e d in m a n y i n s t a n c e s . As an e x a m p l e , t e m p e r a t u r e of the g a s flowing f r o m the w e l l h e a d w a s o b s e r v e d on a d i r e c t r e a d i n g m e c h a n i c a l t h e r m o m e t e r ; h o w e v e r , a few feet away w a s a h i g h - t e m p e r a t u r e a u t o m a t i c shu tdown swi t ch , t h e r m o s t a t c o n t r o l l e d ( e l e c t r o n i c ) , c o n n e c t e d to the a l a r m p a n e l and e m e r g e n c y shutdown v a l v e a t the w e l l h e a d . T h u s , the nnechan i ca l t h e r m o m e t e r cou ld fai l but the o p e r a t i n g p e r s o n n e l would be a w a r e of the a u t o m a t i c shu tdown f r o m a h i g h - t e m p e r a t u r e cond i t ion . T h e s e s y s t e m s w e r e t e s t e d p r i o r to p r o d u c t i o n of the wel l to e n s u r e t h e i r o p e r a t i o n .

4 . 5. 2 High- and L o w - L e v e l A l a r m s

The h igh - and l o w - l e v e l a l a r m i n s t r u m e n t a t i o n c o n s i s t s of a f loat sw i t ch wh ich a c t i v a t e s a s i g n a l l a m p at the c o n t r o l p a n e l . The h igh - and l o w - l e v e l s w i t c h e s w e r e u s e d in e a c h of the four w a t e r s t o r a g e t a n k s . The h i g h - l e v e l a l a r m would i n d i c a t e the tank w a s full and no f u r t h e r fil l ing should o c c u r o r the tank would over f low via piping to the next tank, e t c . , unt i l a l l four a l a r m s w e r e a c t i v a t e d . Add i t i ona l f i l l ing would t r i g g e r the fifth a l a r m which would a u t o m a t i c a l l y shu t in the w e l l be fo re sp i l l ing out of the t ankage could o c c u r .

The l o w - l e v e l a l a r m w a s a l s o u s e d in e a c h of the four w a t e r s t o r a g e t anks to i n d i c a t e to the p e r s o n n e l tha t a tank w a s e m p t y . The a l a r m a u t o m a t i c a l l y shut down the h i g h - p r e s s u r e w a t e r d i s p o s a l p u m p . T h e r e w a s a l s o a v i s u a l gauge on the e x t e r i o r of the t anks tha t i n d i c a t e d depth of f i l l .

The tw^o c o n d e n s a t e s t o r a g e v e s s e l s had i n s t r u m e n t a t i o n s i m i l a r to tha t on the w^ater s t o r a g e t a n k s ; i . e . , h igh- and l o w - l e v e l s i g n a l s , h i g h - l e v e l a u t o m a t i c shu tdown and a s ight g l a s s to d e t e r m i n e dep th of f i l l .

The h i g h - p r e s s u r e w a t e r d i s p o s a l p u m p w a s equ ipped with a h i g h - and low-p r e s s u r e l i m i t sw i t ch . The h i g h - p r e s s u r e swi t ch w a s p r e s e t in o r d e r not to o v e r p r e s s u r i z e the d i s p o s a l w e l l or i n t e r c o n n e c t i n g p ip ing . The swi t ch a l s o r e a c t e d on s t a r t u p if the w a t e r d i s p o s a l l ine f roze o r the w a t e r f i l t e r s w e r e p lugged by imnned ia t e ly shu t t ing down the p u m p . The l o w - p r e s s u r e swi t ch would i n d i c a t e a r u p t u r e d l ine and s top o p e r a t i o n of the p u m p .

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I

15 16 17 18 19 2 0

NOVEMBER 1973

2 8 2 9 3 0 31

JANUARY 1974

6 7 8 9

FEBRUARY 1974

10 II 12 13 14 15

Figure 18. Time his tory of wa te r production (kilopounds) per unit volume (MMSCF) of total gas flow, with co r re la t ive bottom-hole p r e s s u r e s .

The flare stack ignition sys tem util ized e lec t r i ca l arcing to ignite the pilot gas and flame sensors detecting heat from the pilot flame controlled the e lec t r i ca l a rc ing . If the pilot f lames were extinguished, the heat sensor auto­mat ica l ly s ta r ted the ignition sequence again, and activated an a l a rm light on the a l a r m panel until the pilot flame was re- igni ted .

The Ala rm and Control Panel (Figure 19) controlled and monitored the safety functions during the production testing of the well. The separa to r was equip­ped with three safety devices . A l o w - p r e s s u r e switch would be act ivated if the re were a rupture in the sys tem and the well would be shut in.

A h i g h - p r e s s u r e switch would also shut in the well if there were no downstream flow past the sepa ra to r . This could be caused by freezing, plugging, or c los ­ing the flow line choke valve downstream of the sepa ra to r . A flow switch would be activated. If the p r e s s u r e relief disc were to rupture and allow the gas to flow through the sepa ra to r to the f lare stack without removing the liquids, the well would be shut in by the consequent activation of a flow switch.

A high- and l o w - p r e s s u r e switch was instal led at the wellhead. The low-p r e s s u r e switch would be activated by plugging of the well or rupture of the surface piping sys tem and would shut in the well . The h i g h - p r e s s u r e switch was p r e se t in o rde r not to o v e r p r e s s u r i z e the piping and equipment downstream of the well . The well would also shut in if the switch was act ivated.

The pr incipal control valve for shutting in the well automatical ly is the e m e r ­gency shutdown valve located immediately downstream from the wellhead. This valve requ i res pneumatic p r e s s u r e to operate and was therefore connected to the ins t rument control gas supply. Loss of gas p r e s s u r e automatical ly c loses the valve. The valve is e lec t r ica l ly controlled from the a l a r m and con­t ro l panel . In addition to this emergency shutdown valve, a shutdown valve was located at the inlet of the sepa ra to r , water disposal sys tem, and con­densate disposal sys tem. Any malfunction, whether t rue or false, that t r i g ­ge r s the emergency shutdown valve also c loses the additional shutdown valves . A bypass switch was instal led so that the water disposal sys tem could operate even though the well was shut in.

4 .6 OPERATIONAL PROCEDURES

Two per sons were on duty around the clock during the production testing of the well . The two personnel monitored the production equipment for normal functioning and recorded data and operating detai ls for evaluation. In the case of an emergency, tw o pe rsons could take co r rec t ive actions more quickly than one. In any event, the presence of H T S required that two persons be on hand as a safety m e a s u r e .

During the production testing of the well, the following data were recorded on an hourly basis by the operat ions personnel :

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irtiiiiiiiiiimmiOtiMtniatnit I'Uft''' «

f\

1* 1

ALARM AND CONTROL PANEL

0 0 0 0 0 0 0 H/LP-I H/LP-2 FS- I REMOTE H/LP-3 H/LP-4 PILOT

SHUT-DOWN FLAME OUT

WATER STORAGE

© CONDENSATE STORAGE

STORAGE TANKS FULL fQ

G 1 FLOW INTO TANK (Q

® ^ 6) ^ (INDICATOR ONLY] ^ &

0 0 0 0 HIGH TANK LEVEL WARNING 0 0

WATER DISPOSAL 6

[(ON]

TANK SELECTOR i«^i;n9V>MMimpi^n!MfmiPi>|ii!m>HWii.Jiiu 11(111 HI ij VI w

CONDENSATE DISPOSAL

PUMP 1 ^

Y5 LOW TANK LEVEL^Y^ ((Y

5

SHU TIMER

-DOWN SWITCH

muMt^wuKfnmwi'm' t%

TANK SELECTOR

Itatiii

R - RED yl YELLOW F i g u r e 19. Layout of the A l a r m and C e n t r o l P a n e l . G:GREEN

-36-

Date Time Opera to rs init ials Wellhead readings

a. Casing p r e s s u r e in psig b. Tubing p r e s s u r e in psig c. Flowing t empera tu re in degrees F .

Separa tor Readings

a. Ins t rument gas p r e s s u r e in psig b. Operating t empera tu re in degrees F . c. Operating p r e s s u r e in psig d. Cumulative water production in b a r r e l s e. Tank number receiving water f. Cumulative condensate production in b a r r e l s g. Tank number receiving condensate h. Remarks

F in -Fan Coolers (second production tes t only)

a. Inlet t empera tu re in degrees F . b. No. 1 outlet t empera tu re in degrees F . c. No. 2 outlet t empera tu re in degrees F . d. No. 3 outlet t empera tu re in degrees F .

Main Gas Line Orifice Readings

a. P la te s izes b. Ups t ream p r e s s u r e in psig c. Ups t ream tempera tu re in degrees F . d. Downstream p r e s s u r e in psig

Wet gas flow ra te in MMSCF/D Specific gravity re la t ive to a i r of gas Water tank levels

a. Water tank #1 depth m e a s u r e m e n t in feet b. Water tank #2 depth nneasurement in feet c. Water tank #3 depth measu remen t in feet d. Water tank #4 depth measu remen t in feet

Condensate tank levels

a. Condensate tank #5 depth m e a s u r e m e n t in feet b. Condensate tank #6 depth m e a s u r e m e n t in feet

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12. Water injection sys tem readings

a. Water pump injection p r e s s u r e in psig b. Cumulative water injection amount in b a r r e l s (two m e t e r s ) c. Suction tank number

13. Condensate injection sys tems readings . These data (s imi lar to those for the water injection system) were not taken because no con­densate was found during the production t e s t s . However, the pump and m e t e r s were used, and data recorded , for t ransfer of dilution water to the water tank being used during pa r t of the f i rs t production tes t to nninimize boiling of the separa ted wa te r .

Considerable use was made of te lecopiers to t r ansmi t data and other documents to the GJCP and e l sewhere . Product ion test data generated by the operat ions personnel in the field were sent via te lecopier to the GJCP where the data was typed on the appropr ia te fo rms , telecopied to the EW for approval , and then t ransmit ted via mai l or te lecopier to in te res ted project par t ic ipants .

A copy machine located in the office t r a i l e r at the EW provided copies of approved data to in te res ted project par t ic ipants in the field.

4.7 CiAS ^ JPPLY/WAT ER DISPOSAL WELL

! hf Vdwii L.r«-eK Citiv ernnieut Nunaber 1 well, located about 1, 340 ft S18°W of the EW, was s temmed pr ior to the detonation of the nuclear explosives as a containment precaution. A Baker Model D packer was set at 5,653 ft KB. A Baker Model C re t r ievable bridge plug was set at 5, 580 ft KB. The well was then s temmed with sand to 5, 530 ft KB and cement to 4, 377 ft KB.

As tentatively planned, the well was reen te red in June, 1973, and recompleted in September, 1973, as both a gas producing well and a contaminated-water disposal well . Reentry operat ions commenced on June 19, 1973. The top of soft cement was tagged at 4, 364 ft KB and the cement was dri l led out with no problems until a depth of 5, 524 ft KB was reached on June 26, 1973, when the bit encountered meta l . The problem was identified as collapsed casing at and below the bottonn of the cement plug. Twenty-one m o r e days of milling through the collapsed section, which had a minimum apparent bore of 3-1/2 in. , were requ i red to tag the Model D packer at 5, 654 ft KB. Attempts to remove the Model D packer were unsuccessful, as also were a t tempts to mil l out the bot­tom slips and allow the packer to drop down hole. The packer was finally left open at a depth of 5, 667 ft KB.

The well was first recompleted on August 4 with a Baker Lockset packer on 2-1 / I h - i n . fubinji set af '"•, 64^. S ft KB and 1. 9-in. tubing run to ^, ^11 ft KB. Attempts to bri'it; the we]J uti. prf)duftion trf)n\ the perforated zone. S, 600 to

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5, 630 ft K B , inc lud ing an a c i d i z i n g t r e a t m e n t of the zone on A u g u s t 24, w e r e not s u c c e s s f u l and the d e c i s i o n w a s m a d e about Augus t 31 to ki l l the wel l for a p lanned f r a c t u r e of the zone ^, 08Z to S, 128 ft K B . Thi.s was a c c o m p l i s h e d on S e p t e m b e r 8 and the wel l f lowed back s u c c e s s f u l l y . On S e p t e m b e r 12 the w e l l w a s t e s t e d t h r o u g h a c r i t i c a l flow p r o v e r a t r a t e s up to abou t 500 M C F / D .

The w e l l w a s aga in k i l l ed and r e c o m p l e t e d with a B a k e r Mode l FH h y d r o s t a t i c p a c k e r on 2 - l / l 6 - i n . tubing s e t a t 5, 293 ft K B . A B a k e r F plug n ipple w a s l o c a t e d a t 5, 288 ft K B . The 2 - 1 / 1 6 - i n . tubing w a s h y d r o t e s t e d jo in t by jo in t a s i t w a s r u n in the h o l e . Two bad j o i n t s w e r e r e j e c t e d . The 1. 9 - in . tubing for g a s p r o d u c t i o n w a s run in and l anded a t 5, 084 ft K B . T h e w e l l w a s s w a b b e d in and f lowed to the pit to c l e a n up . At the tinne of shut in on S e p t e m b e r 17, 1973, the es t imia ted flow r a t e w a s 450 M C F / D .

The d e t a i l e d da i ly d r i l l i n g r e p o r t s a r e g iven in Append ix B . T h e a s - b u i l t down-hole c o m p l e t i o n de t a i l i s shown in F i g u r e 20.

Af t e r the w o r k o v e r r i g w a s r e m o v e d , the w e l l h e a d w a s e n c l o s e d in a n i n s u l a t e d w o o d - f r a m e s t r u c t u r e and an e x p l o s i o n - p r o o f e l e c t r i c h e a t e r w a s i n s t a l l e d for the w i n t e r o p e r a t i o n s . A c o n v e n t i o n a l 3 - p h a s e s e p a r a t o r w a s i n s t a l l e d on the F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l pad and c o n n e c t e d to the w e l l h e a d f ix ­t u r e to supply gas for the P r o j e c t P i o Blanco p r o d u c t i o n and t e s t i n g p r o g r a m . Tw^o h i g h - p r e s s u r e pipe l i n e s w e r e la id to the EW <rea. one to r the na t i . ra l >ias supply and the second for the w a t e r d i s p o s a l l i n e . The w.dter dit>posaJ l ine w a s heat t aped , i n s u l a t e d , and w r a p p e d with plasti< s h e e t i n y to w e a t h e r p r o o f the i n su l a t i ng m a t e r i a l .

U s e of the F a w n C r e e k G o v e r n m e n t No . 1 w e l l a s a d i s p o s a l w e l l for c o n t a m ­i n a t e d w a t e r s e p a r a t e d out d u r i n g the two p r o d u c t i o n s r e q u i r e d the p e r n n i s s i o n of the C o l o r a d o W a t e r Qua l i ty C o n t r o l C o m m i s s i o n , and the c o n s e q u e n t i s s u ­a n c e of a p e r m i t by the C o l o r a d o D e p a r t m e n t of H e a l t h . A p p l i c a t i o n for s u c h a p e r m i t w a s m a d e on J u n e 1 1 , 1973 , and a publ ic h e a r i n g he ld be fo re a H e a r i n g Off icer for the Wate r Qua l i ty C o n t r o l C o m m i s s i o n on S e p t e m b e r 24, 1973 . The t ex t of the F i n d i n g s of F a c t by the H e a r i n g Off icer and of the P e r m i t for S u b s u r f a c e D i s p o s a l , wh ich w a s i s s u e d on N o v e m b e r 9, 1973 , a r e g iven in Append ix C. The p r i n c i p a l s t i p u l a t i o n s of the p e r m i t w e r e that the v o l u m e of w a t e r i n j ec t ed could not e x c e e d 24, 000 bb l s and the t r i t i u m c o n c e n ­t r a t i o n could not e x c e e d 0. 05 m i c r o c u r i e s p e r m i l l i l i t e r (/itCi/ml) wh i l e the in j ec t ion p r e s s u r e could not e x c e e d 1800 p s i g .

Dur ing the f i r s t p r o d u c t i o n t e s t , about 1873 bb l s of w a t e r w e r e p r o d u c e d a t the s e p a r a t o r and s t o r e d for a n a l y s i s p r i o r to d i s p o s a l . Di lu t ion of the p r o ­duced w a t e r wi th f r e s h w a t e r to d r o p the t e m p e r a t u r e below the l o c a l bo i l ing po in t (200 ° F ) and d e c o n t a m i n a t i o n of e q u i p m e n t r a i s e d the volunne of w a t e r to be i n j e c t e d to 3378 b b l s , wi th an a v e r a g e t r i t i u m c o n c e n t r a t i o n of 0. 029 H C i / m l , w e l l w i th in the d i s p o s a l p e r m i t l i m i t a t i o n s .

Dur ing the s e c o n d p r o d u c t i o n t e s t , when the b o t t o m - h o l e p r e s s u r e w a s a l lowed to d r o p to a va lue ius t above the s t e a m point , about 11 , 470 hbls of

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DEPTH(FEET) 5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

PERFORATED INTERVAL "

5084

5126

6016 , 6022

1.9 TUBING

2'/6' TUBING

• BAKER F PLUG NIPPLE 5288 ' *

" HYDROS! 5293'*•

.BAKER "FH" HYDROSTATIC PACKER

5 5" CASING

MODEL D PACKER (OPEN)5667

*5257' ) AFTER CHANGE OF 2'/«' • • 5 2 6 2 ' I TUBING, NOVEMBER 1974

NOTE BRIDGE PLUG AND TWO SACKS CEMENT AT 6460'.

FORT UNION MESAVERDE

Figure 2 0 . A s - o u i l t downhole c o m p l e t i o n d e t a i l . Fawn C r e e k

G o v e r n m e n t No. 1 Wel l .

- 4 0 -

water were separa ted and s tored for analysis and subsequent d isposal . The Colorado Water Quality Control Division was requesced on January 16, 1974 to relax the l imit on t r i t ium concentrat ion from 0. 05 / iC i .ml to 0. 075 >tCi. ml , in the light of expert test imony before the Hearing Officer that the value of 0. 05 MCi/ml was a best es t imate with some probable e r r o r . The request w^as denied, however, unless further public hear ings were held on the ques ­tion. Because completion of prepara t ions , for the second production tes t was imminent , the decision was made to proceed under the existing l imitat ion, and to dilute the water to the requi red concentrat ion upper l imit . Accordingly, a total of 17, 459 bbls were injected during the second production tes t with an average t r i t ium concentrat ion of 0. 048 >*Ci/ml. Without dilution, the average t r i t ium concentrat ion of the separa ted water was 0. 074^iCi /ml , jus t under the proposed amended value. The cost of the additional effort requi red to dilute has not been evaluated, but it was cer ta in ly a smal l fraction of the cos ts of additional public hear ings , legal fees , and personnel , and other cos ts assoc ia ted with project delays .

During the course of the second production tes t , some tenuous evidence was obtained that smal l amounts of t r i t ium were being found in liquids produced with the gas from the Fawn Creek Government No. 1 wel l . After completion of l abora tory analyses of gas and water samples ^nd evaluation of the data, it was concluded'^ ' that the data were inadequate to de te rmine the source or magnitude of the observed t r i t ium activity or the mechan i sm for the occur rence of the activity in the produced l iquids.

To answer the quest ions , t e s t s were per formed on the well over the per iod Apri l 5-11, 1974, inclusive. A plug was set in the injection s t r ing on Apr i l 5, 1974; the s t r ing was p r e s s u r i z e d with fresh water and the p r e s s u r e recorded for a per iod of 88 hour s . A p r e s s u r e drop was observed which was equivalent to a leak ra te of one gallon per day flowing into the gas producing annulus. The well was flowed to the mudpit for a per iod of 48 hours , and was periodical ly sampled for t r i t ium in the gas and in the water . All gas samples were nega­tive with r e spec t to t r i t ium. The init ial water samples showed t r i t ium con­centra t ions in the neighborhood of 2500 p C i / m l . The concentrat ion dec reased to one- th i rd of that value by the end of the test .

Evaluation of the t r i t ium concentrat ions and the volumes of water involved lead to the conclusion that the data were consis tent with the leak ra te of one gallon per day observed in the p r e s s u r e tes t .

Remedial action was la te r taken in November -December 1974, p r io r to r e s u m p ­tion of further testing act ivi t ies in a new s ide t racked well , RB-AR-02 (which a r e beyond the scope of this repor t ) , in the form of rep lacement of the 2 -1 /16 -in. injection s t r ing . The final downhole configuration is shown in Figure 20. The daily r epor t s for this operation a r e included in Appendix B.

4. 8 SCHEDULE

The schedule as accomplished of the production test ing and p r e s s u r e buildup monitoring is shown in F igure 21 .

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I

1 DECONTAMINATE EQUIPMENT |AND MOVE OFF RIG

COMPLETE INSTALLING. TESTING PRODUCTION, TEST EQUIPMENT

WATER DISPOSAL 1 PERMIT ISSUED

FIRST PRODUCTION TESTING

CONTAMINATED WATER 1 DISPOSAL

FIRST BHP BUILDUP MONITORING

INSTALL FIN-FAN COOLERS

SECOND PRODUCTION TESTING

CONTAMINATED WATER DISPOSAL

SECOND BHP BUILDUP 1 MONITORING

FAWN CREEK WELL TESTS

\

V

• " . .

| T 0 JUNE 24, 1975 > j

OCT NOV

1973

DEC JAN FEB MAR

1974

APR MAY

Figure 21 . Product ion testing and p r e s s u r e buildup monitoring schedule as accomplished.

5. RADIOLOGICAL SAFETY AND EFFLUENT DOCUMENTATION

Radiological protect ion and documentation of radioact ive effluents \vas provided in a l imited way during the p rog rammed waiting per iod of th ree months and fully during the reen t ry dri l l ing and both production tes t pe r iods . The bulk of the work was per formed by the Eber l ine Inst rument Corporat ion under contract to CER. CER operated its TRY-KRY monitoring sys tem for gaseous effluent documentation during r e l e a s e s through the DWC and during both production tes t pe r iods . The radiological protect ion equipment used on the project , apar t froin the TRY-KRY, was government-furnished from existing equip­ment on loan to CER. Expendable equipment and supplies was furnished by CER.

5. 1 OPERATIONAL GUIDES

Radiation exposure c r i t e r i a and radioact ive concentrat ions guides were gov­erned by AEC Manual Chapter 0524 as augmented by le t t e r , AEC PNE/DAT, "Radiological Safety Guidance for Exper iments involving Nuclear Stimulation of Natural Gas Wells , " dated April 17, 1972, In the event of accidental or emergency exposure , provis ions of both AEC Manual Chapters 0502 and 0524 as augmented by the mentioned le t te r w e r e to be followed as applicable.

Pe r sonne l radiological explosure c r i t e r i a were that the quar te r ly whole body exposure should not exceed 3 r em, while the annual should not exceed 5 r em, with other dose commitments for var ious pa r t s of the body. In p rac t i ce , al l dose m e a s u r e m e n t s made on project par t ic ipants were not detectable .

The toxicological exposure c r i t e r i a were the threshold l imit values of toxic m a t e r i a l s as recommended by the Amer ican Conference of Government Industr ia l Hygienists or those deriving from the Occupational Safety and Health Act.

Considering only the most likely contaminant to be found, t r i t ium, the c r i t e r ion for r e l ea se of vehicles and other equipment for public use e lsewhere was that any contamination should not exceed 1000 dis integrat ions per minute (dpm) on any 100 cm^.

5.2 ACCESS CONTROL

An Access Control t r a i l e r was located at the entrance to the EW pad to se rve these functions: to act as the cent ra l control point for radiological monitoring support operat ions in the field; to be the source of i ssue and supply for radio­logical safety support i tems such as portable survey ins t rument s , dos imet r i c devices , r e sp i r a to ry protect ion equipment, ant i -contaminat ion clothing, and other re la ted supplies; to act as the Access Control Point for personnel and vehicular traffic into "controlled a r e a s " where the p resence of d i spersed radioact ive m a t e r i a l s ex is t s ; to provide l imited d ress ing and washing faci l i t ies

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and supply of full A n t i - C c lo th ing for the r e g u l a r w o r k f o r c e on d r i l l i n g o p e r a t i o n s when r e q u i r e d ; and to p r o v i d e a supply of l i m i t e d A n t i - C c lo th ing for v i s i t o r s .

The a c c e s s c o n t r o l t r a i l e r r e m a i n e d in the EW a r e a du r ing the p r o g r a m m e d de l ay p e r i o d , r e e n t r y d r i l l i n g , and the two p r o d u c t i o n t e s t p e r i o d s .

To e n s u r e tha t p r o j e c t p a r t i c i p a n t s w e r e a w a r e of po t en t i a l e x p o s u r e s and good p r a c t i c e s , EIC r o u t i n e l y p r o v i d e d a r a d i o l o g i c a l safe ty i n d o c t r i n a t i o n to a l l w o r k e r s on s i t e and to new w o r k e r s a s they a r r i v e d .

5. 3 P E R S O N N E L DOSIMETRY AND 3IOASSAY

F r o m the s t a r t of r e e n t r y d r i l l i n g th rough the f i r s t p r o d u c t i o n t e s t , a p r o g r a m of p e r s o n n e l d o s i m e t r y w a s conduc ted which app l i ed to a l l p r o j e c t p a r t i c i p a n t s on s i t e , inc lud ing v i s i t o r s . T h e r m o l u m i n e s c e n t d o s i m e t e r s ( T L D ' s ) w e r e i s s u e d to each p e r s o n for w e a r on s i t e . Al l badges w e r e r e a d o u t r o u t i n e l y on a m o n t h l y b a s i s o r on d e p a r t u r e of the p a r t i c i p a n t or v i s i t o r f r o m the s i t e . U r i n e s a m p l e s w e r e a l s o p r o v i d e d by p r o j e c t p a r t i c i p a n t s b e f o r e r e e n t r y d r i l ­l ing and be fo re and a f t e r the f i r s t p r o d u c t i o n t e s t . B i o a s s a y s for - H w e r e p e r ­f o r m e d on the u r i n e s a m p l e s . Al l T L D r e a d o u t s w e r e b a c k g r o u n d a s w e r e a l l b i o a s s a y s .

B e c a u s e of the f a v o r a b l e r e s u l t s du r ing the r e e n t r y d r i l l i n g and f i r s t p r o d u c ­t ion t e s t , d u r i n g the s e c o n d p r o d u c t i o n t e s t , a m u c h m o r e l i m i t e d p r o g r a m of d o s i m e t r y w a s u n d e r t a k e n . T L D ' s w e r e i s s u e d only to CER and EIC p e r s o n s having a c c e s s to r a d i o a c t i v e c a l i b r a t i o n s o u r c e s . B i o a s s a y s w e r e l i m i t e d to p e r s o n s handl ing c o n t a m i n a t e d m a t e r i a l s . Aga in , a l l r e s u l t s w e r e b a c k g r o u n d .

EIC m a i n t a i n e d a l l e x p l o s u r e r e c o r d s and f u r n i s h e d t h e m to CER a f te r each p r o d u c t i o n t e s t . C E R f o r w a r d e d the e x p o s u r e r e c o r d s to the Reyno lds E l e c t r i c a l and E n g i n e e r i n g Connpany for i n c l u s i o n in the NVOO m a s t e r e x p o s u r e f i l e s .

5 .4 E F F L U E N T DOCUMENTATION DURING T H E DELAY P E R I O D

EIC m o u n t e d a b e t a - g a m m a r a d i a t i o n d e t e c t o r a t the w e l l h e a d to m o n i t o r for Q C

f i s s i o n p r o d u c t r a d i o a c t i v i t y , p r i m a r i l y ° K r . The output of the d e t e c t o r w a s r e c o r d e d con t inuous ly on a s t r i p c h a r t r e c o r d e r i n s t a l l e d in the a c c e s s c o n ­t r o l t r a i l e r n e a r the EW. The s y s t e m w a s a l a r m e d a t a p r e s e t l e v e l and i n c l u d e d a f a i l - s a f e f a i l u r e l ight to i n d i c a t e m a l f u n c t i o n of the d e t e c t o r . The s y s t e m w a s i n s p e c t e d da i ly by a qual i f ied p e r s o n . EIC m a n n e d the EW d u r ­ing dayl igh t h o u r s s e v e n days a week d u r i n g th is p e r i o d to m a i n t a i n the d e t e c t i o n s y s t e m and m a k e p e r i o d i c s u r v e y s of the i m m e d i a t e v i c in i ty of the EW. No da ta above b a c k g r o u n d w e r e ob ta ined du r ing the p e r i o d .

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5. 5 EFFLUENT DOCUMENTATION DURING INITIAL REENTRY DRILLING

During the f i rs t 4, 700 feet of reen t ry dri l l ing radiological protect ion p r o ­cedures ^vere l imited to that descr ibed below. No data above background were obtained.

5. 5. 1 An RM-3C with a bare Anton 112 be ta -gamma detector was provided on the r ig floor work a rea to sense Kr or other fission products with continuous recording off the r ig . The detector was set to a l a r m at twice the normal upper l imit of background read ings .

5. 5. 2 The output of the shielded scinti l lat ion detector on the mud re tu rn line was continuously recorded off the r ig , with an a l a r m set at twice the normal upper l imit of background read ings .

5. 5. 3 Daily samples of mud and any dr i l l cuttings re turned were obtained from the mud re turn line and analyzed for par t icula te fission p r o ­ducts by gamma spec t ra at 1-pCi/ml sensit ivity referenced to Cs and by liquid scinti l lat ion for ^H at 1-pCi/ml sensi t ivi ty.

5. 5. 4 Mud and waste water which dripped from the dri l l ing equipment w e r e collected from the ce l lar or dr ip pans in a lined pit. P r i o r to disposal , samples of the collected water were assayed for H.

5. 5. 5 A gas f lare line monitoring sys tem was instal led on the f lare line downstream from the DWC unit, to be activated when the DWC unit was used.

5 .5 .6 A rig air sampler and a site a i r sample r e l sewhere , each consisting of a par t icula te fil ter and a charcoal ca r t r idge were continuously operated, with daily change of f i l t e r s . The par t icula te f i l ters were analyzed for g ross beta and alpha and gamma scanned. The ca r t r idges were gamma scanned.

5. 5. 7 The r ig floor a i r was sampled for H with a molysieve a i r mo i s tu r e absorbent . Samples were collected daily and were assayed for H by liquid scinti l lat ion counting with a sensi t ivi ty of 2 p C i / m l for a 5-ml water sample .

5. 5. 8 T e m p e r a t u r e , ba rome t r i c p r e s s u r e , and humidity were recorded to provide neces sa ry data for quantifying si te a i r and rig a i r s amples .

5. 6 EFFLUENT DOCUMENTATION DURING SUBSEQUENT REENTRY DRILLING

Below a depth of 4, 700 feet, which was reached within four days of the s t a r t of dri l l ing on September 22, 1973, the radiological p r o g r a m outlined above

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w a s con t inued and a u g m e n t e d a s d e s c r i b e d be low.

5 . 6 . 1 A qua l i f ied r a d i o l o g i c a l p r o t e c t i o n m o n i t o r , equipped with a p o r t a b l e b e t a - g a n n m a s u r v e y m e t e r and a p o r t a b l e e x p l o s i m e t e r , w a s on duty on o r n e a r the d r i l l r i g at a l l t i m e s . When t r i p p i n g out of the h o l e , e a c h s t and of p ipe w a s m o n i t o r e d a s the jo in t w a s b r o k e n .

5 . 6 . 2 The c o l l e c t i o n and a n a l y s i s s c h e d u l e for m u d , w^ater, a i r , and d r i l l cu t t ing s a m p l e s was i n c r e a s e d f rom once p e r day to once p e r 8 - h o u r shif t .

5. 6. 3 Mad , d r i l l c u t t i n g s , and w a s t e w a t e r w e r e d i s p o s e d of with no r e s t r i c t i o n s i m p o s e d by r a d i o a c t i v i t y a s long as t h e r e w a s no d e t e c t a b l e f i s ­s ion p r o d u c t a c t i v i t y . The only c o n t a m i n a n t found w a s t r i t i u m a s m o i s t u r e in so l id s and in d e c o n t a m i n a t i o n w a t e r . T r i t i a t e d w a t e r f r o m d e c o n t a m i n a t i o n a c t i v i t i e s w a s t r a n s f e r r e d to one of the s t o r a g e t a n k s for l a t e r in jec t ion in to the d i s p o s a l w e l l . A few b a r r e l s of t r i t i a t e d so l id w a s t e w e r e a c c u m u l a t e d for s u b s e q u e n t d i s p o s a l in an a p p r o v e d m d m e r .

5. 7 EFb^LUENT DOCUMENTATION DURING PRODUCTION TESTING

Dur ing the p r o d u c t i o n t e s t i ng p e r i o d , gas p r o d u c e d f rom the c h i m n e y w a s con­t inuous ly s a m p l e d and m o n i t o r e d by the p r o d u c t i o n t e s t s a m p l i n g sys tenn shown s c h e m a t i c a l l y in F i g u r e 22 . The o n - l i n e s y s t e m was coup led to the f l a r e l ine b e t w e e n the s e p a r a t o r and the f l o w - m e a s u r e m e n t e q u i p m e n t to p r o v i d e a r e a ­sonab ly i s o k i n e t i c and h o m o g e n e o u s s a m p l e of the gas s t r e a m being f l a r e d . The p r o d u c t i o n t e s t s a m p l i n g s y s t e m d e h y d r a t o r p r o v i d e d p r e s s u r e r e d u c t i o n and cool ing for c o m p l e t e l iquid r e m o v a l p r i o r to the gas e n t e r i n g the r a d i a t i o n m o n i t o r i n g s e c t i o n s . Af te r r a d i a t i o n m e a s u r e m e n t s w e r e nnade on the d ry gas s t r e a m , the gas was r e l e a s e d to the a t m o s p h e r e t h rough a 20-foot high ven t a t a r a t e of s e v e r a l CFM^ The s h i e l d e d g a m n i a s c i n t i l l a t i o n d e t e c t o r w a s r e c o r d e d and the a l a r m se t at tw ice the n o r m a l u p p e r l eve l of b a c k g r o u n d r e a d i n g s to a l e r t if any u n e x p e c t e d f i s s ion p r o d u c t s w e r e in the g a s . No such r e a d i n g s above b a c k g r o u n d w e r e ob t a ined . The s a m p l e l ine w a s h e a t e d with h e a t t a p e s and m a i n t a i n e d the oil and m o i s t u r e in v a p o r f o r m unt i l the g a s s a m p l e r e a c h e d the hea t e x c h a n g e r , thus keeping the l ine f rom f r eez ing up d u r i n g u n f a v o r a b l e c o n d i t i o n s . The bulk l iqu ids t r a p d r o p p e d out the bulk of the w a t e r which w a s t r a n s f e r r e d to the c o n t a m i n a t e d w a t e r s t o r a g e t anks for in jec t ion into the d i s p o s a l w e l l . The i n t e g r a t i n g flow m e t e r w a s u s e d to quantify the a n a l y s e s of the p a r t i c u l a t e and c h a r c o a l s a m p l e s . The s a m p l e man i fo ld , e x h a u s t , and c a l i b r a t i o n s y s t e m w e r e so c o n n e c t e d that each d e t e c ­tor w a s i ndependen t of the o p e r a t i n g condi t ion of the o t h e r .

Dar ing both p r o d u c t i o n t e s t p e r i o d s , m e a s u r e m e n t s w e r e m a d e a s d e s c r i b e d below. The T R Y - K R Y s y s t e m w a s o p e r a t e d p e r i o d i c a l l y and p r o v i d e d da ta on the c o n c e n t r a t i o n s of Kr and A r . It was found that the low l e v e l s of

H e n c o u n t e r e d and the i n t e r f e r i n g r e s p o n s e of the s y s t e m to the h i g h e r l e v e l s

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SHIELDED GAMMA SCINTILLATION

DETECTOR

SAMPLE SECTION

HEATED LINE

6 HEAT

EXCHANGER

PRESSURE REGULATOR a GAUGE

MOLYSIEVE TOWERS

SAMPLE PORT

•I HEATER!

COOLING AIR

f6

BULK LIQUID TRAP

OTHER ^

PRESSURE REGULATOR a GAUGE

FUOW METER y^ JREGULATQR

JAUGE

GAS PARTICULATE a CHARCOAL SAMPLER

PRESSURE REGUtATORS a GAUGES

PRESSURE REGULATORS

a GAUGES

TRY-KRY KRYPTON

i OXIDIZER

EXHAUST EXHAUST

CH4 3Hin 85KR in N2 CH4 CH4

GAS CALIBRATION SYSTEM

FIELD GAS

•VACUUM IPUMP

EXHAUST

Figure 22. Product ion test gas sampling sys tem.

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of -^'Ar p r e c l u d e d the eva lua t ion of H c o n c e n t r a t i o n s by the T R Y - K R Y . The k r y p t o n c h a m b e r w a s o p e r a t e d and r e c o r d e d con t i nuous ly to p r o v i d e da ta on

Kr c o n c e n t r a t i o n s for c o m p a r i s o n with the T R Y - K R Y . The "- 'Kr c a l i b r a t i o n g a s e s for both s y s t e m s w e r e n o r m a l i z e d to a g r e e wi th a c a l i b r a t i o n s a m p l e p r o v i d e d by the Qual i ty A s s u r a n c e B r a n c h , Na t iona l E n v i r o n m e n t a l R e s e a r c h C e n t e r , U . S . E n v i r o n m e n t a l P r o t e c t i o n Agency , Las V e g a s , Nevada .

The o x i d i z e r •was o p e r a t e d s e v e r a l t i m e s da i ly to p r o v i d e c o m b u s t i o n w a t e r s a m p l e s f r o m the g a s . T h e s e w e r e coun ted by l iquid s c i n t i l l a t i o n m e a n s to p r o v i d e da ta on the H c o n c e n t r a t i o n .

P a r t i c u l a t e s in the d ry cond i t ioned gas w e r e i n t e g r a t e d ove r e a c h p r o d u c t i o n t e s t p e r i o d and s u b s e q u e n t l y counted with a s e n s i t i v e Ge (Li) s y s t e m in one of E I C ' s l a b o r a t o r i e s .

S a m p l e s of w a t e r w e r e t aken f rom the s e p a r a t o r da i ly and f rom each w a t e r tank a f t e r f i l l ing. A n a l y s e s w e r e m a d e for H c o n c e n t r a t i o n , by g r o s s be ta and a lpha count ing , and by g a m i n a s p e c t r o m e t r y . Al l da ta ob ta ined w e r e at b a c k g r o u n d l e v e l s excep t for H. No s a m p l e s of h y d r o c a r b o n c o n d e n s a t e s w e r e a n a l y z e d , for none w a s s e p a r a t e d du r ing e i t h e r p r o d u c t i o n t e s t .

A s i t e a i r p a r t i c u l a t e and m o i s t u r e s a m p l i n g s y s t e m w a s o p e r a t e d con t inuous ly du r ing p r o d u c t i o n t e s t i n g . P a r t i c u l a t e f i l t e r s w e r e a n a l y z e d by g r o s s be ta and a lpha coun t ing . Both the p a r t i c u l a t e and c h a r c o a l f i l t e r s w e r e a n a l y z e d by g a m m a s p e c t r o m e t r y . The a i r m o i s t u r e sannples w e r e a s s a y e d for H by l iquid s c i n t i l l a t i o n m e a n s . All da t a w e r e at b a c k g r o u n d l e v e l s excep t for H,

Dur ing both p r o d u c t i o n t e s t s , gas and l iquid s a m p l e s w e r e t aken by EIC in c o n t a i n e r s supp l i ed by L L L and t u r n e d over to L L L ' s r e p r e s e n t a t i v e for s h i p m e n t .

5 .8 SUMMARY O F E F F L U E N T DATA

The da ta ob ta ined in the C E R / E I C effluent d o c u m e n t a t i o n effor t have been r e p o r t e d in d e t a i l in R e f e r e n c e s 6 and 7. Data o b t a i n e d by L L L in gas s a m p l e a n a l y s e s i s i nc luded in R e f e r e n c e 7. In s u m m a r y f o r m , d u r i n g the two p r o -duc t ion t e s t s f r o m the u p p e r c h i m n e y about 52 c u r i e s (Ci) of H, 776 Ci of

-•Kr, and 89 Ci of -*'Ar w e r e r e l e a s e d to the f l a r e s t a c k , wi th f r a c t i o n a l c u r i e a m o u n t s of ^ A r , ^ ^ C , and X e . A t r a c e quan t i t y , on the o r d e r of 10"^ Ci, of 203j^g^ w a s r e l e a s e d du r ing the s econd d r a w d o w n . ^ ^ H g w a s not d e t e c t e d du r ing the f i r s t d r awdown . About 150 Ci of -'H in the p r o d u c e d w a t e r w e r e in j ec ted into the w a t e r d i s p o s a l w e l l .

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6. RADIOLOGICAL MONITORING IN THE ENVIRONMENT

The routine radiological nnonitoring p r o g r a m for the environment as descr ibed in Reference 2 was extended to July 31, 1974, as a r e su l t of the decision to drawdown the top chimney the second t ime . The detai led r e su l t s of this effort have been repor ted by EIC in a set of qua r t e r ly r epo r t s collectively identified as Reference 8. The las t th ree of these r e p o r t s , covering the period November 1973 to July 1974, re la te to the two RB-E-02 production tes t pe r iods . Sum­m a r i e s of these quar t e r ly r epor t s a r e included as Appendix E to this r epor t . No elevated levels of radioact ivi ty which were a t t r ibutable to Pro jec t Rio Blanco were observed in this environmental monitoring p r o g r a m .

During the f i r s t production test ing, the routine radiological monitoring p r o g r a m was augmented in the a r e a s of water , a i r par t icu la te , and a i r moi s tu re s a m ­pling. Some additional effort was expended in sampling soi ls , vegetation and ini lk-cow feed, in b ioassays , in external background m e a s u r e m e n t s and oppor­tune precipi ta t ion sampling.

During the second production testing and because of the favorable r e su l t s obtained during the f i r s t production tes t , augmentation of the routine p r o g r a m was l imited p r ima r i l y to water sampling at nearby locations and to p rec ip i ta ­tion and snow sampling near the f lare stack. Some additional effort was expended on a i r mo i s tu re sampling, b ioassays , and external radiat ion m e a s u r e ­ment s in the immedia te si te vicinity.

The resu l t s of the augmented radiological p r o g r a m s were general ly consis tent with background observa t ions . The only data obtained showing above back­ground were for ^H in some soil and precipi ta t ion sampling near the f lare s tack and in some si te a i r moi s tu re s a m p l e s . The flare stack a r ea sampling r e su l t s ranged from not detectable (<2pCi H per ml liquid) to 102.3 pC i /ml . The si te a i r mo i s tu r e sampling re su l t s ranged from not detectable to 16.4 p C i / m l . These p r o g r a m s a r e repor ted in g rea t e r detail in Reference 6.

The paucity of posit ive data in the environmental radiological monitoring p r o ­g r a m s prec ludes meaningful calculat ion of dose to pe r sons in the environment and confirms the predict ions of the environmental s t a t emen t ' " ' that the dose

90 would be so low as to be unmeasurab le . The ^ Sr data and gamma scan of a i r pa r t i cu la te , water , and vegetation confirm that no measu rab l e quanti t ies of long-l ived par t icu la te f ission products were added to the environment . The TLD data a r e in the same range as those previously repor ted in the r epor t s collectively identified as Reference 8. It is concluded that the environmental impact of the r e l e a s e s of radioactivi ty to the a tmosphere in the flaring of gas from the RB-E-01 well is not measu rab l e above the sensi t iv i t ies s tated in References 6 and 8. Therefore , it is es t imated that the potential radiat ion dose equivalents , consider ing the sensi t iv i t ies of the analytical p rocedu re s , w e r e a very smal l fraction of the Radiation Pro tec t ion Standards of AEC Manual Chapter 0524.

- 49 -

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APPENDIX A DAILY DRILLING REPORTS

RB-E-01

1973

September 22 - Rigging and tes t ing. Rig personnel available on September 21 , 1973: one d r i l l e r and two men. Unable to s t a r t on 12 hr shifts. Lost two men each on trwo c r e w s . Total available now : tAvo d r i l l e r s and four men. Changed out l iner on mud pump to 5-inch. Dri l led r a t hole. KB 22 ft above ground level . All depths KB,

September 23 - Picked up 3-1 /2- inch dr i l l pipe. Tes ted mud sys t em to 2000 psig. Tested okay. Held operat ions meeting -with dril l ing c r ews . Ran Servco 6-1/8- inch Economil l , 5-inch Dynadri l l , two Gray inside B O P ' s , one 5-inch dr i l l col lar , Otis dr i l l pipe plug nipple (Type "Q") , five additional 5-inch dr i l l co l l a r s , and Otis d r i l l pipe plug nipple (Type "N") . Ran in hole in 3 - 1 / 2 -inch I. F , d r i l l pipe to 2500 ft KB. Circulated and set dri l l ing in s t rumen t s . Closed pipe r a m s on 3-1 /2- inch dr i l l pipe. Left well shut in overnight. Have two d r i l l e r s and five men,

September 24 - Dril l ing cement at 35 30 ft KB. 6-1 /8- inch hole. (Prog. 733 ft) Ran mi l l to 2797 ft and tagged top of cement. Dri l led cement f rom 2797 ft to 3530 ft KB. Circulated hole clean. Pulled two s tands . Closed in well . SDON. Crew remaining: two d r i l l e r s and six men. Bit #1 - Servco Economill - 2797 ft to 3530 ft - 733 ft in 9 h r s . Six 5-inch dr i l l co l l a r s ; WOB 6000 lb; 250-300 RPM with Dynadril l ; dr i l l pipe tool j t s , : 3 -1 /2- inch I. F . ; d r i l l col lar tool j t s , : 3 -1 /2- inch I. F , ; 5-inch pump; 50 SPM; 250-300 GPM; P P 800-1000 lb. Drill ing with water . Operating 12 h r s . /day.

September 25 - Dril l ing cement at 4365 ft, (Prog, 835 ft) 6 -1 /8- inch bit. Dri l led cement f rom 35 30 ft KB to 4365 ft KB, Circulated hole 30 min. Pxilled two stands d r i l l pipe. Closed in well . SDON, Crew s ta tus : two d r i l l e r s and eight men. Bit #1 - Servco Economil l - 2797 ft to 4365 ft - 1568 ft in 19 h r s . Six 5-inch dr i l l co l l a r s ; WOB 6000 lb; 250-300 RPM; dr i l l pipe tool j t s . : 3- 1/2-inch I. F . ; dr i l l collar tool j t s , : 3- 1/2-inch I, F , ; 5 -inch pump; 50 SPM; 250-300 GPM; P P 800-1000 lb. Dril l ing with water . Operating 12 hra /day.

September 26 - Test ing BOP's and mixing mud. Depth 4700 ft KB, (Prog, 335 ft) 6-1 /8- inch hole. Dril led cement from 4365 ft to 4700 ft KB. Circu­lated well 30 minutes . Displaced water with mud. Pulled out of hole. Laid down Dynadril l #1 and mi l l . Dumped water from circulat ing p i t s . Started cleaning pi ts and test ing BOP stack. SDON. Crew: two d r i l l e r s and eight men. Bit #1 - Servco Economill - 2797 ft to 4700 ft - 1903 ft in 24 h r s . Six 5-inch dr i l l co l l a r s ; WOB 6000 lb; 250-300 RPM; dr i l l pipe tool j t s , -3-1 /2- inch I. F , ; dr i l l collar tool j t s , - 3-1 /2- inch I, F . ; 5-inch pump; 50 SPM; 250-300 GPM: P P 800-1000 lb. Drilling with wa te r . Operating 12 hrs . /day.

- 5 1 -

S e p t e m b e r 27 - D r i l l i n g c e m e n t at 4762 ft. ( P r o g . 73 ft) 6 - 1 / 8 - i n c h h o l e . F i n i s h e d p r e s s u r e t e s t i n g B O P to 3000 p s i . O p e r a t e d D , W , C . and Ot i s e q u i p ­m e n t . Checked okay . Mixed m u d . S t r a p p e d in to 4691 ft. C o r r e c t e d G e o l o -g r a p h to 4691 ft. Have 3 d r i l l e r s and 12 m e n . S t a r t e d 24 h r . o p e r a t i o n S e p t e m b e r 27, 1973. No r a d i a t i o n or g a s d e t e c t e d to d a t e . Bi t #2 - S e r v c o -4691 ft to 4762 ft. Six 5 - inch d r i l l c o l l a r s ; WOB 6000 l b ; 250 -300 R P M ; d r i l l p ipe tool j t s . - 3 - 1 / 2 - i n c h I, F , ; d r i l l c o l l a r tool j t s . - 3 - 1 / 2 - i n c h I. F . ; 5 - inch p u m p ; 50 SPM; 250-300 G P M ; P P 800-1000 lb . BHA: S e r v c o m i l l , 5 - inch D y n a d r i l l , 1 G r a y i n s ide B O P , 5 - inch d r i l l c o l l a r , 1 G r a y B O P , Ot is " Q " n i p p l e . F i v e 5 - inch d r i l l c o l l a r s , and 1 Ot i s n i p p l e . Dr i l l i ng wi th low l i m e mud - Wt. 9. 0 lb ; V i s , 44 , O p e r a t i n g 12 h r s . - day l igh t .

S e p t e m b e r 28 - T r i p p i n g for t a p e r e d m i l l . ( P r o g . 723 ft) Depth 5485 ft -c e m e n t and c a s i n g . 6 - 1 / 8 - i n c h ho le . O p e r a t i n g 24 h r s . D r i l l e d c e m e n t f r o m 4762 ft to 5194 ft. C i r c u l a t e d out g e l - w a t e r so lu t ion to 5351 ft. Hit i r o n . Mi l led 2 ft and w a s h e d to 5452 ft. Mi l led i r o n 2 ft. Washed to 5484 ft. Mi l l ing on i r o n . Mi l led to 5485 ft. Coming out of hole for t a p e r e d m i l l . Wil l l ay down D y n a d r i l l . No r a d i a t i o n o r g a s s h o w s . Bit #2 - S e r v c o - 4691 ft to 5485 ft. Six 5 - inch d r i l l c o l l a r s ; WOB 6000 lb; 250-300 R P M ; 3 - 1 / 2 -inch I. F . d r i l l p ipe too l j t s , ; 3 - 1 / 2 - i n c h I. F . d r i l l c o l l a r too l j t s . ; 5 - i nch p u m p ; 50 S P M ; 250-300 G P M ; P P 800-1000 lb ; BHA: S e r v c o m i l l , 5 - inch D y n a d r i l l , 1 G r a y i n s i d e B O P , 5 - inch d r i l l c o l l a r , I G r a y B O P , Ot i s " Q " n i p p l e , five 5 - inch d r i l l c o l l a r s , and I Ot i s n i p p l e . Low l i m e mud - Wt. 8. 6 lb ; V i s . 40; WL 6 cc ; F C 2 / 3 2 ; pH 12; PV 52; Yp 32,

S e p t e m b e r 29 - T r i p for m i l l #5 . Depth 5508 ft - c e m e n t and i r o n . ( P r o g . 2 3 ft) 6 - 1 / 8 - i n c h h o l e . M i l l #4 m i l l e d on i r o n 5494 -5498 ft. W a s h e d dovim to 5506 ft and m i l l e d on i r o n 5506-08 ft. P u l l e d out of h o l e . Shows w e a r a r o u n d ou t s i de and a r o u n d c e n t e r of m i l l . Mil l #3 shows w e a r a r o u n d s h o u l d e r s of 6 - 1 / 8 - i n c h O. D. s ec t i on and e x t r e m e w e a r on b o t t o m . All c e n t e r cut is gone o v e r an O. D. of a p p r o x i m a t e l y 2 - 1 / 2 - i n c h . W a t e r c o u r s e out b o t t o m w a s n e a r l y s e a l e d off.

S e p t e m b e r 30 - T r i p in wi th m i l l #6 . Depth 5549 ft - m e t a l . ( P r o g . 41 ft) 6 - 1 / 8 - i n c h ho le . Low l i m e mud - Wt. 9 . 0 lb .

O c t o b e r I - R e a m i n g t igh t spo t in c a s i n g . Depth 5554 ft - f o r m a t i o n - m e t a l . ( P r o g . 5 ft) 6 - 1 / 8 - i n c h h o l e . R e a m e d with m i l l #6 back to b o t t o m . A p p a r e n t l y went ou t s ide of 1 0 - 3 / 4 - i n c h cas ing at 5551 ft. S t a r t e d ge t t ing s o m e sha le back to s u r f a c e . Made t r i p for m i l l #7. Went in ho le . Found t ight spot 55 06-5510 ft. R e a m e d t h r o u g h t igh t spo t s e v e r a l t i m e s . S t i l l pu l led t igh t . P u l l e d 140, 000 lb to get l o o s e . Worked t h r o u g h spot and went to 5522 ft. Mi l led for 2 h r s . Made 1 ft. Pu l l ed out of h o l e . Ran t a p e r e d m i l l and s t a r t e d r e a m i n g up hole at 5350 ft. Went t h rough t igh t spot once . R e a m e d back aga in . A p p a r ­en t ly wen t off o the r s i d e . Could not m a k e any h o l e . P i c k e d up and r e a m e d t h r o u g h t igh t spot . Okay. Went to 545 0 ft and r e a m e d t h r o u g h t i gh t spo t . Went to 5486 ft. While r e a m i n g , got s tuck . P u l l e d f r ee with 175, 000 lb .

- 5 2 -

No radiat ion or gas to surface . Six 5-inch dr i l l co l l a r s ; WOB 4000 - 8000 lb 40-70 RPM; 5-inch pump; BHA: mi l l . Baker float, 1 dr i l l co l la r . Gray inside BOP, Otis plug nipple Type "Q" , five 5-inch dr i l l co l l a r s , Otis plug nipple Type "N". Low l ime mud - Wt, 9, 0 lb; Vis, 38.

October 2 - Logging with Schlumberger , Depth 5554 ft. (Prog, 0 ft) Circu­lated hole at 5430 ft for 1 h r . Pulled out of hole. Inspected dr i l l co l la rs and sub. Found cracked pin on Baker float sub. Laid down sub. Ran BaJcer 7-inch casing s c r ape r to 5360 ft KB. Pulled out of hole. Rigged up Schlumber­ger to run Caliper and Collar Locator , P r e p , to set Baker Model "N" bridge plug in in terva l 5 300-5 350 ft and set whipstock for a l te rna te r een t ry plan. Mill #8 - Acme tapered - reaming . Six 5-inch dr i l l co l l a r s ; 5-inch pump; BHA: same as October 1, 1973, Low l ime mud - Wt, 9,0 lb; Vis, 40,

October 3 - Picking up whipstock. PBTD 5 322 ft. Ran Schlximberger Casing Caliper and Collar Locator Log f rom 5400 ft to 2500 ft KB, Set Baker Model "N" dr i l lable bridge plug on wire l ine at 5322 ft KB. Tested plug and casing below blind r a m s to 1000 psi surface p r e s s u r e . Tested BOP units to 3000 ps i . Held okay. Ran 6-1 /4- inch 0 , D . window mil l to 5322 ft KB, Pulled out of hole . P r e p , to pick up Bowen whipstock.

October 4 - PBTD 5 322 ft, 6 -1 /4- inch hole. Oriented S 10° W. 4° taper on whipstock. Top of tapered port ion 5303 ft KB. Mill #9 - milled 5304-5307 ft in 7 h r s . Mill #10 milled 5307-5 309 ft in 8 h r s . Six 5-inch dr i l l co l l a r s ; WOB 4 ,000-8 ,000 lb; 40 RPM; 5-inch pump; BHA: mi l l , 1 dr i l l co l la r , Otis "Q" plug nipple, 5 dr i l l co l l a r s , and Otis Type "N" plug nipple Low l ime mud - Wt, 9. 0 lb; Vis, 40.

October 5 - T r ip into hole with Bit #13, PBTD 5316 ft. On Bit #11, got to formation. Pulled and ran bit #12 with 3-pt, ro l le r r e a m e r to d r e s s window. Could not make hole in formation. Ran Reed 6-1 /8- inch bit with 3-pt. ro l l e r r e a m e r . Plan to make 50 ft to 100 ft, run survey, pull out of hole and lay down 3-pt. r e a m e r before dri l l ing ahead. Bit #10 - 6-1 /4- inch finishing mi l l - 5307-5312 ft in 10 h r s . Bit #11 - 6-1 /4- inch finishing mil l - 5312-5316 ft - 6 -1 /2 h r s . Bit #12 - 6-1 /4- inch finishing mi l l - 5316 ft - no p r o g r e s s -1-1/4 h r s . Bit #13 in hole. Six 5-inch d r i l l co l l a r s ; 5-inch pump; BHA: 6-1 /8- inch bit, 3-pt, ro l l e r r e a m e r . Gray inside BOP, one 5-inch dr i l l co l la r , Otis plug nipple Type "Q" , five 5-inch dr i l l co l l a r s , and Otis plug nipple Type "N". Low l ime mud - WT, 8. 8 lb; Vis . 40.

October 6 - Drill ing shale at 5356 ft. 6 -1 /8- inch hole. Bit #13 - Reed Y31R -0 ft in 2 h r s . Bit #14 - flat bottom - 6-1 /4- inch - 5316-5329 ft - 13 ft in 7 h r s . Bit #15 - Reed Y31R- in hole. Bit #14 was bald when pulled out of hole - badly out of gauge, Dev, : 3° at 5328 ft.

October 7 - T r ip for Bit #17. Depth 5429 ft - sand and shale . Made 73 ft, 6 -1 /8- inch hole. Bit #15 - Reed Y31R - 5329 ft to 5371 ft. Bit #16 - HTC

- 5 3 -

OWC-J - 5371 ft to 5429 ft, Dev . : 2 - 3 / 4 ° at 5361 ft; 2 -1 /20 at 5419 ft,

October 8 - Dril l ing sand and shale at 5580 ft in s idetracked hole. Made 151 ft. Bit #17 - Williams dia. - in hole. Six 5-inch dr i l l co l l a r s ; WOB 8,000-12,000 lb; 300 RPM; 5-inch pump; BHA: dia. bit , Dynadri l l , change-over sub, float sub. Gray inside BOP, one 5-inch dr i l l co l la r . Gray inside BOP. Otis "Q" nipple, five 5-inch dr i l l c o l l a r s , Otis "N" nipple and 3-1 /2- inch dr i l l pipe. No gas or radiation to surface. Low lime mud - Wt, 8, 9 lb. Vis, 48,

October 9 - Mixing mud. Depth 5614 ft, 6 -1 /8- inch hole. Made 34 ft. Dev. : 2° at 5510 ft. Tripped at 55 85 ft to change out Dynadri l l . Dri l led ahead with 6-1 /8- inch bit and new Dynadril l , Lost par t i a l r e tu rns at 5597 ft. Dri l led to 5602 ft. Healed up lost circulat ion zone. Pumped in mud at ra te of 10 BPM w ith no r e t u r n s . Pumped down annulus and dr i l l p ipe. Could not get r e t u r n s . Lost 400 bbls . mud. Pulled 4 stands to get Dynadril l inside 7-inch casing. Pumped 200 bbls. additional wate r . No r e t u r n s . No gas to surface after 6 h r s . No radioactivi ty to surface. Bit #17 - Will iams - dia, - 5429-5614 ft - 185 ft in 26 h r s , 5-inch pump. Low l ime mud - Wt, 8, 9 lb, (Appears that lost c irculat ion zone is caused from roof sag above chimney without communication with chimney. Intend to mix viscous mud, pull Dyna­dr i l l , run conventional bit and dr i l l ahead without r e t u r n s , if neces sa ry , )

October 10 - Drilling sand and shale at 5620 ft. Dril led 6 ft, r eamed 280 ft, 6-1/8- inch hole. Mixed mud. Pulled out of hole and laid down Dynadril l , Ran bit #18, Had problems getting through whipstocked window. Establ ished circulat ion. Cleaned shale br idges in 6-1/8- inch hole from 5 334 ft to 5614 ft. Had to overhaul power swivel. Swivel motor seals went out. Lost 500 bbls , mud while reaming hole from 5 334 ft to 5614 ft and while dri l l ing to 5620 ft. Have Halliburton on location m.ixing mud. Bit #18 - HTC OWV reg , - 5614 ft to 5620 ft. Six 5-inch dr i l l co l l a r s ; WOB 2, 000-6, 000 lb; 50-70 RPM; BHA: bit, bit sub, Baker float sub. Gray inside BOP, one 5-inch d r i l l co l la r . Gray inside BOP, Otis nipple Type "Q" , five 5-inch dr i l l co l l a r s , and Otis nipple. Type "N", Gel -Chem - Wt. 9,0 lb; Vis, 65-75; WL 11.2 cc; F C 2 /32 .

October 11 - Drilling shale at 5620 ft (correc ted) . Made 8 ft. 6 -1 /8- inch hole. Pulled out of hole. Laid down power swivel. Not enough power to dr i l l . Laid down rotating head. Installed Hydril , Tested BOP ' s , Strapped pipe out and in. Correc ted depth 5620 ft KB at 8 a . m . October 11, 1973. Drilling ahead with par t ia l circulat ion, Halliburton mixing mud. Lost approx imately 250 bbls , mud in las t 24 h r s . Using LCM to par t ia l ly heal lost c i r cu ­lation zone. No gas or radioactivi ty to surface. Bit #18 - HTC OWV - 5601-5612 ft - 11 ft in 12 h r s . - dr lg . and rmg . - slightly out-of-gauge. Bit #19 in hole. 5-inch pump. BHA: bit, bit sub. Baker float sub. Gray inside BOP, one 5-inch dr i l l co l la r . Gray inside BOP, Otis nipple Type "Q" , five 5-inch dr i l l co l l a r s , and Otis nipple. Type "N". Gel-water - Wt, 8,8 lb; Vis, 75,

- 5 4 -

October 12 - Rigging up bottom snubbers . Depth 5706 ft - sand and shale . Made 86 ft, 6 -1 /8- inch hole. Dri l led f rom 5620 to 5633 ft with pa r t i a l lost c i rcula t ion. Ran out of mud. Pulled 5 stands to mix m o r e mud and obtain m o r e wa te r . Ran back to bottom. Dri l led to 5706 ft KB with no r e t u r n s . Ran out of mud. Lost 4000 bbls , mud while dri l l ing from 5620 ft to 5706 ft. Pulled 10 stands into de r r i ck . Ran 90 j t s . 3 -1 /2- inch d r i l l pipe. Started rigging up bottom snubbers .

Note: Had p r e s s u r e buildup of gas to surface while mixing mud at 5671 ft. P r e s s u r e up to 320 ps i . Sample of gas indicated Krypton-85 and Tritiunn, Piimped 150 bb ls , mud do^vn annulus to kill well . Bled remaining gas to f lare stack through D, W, C. Bit #19 - HTC OWV - 5612-5706 ft - 94 ft in 8 h r s . Still in hole. Six 5-inch d r i l l co l l a r s ; WOB 2, 000-8,000 lb; 50-90 RPM; BHA: bit, bit sub. Baker float sub. Gray inside BOP, one 5-inch d r i l l co l la r . Gray inside BOP, Otis nipple Type "Q", five 5-inch dr i l l co l l a r s , and Otis nipple. Type "N". Gel-water - Wt, 8,8 lb; Vis. 75,

October 13 - Running in with wirel ine to se t packer . Finished rigging up snubbing equipment. Came out of hole laying down 3-1 /2- inch dr i l l pipe. Laid down all 3-1 /2- inch dr i l l pipe. Stood back 6 dr i l l co l l a r s . Did not need to snub out of hole, Pvunped in mud at slow ra te while coming out of hole. Shut blind r a m s . Rigged up Birdwell and 7-inch lubr ica tor to run packer and bottom hole assembly . Had 750 psig gas p r e s s u r e on casing at 8:00 a . m . No rad io­activity contamination,

October 14 - Rigging up to pull Otis plugs. Depth of packer 5260 ft KB, Pumped in 300 bbls , f resh water down the casing, 0 lb at surface . Equalized above and below blind r a m s . Opened r a m s . Ran packer in hole on wire l ine . Set packer at 5260 ft KB. Bottom hole assembly from bottom up is bull plug, 8-inch sc reen jt . , Otis "N" plug with 2-inch SN plug instal led, 2 ft 2 -3 /8- inch tubing nipple, ta i l pipe adapter , Otis P e r m a t r i e v e PW wirel ine set packer . Rigged down Birdwell . Fi l led hole with wa te r . Packer held okay. Laid down six 5-inch dr i l l co l l a r s . Changed bottom 3-1/2- inch and 5-inch BOP r a m s to 2 -7 /8 - inch rubing r a m s . Ran 168 j t s . 2 -7 /8- inch EUE tubing and one 4 ft sub to the tubing hanger ^vith Otis equipxnent on bottom of the tubing as follows: Mule shoe guide, " J " la tch assembly without locking bar , "N" nipple with 2 -1 /2 - inch PXN plugs instal led, and tubing cen t r a l i ze r . Landed tubing at 5229 ft KB. OCT hanger locked into wellhead. Landing nipple to hanger nnade up to 700 ft, - lb torque . Remainder of s t r ing made up to 1300 ft, - lb torque . Used 2-7 /8- inch tubing nipples from hanger to rig floor. Installed 2-7 /8- inch full bore tubing valve. P r e s s u r e tes ted valve to 3000 psi before instal lat ion. P r e s s u r e tes ted between tubing hanger and BOP 2-7 /8- inch tubing r a m s to 3000 lb. Held okay. Started rigging up Otis equipment to pull plugs.

-55-

October 15 - Well SI. Building up p r e s s u r e . Rigged up Otis equipment to pull tubing plugs. Surface wirel ine equipment broke down. Called out Wireline t ruck. Pulled Otis PXN plug from bottom of tubing. Attempted to pull Otis SN plug from packer . Sheared off of plug twice. Put 250 psig Nitrogen p r e s s u r e on annulus and unloaded water up the tubing. Bled off Nitrogen p r e s s u r e . Ran re t r ieving tools with Wireline hydraulic j a r s . Pulled SN plug from packer at 10:30 p, m, October 14, 1973, No radiation on tools or plug. Surface CP at 6 a, nn. October 15, 1973 was 300 psig,

October 16 - Well shut in. P r e s s u r e at 8 a . m . October 16, 1973 400 psig,

October 17 - P repar ing to kill well and pull tubing. P r e s s u r e d annulus with N2 with 2700 psig from 400 psig. Started at 1000 cu, ft. /min . , increased to 2000 cu. ft. /min . P r e s s u r e increased to 2500 psig in 30 min. Decreased ra te gradually to 1000 cu. ft. /min . P r e s s u r e increased to 2700 ps ig . Es t imated water displaced through screen on packer at 50 bbls . Shut down N2 injection. Flowed well to flare stack through D. W. C. unit. Well loaded up and died twice. Injected additional N2 into annulus to clean water out of hole. Rec. 100 BW to storage tank. At end of clean up, well was flowing 510 MCF/D at an apparent stabilized CP of 500 psig with 200 psig on the D. W. C. unit. Radiation level at stabilized ra te was approximately 400 pCi /cc of Krypton 85, Radiation level of produced water was background. Total N2 injection was 170, 000 cu, ft. Total flow back 135,000 cu, ft. Well was SI 7:15 p . m . October 16, 1973. P r e s s u r e at 7:15 p . m . October 16, 1973 was 500 psig. P r e s s u r e at 10 p, m. October 16, 1973 was 1075 psig; p r e s s u r e at 7 a, m, October 17, 1973 was 1650 psig. Prepar ing to blow well down, kill with mud, and pull packer ,

October 18 - Pulling tubing and packer from well . Blew well down to flare stack through D, W, C. unit, CP at s t a r t of blow down 1650 ps ig . Went down to 450 ps ig . Killed well with mud. Screen joint appeared to be par t ia l ly plugged. Well would p r e s s u r e up while trying to pump down hole, Pvmnped water do>vn tubing to wash contamination out of tubing. Ran in with wirel ine tools to position packer re t r ieving s leeve. Made severa l t r ips to position s leeve . Latched onto packer with tubing. Released packer . Could not pump past packer down the annulus. While pulling packer , s tar ted swabbing the hole. Pumping down tubing out the bottom of the packer around the outside of the sc reen joint every 15 stands to keep well killed. Plan to pick up bit, clean out hole, and dr i l l a few feet deeper .

October 19 -Drill ing and washing back to bottom. Depth 5633 ft, 6 -1 /8- inch hole. Pulled packer and screen jt, out of hole. Screen jt. plugged with fine cutt ings. Decontaminated packer and sent in for r ed res s ing . Screen jt, will have to remain on location until decontaminated. Tripped into hole w ith 6 -1 /8 -inch bit to clean out and dr i l l ahead. Hit bridges from 5560 ft KB down. P r e sen t depth 5633 ft. TD of hole 5706 ft. Lost re tu rns at 5565 ft KB, Gain­ed par t ia l r e tu rns at 5575 ft. Lost total of 750 bbls . in the las t 24 h r s . Circu­lating sys tem is contaminated. Radioactivity level 44 p C i / m l . Bit #20 - HTC OWV - dril led and washed - 6 h r s . - st i l l in hole. Six 5-inch dr i l l co l l a r s ;

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5-inch pump; BHA: bit, bit sub. Baker float sub. Gray inside BOP, one 5-inch dr i l l co l la r . Gray inside BOP, Otis "Q" nipple, 5 dr i l l co l l a r s , and Otis "N'' nipple. Gel-water - Wt. 8.8 lb; Vis . 45.

October 20 - Laying down 3-1/2- inch dr i l l pipe, PBTD 5634 ft. Washed to bottom at 5706 ft. Dri l led to 5745 ft. No ci rcula t ion. Had seve ra l good d r i l l ­ing b r e a k s . Pulled out of hole. Strapped out at 5745 ft KB. Ran 16 j t s . 5-inch O. D. , 15 lb, JCS hydri l flush jt with Brown Type "V" shoe and 2 valve float co l la rs jus t above shoe. Ran Brown "Hyflo" H, D. 5-inch, 18 lb hanger packer on top of l iner , I ,D, of hanger 4-9 /32- inch , I ,D . of l iner 4 -3 /8 - inch , Length of l iner shoe, float collar and hanger 507 ft, "Baker -Lok 'd" all j t s , Bottonn of l iner 5735 ft KB and tagged fill. Set l iner with bottom at 5 734 ft KB. Top of hanger 5227 ft KB. Starting out of hole, laying down dr i l l pipe. Liner is overlapped 76 ft into 7-inch casing. Bit #20 - HTC OWV reg . Washed at 5706 ft. Dri l led f rom 5706 ft to 5745 ft - 39 ft in 2 h r s , BHA: same as Octo­ber 19, 1973, Gel -water - Wt. 8,9 lb; Vis . 60-70.

October 21 - Waiting on Birdwell . Finished laying down 3-1 /2- inch dr i l l pipe and 5-inch dr i l l co l l a r s . Ran 167 j t s . 2 -7 /8 - inch tubing. Tubing s t r ing from bottom up: mule shoe, 4 ft pup with cen t r a l i ze r , Otis "XN" nipple, 167 j ts 2 -7 /8 - inch tubing, 4 ft pup, and tubing hanger . Bottom of tubing at 5200 ft KB. Waiting on Birdwell ,

October 22 - Logging, Birdwell at tempted to run GR survey. Tool quit work­ing after getting to bottonn, Canne out of hole. Ran Tempera tu re Survey. Tempera tu re went to 270° F . at 55 65 ft, then failed. Pulled t empera tu re tool. Repaired and r e r a n . Maximum tempera tu re on survey 286° F . Appeared to have two peaks : 286 at 5630 ft and 283° at 5665 ft. Called out Schlumberger with high t e m p e r a t u r e line tennperature survey tool and GRN tool. Schlumberger t empera tu re survey indicated single peak - nnuch broader with peak of 265° F , at 5675 ft. It appears that fluid may st i l l be moving down hole. Pumped in 50 BW. Running Tempera tu re Survey to de termine hot spots . Will continue survey until hot spots a r e stabil ized. Cleaned out mud tanks and filled with wate r .

October 23 - Rigging up Halliburton and hauling water . Completed running t empe ra tu r e su rveys . Hot a r e a s indicated between 5 632 ft KB and bottom of l iner at 5734 ft KB, Gamma Ray Neutron Log did not show definition of chim­ney or f ractured region. Plan to perfora te using through-tubing j e t s . Bi rd-well perforated with s t r ip gun #1 from 5 727 ft to 5702 ft KB with one 1-11/16-inch je t / f t . Total of 25 shots . Pumped 50 BW down annulus. Started in hole with s t r ip gun #2 to per fora te 5702-5677 ft KB. Unable to get below l iner top. Started out of hole to check s t r ip gun. Well s ta r ted blowing in through cable head pack-off. Could not completely shut off stuffing box control head. Pulled gun into lubr ica tor . Shut tubing m a s t e r valve. Released Bird>vell t ruck >vith 5/16-inch l ine. Ordered out unit with 3/16-inch line and a g r e a s e injection control head to finish perforat ing. Started rigging up Halliburton to pump down tubing while perfora t ing.

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October 24 - Perforat ing with Birdwell . Changed out tubing floor va lves . Have two new floor valves on tubing. Keeping well killed by pumping water down annulus and tubing periodical ly. Rigging up Bird^vell perforat ing t ruck >vith g rease injection sys tem and 3/16-inch l ine. Per fora ted l iner 5702-5677 ft KB with 2 JSPF using l - l l / l 6 - i n c h ce ramic j e t s . Prepar ing to run in and per for ­ate 5677-5652 ft KB.

October 25 - Well shut in to build up p r e s s u r e . Perfora ted l iner from 5677 ft to 5652 ft KB with 2 JSPF using l - l l / l 6 - i n c h ce ramic j e t s . Perfora ted 5652-5627 ft KB with 1 JSPF . Rigged down Birdwell . Finished perforating at 12:15 p . m . October 24, 1973. Casing p r e s s u r e as follows:

Time CP

10/24/73

I; 2; 3; 5; 7; 9;

11: 12

;15 :15 ;00 ;00 ;00 ;00 :00 m i

P-p . P-P-P-P-p . dn

m . m . m . m. m . m . m . ight

10/25/73

2: 4; 6; 7;

;00 ;00 ;00 ;30

a. a. a. a.

m . m . m . m..

125 260 385 700 960

1250 1450 1525

1510 1525 1510 1525

Plan to flow well this a. m,

October 26 - Waiting on O. C. T. r epresen ta t ive . Flowed well through D, W. C. unit for 1 h r , 45 min. Initial CP 1525 psig, final CP l600 psig. Initial ra te 5110 MCF/D. Final ra te 5816 MCF/D. Avg. ra te 5480 MCF/D. Initial specific gravity 1.084, final specific gravity 1. 127. All free liquids produced stored in 400-bbl. tank. Total contaminated liquids produced 47 bbls . Stored in 400-bbl, tank for injection l a t e r . Cumulative gas produced 399 MCF, H2S in gas monitored at 300 ppm. Shut down flow after 1 hr , 45 min. Pumped 30,000 SCF N2 down tubing. Pumped 150,000 SCF N2 down annulus. Rigged up Otis and ran Otis "XN" plug in nipple at 5196 ft KB. Bled T P to 900 ps ig . CP 1700 psig. Plug held okay. Ran Otis "DB ' collar latch plug to 212 ft KB and set . Bled off p r e s s u r e inside of tubing above plug to 0 ps ig . Held okay. Attempted to bleed off p r e s s u r e above tubing hanger and lower set of 2 - 7 / 8 -inch pipe r a m s . Would not bleed off. Called out O. C. T. r ep resen ta t ive . To a r r i ve on location at 9 a. m. Suspect hanger compress ion ring problem.

-58-

October 27 - Rigging down ren ta l equipment. P r e s s u r e d between tubing hanger and pipe r a m s on BOP severa l t imes to 3000 ps i . Bled back. Finally got hange seal to hold. Checked tubing plugs . Holding okay. Opened pipe r a m s and Hydri l . Backed out tubing from top of hanger . Closed blind r a m s . Removed all BOP's except bl inds. Found p r e s s u r e between blinds and tubing hanger . Bled off. Found smal l leak around outside of hanger f rom the annulus. Re ­moved blinds. Installed nnaster valve and tubing head bonnet flange. P r e s s u r e tes ted valve to bonnet connection to 5000 ps i . Held okay. Unable to p r e s s u r e tes t in ternal sealing connection f rom bonnet to valve because of smal l leak around hanger . No external leaks detected. Started rigging down lines to BOP controls and Otis equipment. P repar ing to decontaminate D, W, C, unit,

October 28 - Decontaminating equipment. Decontaminated al l renta l equip­ment except for D. W.C. unit. Having to s t eam out inside of unit using rig boi ler .

October 29 - Waiting on t rucks to move out r ig . Finished decontamination of D . W . C . unit. Released rig at 3 p, m . October 28, 1973. Trucks to t ea r down and nnove out rig expected on Novennber 1, 1973.

October 30 - Waiting on t rucks for rig move-out , Otis equipment moved out and al l other renta l equipment except D. W. C. moved off s i te . D. W. C. wait­ing on t r u c k s .

October 31 - Waiting on t rucks to move out D , W , C . unit. Trucks for rig expected on Novennber 1, 1973. Surface CP on well at 1 p . m . October 30, 1973 - 1740 ps ig .

November 1 - Waiting on t rucks to rig down. Moved out D . W . C . unit.

November 2 - Tear ing down and nnoving rig off location.

November 3 through November 6 - Moving off r ig .

November 7 - Finished tear ing down and moving off location.

- 5 9 -

• 6 0 -

APPENDIX B DAILY DRILLING REPORTS

FAWN CREEK GOVERNMENT #1 WELL REENTRY AND RECOMPLETION - June 18 - September 17, 1973

AND REMEDIAL WORK - November 23 - December 5, 1974

1973

June 18 - Moved in Colorado Well Service , Inc, workover rig - rigging up.

June 19 - Rigging up - set water tank and circulat ing equipment - instal led Hydril , double gate BOP - Tested - Ran Hughes Tool Co. 4 -3 /4 - inch bit with four 3-1 /8- inch D, C, and 135 joints 2 -3 /8 - inch EUE tubing - tagged top of soft cennent at 4364 ft KB, Shut in overnight.

June 20 - Mixed 10 sacks of KCl with 135 b a r r e l s of wa te r . Rigged up to d r i l l . Dril led cement from 4364 ft to 4569 ft KB. Mud pump went down, lost two hours , 4:00 p . m . to 6:00 p . m . Shut down overnight.

June 21 - Dri l led cement with 2% KCl water from 4569-4845 ft KB. Bit #1 cum. 14 rotating hours and 481 ft - weight on bit 6000# at 70 RPM, punnp p r e s s 450, r e v e r s e c i rcula t ion. Hart Gleason, LLL, on location.

June 22 - Dril led cement with 2% KCl water from 4845-5062 ft KB. Bit #1 cum, 21 h r s rotating at 698 ft, Wt on bit 6000#, 80 RPM, pump p r e s s 300 psig, r e v e r s e c i rculat ion. Har t Gleason, LLL, on location. Changed s t r ipper head rubber in a . m . and p . m .

June 23 - Dril led cement with 2% KCl water from 5062-5247 ft KB. Bit #1 cum. 26-1 /2 h r s rotating at 883 ft. Wt on bit 6000#, 80 RPM, pump p r e s s 300 psig - r e v e r s e c i rcula t ing. Laid down power swivel - removed s t r ippe head. Cleaned cement from flat tank. Started out of hole with s tr ing to change bit, e levator latch broke with one-haK s t r ing out. Shut down over­night for elevator r epa i r . Har t Gleason, LLL, and John Glock, EIC, on location.

June 24 - Fil led flat tank with water and added KCl to 2% concentrat ion. Repaired e leva to r s . Pulled out of hole with Bit #1 , Good condition. Some bearing wear . Bit #1 checked for radiat ion, tested OK, Picked up Bit #2 HTC 4-3 /4 - inch WO #TD047, Went in hole with Bit #2 and four 3-1 /8- inch dr i l l co l l a r s on bottonn and broke circulat ion at 12:30 h r s - dril l ing at 12:45 h r s . Dril led 26 ft of cennent to 5273 ft KB and se rv ice unit motor fuel injec tion pump broke . Shut down overnight waiting on r e p a i r s . Har t Gleason, LLL, and John Glock, EIC, on location.

- 6 1 -

June 25 - Down for rig engine r e p a i r s from 8:00 a . m . to 11:00 a . m . Drilled cement with 2% KCl water fronn 5273-5435 ft KB. Circula ted hole clean. Shut down overnight,

June 26 - Drilled cement fronn 5435-5524 ft KB. Bit stopped dri l l ing -appears to be on junk or nnetal. Circulated out very fine nnetal shavings. Have recovered no sand in cuttings. Pulled out of hole. Strap out at 5524 ft KB, Outside 3/8- inch of 4 -3 /4 - inch bit appears to have been dri l l ing on nnetal - Shut down overnight.

June 27 - Picked up Acme taper mi l l 4-13/16- inch OD Bowen hydraulic j a r s and t r ip in hole. Tagged probable collapsed casing at 5524 ft. Rig up d r i l l ­ing equipment and dr i l l 18 inches with mi l l . Ext remely hard re tu rns con­tained excessive fine shavings of steel and good hard cement . Total rotating h r s with nnill - 3-1/2 h r s . Tr ip out of hole - mil l was worn out significantly 18 inches from the bottom up. Evidently casing is collapsed ext remely bad. Shut down overnight.

June 28 - Wait on o rde r s fronn 8:00 a . m . to 3:00 p . m . Shut down overnight.

June 29 - T r ip in hole with 4-inch OD Acme tapered mi l l . Circulated down to 5542 ft. Returns contained frac sand and some cement . Power swivel broke down. Pulled three stands of 2 -3 /8- inch tubing. Shut well in and shut down,

June 30-July 4 - Well shut in - Rig shut down (Standby) - Wait on o r d e r s ,

July 5 - P r e s s u r e d 5-1/2- inch casing with water to 575 psig surface p r e s ­su re . Held OK for 10 minutes . Pulled 4-inch mi l l - ran 4 -3 /4 - inch OD Impress ion block to 5525 ft KB. Set down with 10, 000 lbs - pulled out of hole. Impress ion indicates apparent one-half c i rc le of 5-1/2- inch casing looking up. Impress ion is 1/4-inch wide around the outside of the block and has bit tooth m a r k s visible on one end. Bore through problenn a r ea appears to be 4 -1 /2 inches . Shut down overnight,

July 6 - Ran Eas tman casing ro l le r - Calipered 4-13/16- inch OD - Rotated with 1000 ft lbs torque, 1000-1500 lbs wt on ro l le r at 5525 ft KB - Tool torques up - Made 2 inches in 4 -1 /2 h r s - Believe most of 2 inches is nnake up in 2 -3 /8- inch EUE tubing - Started out of hole laying down 2-3 /8- inch tubing - Shut down overnight.

July 7 - Laid down remainder of 2 -3 /8 - inch tubing - Pulled Eas tman casing ro l le r - Seven ro l l e r s lost downhole off of tool - changed out BOP r a m s to 2 -7 /8 inches - Ran 4-inch mi l l on bottom of s tr ing type tapered nnill located 7 ft above 4-inch mi l l - Ran in with j a r s and four 3-1 /8- inch dr i l l co l la r s -picked up 57 joints of 2 -7 /8- inch dri l l pipe with 3-1 /8- inch OD tool joints -shut down overnight - waiting on remainder of 2 -7 /8 - inch dr i l l pipe - plan to fish out lost ro l l e r s after milling through tight spot - shut down overnight.

- 62 -

July 8 - Picked up rennainder of 2 -7 /8 - inch dr i l l pipe - pipe s t r ap in hole to problenn a r e a was 5522 ft KB - Milled through damaged casing with two 3000# wt, 70 to 80 rpm and 1600 ft lbs torque - Ran 4-inch mi l l on bottom to depth of 5539 ft KB. 4 -7 /8 - inch mi l l to depth of 5532 ft KB. Reamed through tight spot seve ra l tinnes - did not drag - c i rcula ted hole clean - s t a r t ed out of hole for nnagnet - Shut down overnight.

July 9 - Strapped 2 -7 /8 - inch dr i l l pipe out of hole - Bottom of 4-inch mi l l 5539 ft KB, depth of 4 -7 /8 - inch mi l l 5532 ft KB - laid down str ing mi l l - Ran 4 -1 /2 - inch OD Magnet with j a r s and 2-7 /8- inch dr i l l pipe - set down on bot­tom at 5539 ft KB - Reverse c i rcula ted to 5545 ft KB - Recovered frac sand - s ta r ted out of hole - shut down overnight.

July 10 - Pulled out of hole with magnet - recovered four of seven ro l l e r s -Ran back in hole with 4 -1 /2 - inch OD magnet - set down at 5545 ft KB -Reverse c i rcula ted to 5550 ft KB - Recovered frac sand - Pul led out of hole -recovered three rennaining ro l l e r s lost fronn casing ro l le r - shut down for night,

July 11 - Ran 4 -3 /4 - inch bit on 2 -7 /8 - inch dr i l l pipe - washed frac sand from 5550-5570 ft KB - P r e s s u r e tes ted 5-1 /2- inch casing using 2% KCl water with 500 psig surface p r e s s u r e for 10 minutes - held OK. Pulled out of hole - laid down j a r s and 4 -3 /4 - inch bit - picked up Baker 4 -1 /2 - inch OD Retrieving Tool for re t r ievable bridge plug - s ta r ted into hole - shut down overnight.

July 12 - Cleaned pits - mixed 100 bbls of 2% KCl water - washed sand from 5570-5580 ft KB - r e l eased br idge plug - well went on vacuunn - pulled and laid down bridge plug - Ran 4 -3 /4 - inch bit to 5500 ft KB. Shut down over­night,

July 13 - Ran 4 -3 /4 - inch bit to 5626 ft KB - Started taking weight - pulled out of hole - s t r ap out at 5628 ft - Laid down 4 -3 /4 - inch bit - Picked up 4-inch OD tapered nnill - J a r s - Ran mi l l to 2500 ft KB. Shut down for night. Note: Per fora t ions a r e from 5600-5630 ft KB.

Casing co l la r s a r e at 5610 ft and 5640 ft KB Cennent Bond Log indicates poor bond at 5628 ft KB Baker Model "D" is at 5653 ft KB Larges t OD on Latch in tool is 3, 750 inches

Plan to at tempt to wash 4-inch OD tool to 5653 ft KB - Not to rotate - if can ' t will pull out of hole and run impress ion block.

July 14 - Ran 4-inch Mill to 5628 ft - would not go through tight spot - Rotated with tubing tongs and c i rcula ted for five minutes - would not go - pulled out of hole - Laid down 4-inch Mill - Mill appeared t o be dri l l ing on nnetal with a bore of about 3-1/2 inches - Ran 4 -3 /4 - inch OD impress ion block - Set down with 12, 000 lbs at 5626 ft - Tight pulling u p - J a r s tr ipped - pulled out of hole to 5000 ft KB - Shut down for night.

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July 15 - Finished pulling of impress ion block - Block indicates casing col­lapsed in from one side - no impress ion on bottom - Picked up Bowen 5-1 /2-inch casing ro l le r - 4-13/16- inch OD - Ran into hole - s t a r ted taking wt at 5620 ft KB - Rotated to 5625 ft - Could not get below 5625 ft - Rotated with 2500 ft lbs torque, 30 RPM, 500 to 1000 lbs wt - Additional wt stops power swivel - worked for three hours - no p r o g r e s s - Pulled four stands - shut in well - shut down overnight - Plan to run 4-13/16- inch str ing mil l with 4-inch tapered mi l l on bottom.

July 16 - Pulled casing ro l le r - ran s t r ing pipe mi l l 4-13/16- inch OD with 4-inch OD tapered mi l l on bottonn - 7 ft below str ing mi l l . Ran in hole to 5622 ft KB - Connected power swivel - swivel pump engine locked up - pulled three stands - shut in for r e p a i r s .

July 17 - Shut down for rig r epa i r s from 8:00 a . m . to 1:00 p . m . Ran three stands of dr i l l pipe in hole. Rig up dril l ing equipment - tagged problenn section at 5630 ft KB. Milled fronn 5630-5632 ft - Kicked power swivel out -slack off - tagged Model D Packer at 5654 ft KB. Pulled three stands of dr i l l pipe - Shut down overnight.

July 18 - Tr ip in with three stands dr i l l pipe - tag Model "D" Packer at 5654 ft KB - pick up two feet and c i rcula te off top of packer 3/4 hr - lay down dri l l pipe and dr i l l co l la rs - change slip segments - s t r ippe r head rubber and pipe r a m s to accommodate 2-1 /16- inch tubing. Pick up Baker Latch-In tool with plug nipple and plug on top of Latch-In tool. Pick up two joints 2-1/16- inch tubing. Shut down overnight,

July 19 - Pan 175 joints 2-1/16- inch IJ tubing - p r e s s u r e tes ted tubing with rig pump to 1200 psig surface p r e s s u r e every 20 joints , all tes t s OK. Tagged packer at 5654 ft KB - Unable to latch into Model "D" . Shut down overnight.

July 20 - Pulled Baker tubing plug with wirel ine equipment - c i rculated to clean out bore of Model "D" - P r e s s u r e up to 1400 psig down tubing when wt is set on Model "D" - Does not latch in - Reverse c i rcula ted out smal l amount of fine meta l shavings - Set down on packer - p r e s s u r e d to 1400 psig (maxi­mum output of rig pump) - Held for 10 minutes - Pulled out of hole - Assembly indicates bottom seals apparently going into bore of packer - however sea ls most ly torn up and some indications of meta l damage around bottonn seal -bottonn of tube on seal assembly shows no damage - unable to de termine why water was not going into perfs below Model "D" at 1400 psig - Flapper valve would have been open and tube through the bottom of the packer with bottom seals seated in the Model "D" - shut down overnight.

July 21 - Ran Baker Model "A" lockset re t r ievable packer on 2-1/16- inch tubing to 5500 ft KB - Unable to get Halliburton or Dowell pump truck for injection tes t - Moved on Colorado Well Service Triplex - unable to s t a r t up pump engine - Down from 10:30 to 2:30 for pump engine repa i r - got engine

-64-

s t a r t e d - s t a r t e d down hole wi th p a c k e r - got to 5628 ft KB - Unab le to ge t any d e e p e r - OD of p a c k e r 4 . 641 i n c h e s - P u l l e d p a c k e r out of ho le - M a r k s on p a c k e r i n d i c a t e s p r o b a b l e c a s i n g c o l l a p s e a g a i n - shut down.

Ju ly 22 - Shut down - no s t andby c h a r g e

Ju ly 23 - Ran 4 - i n c h t a p e r e d m i l l wi th 4 - 7 / 8 - i n c h s t r i n g m i l l s e c t i o n s ix fee t above 4 - i n c h m i l l - p i c k e d up 2 - 3 / 8 - i n c h tubing - t agged Model " D " a t 5654 ft KB - Had no p r o b l e m th rough d a m a g e d s e c t i o n at 5628 ft KB - Ran t h r o u g h 5628 ft i n t e r v a l s e v e r a l t i m e s - P u l l e d out of hole - P l a n to ex tend s t r i n g m i l l s e c t i o n f rom 18 i n c h e s to about 5 ft and r e r u n .

J u l y 24 - Ran s t r i n g m i l l wi th flat s e c t i o n of 50 i n c h e s , 4 - 1 3 / 1 6 - i n c h OD, t a p e r e d e a c h end - r a n wi th h y d r a u l i c j a r s and 2 - 3 / 8 - i n c h E U E tubing - t a g ­ged top p r o b l e m a r e a at 5525 ft KB - would not go t h rough - m i l l e d to 5529. 5 ft in f ive h o u r s - unab le to ge t t h rough s e c t i o n - s t a r t e d out of hole - p lan to run s t r i n g m i l l wi th 36 i n c h e s of flat s e c t i o n and 4 - 3 / 4 - i n c h OD.

Ju ly 25 - P u l l e d m i l l f r o m hole - Mi l l a p p e a r s to have been d r i l l i n g on m e t a l about 4 - 3 / 4 - i n c h in d i a m e t e r - r e p l a c e m e n t m i l l w a s bui l t with OD too l a r g e -A c m e Tool Co . g r i n d i n g down m i l l - shu t down o v e r n i g h t .

Ju ly 26 - Ran s t r i n g m i l l 4 - 3 / 4 - i n c h OD 36 i n c h e s length t a p e r e d both ends -v^ith 4 - i n c h OD t a p e r e d m i l l 3 ft be low s t r i n g m i l l - r a n in ho le wi th h y d r a u l i c j a r s and 2 - 3 / 8 - i n c h E U E tubing - m i l l e d out c a s i n g f r o m 5529. 5-5531 ft KB and m i l l e d c a s i n g f r o m 5628-5630 ft KB - T a g g e d Model "D ' a t 5654 ft KB -R e v e r s e c i r c u l a t e d a t top of Mode l " D " for 30 m i n u t e s - l a id down 2 - 3 / 8 - i n c h tubing - shu t down o v e r n i g h t .

Ju ly 27 - Ran B a k e r L o c k s e t P a c k e r wi th 2 - 1 / 1 6 - i n c h s t i n g e r below 5 ft long wi th m u l e shoe - B a k e r plug r e c e i v i n g n ipp le above p a c k e r - P a n in ho le wi th 2 - 1 / 1 6 - i n c h tubing - Had no p r o b l e m s in p r e v i o u s l y m i l l e d c a s i n g poin ts -t a g g e d a t 5644 ft KB - W a s h e d down to 5647 ft KB - R e v e r s e d out m e t a l cu t ­t i ngs - Set p a c k e r and s e t a t 5638 ft KB - could not p r e s s u r e up - c i r c u l a t e d up annu lus - pu l l ed p a c k e r to 5500 ft KB - shut down o v e r n i g h t ,

Ju ly 28 - P u l l e d p a c k e r out of hole - had deep s c r a t c h e s a r o u n d o u t s i d e in m e t a l - Ran B a k e r Mode l " D " m i l l i n g tool wi th p a c k e r c a t c h e r , four 3 - 1 / 8 - i n c d r i l l c o l l a r s , wi th 2 - 3 / 8 - i n c h tubing - r a n to 5500 ft - shu t down for night ,

Ju ly 29 - T a g g e d a p p a r e n t d a m a g e d s e c t i o n in c a s i n g at 5647 ft KB - Mi l l ed t h r o u g h s e c t i o n - c l e a n e d out to Mode l " D " - s t a r t e d m i l l i n g on Mode l " D " -P a c k e r is a p p a r e n t l y going down ho le s lowly du r ing m i l l i n g - fol lowed down hole to 5660 ft KB w h e r e p a c k e r s topped - s t a r t e d ge t t ing r u b b e r back i n d i c a ­t ing top s l i p s a r e m i l l e d up - p a c k e r c a t c h e r i s not l a t c h e d below Mode l " D " - s t r i n g i s f r e e on p ickup - w i l l have to m i l l o v e r bo t t om s l i p s and a l low packe body to d r o p down h o l e .

- 6 5 -

July 30 - Milled on Model "D" packer - P.ecovered some rubber in r e t u r n s . Tripped out of hole. Safety joint was broken allo'wing packer catcher to col­lapse . Made up safety joint, ran back in hole with milling tool - latched into Model "D" packer - pulled 30, 000 lbs over s t r ing wt - Could not move packer - mi l led on packer . Made unsuccessful at tempt to dr ive packer downhole. Pulled two stands of tubing - String was free on pickup - no drag - Packer is at 5664 ft KB, Shut down for night.

July 31 - Ran two stands of tubing, picked up power swivel and nnilled on Model "D" from 5664-5667 ft KB. Mill stopped cutting - Tripped out of hole -left spring, latch, safety joint, and 2. 43-inch OD inside mi l l off of Baker Model C-1 packer mill ing - re t r ieving tool in hole. Shut down for night.

August 1 - T r ip in hole with Baker Lockset packer and 2 -3 /8 - inch tubing -Set packer 5656 ft KB - Repaired leaks in tr iplex pump. Pump down tubing into fornnation at 1 BPM. P r e s s u r e var ied from 1300 psi initially to 750 psi . Laid down 2-3 /8- inch tubing and 3-1 /2- inch dr i l l co l l a r s . Changed pipe r a m s , slip segments , and e levators and p repared to run Baker Lockset packe on 2-1/16- inch tubing. Shut down overnight.

August 2 - Picked up Baker Lockset packer with plug nipple just above packer Tripped into hole with 2-1/16- inch IJ tubing - spaced out and set packer at 5654 ft KB. P r e s s u r e d up down tubing - fluid connmunicated up annulus. Released packer and r e se t at 5655 ft KB. Fluid communicated up annulus -r e se t packer at 5652 ft KB. No communication. Spaced out and hung tubing in head with packer set at 5652 ft KB. P r e s s u r e d up down tubing - fluid communicated. Set packer at 5650 ft and fluid communicated. Hung tubing in head, instal led well head - shut down overnight.

August 3 - Remove well head - Set Baker Lockset packer at 5642 ft KB -P r e s s u r e up - Pump into formation at 1400 psi at about 1 BPM. Space out -set packer at 5643. 5 ft KB - punnp into formation OK - Hung tubing in head. Nipple up - Rig up to run 1. 9-inch OD tubing - Run 40 joints tubing-tong head broke - shut down overnight,

August 4 - Pick up 133 joints 1, 9-inch OD tubing (total of 173 joints) landed at 5572 ft KB. Hung in well head - Remove BOP's - lower split tubing hangers instal l well head - Rig up to swab.

August 5 - Shut down - No standby charge

August 6 - Swabbed liquid level from 300 ft to 4200 ft through 1. 90-inch IJ tubing str ing - No gas entry - shut down overnight.

August 7 - Found liquid level at 2000 ft from surface - swabbed down to 4000 ft making four to five runs per hour - No gas entry yet - shut down overnight.

-66 -

August 8 - Found liquid level at 3800 ft from surface - swabbed down to 5570 ft - Pulling two runs per hour, 1000 ft liquid per run - Casing p r e s s u r e built up to 25 psig - shut in overnight,

August 9 - Found liquid level at 4300 ft f rom surface - casing p r e s s u r e built up to 40 psig overnight - Swabbed down to 5570 ft - Pulling two runs per hour -600 to 800 ft of liquid per run - Casing p r e s s u r e built up to 50 psig - Shut in for night - EIC analysis of water and gas indicates no radioactivity from nuclear detonation.

August 10 - Found liquid level at 4300 ft fronn surface casing - p r e s s u r e 70 psig - built up to 70 psig overnight - Swabbed do^vn to 5570 ft - Making two swab runs per hour, pulling 400-500 ft of liquid per run - casing p r e s s u r e built up to 75 psig - Shut in for night.

August 11-12 - Shut down - No standby charge

August 13 - Found casing p r e s s u r e at 95 psig, liquid level at 3800 ft from surface . Swabbed well down to 5570 ft - Making two runs per hour, pulling 400-500 ft per run. Casing p r e s s u r e went down to 80 psig - Shut in overnight,

August 14 - Found casing p r e s s u r e at 95 psig - liquid level at 4300 ft from surface . Swabbed well dow^n to 5570 ft - Making two runs per hour - pulling 400-500 ft of liquid per run - Casing p r e s s u r e went down to 90 psig. Shut in overnight.

August 15 - Found casing p r e s s u r e at 100 psig - Liquid level at 4300 ft from surface . Swabbed well down to 5 570 ft - nnaking two runs pe r hour - Pulling 400-500 ft of liquid per run - casing p r e s s u r e went down to 90 psig - Ran swab down 2-1 /16- inch tubing - found liquid level at 900 ft from surface -2 -1 /16- inch s t r ing had 10 psig at surface - shut in v/ell overnight.

August 16 - Found casing p r e s s u r e at 110 psig - Liquid level at 4400 ft from surface - Swabbed well down to 5570 ft Making one run per hour - Pulling 700-800 ft per run - Casing p r e s s u r e went down to 100 psig - Shut well in for night. Caught samples of recovered liquid to send to Dowell Resea rch Laboratory for analysis and evaluation for planned st imulation job - Liquid appears dark-colored and is car ry ing very fine sediments ,

August 17 - Found casing p r e s s u r e at 140 psig - 2 -1 /16- inch tubing p r e s s u r e 0 psig - 1, 90-inch tubing p r e s s u r e at 25 psig - Liquid level at 4500 ft from surface - swabbed well down to 5570 ft - Making one run per hour, pulling 600-700 ft per run - Casing p r e s s u r e remf.ined at 150 psig - Shut well in for night.

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August 18 - Found casing p r e s s u r e at 150 psig - 2 -1 /16- inch tubing p r e s s u r e 0 psig - 1. 90-inch tubing p r e s s u r e at 25 psig - Liquid level at 4600 ft from surface - Sw^abbed well down to 5570 ft - Making one run per hour pulling 600 to 700 ft per run - Casing p r e s s u r e remained at 150 psig - Shut well in for night.

August 19 - Shut down - No standby charge .

August 20 - Found casing p r e s s u r e at 200 psig - 2-1 /16- inch tubing p r e s s u r e at 50 psig - 1. 90-inch tubing p r e s s u r e at 55 psig - Liquid level at 4500 ft from surface. Swabbed well down to 5570 ft - Making one run per hour pull­ing 500-600 ft per run - Casing p r e s s u r e remained at 200 psig. Shut in well for night.

August 21 - Found casing p r e s s u r e at 225 psig - 2 -1 /16- inch tubing p r e s s u r e at 25 psig - 1. 90-inch tubing p r e s s u r e at 50 psig - Liquid level at 4700 ft from surface - Swabbed down to 5570 ft - Making one run per hour, pulling 600 ft of liquid per run - casing p r e s s u r e remained at 225 psig - Shut dow^n overnight.

August 22 - Found casing p r e s s u r e at 240 psig - 2 -1 /16- inch and 1. 90-inch tubing p r e s s u r e s at 50 psig - Liquid level at 4700 ft from surface - Swabbing from 5570 ft - Making one run per hour pulling 600 ft of liquid per run -casing p r e s s u r e remained at 240 psig - Shut down overnight.

August 23 - Found casing p r e s s u r e at 270 psig - 2 -1 /16- inch at 25 psig, 1. 90-inch at 60 psig - Liquid level at 4700 ft from surface - Swabbing well from 5570 ft. Making one run per hour, pulling 500-600 ft of liquid per run, c a s ­ing p r e s s u r e went up to 280 psig - well unloaded and flowed for 15 minutes then died, casing p r e s s u r e down to 240 psig - Shut well in - Moved off work-over rig - P repa r ing to s t imulate well on August 24.

August 24 - Found casing p r e s s u r e at 270 psig - 2 -1 /16- inch tubing p r e s s u r e at 50 psig - 1. 90-inch tubing p r e s s u r e at 80 psig - connected Dowell and Nowsco lines and p r e s s u r e tested - Pumped in 70 bbls of inhibited gas well acid mixed with 12, 000 scf of N2 at 2300 psig - Casing p r e s s u r e at end of displacement was 1800 psig - Connected l ines to annulus and displaced gas well acid into perfs (5600-5630 ft) with 80, 000 scf of N2. Final and maximum p r e s s u r e was 3200 psig - Immediate SIP 3200, 15 minute SIP 3200 psig. At 70, 000 scf displacement down annulus, p r e s s u r e on 2-1 /16- inch tubing inc reased to 1200 psig - No breaks in p r e s s u r e while spotting or displacing acid - Left well shut in for one hour and s ta r ted flowing well to pit from 1.90-inch tubing at 1:45 p . m . - Well died at 8:00 p . m . - had 80 psig on annulus - had 60 psig on 2-1/16- inch tubing str ing - Shut in well overnight.

August 25 - Found 750 psig on annulus, 200 psig on 2-1 /16- inch tubing, opened up 1. 90-inch tubing to pit - would not unload - moved on workover rig and rigged up - Swab c a r r i e r threads were damaged - Waited on new

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c a r r i e r - Swabbed two hours , liquid level at 3000 ft from surface - Casing p r e s s u r e at 4:00 p . m . 850 psig. Shut down overnight.

August 26 - Shut down.

August 27 - Found casing p r e s s u r e at 1100 psig - 2-1/16- inch tubing p r e s s u r e at 200 psig, 1. 90-inch tubing p r e s s u r e at 700 psig - Opened well to pit from 1. 90-inch s t r ing - Well would not unload - Swabbed well in - Flowed for two hours and died - Casing p r e s s u r e went down to 400 psig - Swabbing from 5570 ft, making two runs per hour and pulling 1000 ft of liquid per run - Well comes in and flows for about 10 minutes and dies - Casing p r e s s u r e staying at 300 psig -Shut well in at 4:00 p . m . Casing p r e s s u r e at 300 psig.

August 28 - Found casing p r e s s u r e at 600 psig - 2 -1 /16- inch tubing p r e s s u r e at 200 psig - Opened well to pit from 1. 90-inch str ing - Well died - Casing p r e s s u r e would not unload well - Found liquid level at 3800 ft from surface -Swabbed well in - flowed for two hours and died - Making one swab run per hour from 5570 ft - Well flows for about 30 minutes and d ies . Casing p r e s s u r e remaining at 250 psig - Shut well in at 4:00 p . m . - Casing p r e s s u r e at 250 psig.

August 29 - Found casing p r e s s u r e at 475 psig - 225 on 1. 90-inch tubing. Opened to pit, well would not unload - Found liquid level in 1. 90-inch at 4300 ft from surface . Swabbed well in, flowed for one hour and died. Cas ­ing p r e s s u r e went down to 250 psig - making one swab run per hour. Well flows about 30 minutes and dies - Casing p r e s s u r e remaining at 250 psig -shut well in at 4:00 p . m . - Casing p r e s s u r e at 250 psig. Shut down over­night.

August 30 - Found casing p r e s s u r e at 475 psig - 2 -1 /16- inch tubing p r e s s u r e 200 psig - 1. 90-inch tubing p r e s s u r e 225 psig. Opened to pit from 1. 90-inch tubing - would not unload. Found liquid level in 1. 90-inch at 4300 ft from surface - Swabbed well in - flowed for 45 minutes and died - casing p r e s s u r e went down to 250 psig - making one swab run per hour, well flows about 30 minutes and dies - Casing p r e s s u r e remaining at 250 psig. Shut well in at 4:00 p . m . , casing p r e s s u r e 250 psig. Shut down overnight.

August 31 - Found casing p r e s s u r e at 475 psig - Shut down swabbing -Moving in 400 bbl tank and circulat ing equipment. Pumping water to mix 2% KCl water to kill well for planned frac on zone 5082-5128 ft on about September 7, 1973.

September 1 - Found casing p r e s s u r e at 850 psig - Pumping water to 400 bbl tanks, rigging up circulat ing equipment.

September 2-3 - Shut down, casing p r e s s u r e 1000-1100 psig. No standby charge .

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September 4 - Casing p r e s s u r e 1200 psig - Blew >vell dow^n - Mixed 900 bbls of 2% KCl water with 2 gal Adamol per 1000 gal water - Killed well down 1. 90-inch tubing with 125 bbls . Filled 2-1/16- inch tubing with 2 bbls - Installed Shaffer double gate Hydril BOP - Rigged up floor - Worked for th ree hours trying to re lease Baker Lockset Packe r - Could not r e l ease - Shut well in -P repa r ing to c i rcula te down near top of packer with 1. 90-inch tubing before pulling 1. 90-inch tubing from hole.

September 5 - Circulated to 5640 ft KB with bottom of 1. 90-inch tubing -Pulled 1.90-inch tubing from hole - Released Lockset Packer and pulled 2-1/16- inch tubing. Shut down overnight. (Laid down 15 joints each of 1.90-inch and 2 -1 / l 6 - i nch ) .

September 6 - Moved in 2 -7 /8- inch EUE Tubing - Ran Baker 5-1/2- inch c a s ­ing sc rape r on 2-7 /8- inch tubing to 5378 ft KB. Started out of hole. Shut down overnight.

September 7 - Finished pulling 2 -7 /8 - inch tubing, laid down casing s c r a p e r . Rigged up D r e s s e r Atlas to log and per fora te . Ran CBL-Variable Density Log from 5400-4500 ft. Bond log was identical to Bond Log run on 4 /25/70 p r io r to the nuclear st imulation. Per fora ted upper For t Union sand interval with 18 NCF-V je ts as follows: 5084, 86, 88, 90, 94, 97, 98, 5100, 02, 06, 08, 10, 12, 14, 16, 22, 24, 5126 ft KB. Rigged down D r e s s e r At las , Ran Baker Model "C" Retrievable Bridge Plug and Model " E " Retr ievable Packer on 2-7 /8- inch tubing. Set Bridge Plug at 5327 ft KB and Model " E " at 5010 ft KB. Shut down overnight.

September 8 - Rigged up Dowell to frac interval from 5084-5126 ft KB. P r e s ­sured annulus to 1000 psig using rig pump. Dowell tes ted l ines to 7300 psig -Held OK. F raced with 10, 000 lbs of 20-40 sand and 2900 lbs 10-20 sand. Average sand concentrat ion was 3/4#/gal lon. Average ra te 12. 5 BPM with approximately 1200 SCF/bbl of CO2. Used total of 40 tons of CO2, 520 bbls of 2% KCl water mixed with 2 gal of Adamol per 1000 gal of wate r . Job s tar ted at 10:30 a . m . - finished at 11:13 a . m . Started flowing to pit at 12:05 p . m . Format ion broke down at 5500 psig. Broke back to 4500 psig. ISIP 1600 psig. Blew well overnight. Making CO2 and water - Gas s ta r ted burning continuously after six hours of flowing. Es t imate 300-400 bbls of water flowed back.

September 9 - Well st i l l flowing - es t imate water production at 1 bbl per hour and slowly decreas ing . Es t imate gas ra te at 100-150 MCF/D. Shut in well for buildup at 9:15 a . m .

September 10 - Surface tubing p r e s s u r e 960 psig - Well shut in - Pig shut down.

September 11 - Surface tubing p r e s s u r e 1380 psig - Well shut in - Rig shut

down.

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September 12 - Surface tubing p r e s s u r e 1510 psig at 8:00 a . m . Star ted flowing well to pit at 12:30 a . m . with 2-inch Cr i t ica l Flow P rove r with 0.125-inch orif ice. Initial p r e s s u r e 1515 psig. Stabilized at 930 psig. Rate #1 - 322 MCF/D, changed to 0. 250-inch orifice - stabil ized at 330 psig. Rate #2 - 480 MCF/D, changed to 0. 375-inch orif ice. Stabilized at 150 psig -Rate #3 ^ 498 M C F / D . Shut well in at 1:45 a . m . , September 13. Well built up to 1210 psig at 8:00 a . m . September 13.

September 13 - Bled well down to pit - killed well down 2-7 /8- inch tubing with 40 bbls of 2% KCl water mixed with 2 gals of Adamol per 1000 gals of wate r . Released Baker Packer - Reversed out 20 ft of frac sand from above Baker Bridge Plug. Released Bridge Plug. Lost 80 bbls of 2% KCl water while revers ing out sand. Started out of hole with bridge plug and packer , laying down 2-7 /8- inch tubing. Shut down overnight.

September 14 - Laid down remainder of 2 -7 /8- inch tubing and Baker Bridge Plug and Packer - Ran Baker Model " F . H . " doable gr ip Hydrostat ic packer on 163 joints of 2-1 /16- inch tubing - Hydrotested tubing into hole - laid down 2 bad joints - Baker " F " plug nipple located at 5288 ft KB, Packer landed at 5293 ft KB. Halliburton c i rcula ted hole with 33 bbls, dropped ball and pumped down 2-1 /16- inch with 12 bbls, p r e s s u r e d up and set packer . Ball sheared out of packer at 2200 psig. Pumped down 2-1/16- inch at 1-1/2 BPM at 1000 psig for 3 minutes , no water re tu rns to surface, Annulus went on vacuum while pumping down 2-1 /16- inch tubing. Released Hall iburton. Shut in well. Shut down overnight.

September 15 - Found no p r e s s u r e on well . Rigged up to run 1, 90-inch IJ tubing - Ran 3 ft pinned joint on bottom and 158 joints of 1. 90-inch tubing landed at 5084 ft KB. Removed BOP and instal led dual wellhead, rigged up to swab 1. 90-inch tubing - Found liquid level at 300 ft, made 6 swab runs . Shut down overnight. (Laid down 11 bad joint? of 1. 90-inch tubing).

September 16 - Swabbed well down to 1600 ft, casing p r e s s u r e at 600 psig -well s ta r ted flowing gas and water to pit - Let well flow overnight to clean up. Est imated ra te 250 MCF/D. Well appears to be cleaning up and ra te inc reas ing .

September 17 - Well flowed to pit to clean up until 4:30 p. m . , Shut in well . Es t imated ra te at shut- in 450 MCF/D. Released pulling unit and moved off of hole. P r e s s u r e at 8:00 a . m . September 18 - Tubing P r e s s u r e at 1340 -Casing p r e s s u r e at 1400 psig.

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REMEDIAL WORK - November 23 - December 5, 1974

1974

November 23 - Nippled down tubing head. Total depth 7895 ft. Plugback total depth 6460 ft. Workover unit on location at 0930, moved in and rigged up. Dowell pump truck did not show. Called Halliburton. Pump truck on location at 1430. Mixed 550 bbls of 2% KCl water and killed annulus by pumping 25 bbls water down 1. 9-inch tubing and 100 bbls water down 5 -1 /2 -inch casing. Pump down overnight.

November 24 - Rigged up to pull 2-1/16- inch tubing. Unit operat ion de r r i ck man did not show up for work. Found well had frozen up, used EIC s t eamer to thaw same . Nippled down wellhead, nippled up BOP. Pulled 1. 9-inch tubing out of hole. Started rigging up to pull 2 -1 /16- inch tubing and Baker Model FH packer out of hole.

November 25 - Total depth 7895 ft. Plugback total depth 6460 ft. Finished rigging up to pull 2-1/16- inch tubing and packer . Fi l led annulus with 23 b a r r e l s of wate r . Pulled 50, 000 lbs on packer . Would not r e l e a s e . Rigged up wire line t ruck and pulled Baker Model FWG plugs out of seating nipple at 5288 ft. Pumped 27 bbls of water down 2-1 /16- inch tubing at 1-1/2 b a r r e l s per minute at 800 psig. Establ ished communication with annulus with 19 b a r r e l s . Rigged down Halliburton. Shut well in overnight.

November 26 - Pumped 25 b a r r e l s of 2% KCl water in annulus. Picked up 38, 000 lbs on 2-1/16- inch tubing and re l eased packer . Pulled out of hole -laid down 172 joints of 2-1 /16- inch IJ tubing. Laid down Baker Model FH packer . Fil led hole with 35 b a r r e l s of water . Shut well in. Tall ied 172 joints of new 2-1 /16- inch IJ tubing. 2 joints of 172 were bad.

Novemiber 27 - Found no p r e s s u r e on well . Pump froze up. Did not pump 2% KCl water . Picked up r e d r e s s e d Baker Model FH hydrostat ic packer with Baker Model F nipple 5 ft above packer . Went in hole with 94 joints 2-1 /16- inch IJ tubing. Hydrotested each joint into hole with 3250 psig. Bottom packer of hydrotes ter tool locked up approximately 70 ft down hole in 92ndjoint into hole. Unable to r e l ease - laid down 3 joints . Found hydro-tested packer 1 ft before box end of 92ndjoint into hole. Well required welder to split joints into recovered tool. Fil led hole with 20 b a r r e l s of 2% KCl water . Shut in well . Found no leaks in 91 joints cur rent ly in hole.

November 28 - Shut down for Thanksgiving.

November 29 - Found no p r e s s u r e on well . Pump froze up. Laid Baker Model FH packer to 5262 ft GL with 167 joints 2 -1 /16- inch IJ tubing. Baker

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F Nipple at 5257 ft GL. Hydrotested all 2 -1 /16- inch IJ tubing in hole to min imum p r e s s u r e of 3000 psig. Fi l led hole with 2% KCl wa te r . Set packer and sheared out ball at 2700 ft psig. Pumped 10 b a r r e l s of 2% KCL water down 2-1 /16- inch tubing at 1-1/2 b a r r e l s per minute and 1300 psig casing or on vacuum. Shut well in. Star ted rigging up to run 1. 90-inch IJ tubing.

November 30 - Found no p r e s s u r e on well . Pumped no water into hole. Pan 155 joints of 1. 90-inch IJ tubing with 3 ft bent joint on bottom. Landed 1. 90-inch IJ tubing at 4969 ft GL. Removed BOP ' s . Installed wellhead and p r e s s u r e tes ted sea ls to 3000 psig. Held OK. Rigged up and unloaded tubing on casing side with nitrogen. Shut well in.

December 1 - Found well on vacuum. Connected Nowsco to 1. 90-inch tubing s t r ing. Displaced 80 b a r r e l s of water up annulus with 60, 000 SCF nitrogen into flat tank. Maximum 2500 psig. Unloaded water . Shut down nitrogen injection. Let well flow for 2 hours at ra te of approximately 1 MMSCF per day. No water to surface after ini t ial 80 b a r r e l s . Surface tubing p r e s s u r e 1500 psig. Star ted to change flow from casing to tubing. Mas te r valve on w^ellhead tubing t r ee >vould not hold p r e s s u r e . Left No'wsco valve on head. Disconnected Nowsco t ruck. Will have to kill well , change out m a s t e r valve and unload well with nitrogen. Shut in overnight - a r ranged for Hall iburton for December 2, 1974 a . m . EIC checked recovered wate r . No detectable t r i t ium in water ,

December 2 - Killed well with 150 b a r r e l s 2% KCl water . Changed out m a s t e r valve on 1.90-inch IJ tubing s ide. Connected Nowsco to 5-1 /2- inch x 1.90-inch annulus. Unloaded well with 100, 000 SCF nitrogen. Maximum p r e s s u r e 2500 psig. Left well flowing overnight.

December 3 - Full well flowing at es t imated ra te of 125 MCF per day, fine water m i s t with gas . Shut well in, r e l eased R&R, s ta r ted t ie - in of well to s epa ra to r .

December 4 - Finished t ie - in of well to s epa ra to r . Tied in water injection line to 2-1 /16- inch tubing s t r ing . Serviced all WKM valves on wellhead.

December 5 - Installed building over wellhead. Finished heat taping water injection l ine.

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APPENDIX C

PERMIT FOR SUBSURFACE DISPOSAL FINDINGS OF FACT, PUBLIC HEARING

ON WATER DISPOSAL APPLICATION

WATER QUALITY CONTROL DIVISION COLORADO DEPARTMENT OF HEALTH

November 9, 1973

APPLICATION OF CER - GEONUCLEAR CORPORATION AND THE CONTINENTAL OIL COMPANY TO OPERATE A SUBSURFACE DISPOSAL SYSTEM UPON AND UNDER A TRACT OF LAND 739 FEET FROM THE WEST LINE AND 2357 F E E T FROM THE NORTH LINE OF SECTION 14, T3S, R98W, RIO BLANCO COUNTY, COLORADO

1. The Colorado Water Quality Control Commission has found, after Public Hearing and due considerat ion, that subsurface disposal , as proposed in the application by CER Geonuclear Corporat ion and the Continental Oil Company, could take place within the meaning of Section 66-28-505(1) of the Colorado Water Quality Control Act of 1973.

2. The Colorado Water Quality Control Division hereby grants CER Geonuclear and the Continental Oil Company a pe rmi t for the operat ion of a subsurface disposal sys tem as provided for in Section 66-28-505(2) of the Act and as provided for in Section 3(d) of the Emergency Rules for Subsurface Disposal Sys tems , effective October 16, 1973; subject to the following conditions and s t ipulat ions:

A) Discharge under this pe rmi t may occur for a period of twelve months beginning on November 10, 1973.

B) Total volume injected shall not exceed 24, 000 b a r r e l s (42 gal. /bbl) and concentration of t r i t ium shall not exceed 0. 05 mic ro C i /ml ,

C) Injection pump p r e s s u r e shall not exceed 1800 p. s. i. g.

D) Injection in terval shall be from 5600 feet to 6072 feet.

E) Construction of the sys tem and appur tenances , ei ther as constructed or to be constructed, shall conform to the plans and specifications as

PERMIT FOR SUBSURFACE DISPOSAL

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p r o p o s e d in the P r o j e c t Rio Blanco - S u b s u r f a c e W a t e r D i s p o s a l A p p l i c a t i o n s u b m i t t e d by CER G e o n u c l e a r June 1 1 , 1973 , e x c e p t tha t the d i s p o s a l i n t e r v a l i n c l u d e s the zone f r o m 5600 to 5630 fee t , a s s u b s e q u e n t l y a m e n d e d by the a p p l i c a n t .

F) O p e r a t i o n a l p r o c e d u r e s , inc lud ing a l a r m s y s t e m s , s h a l l be i m p l e ­m e n t e d a s p r o p o s e d in the a p p l i c a t i o n r e f e r r e d to a b o v e .

G) If t e s t i n g of the R B - E - 0 1 w e l l and s u b s e q u e n t d i s p o s a l in to the F a w n C r e e k G o v e r n m e n t No . 1 w e l l ( p r o p o s e d d i s p o s a l s y s t e m ) i s conduc t ed in p h a s e s , the W a t e r Qua l i ty C o n t r o l Div i s ion and the O c c u p a t i o n a l and Rad io log i ca l Hea l th Div i s ion of the C o l o r a d o Depar tnnen t of H e a l t h s h a l l be not i f ied i m m e d i a t e l y upon connple t ion of the t e s t i n g p e r i o d and a t l e a s t five days be fo re the r e s u m p t i o n of a new t e s t i ng p e r i o d .

H) Any d e v i a t i o n f rom t e s t i n g o r in j ec t ion p r o c e d u r e s a s ou t l ined in the a p p l i c a t i o n r e f e r r e d to in (E) above s h a l l r e q u i r e p r i o r a p p r o v a l of the W a t e r Qua l i ty C o n t r o l D iv i s ion and s h a l l be r e q u e s t e d in w r i t i n g in suff ic ient t i m e to p r o v i d e a d e q u a t e t i m e for r e v i e w and a p p r o v a l .

I) E m p l o y e e s of D e p a r t m e n t of H e a l t h and D e p a r t m e n t of N a t u r a l R e s o u r c e s s h a l l be a l lowed a c c e s s to the s i t e wi thou t p r i o r no t i f i ca ­t ion for p u r p o s e of o b s e r v a t i o n of o p e r a t i o n s and s a m p l e c o l l e c t i o n of w a s t e a n d / o r p r o d u c t s . Such a c c e s s , h o w e v e r , to be s u b j e c t to e s t a b l i s h e d hea l th and sa fe ty p r e c a u t i o n s .

J) Th i s p e r m i t s h a l l not be a s s i g n e d no r o p e r a t i o n s c o n t r a c t e d to a n o t h e r p a r t y wi thou t p r i o r w r i t t e n a p p r o v a l of the C o l o r a d o W a t e r Qua l i ty C o n t r o l D iv i s ion .

Mon i to r i ng s h a l l be conduc ted by C E R G e o n u c l e a r and the Con t inen t a l Oi l C o m p a n y a s fo l l ows :

A) S a m p l e s of gas and in j ec t ed fluid sha l l be a n a l y z e d for c h e m i c a l and r a d i o l o g i c a l c o n s t i t u e n t s f r o m the l o c a t i o n s and at the f r e q u e n c i e s i n d i c a t e d in Exhib i t "A" , A n a l y s e s s h a l l be p e r f o r m e d by the a p p l i ­c a n t ' s l a b o r a t o r y o r an i ndependen t l a b o r a t o r y a p p r o v e d by the D'.vision and the r e s u l t s of the a n a l y s e s c e r t i f i e d .

B) Upon r e q u e s t of the C o l o r a d o W a t e r Qua l i ty C o n t r o l D iv i s ion , the app l i can t sha l l p r o m p t l y fu rn i sh , at the t i m e i n t e r v a l s i n d i c a t e d and a t the a p p l i c a n t ' s c o s t , s a m p l e s for a n a l y s i s by the C o l o r a d o D e p a r t ­m e n t of H e a l t h . The s a m p l e s sha l l be in the quan t i ty and f r o m the l o c a t i o n s a s spec i f i ed by the Div i s ion and s h a l l be p r o p e r l y l a b e l e d .

C) CER G e o n u c l e a r C o r p o r a t i o n and Con t inen ta l Oil C o m p a n y , by u n d e r ­taking the d i s c h a r g e which is the s u b j e c t of the a p p l i c a t i o n , a g r e e

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to per form such additional monitoring p rocedures and instal lat ions as may be requ i red upon subsequent review by the Division, at the expense of the appl icants .

4. All ru l e s , regulat ions, o r d e r s , guidelines, etc . , by the Colorado Water Quality Control Commission present ly in effect, as well as any subsequent ru les or regulations adopted by the Commiss ion, shall be observed by the appl icants .

5. This authority to d ischarge shall t e rmina te in all r e spec t s , except for such monitoring and report ing procedures as requ i red in Exhibit "A", twelve months from the effective date, unless the Colorado Water Quality Control Division shall extend the te rminat ion date.

6. This pe rmi t shall in no way be construed to re l ieve the applicants from complying with the requ i rements and regulat ions of other State and Fede ra l regulatory agencies , including the Occupational and Radiological Health Division of the Colorado Department of Health, Nothing here in contained shall be construed to rel ieve the pe rmi t t ee s from the observance of, per formance of, or compliance with, any conditions, dut ies , or oblig­ations imposed by any order , pe rmi t or l icense issued by any agency of the State of Colorado,

BY ORDER OF THE COLORADO WATER QUALITY CONTROL DIVISION

s / F r a n k J. Rozich s/Roy L. Cleere Frank J. Rozich, P . E. Roy L. C lee re , M. D. , M. P . H. Direc tor , Colorado Water Executive Direc tor , Colorado Quality Control Division Department of Health

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WATER QUALITY CONTROL DIVISION COLORADO DEPARTMENT OF HEALTH

November 9, 1973

MONITORING PROCEDURES FOR ) SUBSURFACE DISPOSAL SECTION 14, ) EXHIBIT "A" T3S, R98W, RIO BLANCO COUNTY, ) COLORADO )

As a condition of the permi t for subsurface disposal , CER Geonuclear and Continental Oil Company shall perform the following monitoring p rocedures :

1. Gas and water sampling schedules and analyses as proposed in the application (Table IVD-1, Page 94), shall also include an analysis for t r i t ium for the gas and water produced from the disposal well (Fawn Creek Government No. 1). Results of the chemical and radiological analyses of the samples will be submitted to the Division within five days after the completion of the ana lyses .

2. Water injection ra tes and p r e s s u r e s shall be moni tored continuously and recorded on a daily bas i s . Daily records shall indicate the maximum injection pump p r e s s u r e as well as the average (or operating) p r e s s u r e and ra t e . Daily r e c o r d s , including volume, shall be submitted monthly in duplicate to the Division by the tenth day of the month for the proceeding month, or ten days after the connpletion of any testing period.

3. The disposal well shall be shut down and a p r e s s u r e fall off test per formed at each ten day interval and at the conclusion of any testing period. The shut down period is to be as long as necessa ry to obtain conclusive r e su l t s . Data and /o r char ts a re to be submitted to the Division within five days after completion of the p r e s s u r e fall off test .

4. Water samples shall be collected and analyzed for radioact ive consti tuents from the following wel ls : RB-D-01 , RB-S-03, and RB-W-01 (W-1), as identified and located on Plate 11 of the Pro jec t Rio Blanco - Subsurface Water Disposal Application.

Collection and analysis shall be weekly throughout the disposal period and for one month thereaf ter . If no anomalous amounts of radioactive consti tuents a re observed during this period, then collection and analysis shall be on a monthly basis for twelve months after injection has t e r m i ­nated. If at any t ime anomalous amounts of radioact ive consti tuents a r e observed, the injection sys tem shall be shut down and the Water Quality Control Division promptly notified. Reinjection shall not be s ta r ted without pe rmiss ion from the Division.

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Monitoring procedures and conditions outlined above a r e supplemental to the p resen t monitoring p rogram requi red in the P e r m i t for Subsurface Nuclear Detonation and in no way re l ieves CER Geonuclear from the requ i rements of the previous pe rmi t .

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BEFORE THE WATER QUALITY CONTROL COMMISSION OF THE STATE OF COLORADO

IN THE MATTER OF APPLICATION OF C. E . R. GEONUCLEAR CORPORATION ENTITLED "PROJECT RIO BLANCO SUBSURFACE WATER DISPOSAL APPLICATION" DATED JUNE 11, 1973, AS AMENDED

FINDINGS OF FACT

This ma t t e r came on for public hear ing on September 24, 1973 before John Phil l ip Linn, Hearing Officer for the Water Quality Control Commission, State of Colorado. The hearing was closed the same day.

Continental Oil Company, the unit opera tor of the Rio Blanco unit, whose employees and executives a re making the management decisions concerning Pro jec t Rio Blanco, was admitted as a par ty to the proceedings .

C. E. R. Geonuclear Corporat ion, hereinaf ter r e f e r r ed to as Pet i t ioner , and Continental Oil Company were r ep resen ted by James D. Voorhees , Esq. , of the f i rm Moran, Reidy & Voorhees , Denver, Colorado.

William Tucker , Ass is tant Attorney General , State of Colorado, appeared on behalf of the Water Quality Control Commiss ion.

FINDINGS OF FACT

1. The Water Pollution Control Commiss ion of the State of Colorado approved the Pe t i t ione r ' s reques t for a pe rmi t in r ega rd to a nuclear detonation plan for Rio Blanco County, applicable to Phase One only of Pro jec t Rio Blanco, on May 4, 1973, nunc pro tunc as of Apri l 17, 1973.

2. Three 30 kiloton nuclear explosives, especial ly designed for gas st imulat ion purposes , which had been placed in the Pro jec t Rio Blanco Well No. RB-E-01 bore at depths of 5840, 6230 and 6690 feet below the surface of the ear th , were detonated on May 17, 1973. The simultaneous explosions of the detonations c rea ted a cyl indrical chimney, having an overal l height of approximately 1, 350 feet and a radius from the center line of the chimney of some 80 feet. The maximum extent of f racture from the center l ine of the chimney is l e ss than 400 feet. The object of the detonation was to f r ac tu re var ious sandstone l aye r s or lenses in which natural gas occur s .

3. The chimney exis ts within the base of the For t Union Format ion and the top of the Mesa Verde Format ion . Between the top of

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the chimney and the surface of the ear th a r e approximately 1, 000 feet of For t Union Format ion; over 2, 000 feet of Wasatch Format ion; and some 3, 000 feet of the Green River Format ion .

4. Contained within the chimney in terval a r e some five mil l ion feet of void volume into which an es t imated 540, 000, 000 s tandard cubic feet of natural gas has flowed. The gas in the chimney is expected to consis t p r imar i l y of methane (CH4)--54 to 42 volume percent ; carbon dioxide (CO2)--30 to 25 volume percent ; hydrogen (H2)--10 to 13 volume percent ; and water vapor (H20)--6 to 20 volume percen t .

5. Following detonation of the Pro jec t Rio Blanco, the Oil and Gas Conservation Commiss ion of the State of Colorado authorized Pet i t ioner to r e - e n t e r and tes t Well No. RB-E-01 of the Pro jec t Rio Blanco by its Order No. 264-2 dated July 17, 1973.

6. The Pet i t ioner now seeks a permi t approving the under­ground disposal of radioact ive waste , i. e. , t r i t ia ted water separa ted during the testing of Well No. R B - E - 0 1 , as pa r t of the Second Phase of the Pro jec t Rio Blanco experiment , which is a joint activity of the Atomic Energy Com­mis s ion and Pet i t ioner to de termine the feasibil i ty of using nuclear explosives in the production of na tura l gas from formations which will not produce under conventional methods .

7. The peti t ioner expects to produce 300, 000, 000 s tandard cubic feet of natural gas , but there is a contingency to produce up to 800, 000, 000 s tandard cubic feet of natural gas, during the testing per iod.

8. The radioisotopes of p r i m a r y in te res t in all of the natural gas c rea ted by the explosion a r e krypton-85 (°^Kr)- -something less than 2, 000 cu r i e s ; and t r i t ium (^H)--something less than 3, 000. Three thousand cur i e s is the equivalent of approximately 3/1 Os of a g r am of t r i t ium. Essen ­tially all of the Kr and about 10 percent of the - H a r e mixed with the chim­ney gas . Other contributions to the total radioactivi ty of the chimney gas a r e smal l amounts of carbon-14 ( C); argon-37 (^ 'Ar) ; and argon-39 (^°Ar).

9. Through Well No. P B - E - 0 1 , r e - e n t r y will penetra te the chimney and f rac tured zone, and at the conclusion of the r e - e n t r y conventional production separat ion equipment will be placed on the surface of the ear th . Gas from the chimney will be produced up the well bore as a r e su l t of the p r e s s u r e and t empera tu re dec rease during this production and some water will condense from the vapor phase and be separa ted as liquid water in the sepa ra to r .

10. The Applicant proposes to reinject the water produced in the Rio Blanco Pro jec t into the formation and a r ea from which it came in o rde r to minimize the amount of radioactivi ty to the biosphere during the

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test ing of the project r e - en t ry well . This water will be s tored in four 400-ba r re l . s torage tanks, analyzed for its radioactivity and other contents , and then be re- in jected through a 2-inch line into the Fawn Creek Government Number 1 Well, some 1320 feet to the south, into an a r ea essent ia l ly opposite of the chimney and in the same lower For t Union Format ion .

11. Hydrocarbon condensate, which will condense out in the separa to r , will be sent to condensate s torage tanks, be checked for radio­activity, be pumped up the f lare stack and be burned along with the gas ,

12. Tr i t ium concentrat ions in the water produced along with the gas , which will be separa ted at the surface of the ear th , will be 0. 05 m i c r o - c u r i e s per mi l l i l i t e r , or . 05 mil l ions of a cur ie of t r i t ium per mi l l i ­l i te r of w a t e r . This is 16 t imes g rea t e r than the p resen t s tandard accepted for drinking water as published by the Fede ra l Radiation Council and the International Council for Radiation Protec t ion , which is . 003 m i c r o - c u r i e s per mi l l i l i t e r for an individual, and .001 m i c r o - c u r i e s per mi l l i l i t e r for the populous at l a rge .

13. Tr i t ium is an isotope of hydrogen, having a m a s s of th ree . It is a unique radioactivity of the isotope hydrogen. It decays with a 12. 26 year half life, emitting exclusively beta pa r t i c l e s . Half life is a convenient representa t ion of the life t ime that the radionuclide exhibi ts . A half life of 12. 26 years means a given quantity of t r i t ium will be reduced to one-half that level in a period of 12. 26 y e a r s , and will be one-fourth of the initial cimount in two one-half l ives , or 24 y e a r s . Tr i t ium decays into inactive he l ium-3 . Water having . 05 m i c r o - c u r i e s of t r i t ium per mi l l i l i t e r would take approximately 50 yea r s to decay to . 003 m i c r o - c u r i e s per mi l l i l i t e r , and would take approxi­mately 70 yea r s to decay to , 001 m i c r o - c u r i e s per mi l l i l i t e r . Consequently, water which will be produced from and during the testing of the RB-E-01 Well will be potable in approximately 70 yea r s on the basis of p resen t knowledge and under existing s tandards .

14. In the production of 300, 000, 000 s tandard cubic feet of natural gas from Well No. R B - E - 0 1 , some 296 cur i e s of t r i t ium will be p r o ­duced, of which 50 cur ies will be separa ted in the separa tor in the liquid water condensed from the gas phase and be diluted in 6, 500 b a r r e l s of water . That 6, 500 b a r r e l s of water will be injected into the Fawn Creek Government Number 1 Well. The remaining 246 cur ies of t r i t ium existing in the gas will be me te red , sent to the f lare stack, and burned off into the a tmosphere .

15. If production of na tura l gas goes to the full 800, 000, 000 s tandard cubic feet, the total t r i t ium production from the well will be 580 cu r i e s , of which 130 cur ies would be diluted in 20, 000 to 24, 000 b a r r e l s of water which would be injected into the Fawn Creek Government Number 1 Well. The remaining 450 cur ies of t r i t ium existing in the gas would be me te red , sent to the f lare stack, and burned off into the a tmosphere . In any case , the krypton-85 and carbon-14 will have to be f lared into the a tmosphere .

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16. R a d i o l o g i c a l p r o t e c t i o n and d o c u m e n t a t i o n of r a d i o a c t i v e ef f luents w i l l be p r o v i d e d un t i l the end of the p r o d u c t i o n t e s t i n g and s u b s e q u e n t s i t e r o l l u p . It i s e x p e c t e d tha t m e a s u r a b l e q u a n t i t i e s of r a d i o a c t i v i t y wi l l be d e p o s i t e d in the i m m e d i a t e v i c in i ty of both the E m p l a c e m e n t Wel l , No . R B - E - 0 1 , and the f l a r e s t a c k a r e a s . W a t e r s a m p l e s wi l l be c o l l e c t e d i m m e d i a t e l y be fo re and a f t e r the f l a r i n g o p e r a t i o n at e a c h of s ix l o c a t i o n s . I n t e r m e d i a t e s a m p l e s w i l l be t aken a t i n t e r v a l s of 3 d a y s . Add i t i ona l s a m p l e s w i l l be c o l l e c t e d at two c l a s s l o c a t i o n s w e e k l y du r ing and a f t e r the f l a r i ng o p e r a t i o n for a p e r i o d of a t l e a s t 4 w e e k s , ex tend ing unt i l a t l e a s t 1 week fol lowing the c o n c l u s i o n of f l a r i n g . T h e s e s a m p l e s wi l l be a s s a y e d for t r i t i u m a c t i v i t y by l iquid s c i n t i l ­l a t i on m e t h o d s and for o t h e r n u c l i d e s by g a m m a s p e c t r o m e t r y . M e t e o r o l o g i c a l and e c o l o g i c a l s t u d i e s i n d i c a t e tha t even with r e l e a s e of a l l g a s e o u s r a d i o ­a c t i v i t y to the a t m o s p h e r e , the m a x i m u m c o m m i t m e n t in the v i c in i ty w i l l be m u c h l e s s than 1 p e r c e n t of the annua l n a t u r a l b a c k g r o u n d r a d i a t i o n .

17. The F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l , into wh ich the t r i t i a t e d w a t e r wi l l be i n j ec t ed , w a s d r i l l e d by Equi ty Oi l C o m p a n y in 1958. The P e t i t i o n e r t e s t e d two i n t e r v a l s in 1969. Then , in e a r l y 1973, P e t i t i o n e r p e r f o r a t e d a d d i t i o n a l s and l e n s e s and r a n a w a t e r i n j ec t i v i t y t e s t which showed tha t the r a t e of w a t e r influx in to the s and i n t e r v a l s of 5745 to 6072 fee t w a s in e x c e s s of 3, 000 b a r r e l s a day at 1, 500 p s i s u r f a c e p r e s s u r e . The i n t e r v a l f r o m 5600 to 5630 fee t w a s show^n f rom e x p e r i e n c e to t ake w a t e r . In e a r l y S e p t e m b e r , 1973 , P e t i t i o n e r p e r f o r a t e d the zone f r o m 5084 to 5126 feet and r e c e i v e d a m p l e q u a n t i t i e s of g a s for i t s p r o d u c t i o n fac i l i ty . P e t i t i o n e r a l s o r a n a c e m e n t bond log f r o m the i n t e r v a l 5400 to 4600 fee t and i t w a s shown tha t t h e r e i s so l id c e m e n t f rom the gas i n t e r v a l a t 5084 to 5126 to the i n t e r v a l w h e r e the w a t e r w i l l be i n j e c t e d f r o m 5600 down to 6072 fee t . The c e m e n t wi l l c o n s t i t u t e a b a r r i e r so tha t t h e r e wi l l be no w a t e r m i g r a t i o n up on the ou t s i de of the c a s i n g .

18. P e t i t i o n e r h a s s u c c e s s f u l l y s e a t e d a B a k e r FH H y d r o s t a t i c P a c k e r 5300, in the c a s i n g of the F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l . T h i s p a r t i c u l a r type of p a c k e r h a s b e e n u s e d in c o n n e c t i o n with w a t e r c o n t a i n ­ing t r i t i u m . Any p a c k e r f a i l u r e would be e v i d e n c e d i m m e d i a t e l y b e c a u s e w a t e r would m o v e up t h rough the 1. 9 inch c a s i n g of the g a s p r o d u c t i o n s t r i n g and even tua l l y the g a s p r o d u c t i o n would d i e . In the even t of a l e a k , i t would be n e c e s s a r y to pul l the tubing s t r i n g s and run a new p a c k e r a f t e r inh ib i t ing the w a t e r o r f i l l ing the c a s i n g wi th f r e s h w a t e r p u m p e d down the 1. 9 inch tube .

19. T h e r e i s a dual h a n g e r in the F a w n C r e e k G o v e r n m e n t N u m b e r 1 W e l l . The c o n n e c t i o n a t which the tubing s c r e w s in to the tubing h a n g e r s h a s been t e s t e d to 4300 ps i and w a s found to have no l e a k s . The j o i n t s b e t w e e n the 2 1 /16" w a t e r in j ec t ion tubing and the e n t i r e s t r i n g have been p r e s s u r e t e s t e d to 3, 000 p s i . The in j ec t ion p r e s s u r e t h r o u g h tha t tubing wi l l be l e s s than 1500 p s i , p r o b a b l y 1000 p s i . An in jec t ion p r e s s u r e of 1500 ps i would p r o v i d e 3770 ps i p r e s s u r e at the point a g a i n s t the bo t tom of the p a c k e r . The g a s zone has a bo t tom hole p r e s s u r e of 1890 ps i so the d i f f e r e n t i a l i s l e s s t han 2000 p s i . T h e p a c k e r shou ld ho ld e v e n w h e n the d i f f e r e n t i a l i s 7000-8000 p s i .

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20. The calculated flooded radius from injected water during the flow period, if approximately 6500 b a r r e l s of water would be produced, in the sand interval from 5600 to 6072 feet, where the net sand that has been opened is 150 feet, would be roughly a radius of 100 feet (less than an ac re ) even if only 20 feet of the 150 feet in terval were tkking water . If 20, 000 to 24, 000 b a r r e l s of water were produced and injected into the same a r ea under a maximum 30-day injectivity tes t , the flooded a rea would be 190 to 195 feet in radius if only 20 feet of the interval took wate r . The water will be d i s t r ib ­uted reasonably uniformly around the well bore in an eccent r ic el ipse approach­ing a c i r c l e . Water injectivity t e s t s , per formed by Pet i t ioner in 1973 from roughly 5660 feet down below that point, which did not include the zone from 5600 to 5630, showed that in excess of 3, 000 b a r r e l s of water per day could be injected into these low^er zones at 1500 psi . surface p r e s s u r e . The ra te of water production which Pet i t ioner anticipates during the testing is 600 b a r r e l s a day.

21 . Pe t i t ione r ' s understanding of the geological formations within a radius of at leas t ten mi les from the Fawn Creek Government Number 1 Well is based upon all available geological information, wi th respec t to that a r ea , including an examination of all available well logs, dri l l ing r e c o r d s , core analys is , and other physical data general ly developed as par t of a d r i l l ­ing p rogram; including geophysical studies and reflection se i smic s tudies ; including a detailed study in the emplacement well a r e a to de te rmine if there were any faults and to check the authenticity and accuracy of previous geo­physical surveys ; and including examinations of the outcrops in the a r ea .

22. In the a r e a of Well No. RB-E-01 and the Fawn Creek Government Number 1 Well, the lowest or deepest geological aquifer or rock that contains sufficient permeabi l i ty and porosi ty to have a reasonable amount of water is the B-aquifer located under the Mahogany Zone in the a r ea of the Fawn Creek Government Number 1 Well. The bottom of this zone is approxi­mately 1400 feet subsurface. There is no evidence of aquifers containing moving water below the B-aquifer .

23. The Mahogany Zone consti tutes a b a r r i e r to water m i g r a ­tion. Above the Mahogany Zone is a f rac tured shale sequence called the A-aquifer . Above the A-aquifer is the Evacuation Creek, which is shales and sandstones having very low capacity. And in the s t r e a m valleys there is a thin layer of alluvium which contains wate r . The alluvium, the A-aquifer and the B-aquifer constitute the viable aquifers in the a r ea in quest ion.

24. The bottom of the B-aquifer is approximately 5, 000 feet above sea level. The top of the f ractured zone of Well No. RB-E-01 is approximately 1, 000 feet above sea level. The t r i t ia ted water will be injected into the Fawn Creek Government Number 1 Well at an interval from 500 to 1, 000 feet above sea level . There is approximately 3, 000 feet of impermeable shale between the top of the zone into which water will be injected and the B-aquifer.

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25 . The B - a q u i f e r , a s the l o w e s t and d e e p e s t area containing p r e s e n t l y u s e a b l e w a t e r , m o v e s at a r a t e of about 35 fee t p e r y e a r . T h e r e i s no s o u r c e of w i t h d r a w a l f r o m the B - a q u i f e r , n e a r the l oca t i on of the F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l , for h u m a n u s e o r i r r i g a t i o n o r any o t h e r publ ic u s e . A p p r o x i m a t e l y t h r e e and o n e - h a l f m i l e s f r o m th i s l oca t ion t h e r e i s a faul t zone which m a y a l low v e r t i c a l m i g r a t i o n of w a t e r which m i g h t r e s u l t in w a t e r o c c u r r i n g in the a l l u v i u m , but at the r a t e of w a t e r m o v e m e n t in the B - a q u i f e r it would t ake s e v e r a l h u n d r e d y e a r s for tha t w a t e r in the a r e a of the F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l to t r a v e l to th i s faul t .

26. The A - a q u i f e r h a s a v e l o c i t y a p p r o x i m a t e l y t en t i m e s tha t of the B - a q u i f e r . W a t e r f r o m the A - a q u i f e r i s be ing u s e d wi th in a d i s t a n c e of a p p r o x i m a t e l y four m i l e s f r o m P r o j e c t F i o B l a n c o . The h y d r o -logic r e p o r t shows tha t the flow v o l u m e in the A - a q u i f e r , the B - a q u i f e r and the a l l u v i u m aqu i f e r s y s t e m s is so g r e a t tha t the d i lu t ion f a c t o r would p r e v e n t any h a z a r d even if t r i t i a t e d w a t e r could s o m e h o w m i n g l e wi th the w a t e r s in t h e s e a q u i f e r s .

27. The w a t e r tha t wi l l be p r o d u c e d d u r i n g the t e s t i s con ­na te w a t e r o r f o s s i l w a t e r , i . e . , w a t e r d e p o s i t e d wi th the s e d i m e n t s or v e r y c l o s e to the s e d i m e n t s in w h i c h it i s c u r r e n t l y found, wh ich w a s l a id down 50 to 60 m i l l i o n y e a r s ago and h a s r e m a i n e d l o c a l i z e d in the s a n d s d u r i n g tha t t i m e .

28 . The w a t e r which wi l l be i n j ec t ed in to the F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l to the s a m e s t r a t i g r a p h i c l e v e l s f r o m which i t c a m e wi l l have no p r e s e n t o r f o r e s e e a b l e bene f i c i a l u s e and t h e r e is no r e a s o n a b l e p r o b a b i l i t y tha t such w a t e r , whi le a d v e r s e l y af fec ted , wi l l m i n g l e wi th o r be t r i b u t a r y to b e n e f i c i a l , u s e a b l e w a t e r s of the S ta te of C o l o r a d o .

29 . P e t i t i o n e r h a s p r o v e n beyond a r e a s o n a b l e doubt tha t in d i s p o s i n g of r a d i o a c t i v e w a t e r by in j ec t ion in to F a w n C r e e k G o v e r n m e n t N u m b e r 1 Wel l , a s d e t a i l e d in i t s " P r o j e c t Rio B lanco S u b s u r f a c e W a t e r D i s p o s a l A p p l i c a t i o n , " da t ed June 1 1 , 1973, a s a m e n d e d , tha t t h e r e wi l l be no po l lu t ion r e s u l t i n g t h e r e f r o m o r tha t the po l lu t ion , if any , wi l l be l i m i t e d to w a t e r s in a spec i f i ed l i m i t e d a r e a f r o m which t h e r e i s no r i s k of s ign i f i can t m i g r a t i o n and tha t the d i s p o s a l of the r a d i o a c t i v e w a t e r i s j u s t i f i ed by publ ic n e e d .

O c t o b e r 15, 1973 s / J o h n P h i l l i p L inn John P h i l l i p Linn , H e a r i n g Off icer

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-86.

A P P E N D I X D-1

B O T T O M H O L E P R E S S U R E AND T E M P E R A T U R E DATA, WITH CORRESPONDING F L O W R A T E S

FIRST PRODUCTION T E S T

N o v e m b e r 14, 1973 to N o v e m b e r 20, 1973

1973 Date

Nov. 14

Nov. 15

Nov. 16

T i m e

1245 1400 1440 1500 1550 1600 1700 1800 1900 2000 2100 2200 2200 2300 2400 0100 0200 0300 0400 0500 0600 0800 1000

1200 1300 1500 1700 1900 2100 2300 0100 0300 0500 0700

#33508 P r e s s .

p s i g

2 0 0 2 . 0

1 9 2 8 . 0 1 9 0 9 . 5 1894. 1 1878 .6 1 8 6 1 . 7 1 8 9 1 . 0 1 8 9 1 . 0 1 8 9 1 . 0 1 8 9 1 . 0 1 8 9 4 . 0 1 8 9 6 . 7 1 9 0 1 . 8 1 9 0 1 . 8 1 9 0 3 . 3 1 9 0 4 . 9 1 9 0 4 . 9

#33509 P r e s s .

p s i g

2 0 0 6 . 2

1 9 4 9 . 3 1 9 3 0 . 8 1 9 1 3 . 9 1 9 0 0 . 0 1 8 8 3 . 1 1 8 6 7 . 7 1898 . 5 1898 . 5 1898 . 5 1898 . 5 1 9 0 1 . 6 1 9 0 3 . 1 1 9 0 6 . 2 1 9 0 7 . 7 1907, 7

1 9 1 0 . 8 P u l l e d A m e r a d a

1 9 0 4 . 9 1904. 9 1 9 0 6 . 4 1 9 0 6 . 4 1 9 0 7 . 2 1 9 0 7 . 2 1 9 0 7 . 9 1 9 0 7 . 9 1 9 0 7 . 9 1 9 0 9 . 5 1 9 0 9 . 5

M i s r u n

— — -

— - _ . — _ . — ^ ~

#33510 T e m p .

°F

3 1 4 . 6 3 4 8 . 6 360. 9 372. 8 3 7 8 . 6 3 8 1 . 4 383, 5

340. 3 307. 2 288. 2 2 7 6 . 4 2 6 7 . 4 260. 5 255 . 1 2 4 9 . 9 242. 3 2 3 5 . 8

gauge 225 . 1

2 2 1 . 4

2 1 7 . 4

214. 8

2 1 3 . 0

F low M M S C F / D

0 . 0 5 .0

15. 0 0. 0

15. 0 15. 0 13. 1 1 5 . 8 1 5 . 9 1 5 . 6 15. 3 1 5 . 2

0 . 0 Shut in

-87 -

1973 Date

Nov. 16

Nov. 17

1973 Date

Nov. 17

Nov. 18

Nov. 19

Time

0900 1100 1130 1152 1215 1300 1500 1700 1900 2100 2300 0100 0300 0500 0700

#33508 P r e s s .

psig

1909.5 1909.5 1881.7 1895.6

1880.2 1858.6 1838.5 1861.9 1796.9 1778.4 1758.3 1739.8 1719.8 1701.3

#33509 P r e s s .

psig

Misrun — -

- • -

- — -

— - -

Pulled bomb off bottom 0700.

Time

1000 1100 1300 1500 1700 1900 2100 2300 0100 0300 0500 0700 0900 Elements 1200 1300 1500 1700 1900 2100 2300 0100 0300

#33508 P r e s s .

psig

1669.0 1664.0 1653.0 1639.0 1626.0 1612.0 1599.0 1585.0 1572.0 1559.0 1547.0 1535. 0 1522.0 out of hole 1503.8 1497.7 1483.8 1473.0 1460.7 1448.3 1434.4 1422.1 1409.8

#33509 P r e s s .

psig

1672.0 1664.0 1656.0 1641.0 1629.0 1615.0 1601.0 1588.0 1574.0 1562.0 1548.0 1535.0 1525.0

0900-1200 1509.3 1503.1 1490.8 1478.5 1466.2 1453.9 1440. 0 1429.3 1415.4

#33510 Temp.

O p

211.7

297.5

373.7 384.9 391.1 395.5 399.8 402.8 405. 9

#23585 Temp.

O F

415.0 414. 7 414.3 416.1 416.8 416.8 417.5 418.4 418.7 419.6 420.6 420.9

423.6 424. 5 425.8 425. 8 426.7 427.0 427.6 428 .5

Flow MMSCF/D

12. 0 Shut in

11. 1 11.1 10.3 10.0 10.0 10.0 10.0 10. 1 10.1 10. 1 10.1

Flow MMSCF/D

10.2 10.3

7 . 9 8 . 0 8 . 2 8 . 4 8 .2 8. 2 8 .2 8 .3 8 .2 8 .2 8 .0

8 .0 8 . 0 8 . 1 8 .0 8 . 0 8 . 0 8 . 0 8. 1 7 . 9

-88-

1973 Date

Nov. 19

T i m e

0500 0700 0900 0930

#33508 P r e s s ,

ps ig

1 3 9 7 . 4 1385. 1 1 3 7 2 . 7 1 3 7 1 . 2

#33509 P r e s s .

1 4 0 3 . 1 1392. 3 1378. 5 1 3 7 6 . 9

#23585 T e m p .

OF

4 2 9 . 1 4 2 9 . 7 4 3 0 . 4 430. 7

F low M M S C F / D

8 . 0 8 . 0 8 . 0 8 . 0

Ran ins truments back into hole - on bottom at 1310 hours T e m p , e l e m e n t #23585 with 3 hours Hi T e m p , c lock - one p r e s s , e l e m e n t with spare 72 hours - Hi temp, c lock -other e l e m e n t with bed c lock - A l l three 72 hours Hi temp, c locks malfunct ioned when r e t r i e v e d f rom hole - Ran ok to s u r f a c e - /Change in t emp, - Down hole t emp. 431 °F, Surface 31 ° F .

Nov. 19 1400 1 3 3 8 . 8 Misrun 4 3 0 . 7 8 . 0 8 . 0 8 . 0 8 . 0 8 . 0 8 . 0

Nov. 20 0200 1 2 6 4 . 8 - - - - - - 8 . 0 8 . 0 8 . 0 8 . 1

4 3 2 . 5 8 . 1 1007 1 2 3 3 . 9 - - . - - - 0 . 0

1400 1600 1800 2000 2200 2400 0200 0400 0600 0800 1007

1 3 3 8 . 8 1 3 2 6 . 5 1 3 1 4 . 1 1 3 0 1 . 8 1 2 9 0 . 9 1 2 7 7 . 1 1 2 6 4 . 8 1 2 5 2 . 4 1241 .6 1 2 2 9 . 3 1 2 1 8 . 5

Misrun Clock Stopped

. — -

~ - »

• - _

•

— _ -

w — —

-89 -

• 90-

APPENDIX D-2

BOTTOM HOLE PRESSURE AND TEMPERATURE DATA FIRST PRESSURE BUILD-UP PERIOD

November 20, 1973 to January 28, 1974

1973 Date

Nov. 20

Nov. 21

Time

1007 1007 1100 1200 1300 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800 1000 1200

#33508 P r e s s .

psig

1218.5 Flowing 1233.9 Shut-1237.0 1237.0 1238.5 1240.1 1243.2 1247.8 1250.9 1254.0 1258.6 1263.2 1266.3 1270.9 1274.0 1277.1 1280.2

-In

#33509 P r e s s . psig

Misrun Clock

Stopped

- - -- . *

— » -

#33510 Temp.

OF

— — -

-. — . _

- — • •

-•

- . -- • .

- — _

Star t off bottom at 1210 hours Nov. 21 with Amerada gauges Back on bottom at 5160 ft GL at 1400 Nov. 21 .

Nov. 21

Nov. 22

1400 1600 1800 2000 2200 2400 0200 0400 0600 0800 1000 1200 1400 1600 1800 2000 2200 2400

1279 1280 1283 1285 1288 1290 1291 1294 1296 1297 1300 1302 1303 1305 1306 1308 1310

1275 1277 1280 1283 1285 1286 1288 1291 1294 1295 1299 1300 1302 1305 1306 1308 1311 1311

Misrun

- _ _

— .

91

1973 Date

Nov. 23

Nov. 24

Nov. 25

Nov. 26

Time

0200 0400 0600 0800 1000 1600 2200 0400 1000 1600 2200 0400 1000 1600 2200 0400 1000

#33508 P r e s s .

psig

1311 1314 1316 1317 1320 1322 1327 1331 1334 1339 1340 1343 1348 1353 1354 1357 1360

#33509 P r e s s .

psig

1314 1315 1317 1319 1322 1325 1326 1331 1334 1337 1339 1342 1345 1349 1351 1354 1357

#33510 Temp.

°F . . .

232.0 232. 6 232.6 232.2 231. 8 231.2 230. 8 230.4 229.8 229.2 228.9 228. 5

Reran ins t ruments with 72-hour clocks Reran to 5l60 ft GL at 1130 Nov. 26.

Nov. 26

Nov. 27

Nov. 28

1200 1800 2200 0400 1000 1600

' 2200 0400 1000

1362 1364 1365 1368 1371 1373 1373 1376 1379

1365 223.0 1366 225.3 1368 225.5 1369 225.7 1372 225.7 1374 225.7 1374 225.5 1377 225.3 1380 225.3

Returned bombs to 5160 ft GL on bottom at Nov. 28 with 72 hour clocks.

Nov. 28

Nov. 29

1600 2200 0400 1000 1600 2200

Misrun Clock

Malfunction

1383 1385 1386 1388 1391 1391

222. 3 222 . 8 2 2 3 . 0 2 2 3 . 4 2 2 3 . 4

•92-

#33508 #33509 #33510 1973 P r e s s . P r e s s . Temp. Date Time psig psig °F

Nov. 30 0400 Misrun Clock 1392 223.4 1000 Malfunction 1394 223.4

Ins t ruments r e r a n to 5160 ft GL on Nov. 30 on bottom at 0930 with 72-hr clock. Replaced bad clock with one in t empera tu re sensor and replaced one in t empera tu re sensor with a non-high t empe ra tu r e clock.

1400 220.5 1400 221.2 1403 221.7 1406 221.9 1406 221.9 1408 222. 1 1411 222.3 1412 222.3 1412 222. 3 1414 222.3 1417 222.5

Reran ins t ruments with 72 hour clocks to 5160ft GL on bottom at 1200 Dec. 3.

Dec. 3 1600 1422 1425 218. 1 1428 219.2

Dec. 4 0400 1425 1429 219.7 1431 220.1 1432 220.3 1432 220.3

Dec. 5 0400 1431 1434 220.5 1435 220.5

Reran ins t ruments with 72 hour clocks to 5160 ft GL on bottom at 1130 Dec. 5.

Dec. 5 1600 1438 1437 217.4 1439 218.3

Dec. 6 0400 1439 1440 219.0 1443 219.7 1443 219.9 1445 220. 1

Nov. 30

Dec. 1

Dec. 2

Dec. 3

1600 2200 0400 1000 1600 2200 0400 1000 1600 2200 0400

1401 1402 1404 1407 1408 1410 1411 1414 1416 1418 1419

1600 2200 0400 1000 1600 2200 0400 1000

1422 1424 1425 1428 1430 1430 1431 1433

1600 2200 0400 1000 1600 2200

1438 1438 1439 1442 1444 1444

-93-

1973 Date

Dec. 7

Time

0400 1000

#33508 P r e s s .

psig .

1445 1447

#33509 P r e s s ,

psig _

1446 1448

#33510 Temp.

OF

220. 1 220.5

Reran ins t ruments to 5160 ft GL on bottom at 1115 Dec. 7. Replaced temp, element #33510 with t emp, e lement #175 92 to t e s t for long response t ime in #33510.

1973 Date

Dec. 7

Dec. 8

Dec. 9

Dec. 10

Time

1600 2200 0400 1000 1600 2200 0400 1000 1600 2200 0400 1000

#33508 P r e s s . psig _

1450 1451 1453 1455 1455 1456 1458 1459 1461 1461 1464 1464

#33509 P r e s s .

psig

1451 1451 1452 1454 1455 1455 1457 1457 1457 1459 1460 1460

#17592 Temp.

°F

195.7 195.5 195.4 195.2 195.0 195.0 194. 8 194.7 194.5 194.4 194.4 194. 1

Reran ins t ruments to 5l60 ft GL on bottom at 1115 Dec. 10.

1466 194.4 1468 194.4 1469 194.4 1471 194. 1 1471 194.0 1472 194.0 1474 194.0 1475 193.8

Reran ins t ruments to 5160 ft GL on bottom at 1200 Dec. 12.

1479 194.3 1480 194.1 1482 194.0 1483 193.7 1483 193.5 1485 193.4

Dec. 10

Dec. 11

Dec. 12

1600 2200 0400 1000 1600 2200 0400 1000

1464 1465 1467 1468 1468 1470

— -

Dec.

Dec.

12

13

1600 2200 0400 1000 1600 2200

1478 1479 1481 1482 1482 1484

-94-

1973 Date

•ec. 14

• ec. 15

lec. 16

• ec. 17

Time

0400 1000 1600 2200 0400 1000 1600 2200 0400 1000 1600 2200 0400 1000

#33508 Press. psig

1485 1485 1484 1485 1488 1490 1490 1493 1495 1496 1498 1499

1501

#33509 Press. psig

1486 1486 1486 1488 1489 1491 1491 1492 1494 1495 1495 1497 1497 1499

#17592 Temp.

O F

193.4 193.3

- - -

Lost bombs in hole. No data until Dec. 22. Ordered new elements f rom Geophysical Resea rch Corporat ion. Otis to r e t r i eve old tools .

1973 Date

Dec. 22

Dec. 23

Dec. 24

Dec. 25

Time

1600 2200 0400 1000 1600 2200 0400 1000 1600 2200 0400 1000

#26170N Press. psig

1532 1532 1533 1535 1535 1535 1536 1538 1538 1538 1539 1539

#14379 Temp. O F

193. 193. 193. 193. 192. 192. 192.

191. 191. 191. 191.

7 7 7 3 8 8 4 9 5 5 0

190. 6

Reran ins t ruments to 5160 ft GL. On bottom at 1130 Dec. 26.

Dec. 26 Dec. 27

Dec. 28

1600 0400 1600 0400 1600

1545 1546 1546 1549 1549

192.4 194. 6 195. 1 195. 1 195. 1

-95-

1973-74 Date

Dec. 29

Time

0400

#26170N P r e s s .

psig

1552

#14379 Temp.

°F

195.5

Reran ins t ruments to 5160ft GL. On bottom at 1330 on Dec. 29.

Dec. 29 Dec. 30

Dec. 31

1600 0400 1600 0400 1600

1555 155b 1558 1559 1561

Misrun Clock Malfunction

1974

Jan. 1 0400 1562

Otis on location. Did not r e run ins t ruments at this t ime .

Jan. 5

Jan. 6

Jan. 7

0400 1600 0400 1600 0400 1200

1580 1581 1584 1584 1587 1588

195.5 196.4 197. 3 197. 3 197.3 197. 8

Change from Mountain Standard Time to Mountain Daylight Time on Jan. 7. Reran ins t ruments to 5160 ft GL. On bottom at 1330 Jan. 7.

Jan. 7 Jan. 8

Jan. 9

1600 0400 1600 0400 1200

1588 1590 1591 1594 1595

194.6 197.8 198.7 199.6 200. 0

Reran ins t ruments to 5160 ft GL. On bottom at 1430 Jan. 9.

Jan. 9 Jan. 10

Jan. 11

1600 0400 1600 0400

1595 1598 1600 1601

194.2 196.9 197. 3 197. 8

Reran ins t ruments to 5l60ft GL. On bottom at 1500 Jan. 11. Changed packing on stuffing box. Pulled off approximately 210 ft of wire on wirel ine unit.

-96 -

1974 Date

Jan. 11 Jan. 12

Jan. 13

Jan. 14

Jan. Jan.

Time

1600 0400 1600 0400 1600 0400

#26170N P r e s s .

psig

1603 1606 1606 1607 1607 1610

#14379 Temp.

OF

197. 8 199.6 199.6 199.6 198.7 198.7

Installed tool t r ap between lubr ica tor and BOP. Reran ins t ruments to 5160ft GL. On bottom at 1545 Jan. 14.

Jan. 14 Jan. 15

Jan. 16

1600 0400 1600 0400

1608 1611 1613 1614

196.0 200.0 200. 6 201. 0

Reran ins t ruments to 5160 ft GL. On bottom at 1445 Jan. 16.

16 17

Jan. 18

]

Jan. 18 Jan. 19

Jan. 20

Jan. 21

1600 0400 1600 0400

1614 1616 1617 1619

196.4 198. 7 200. 0 200. 3

Reran ins t ruments to 5160 ft GL. On bottom at 1330 Jan. 18.

1600 0400 1600 0400 1600 0400

1621 1623 1623 1624 1624 1626

195. 5 197. 3 197. 8 197.8 197. 8 198.7

Jan. Jan.

Reran ins t ruments to 5160 ft GL. On bottom at 1430 Jan. 21.

21 22

Jan. 23

1600 0400 1600 0400

1629 1630 1632 1633

Reran t empera tu re element #14379, p r e s s u r e element #26170N, and p r e s s u r e element #34225 with 3-hour clocks for survey.

194.6 197. 8 198.7 199.6

-97-

1974 Date

Jan. 23

Time

1523 1546 1553 1558 1604 1610 1620 1625 1630 1635 1645 1650

Depth F r o m

G L

5160 5215 5315 5415 5515 5565 5615 5635 5655 5675 5685 5695

Minutes Stop

Time

15 5 5 5 5

10 5 5 5

10 5 5

#26170N P r e s s . psig

1633 1636 1639 1643 1646 1649

*1645 *1636 *1642 *1650 *1652 *1653

#34225 P r e s s . psi^

1632 1634 1636 1642 1645 1647 1652 1652 1652 1658 1659 1660

#14379 Temp.

°F

192.8 195.5 197.3 199.1 201.6 209.0 320.7 389.9 Off Scale

Jan. 24

Jan. 24

*Tempera ture affected.

Reran ins t ruments with 3-hour clocks. Ran S-hour bottom hole p r e s s u r e and #23585 (400°F - 650°F).

tempe

1400 1410 1421 1432 1443 1453 1504 1520 1530 1540

ra tu re survey.

5160 5200 5400 5600 5625 5650 5675 5685 5695 5705

Rat

10 10 10 10 10 10 15 10 10

5

New tempera tu re element

1636 1637 1645 1649 *1640 *1649 *1655 *1655 *1656 *1656

1630 1632 1640 1645 1648 1650 1658 1658 1658 1658

404.8 415.5 415.9 415.5 415.5

Jan. 25

Tagged TD at 5707 ft GL.

*Tempera ture affected.

Reran t empera tu re element #34226 (150 O F - 400 °F). P r e s s u r e element #33508 (3000 psi) , p r e s s u r e element #34225 (3000 psi) , with 72-hour clocks to 5l60 ft GL. On bottom at 1330.

-98-

1974 Date

Jan. 25 Jan. 26

Jan. 27

Jan. 27

#33508 P r e s s .

Time psig

0400 1638 0400 1640 1600 1640 0400 1641

Reran ins t ruments with new hi

#34225 P r e s s .

psig

1640 1641 1640 1639

.gh range te

#34226 Temp.

°F

189.7 193.5 195.4 196.5

mpe ra ture element #23585 (400OF - 650°F) to GL depth of 5650 ft for 3 hour s , at 1200 hour s , 5700 ft GL for 3 hours at 1500 then back to 5160 ft GL at 1800. Will pull again for r ead ­ings Jan. 28 a. m.

1974 Date

Jan. 27

Jan. 28

Time

1500 (5650' GL) 1800

(5700' GL) 0400

(5160' GL)

#33508 P r e s s . psig

1670

1671

1645

#34225 P r e s s .

psig

1660

1661

1630

#23585 Temp.

°F

408.9

414. 1

Reran same ins t ruments to 5160 ft GL. On bottom at 1030 Jan. 28.

Jan. 28 1200 1300 1400 1500

1652 1652 1652 1652

1654 1654 1654 1654

-99-

-100-

APPENDIX D-3

BOTTOM HOLE PRESSURE AND TEMPERATURE DATA WITH CORRESPONDING FLOW RATES

SECOND PRODUCTION TEST January 28 - February 15, 1974

1974 Date

Jan. 28

Jan. 29

Time

1200 1300 1400 1500 1535 1600 1625 1625 1700 1800 1900 2000 2100 2200 2300 2400 0100 0200 0300 0400 0500 0600 0700 0800 1000 1100 1200 1300 1400 1500 1505 1510 1600 1700 1800 1900

#33508 P r e s s . psig

1652 1652 1652 1652

Startup 1632 1631 1636 1625 1619 1614 1608 1600 1594 1588 1582 1575 1568 1561 1557 1550 1544 1538 1532

- - -

1514.6 1509.9 1502.1 1497.4 1491.2 1488.0 1492.7 1484. 9 1478.7 1474.0 1467.8

#34225 P r e s s . psig

1654 1654 1654 1654

1634 1634 1638 1632 1626 1619 1611 1605 1599 1592 1586 1579 1573 1565 1560 1552 1547 1539 1535

1522.7 1516.3 1509.9 1503.5 1497.1 1495.5 1498.7 1492.3 1485.9 1479.5 1473.1

#23585 Temp.

O F

Below scale

401.9 403.7 405.6 407 .4 410. 0 411. 1 412.6 414. 1 414. 8 415. 5 416. 3 417. 0 417.8 418. 1 418. 5 419.4 425. 3 425.3 425.6 425.9 426. 3

417. 8 426. 3 426.6 426.9 427. 5

Flow MMSCF/D

. . _

6 . 5

6 . 0 0. 0 6 . 8 6 . 2 6 . 1 6 . 8 6 . 0 6 . 2 6 . 0 6 . 3 6 . 2 6 . 1 6. 0 6 . 0 5 . 8 5 . 7 5. 8 5 . 9 6 . 1 6 . 2 6 . 2 6 . 4 6 . 4 6 . 3

6 . 3 6 . 4 6 . 2 6 . 2

- 1 0 1 -

1974 Date

Jan.

Jan.

Jan.

29

30

31

Time

2000 2100 2200 2300 2400 0100 0200 0300

.0400 0500 0600 0700 0800 1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

#33508 P r e s s . psig

1461.5 1455.3 1449.1 1442.8 1436.6 1431.9 1425.7 1419.4 1414.7 1408.5 1403.8 1397.6 1389.8 1377.2

- - -

_ __ 1257.6

#34225 #23585 Press. psig

Feb. 1

1468. 3 1460.3 1455. 5 1449. 1 1447. 7 1437.9 1429. 9 1425.2 1420.4 1412.4 1407.6 1401.2 1393. 2 1374. 2

Temp. °F

427.8 428.4 428.7 429.7 430. 0 430. 0 430.6 430. 6 431.2 431. 5 431, 5 431.8 432.8 436.7 436.7 436. 7 436.9 437.2 437.5 437.7 437. 7 438. 0 438. 3 438.5

Flow MMSCF/D

6 . 2 6 . 2 6. 2 6 . 1 6 . 1 6 . 1 6 . 1 6 . 0 6 . 0 5 . 9 5 .9 5 .9 6 . 5 6 . 3 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 6 . 2 1268. 1

Re - r an ins t ruments to 5160 ft GL. Reached that depth at 1130. Neither clock in p r e s s , ins t ruments ran . Replaced clock in #34225 with 3-hour high t empera tu re clock and replaced clock in #33508 with 72-hour high t empera tu re clock. 3-hour clock loaded at 1050.

1200 1300 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

1232 1229 1221 3-hour clock only

_ - _

* — -

1222 1209 1197 1186 1173 1162 1152 1141 1128 1117

442. 5 442. 5 442.8 443. 0 443.3 443,6 443.8 444. 1 444 .4 444.6

6 . 2 6 . 1 6 . 1 6 . 1 6 . 3 6 . 3

6. 0 6 . 0 5 .9 6 . 0 6 . 3

R e - r a n ins t ruments to 5160 ft GL. Used 72-hour clocks on all ins t ruments . Reached 5160 ft GL at 1115, Feb. 1. Well shut in 0945 to 1153, Feb. 1.

-102-

1974 Date

Feb. 1

Feb . 2

Time

1400 1600 1700 1800 2000 2125 2125 2400 0200 0400 0600 0800

#33508 P r e s s . psig .

1119 1116

1109 1101 1090.4 1098.3 Startup 1086 1076 1070 1062

#34225 P r e s s . psig

1118 1114

1107 1099 1086.2 1094.2

1081 1075 1067 1059

#23585 Temp.

O F

442.5 443. 3

443.8 444.4

444.6

444. 1 444.6 445.2 445.4

Flow MMSCF/D

4 . 3 4 . 2

4 . 2 4 . 2 0 . 0 4 . 2 4 . 2 4 . 0 3 . 8 4 .2*

R e - r a n ins t ruments to 5160' GL. On bottom at 1000, Feb . 2. Downhole flow ra te at shut-Ln approximately 4. 2 MMSCF/D gas + 3. 4 MMSCF water vapor . Well shut in 2125 to 2400, Feb . 1. ^Starting at 0800, Feb . 2, flow data a r e averages of the previous 4 hours .

Preceding #33508 #34225 #23585 4 -h r . Ave.

1974 P r e s s . P r e s s , Temp. Flow Date

Feb. 3

Time

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

psig. .

1051. 1 1043.2 1035.4 1027. 5 1019.6 1011.8 1005. 5

997.6 989.7 981.9 974.0

psig. .

1049.8 1041. 7 1035. 3 1025,6 1019.2 1011. 1 1003. 1

995.0 987.0 978.9 972. 5

O F

449.1 449. 1 449.1 449.1 448.7 448. 2 448.2 448.2 448.2 448.2 448.0

MMSCF/D

4 . 4 — _ — 4 . 4

4 . 4

4 . 4

4 . 4

4 . 4

R e - r a n ins t ruments to 5160 ft GL. Reached depth at 1030, Feb . 3. Exchanged 72-hour clock in #34225 with 24-hour clock.

1200 1400 1600 1800 2000 2200 2400

9 5 5 . 1 9 4 5 . 3 9 3 7 . 8 9 2 9 . 9 9 2 2 . 1 9 1 4 . 2 9 0 6 . 3

9 5 8 . 0 9 5 0 . 0 9 4 1 . 9 9 3 3 . 9 925. 8 917 .8 9 0 9 . 7

452 . 5 452 . 3 4 5 1 . 8 4 5 1 . 6 4 5 1 . 4 4 5 1 . 1

4 5 0 . 9

4 . 3

4 . 5

4 . 4

4 . 4

-103-

1974 Date

Feb . 4

Time

0200 0400 0600 0800

#33508 P r e s s .

p s i g . .

900.0 892.2 884.3 874.9

#34225 P r e s s . psig.

901.7 893.6 885.6 875.9

#24585 Temp.

O F

450.7 450.7 450.5 449.8

Preceding 4 - h r . Ave.

Flow MMSCF/D

4 . 2 _ __ 4 . 2

Feb . 5

Feb. 6

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1000 Feb. 4. Exchanged bad 72-hour clock in t empera tu re element with 24-hour clock.

1000 1050 1050 1200 1300 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

868.8 870.4 881.5 886.2

- _-864.1 857.7 849.8 841.9 837.1 829.2 822.9 815.0 808. 7 800.8

870.5 881.9 883. 5

867. 3 859.2 851. 1 844.6 838.2 831. 7 822.0 815. 5 807.4 801.0

450.0 450.2 450.2 450.2 450.2 450.2 450.0 449. 8 449.8 449.6

0 . 0

4 . 6

4 . 6

4 . 5

4 . 1 -

4 . 0

4 . 0

Re- ran ins t ruments to 5160 ft GL. On bottom at 1000 Feb . 5. Well shut in 0945 to 0955 and 1050 to 1210.

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

7 8 6 . 5 778 .6 7 7 2 . 3

7 6 5 . 9 7 6 1 . 2 7 5 3 . 3 7 4 8 . 5 7 4 2 . 2 7 3 5 , 9 7 2 8 . 0 721 .6

791 .3 784 .8 7 7 8 , 3 7 7 1 . 8 7 6 5 . 4 7 5 8 . 9 7 5 2 . 4 745 .9 7 3 7 . 8 7 3 1 . 4 7 2 4 . 9

450 . 7 4 5 0 . 7 4 5 0 . 7 4 5 0 . 5 4 5 0 . 5 4 5 0 . 2 4 5 0 . 0 4 5 0 . 0 4 4 9 . 8 4 4 9 . 6 449 . 3

4 , 0

3 .9

3 .8

3 ,8

3 .7

3 .7

R e - r a n ins t ruments to 5160 ft GL. Reached depth at 1030, Feb. 6. Replaced bad clock in #23585 with 72-hour clock.

- 1 0 4 -

1974 Date

Feb. 6

Feb. 7

Time

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

#33508 P r e s s . psig.

Misrun — — -_ — — — _ _ . ~ —

^ * — — - »

#34225 P r e s s . psig.

712.2 708.9 704. 1 697.6 695. 9 694.3 689,4 682.9 679.7 676.4 671.5

#24585 Temp.

446. 8 446, 8 446.8 446.2 445. 7 446. 0 445. 7 445.4 445.4 445.4 445. 2

Preceding 4-hr. Ave.

Flow MMSCF/D

3.6

3.6

3. 1

3.0

2.9

2.9

R e - r a n ins t ruments to 5160 ft GL. Feb . 7.

Reached depth at 1020,

Feb . 8

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

660.5 655.7 652.5 647.7 644.6 639.8 636.6 631.8 628.6 625.5 620.7

666.7 663.4 660.2 655. 3 650.4 647. 2 642. 3 637.4 632. 5 627.6 624.4

447. 3 447. 3 447 .3 447.0 446.5 446. 5 446.2 446.0 445. 7 445.7 445.4

2 . 8

2 . 9 - - — 2 . 8 - — _ 2 . 8 _ « _ 2 . 7

1 ^

2 . 7

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1045, Feb. 8.

Feb, 9

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

623.9 620.7 619.1 615.9 614.3 612.7 609.5 606.4 603.2 600.0 596.8

622.8 619.5 617.9 616.3 614.6 611.4 608.1 604.9 603.2 601.6 598.4

447.3 446.8 446. 0 445,7 445,4 445. 7 445.2 445.4 445.4 445.4 445.4

2 . 1

2 . 2 — — » 2 . 2 — » — 2 . 1

2 . 1

2 . 1

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1115, Feb. 9.

-105-

1974 Date

Feb. 9

Feb . 10

Time

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

#33508 P r e s s . psig

590.5 588.9 587.3 584.1 580.9 579.3 576.1 569.8 568.2 565.0 563.4

#34225 P r e s s . psig

592.0 590.2 587.0 585.4 582.1 580. 5 577.2 572.4 569.1 565.8 564. 2

#24585 Temp.

O F

444.4 445.7 445.4 445.2 445.7 445.7 445.2 444.9 444. 9 444.4 444.4

Preceding 4 - h r . Ave.

Flow MMSCF/D

2 . 2

2 . 2

2 . 2

2 . 2

2 . 1

2. 1

R e - r a n ins t ruments to 5160 ft GL, Reached bottom at 1015, Feb, 10.

. 11

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

552.3 549.1 547.5 544.3 541.1 537.9 534.7 533. 2 530.0 525.2 522.0

Misrun 444.4 444. 1 442.8 443. 0 442. 5 442.5 442.2 442. 0 441.7 441.4 441. 2

2 . 4

2 . 3

2 . 3

2 . 3

2 . 2

2 . 2

R e - r a n ins t ruments to 5160 ft GL. Replaced bad clock in #34225.

On bottom at 1030, Feb. 11,

Feb. 12

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

520.4 517.3 514. 1 512. 5 509.3 506.1 502.9 501.3 498.1 495.0 493.4

520.3 517.1 515.4 512.2 510.6 507.3 505.7 502.4 500.8 499.2 497.6

442.8 443.0 442.5 442.2 442.0 442.0 441,7 441.4 441.4 441.2 442.2

2 . 1

2 . 1

2 . 1

2. 0

2 . 0

2 . 0

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1045, Feb. 12.

-106-

1974 Date

Feb.

Feb .

12

13

Time

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

#33508 P r e s s .

psig ,

487.1 485.5 483.9 480.7 479.1 477. 5 475.9 472.7 471. 1 469.5 467.9

#34225 P r e s s . psig

488.6 487.0 488,4 483,8 482.2 480. 5 477.3 475.7 474. 1 472. 5 472.5

#24585 Temp.

°F

440. 1 439.9 439.9 439.6 439.6 439.6 439.3 439.3 439. 1 439.1

Preceding 4 -h r . Ave.

Flow MMSCF/D

2. 0

1.9

1.9

1.8

1.8

1.7

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1000, Fe . 13.

Feb . 14

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800

466.3 464.7 463.1 459.9 458.3 456.7 455. 1 453. 5 450.4 448.8 447.2

469.2 467.6 464,4 464.4 462. 7 459.5 457,9 456. 3 454.6 453.0 449. 8

439.9 439.6 438. 8 438.8 438.8 438.5 438.3 438. 3 438.0 437.7 437.5

1.7

1.7

1. 7

1.6

1.6

1.6

R e - r a n ins t ruments to 5160 ft GL. On bottom at 1045, Feb. 14.

Feb . 15

1200 1400 1600 1800 2000 2200 2400 0200 0400 0600 0800 0820 0820

447.2 445.6 444,0

Clock failed _ _ _

- - -

- _ -- _-

443.3 443.3 441.7 440.1 438.5 436.9 436.9 435.2 432.0 430.4 430.4 430,4 436.9

439.6 439.9 439.6 439.6 439.3 439.1 438,8 438.5 438.5 438.3 438.0

1.6

1. 5

1. 5

1.5

1.5

1.4

0 . 0

Well shut in 0820 for long-ternn buildup.

-107-

-108-

APPENDIX D-4

BOTTOM HOLE PRESSURE AND TEMPERATURE DATA SECOND PRESSURE BUILD-UP PERIOD

F e b r u a r y 15, 1974 to June 24, 1975

(Tempera ture data, Feb rua ry 15 to March 11, 1974, only)

1974 Date

Feb . 15

Feb . 16

Time

0820 1200 1400 1600 1800 2000 2200 2400 0200 0400 0800 1000

#33508 P r e s s . psig .

Instant . Shut in 445.6 448,8 450.4 452.0 455.2 458. 3 458.3 461.5 464.7 466. 3 467.9

#34225 P r e s s .

psig

436.9 443. 3 446.6 449,8 451.4 454.7 456.3 459.5 461. 1 462.7 464.4 467. 6

#33510 Temp.

O F

356.6 340.7 329.6 321.6 315.6 309.5 305.6 302.2 298.5 295.5 293.2

Tempera tu re e lement range , 180-400°F. Ins t ruments on bottom, 5160 ft GL at 1110, Feb. 15. Reran ins t ruments to 5 l60 ' GL. On bottom at 1245, Feb . 16.

Feb . 16

Feb . 17

1400 1600 1800 2000 2200 2400 0200 0400 0600 0800 1000 1200

4 6 4 . 7 4 6 7 . 9 4 7 1 . 1 4 7 1 . 1 4 7 4 . 3

4 7 5 . 9 4 7 7 . 5

479. 1 4 8 2 . 3 4 8 3 . 9 4 8 5 . 5 487. 1

4 7 5 . 7 477. 3

4 7 8 . 9 4 8 0 . 5 4 8 3 . 8 4 8 5 . 4 4 8 7 . 0 4 8 8 . 6 4 9 0 . 3 4 9 1 . 9 4 9 3 . 5 4 9 3 . 5

2 8 9 . 2 2 8 7 . 6

2 8 5 . 9 2 8 3 . 9 2 8 2 . 3 2 8 0 . 7 2 7 9 . 2

2 7 7 . 9 2 7 6 . 5 2 7 5 . 4 2 7 4 . 2 2 7 3 . 0

Reran ins t ruments to 5160 ft GL. On bottom at 1330, Feb . 17. #33508 has 24-hour clock, others 72-hour clock.

-109-

1974 Date

Feb . 17

Feb. 18

Feb . 19

Time

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800

#33508 P r e s s . psig

496.7 498.3 503. 1 504.7 506.2 507.8

#34225 P r e s s . psig

493.5 496,7 500.0 501.6 504.8 508. 1 509.7 512.9 516. 1 517.8 519.4

#33510 Temp.

O F

272. 3 270. 1 268.0 266. 1 264.5 263.0 261.4 260.0 258.8 257.5 256, 1

Reran ins t ruments , all with 72-hour clocks, to 5160 ft GL. On bottom at 1115, Feb . 19.

Feb . 19

Feb . 20

Feb . 21

Feb . 22

1200 1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800

5 1 9 . 0 5 2 0 , 6 5 2 3 . 8 5 2 7 . 0 5 2 8 . 6 5 3 0 . 2 5 3 1 . 8 5 3 5 . 0 5 3 6 . 6 5 3 8 . 2 5 3 9 . 8 541.4 5 4 3 . 0 5 4 6 . 2 5 4 7 . 8 5 4 9 . 4

5 2 2 . 6 5 2 4 . 2 5 2 7 . 6 5 3 0 . 7 532. 3

5 3 3 . 9 5 3 5 , 6 5 3 8 , 8 5 4 0 . 4 5 4 2 . 0 5 4 3 . 6 545. 3

5 4 6 . 9 548 .5 550 . 1 5 5 1 . 7 5 5 1 . 7 5 5 5 . 0

254. 1

2 5 2 , 9 2 5 2 . 0 2 5 1 . 0 2 5 0 . 3 2 4 9 . 7 2 4 8 . 8 2 4 8 . 2 2 4 7 . 4 2 4 6 . 9 2 4 6 . 3 2 4 5 . 7 2 4 5 . 2 2 4 4 . 6 2 4 4 . 2 243 .5

2 4 2 . 9

Reran ins t ruments to 5160 ft GL. On bottom at 1330, Feb . 22

Feb . 22

Feb . 23

1600 2000 2400 0400 0800

5 5 5 . 6 5 5 7 . 2 5 6 0 . 4

5 6 1 . 9 5 6 3 . 6

5 6 4 . 2 567 .5

569. 1 5 7 0 . 7

5 7 3 . 9

236. 8

2 3 5 , 9 2 3 5 . 4 235. 1

2 3 4 . 9

-110-

1974 Date

Feb . 23

Feb . 24

Feb . 25

Time

1200 1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800

#33508 P r e s s . psig

565.2 566,7 568.3 569.9 573. 1 573. 1 574.7 576. 3 577.9 581. 1 582.7

#34225 P r e s s . psig

575.6 577.2 578.9 580.5 582. 1 583.7 583,7 585.4 587.0 588.6 590.2 591.9

#33510 Temp.

OF

234.4 234.2 233.7 233.4 232.9 232.5 232.2 232.0 231.7 231.2 231.0 230.7

Reran ins t ruments to 5160ft GL. On bottom at 1215, Feb . 25,

Feb . 25

Feb . 26

Feb . 27

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200

5 9 2 . 2 5 9 5 . 4 5 9 7 . 0 5 9 8 . 6 6 0 0 . 2 6 0 1 . 8 6 0 3 . 4 6 0 5 . 0 606. 6 608. 1 6 0 9 . 7 6 1 1 . 3

5 9 6 . 7 6 0 0 . 0 6 0 1 . 6 6 0 4 . 9 6 0 4 . 9 606 .5 6 0 9 . 8 6 1 1 . 4 6 1 3 . 0 6 1 3 . 0 6 1 4 . 6 6 1 4 . 6

2 3 1 . 2 2 3 0 . 7 2 3 0 . 5 2 3 0 . 2 2 3 0 . 0 2 2 9 . 7 2 2 9 . 4 2 2 9 . 4

229. 1 229. 1 2 2 8 . 9 2 2 8 . 6

Reran ins t ruments to 51 60 ft GL. On bottom at 1300, F e b . 27. Changed clock on #33508.

Feb . 27

Feb . 28

Mar. 1

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800

Misrun 614.6 617.9 619.5 621. 1 622.8 624.4 626.0 627.6 629.3 629.3 630.9

226.9 226.9 227.2 227.5 227.5 227.5 227.5 227.5 227.2 226.9 226.9

-111-

Reran ins t ruments to 5160 ft GL. On bottom at 1230, Mar . I, Replaced t empera tu re element #35510 with element #34226 150-400°F. Replaced bad clock in #33508.

1974 Date

Mar . 1

Mar . 2

Mar . 3

Mar. 4

Time

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800

#33508 P r e s s .

psig

632.0 635.2 636.8 638.4 638.4 640.0 641.6 644.8 646.4 646.4 647.9 649.5 651. 1 652.7 654.3 655.9 655.9

#34225 P r e s s .

psig

634. 1 635.8 637.4 639.0 640.6 642.3 643.9 643.9 645.5 647. 1 647. 1 648.8 648.8 650.4 652.0 652.0 655.3

#34226 Temp.

OF

216.0 217.3 217.8 218.3 218.5 218.8 219.3 219.5 219.5 219.8 219.8 220.0 220.0 220.3

Reran ins t ruments to 5160 ft GL. On bottom at 1400, Mar . 4.

Mar . 4

Mar. 5

Mar . 6

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200 1600 2000 2400

655.9 657.5 659.1 660.7 662. 3 662.3 663.9 665.5 667.0 667.0 668.6 668.6 671.8 671.8 673.4

655.3 656.9 660.2 661.8 663.4 665.0 666.7 668.3 669.9 669.9 671.5 671.5 673.2 676.4 676.4

214.5 214.5 215.3 216.3 216.8 217.0 217.0 217.5 217.8 218.0 217.8 218.0 218.0 218.3 218.5

-112-

1974 Date

Mar . 7

Time

0400 0800 1200

#33508 Press, psig

675.0

#34225 P r e s s .

psig

678.0 678.0 679.7

#34226 Temp.

218.8 218.8 218.8

Reran ins t ruments to 5160 ft GL. On bottom at 1315, Mar . 7.

Mar. 7

Mar. 8

Mar. 9

Mar. 10

1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200 1600 2000 2400 0400 0800 1200

679.8 681.4 683.0 684.6 684.6 686.2 687.7 689.3 690.9 690.9 690.9 692.5 694.1 695.7 697.3 697.3

682.9 684.5 686.2 687.8 689.4 689.4 691. 1 692.7 692.7 694.3 694.3 695.5 695.5 697.6 697.6 699.2 699.2 700.8

209.2 211.0 211.9 212.7 213.3 213.3 214.2 214.5 214.5 215.0 215.0 215.0 215.5 215.8 215.8 216.0 216.0 216.0

Reran ins t ruments with 24-hour clocks to 5l60 ft GL. On bottom at 1515, Mar . 10.

Mar.

Mar.

10

11

1600 2000 2400 0400 0800 1200

Misrun 699.2 704. 1 705.7 707.3 707.3 708.9

203.4 206.3 207.5 208. 1 209.0 209.5

Pulled down lubr icator and str ipped .092 s ta in less wire f rom wire line unit in p repara t ion for instal lat ion of Sperry Sun equipment on Mar . 12.

-113-

1974 Date

Mar. 13

Mar. 14

Time

1435 2400 0800 1600

BHP psia

713. 6 718. 7 720. 6 723. 9

Sperry Sun dow^nhole chamber is located at 5160 ft GL. Gas Column inside of tube is hel ium. In calculating bottom-hole ps ia , surface psig was cor rec ted to psia by using average ba rome t r i c p r e s s u r e of 11. 5 psia p r io r to applying cor rec t ion factor of 1.02265 for m a s s per unit a r ea of gas column.

Data from 2400, Mar . 14 to 0800, Mar . 18 omitted because of a smal l leak which was found and repa i red on Mar . 18 as noted below.

Mar . 18. Checked Sper ry Sun equip­ment and found p r e s s u r e readout at 681 surface psig, a drop from data on Mar . 15. Checked all fittings with soap solu­tion and found smal l leak on 3-way valve. Repaired leak and repurged sys tem with helium.

Mar. 18

Mar. 19

Mar. 20

Mar. 21

1600 2400 0800 1600 2400 0800 1600 2400 0800

743.4 746.0 747. 6 750. 7 750.5 752. 3 755. 6 755. 8 757. 1

Reset t ime mechan i sm on Sperry Sun equipment at 1300, Mar . 21.

Mar. 21

Mar. 22

1600 2400 0800 1600 2400

760. 9 760. 6 762. 1 764. 7 767. 0

1974 Dati

Mar.

Mar .

Mar .

Mar.

Mar .

Mar .

e

23

24

25

26

27

28

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

BHP ps i a

768. 7 771. 5 771.5 772. 9 775. 5 775. 9 777. 9 781, 3 780. 7 782. 5 785. 5 785. 7 786. 9 790. 7 789. 8 791.7

Reset p r e s s u r e and time mechan i sm on Sperry Sun equipment at 1600, Mar . 28.

Mar . 28

Mar. 29

Mar, 30

Mar. 31

Apri l 1

Apri l 2

April 3

April 4

1600 2400 0800 1600 2400 0800 1600 2400 0630 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

794. 3 794.6 796.4 799. 8 799. 8 801. 0 803. 8 804. 6 805. 1 807. 7 808.4 809. 8 812.4 813. 1 814. 7 816. 8 817. 7 819.2 821. 4 322. 1 823. 4

Reset p r e s s u r e and t ime mechan i sm on Sper ry Sun equipment at 1500, Apri 4. Recorder malfunction at 0800, Mar . «

-114-

1974 Date

Apri l 4

April 5

April 6

Apri l 7

Apri l 8

Apri l 9

April 10

Apri l 11

Reset p r e s s u r e on Sper ry Sun e April 11.

April 11

Apri l 12

April 13

April 14

April 15

April 16

April 17

Time

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

and t ime iquipment

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

BHP ps i a

826.5 826.9 828. 9 831.7 832.2 833. 7 837. 6 838.5 840.0 842.4 842.4 844. 1 847. 8 850.0 851. 3 854.6 854.2 855. 8 857. 1 858.0 859.3

mechan i sm at 1000,

860. 8 862.0 863.0 865.0 865.5 866.8 869.0 869.4 870.6 873. 3 873.0 874. 7 879.4 876.5 878.4 882.5 878. 5 879.4 886.0 881. 3

1974 Date

Apr i l 18

Time

0800

Rese t p r e s s u r e and t ime on Sper ry Sun Apri l 18.

Apri l 18

Apri l 19

Apri l 20

Apri l 21

Apri l 22

Apri l 23

Apri l 24

Apri l 25

equipment

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600

Rese t p r e s s u r e and t ime on Sper ry Sun April 25.

Apri l 25 Apri l 26

Apri l 27

Apri l 28

Apri l 29

equipment

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

BHP ps ia

879.9

mechanisn at 1500,

889.5 885. 3 885. 1 889.9 885. 9 884.0 891.0 890.0 890.5 898. 1 893.6 892. 1 904.4 898.4 896.9 907.3 902.7 903.5 909.9 908. 1 908.2 914.2

mechanisn at 1830,

911. 1 908.6 914. 8 912.2 910.4 917.9 913.7 911.7 923.5 918.8 915. 6 925. 7 919.4

-115-

1974 Da te

A p r i l 30

May 1

May 2

May 3

May 4

May 5

May 6

May 7

May 8

May 9

May 10

May 11

May 12

May 13

May 14

T i m e

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

B H P p s i a

918. 2 932. 1 925 . 7 925 . 9 934. 5 9 3 1 . 0 934. 2 935 . 5 9 3 1 . 2 92^ . 5 940. b 936. 8 933 . 6 944. 1 9 3 9 . 2 935 . 8 9 4 6 . 7 943 . 7 942. 3 949. 8 947. 6 9 4 5 . 7 955, 5 9 5 1 . 0 9 4 9 . 4 958. 5 9 5 4 . 4 95 3. 8 9 6 1 . 6 958. 3 957, 5 963 . 2 958, 6 955 . 1 965 . 3 9 6 1 . 2 9 5 8 . 4 968. 4 966. H 964. 6 970. 3 966. 2 963 . 2 9 7 3 . 4 9 6 9 . 4

1974 Da te

May 15

May 16

At 1400, i n s t r u m e

T i m e

0800 1600 2400 0800 1400 1600

May 16, c lose nt tubi

connec t ed Surfa P M S - 4 . 9 9 8 3 . 4 p

!d va l ng a t r e e l am ice R e c o r d e r

I n s t r u m e n t z e r o e d si or m i n u s 16

I n s t a l l e d Su r f ace Reco r P M S - 3 . P u r g e P r e s s u r e r e a d -ca ted c o m p l e t e p u r g e d . R e s e t

d t^vice

B H P p s i a

970. 6 9 7 8 . 0 974. 6 P70. 7 9 7 9 . 9

1002. 8

ve in d d i s -S ,N . in

. 6 p s i . •der S . N . wi th h e l i u m .

out a f te r pu r s y s t e m at 1600,

All s u r f a c e connec t ions for l e a k s

May 20

May 21

May 22

May 23

•

1630 1635

Z400 0800 1600 2400 0800 1600 2400 0800

ges i nd i -had been

, May ' 16. 1 w e r e t e s t e d

R e s e t P u r g e d wi th 4. 5 cu ft h e l i u m

1007 .2 988 . 4

1 0 1 2 . 8 1009. 9 1011 ,2 1 0 1 5 , 8 1013, 0 1014 ,0

Va lve s and f i t t ings w e r e r e c e i v e d for adding a r e c o r d e r

Bar ton and a

1 Model Dead W

Gauge t e s t connec t ion i s y s t e m .

May 2 3

May 24

1600 2400 0800 1600 2400

202A eight

p r e s s u r e P r e s s u r e

nto t h e s u r f a c e

1018, 1 1016, 8 1016. 1 1020. 6 1020. 0

116 -

1974 Date

May 25

May 26

May 27

May 28

May 29

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 1600 2400 0800

BHP psia

1018.4 1023.9 1023.4 1020.8 1026.3 1026.1 1022.9 1028.4

1031.1 1027.8 1029.7

At 1300, May 29, shut down equipment for instal lat ion of Barton 202A P r e s ­sure Recorder and Dead Weight Tes t ­er on tai lgate of Sper ry Sun equipment. Repurged sys tem with hel ium, r e s e t t ime and p r e s s u r e .

May 29

May 30

1400 1600 2400 0800

1039.3 1041.5 1040.2 1040.4

Checked Dead Weight against Sperry Sun equipment and found 2 psi differ­ence. Char t from previous 24 hour period showed no appreciable amount of fluctuation.

May 30

May 31

June 1

June 2

June 3

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1046.4 1041.6 1043.8 1049.2 1044.7 1046.3 1051.0 1046.5 1049.1 1054. 1 1050.1 1051.1 1054. 1 1052.3

1974 Date

June 4

June 5

June 6

Time

0800 1600 2400 0800 1600 2400 0800 1600

BHP ps ia

1053.8 1055.5 1055.1 1055.0 1056.4 1057.0 1058.0 1060.0

Rese t t ime mechan i sm on Sper ry Sun equipment at 1630, June 6.

June 6 June 7

June 8

June 9

June 10

June 11

June 12

June 13

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1060.0 1060.5 1062.5 1062.4 1062.2 1064.1 1064.4 1064.7 1066.9 1064.8 1066.7 1069.0 1066. 3 1068.5 1072.4 1068.6 1070.6 1074.4 1071.7 1070.9

Reset t ime mechan i sm on equipment at 1130, June 13.

June 13

June 14

June 15

1600 2400 0800 1600 2400 0800 1600 2400

1076.9 1072.2 1076.5 1079.3 1074.7 1077. 1 1081.0 1078.4

-117-

1974 Date

June 16

June 17

June 18

June 19

June 20

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

BHP ps ia

1078.4 1082.7 1078.4 1080.7 1084.6 1081.1 1083.3 1086.9 1082.5 1073.2 1073.1 1054.8 1053.9

1974 Date Time

BHP ps ia

Replaced Sper ry Sun equipment with new surface readout and pr int out machine supplied as replacement by Sperry Sun.

The data from 2400, June 18, to 0800, June 20, a re questionable since they drop off quite rapidly. The connec­tions on all of the equipment were checked for leaks but none were found.

June 20

June 21

June 22

June 23

June 24

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1104.0 1098.8 1099.3 1105.8 1101.5 1099.9 1106.5 1103.4 1099.8 1108.7 1105.5 1102. 1

At 1100, June 24, the P e r m a Gauge was moved f rom i ts old location in the office t r a i l e r to a rack mounted position in the lab t r a i l e r . A consid­erable difference was noticed in the amount of fluctuation caused by change

in t empera tu re on the e lec t ronics and Bourdon tube in the P e r m a Gauge r e c o r d e r . The controlled t e m p e r a ­tu re the machine is nov^ experiencing will have a much more re l iable build­up t rend .

June 24

June 25

June 26

June 27

1600 2400 0800 1600 2400 0800 1600 2400 0800

1109. 1110. 1110. 1110. nil. nil. nil. 1114. 1114.

9 1 7 8 3 3 2 3 3

Rese t t ime mechan i sm on Sper ry Sun equipment at 1330, June 27.

June 27

June 28

June 29

June 30

July 1

July 2

July 3

July 4

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 1600 2400 0800 1600 2400 0800 1600 2400 0800

1116. 1 1117.6 1117.8 1117.6 1118.8 1119.7 1120.2 1119.8 1119.9 1122.9 1123.9 1126.5 1126.5 1126.5 1127.7 1127.8 1127.9 1127.9 1127.9 1128.8

Rese t t ime mechan i sm on Sper ry Sun equipment at 1300, July 5. Power fai lure 0800, July 1.

-118-

1974 Date

July 4

July 5

July 6

July 7

July 8

July 9

July 10

July 11

Time

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

BHP psia

1128.7 1128.7 1134.2 1135.0 1134.9 1134.9 1136.6 1137.6 1137.6 1137.6 1137.6 1137.6 1137.6 1137.6 1137.6 1142.9 1143.7 1143.7 1144.9 1146.0 1145.9

1974 Date Time

BHP psia

Power was off severa l t imes during the previous 144 hour per iod. Each t ime the equipment was r e s e t but no buildup was observed. At 0800, July 17, the bottom hole sensor was brought to the surface and p r e p a r a ­tion was made to run Amerada p r e s ­sure and t e m p e r a t u r e in s t rumen t s . No data available for the period July 17 to Jxily 23, inclusive.

Checked Sperry Sun equipment with Dead Weight and checked out the same as read out. Purged sys t em with hel ium. Reset t ime mechan i sm on Sper ry Sun equipment at 1100, July 11.

July 11

July 12

July 13

July 14

July 15

July 16

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600

1148.1 1149.5 1148.9 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1149.8 1150.9

• 1 1 9 -

1974 Date

July 24

July 25

July 26

July 27

July 28

July 29

July 30

Time

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

#34225 P r e s s .

1172.7 1172.7 1172.7 1172.7 1174.3 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9 1175.9

#33509 P r e s s .

1165.9 1165.9 1165.9 1165.9 1167.5 1167.5 1167.5 1169.0 1169.0 1169.0 1169.0 1170.6 1170.6 1170.6 1170.6 1170.6 1172.1 1172. 1

1974 Date Time

#34225 P r e s s .

P"S

#33509 P r e s s .

Reran p r e s s u r e element numbers 34225 and 33509 to 5160 ft GL. On bottom at 1300, July 30, with 144 hour c locks .

1175 1177 1177 1178 1178 1178 1178 1178 1180 1181 1181 1181 1181 1183 1185 1185

July

July

Aug.

Aug.

Aug.

Aug.

Aug.

30

31

1

2

3

4

5

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1179 1179 1179 1179 1179 1181 1181 1181 1181 1181 1181 1181 1181 1181 1181 1181 1181 1181

Reran ins t rument to 5160 ft GL. On bottom at 1200, Aug. 5.

Aug. 5

Aug. 6

Aug. 7

Aug. 8

Aug. 9

Aug. 10

Aug. 11

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1192 1192 1192 1192 1194 1194 1195 1195 1195 1195 1195 1197 1197 1197 1197 1197 1197 1198

Misrun

Reran ins t rument to 5160 ft GL. at 1200, Aug. 12.

Aug. 12.

Aug. 13

Aug. 14

Aug. 15

Aug. 16

Aug. 17

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1204.8 1204.8 1204.8 1204.8 1206.4 1206.4 1206.4 1206.4 1206.4 1206.4 1208.0 1208.0 1209.6 1209.6 1209.6 1209.6 1209.6

1198.5 1198.5 1198.5 1198.5 1200.0 1200.0 1201.6 1201.6 1201.6 1201.6 1203. 1 1203. 1 1203. 1 1203. 1 1204.7 1206.2 1206.2

-120-

1974 Date Time

#34225 Press. psig

#33509 Press. psig

1974 Date Time

#34225 Press. psig

#33509 Press. psig

Aug. 18 0800 1209.6 1206.2

Aug.

Aug.

Aug.

Aug.

Aug.

19

20

21

22

23

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1213 1213 1213 1213 1213 1213 1213 1213 1213 1214 1216 1216

Reran ins t rument to 5160 ft GL. On bottom at 1300, Aug. 19.

1209 1209 1209 1211 1211 1212 1212 1212 1212 1214 1216 1216

At 1300, Aug. 23, ins t ruments were pulled to surface because of a lubr ica tor packing fa i lure . Ins t ruments were back at a depth of 5050 ft GL at 150,0, Aug. 23. The ins t ruments were se t at this depth because of a bad kink in ^vireline caused by bad packing on the pullout.

1211 1211 1211 1212 1212 1214 1214 1214 1214 1214 1216 1216 1217 1217 1217 1219 1219

Aug.

Aug.

Aug.

Aug.

Aug.

Aug.

23

24

25

26

27

28

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1222 1222 1224 1224 1224 1226 1226 1226 1226 1226 1227 1227 1227 1227 1227 1227 1230

Aug. 29 0800 1230 1219

At 0900, Aug. 29, pulled ins t rument f rom hole and changed 0. 092-in. s ta in less s t ee l wi re l ine . On bottom, 5160 ft GL at 1800. Aug. 29.

The above data was obtained from ins t ru ­ment at 5050 ft GL as noted above.

1228 1228 1228 1230 1230 1230 1230 1230 1230 1230 1231 1231 1231 1231 1231 1233 1233

Reran ins t rument to 5160 ft GL. On bottom at 1600, Sept. 4.

1234 1234 1234 1234 1234 1236 1236 1236 1236 1236 1237 1237 1237

Aug. Aug.

Aug.

Sept.

Sept.

Sept.

Sept.

29 30

31

1

2

3

4

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1238 1238 1238 1240 1240 1240 1242 1242 1242 1242 1242 1243 1243 1243 1243 1243 1243

Sept. Sept.

Sept.

Sept.

Sept.

4 5

6

7

8

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1238 1238 1238 1240 1240 1240 1240 1240 1240 1242 1242 1242 1242

-121-

1974 Date

apt. 9

ept. 10

Time

0800 1600 2400 0800

#34225 Press. psig

1242 1242 1243 1243

#33509 Press. psig

1239 1239 1240 1240

1974 Date

Sept. 21

Sept. 22

Time

0800 1600 2400 0800

#34225 Press. psig

#33509 Press. psig

1256 1256 1257 1257

Reran ins t rument to 5160 ft GL. bottom at 1330, Sept. 10.

On Reran new element #33508 and samie e lement #33509 to 5160 ft GL. On bottom at 1400, Sept. 23.

Sept.

Sept.

Sept.

Sept.

Sept.

Sept.

Sept.

10

11

12

13

14

15

16

Reran ins

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

trument to bottom at 1500, Sept.

Sept.

Sept.

Sept.

Sept.

Sept.

16

17

18

19

20

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1250 1250 1250 1250 1251 1251 1251 1251 1251 1253 1253 1253 1253 1253 1253 1253 1253 1254

5160 ft GL. , 16.

Misrun

1242 1242 1242 1242 1243 1243 1243 1243 1243 1245 1245 1245 1245 1245 1245 1247 1247 1248

On

1250 1250 1250 1251 1251 1251 1251 1251 1251 1253 1253 1253 1254 1254

1974 Date

Sept. 23

Sept. 24

Sept. 25

Sept. 26

Sept. 27

Sept. 28

Sept. 29

Reran ins bottom at

Sept. 30

Oct. 1

Oct. 2

Time

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

#33508 Press. psig

1257 1257 1259 1259 1259 1259 1259 1259 1259 1259 1261 1261 1261 1261 1261 1262 1262 1262

trument to 5160 ft GL. 1500, Sept.

1600 2400 0800 1600 2400 0800 1600 2400

30.

1261 1261 1261 1262 1262 1264 1264 1264

#33509 Press. psig

1256 1257 1257 1257 1259 1259 1259 1259 1259 1261 1261 1262 1262 1262 1262 1264 1264 1265

On

1262 1262 1262 1262 1264 1264 1264 1264

-122-

1974 Date

Oct. 3

Oct. 4

Oct. 5

Oct. 6

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

#33508 Press. _Esig_

1264 1265 1265 1265 1265 1267 1267 1267 1268 1268

Reran ins t rument to 5160 ft GL, bottom at 1600, Oct. 7.

Oct. Oct.

Oct.

Oct.

Oct.

Oct.

Oct.

7 8

9

10

11

12

13

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1265 1265 1265 1265 1267 1267 1267 1267 1267 1267 1268 1268 1268 1268 1268 1270 1270

Reran ins t rument to 5160 ft GL. bottom on 1300, Oct. 14.

Oct. 14

Oct. 15

Oct. 16

1600 2400 0800 1600 2400 0800 1600 2400

1281 1281 1281 1282 1282 1284 1284 1284

#33509 P r e s s . psig

1264 1264 1265 1265 1267 1267 1267 1268 1268 1268

On

1278 1278 1278 1278 1278 1279 1279 1279 1279 1279 1279 1279 1279 1279 1281 1281 1281

On

1284 1284 1284 1284 1285 1285 1285 1285

1974 Date

Oct. 17

Oct. 18

Oct. 19

Oct. 20

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600

#33508 Press, psig

1284 1284 1285 1285 1285 1285 1285 1287 1287 1287 1288

Reran instr t iment to 5160 ft GL. bottom at 1700. Oct. 21 .

Oct. Oct.

Oct.

Oct.

Oct.

Oct.

Oct.

21 22

23

24

25

26

27

2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600

1290 1290 1290 1292 1292 1292 1292 1292 1292 1292 1293 1293 1295 1295 1295 1295 1295 1295

#33509 P r e s s . psig

1285 1285 1287 1287 1287 1287 1287 1287 1288 1288 1290

On

1292 1292 1293 1293 1295 1295 1295 1295 1295 1296 1296 1296 1296 1298 1298 1299 1299 1299

Reran ins t rument to 5160 ft GL at 1400, Oct. 28. Changed from Mountain Day­light Time to Mountain Standard Time at this point.

1301 1302 1302 1302 1302

Oct. 28

Oct. 29

1600 2400 0800 1600 2400

1298 1298 1298 1299 1299

-123-

1974 Date

Oct. 30

Oct. 31

Nov. 1

Nov. 2

Nov. 3

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

#33508 Press. psig

1299 1299 1299 1299 1301 1301 1301 1301 1301 1302 1304 1304 1304

#33509 Press. psig

1304 1304 1304 1304 1304 1304 1304 1306 1306 1306 1306 1307 1307

Reran instrument to 5160 ft GL at 1300, Nov. 5.

1974 Date

Nov.

Nov.

Nov.

Nov.

Nov.

Nov.

13

14

15

16

17

18

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

#33508 Press. psig

1316 1318 1318 1318 1319 1319 1319 1319 1319 1319 1319 1319 1321 1321 1323 1323

#33509 Press. psig

1312 1312 1312 1312 1313 1313 1313 1313 1315 1315 1315 1315 1315 1316 1316 1318

Nov.

Nov.

Nov.

Nov.

Nov.

Nov.

Nov.

5

6

7

8

9

10

11

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

1306 1306 1307 1307 1309 1309 1309 1309 1309 1310 1310 1312 1312 1312 1312 1313 1315 1315

Reran instrument to 5160 ft GL. bottom at 1500, Nov. 12.

Nov. 12 1600 2400

1316 1316

1307 1307 1307 1309 1309 1309 1309 1309 1309 1309 1310 1310 1310 1310 1310 1310 1312 1312

On

1312 1312

Reran ins t rument to 5160 ft GL. bottom at 1300, Nov. 19.

1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327 1327

Nov.

Nov.

Nov.

Nov.

Nov.

Nov.

Nov.

19

20

21

22

23

24

25

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

On

1319 1319 1319 1319 1319 1321 1321 1321 1321 1321 1321 1323 1323 1323 1323 1323 1324 1324

Did not re run ins t rument in prepara t ion for installing Sper ry Sun equipment on Dec. 7. Installed Sper ry Sun Permagauge on Dec . 7. Had problems with mois tu re freezing in capi l lary tubing and physical location of surface equipment. Permagauge in operat ion at 1500, Dec. 10.

-124-

1974 Date

Dec. 10 Dec. 11 Dec. 12 Dec. 13 Dec. 14 Dec. 15 Dec. 16 Dec. 17 Dec. 18

Time

1600 0800 0800 0800 0800 0800 0800 0800 0800

No data for dates of Dec. Dec. 26.

Dec. 27 Dec. 28 Dec. 29 Dec. 30

0800 0800 0800 0800

BHP psig

1335.7 1336.7 1336.9 1337.8 1340.8 1342.0 1342.2 1343. 1 1345.2

19 to

1352.7 1351.4 1352.2 1352.8

Lost power, r e s e t at 1030, Dec. 31

Dec. 31 1200 1351.7

1975

Jan. 1 Jan. 2 Jan. 3 Jan. 4 Jan. 5

0800 0800 0800 0800 0800

1351.2 1352.4 1353.0 1368.7 1373. 1

Machine disconnected for move to different location on surface . No data for per iod Jan. 6 to Jan. 20. Arr ived location at 1200, Jan. 21 . Changed routing of capi l lary tubing on surface so it would r each to new location of Sper ry Sun Pe rmagauge . Hooked line in to Permagauge and checked for l eaks . Purged sys tem with 50 ft^ of hel ium and le t Permagauge reach equi l ibr ium. Ente red cor rec t ion factors and r e s e t machine .

1975 Date

Jan . 21

Jan. 22

Jan. 23

Jan. 24

Jan. 25

Jan. 26

Jan. 27

Jan. 28

Jan. 29

Jan. 30

Jan. 31

Feb . 1

Feb . 2

Feb . 3

Feb . 4

Time

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

BHP psig

1368.4 1368.2 1368.5 1368.7 1369.0 1369.1 1369.6 1369.2 1369.6 1369.8 1370.0 1370.2 1370.2 1370.8 1370.8 1371.1 1371.2 1371.3 1371.6 1371.7 1372.0 1372.1 1372.2 1372.4 1372.8 1372.9 1373.0 1373.2 1373.8 1373.5 1373.6 1373.8 1373.8 1374.1 1374.5 1374.2 1375.0 1375.1 1375.3 1377.0 1377.2 1377.5 1377.5 1377.8

125-

1975 Date

Feb . 5

Feb . 6

Feb . 7

Feb . 8

Feb . 9

Feb . 10

Feb . 11

Feb. 12

Feb . 13

Feb . 14

Feb . 15

Feb . 16

Data omitted for Feb . 17 to Feb. 26 and for Mar . 31 to May 15. Data were unrel iable because of t emper ­ature effects on Sperry-Sun equip­ment . No equipment was available for the period Feb . 27 to Mar . 30.

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

BHP psig

1378.3 1378.3 1378.5 1378.8 1379.4 1379.6 1379.8 1379.8 1380. 1 1380.4 1380.4 1380.6 1380.8 1381. 1 1381.1 1381.5 1381.6 1381.7 1381.9 1382.3 1382. 1 1382.4 1382.9 1383. 1 1383.3 1383.2 1383.6 1383.6 1383.9 1384.2 1384.2 1384,5 1384.9 1385.1 1385.2 1385.4

1975 Date Time

BHP psig

On May 16, r e c o r d e r was moved to controlled environment. System purged with hel ium.

May 16

May 17

May 18

May 19

May 20

May 21

May 22

May 23

May 24

May 25

May 26

May 27

May 28

1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

1430.6 1430.6 1430.8 1430.9 1427.9 1428.1 1428.1 1428.3 1428.5 1429.0 1428.9 1429.0 1429.4 1429.3 1429.6 1429.8 1429.9 1430.2 1430.0 1430.0 1430.8 1430.7 1430.3 1430.7 1430.8 1430.8 1430.8 1431.0 1431.1 1432.1 1431.7 1431.4 1432.2 1432.0 1432.5 1432.8 1432.8 1433. 1

-126.

1975 Date

May 29

May 30

May 31

June 1

June 2

June 3

June 4

June 5

June 6

June 7

June 8

June 9

June 10

June 11

Tincie

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400

BHP psig

1433.4 1433. 1 1433.2 1433.9 1433.8 1433.4 1433.8 1433.8 1433.9 1434. 1 1434.3 1434.3 1434.5 1434.9 1434.7 1434.6 1435.0 1435.0 1434.8 1435.5 1435.2 1435.4 1435.9 1435.8 1436.1 1436.4 1436.5 1436.2 1436.1 1435.6 1435.5 1435.4 1435.7 1435.9 1436.0 1436.0 1436.3 1436. 1 1436.1 1436.3 1436.6 1436.4

1975 Date

June 12

June 13

June 14

June 15

June 16

June 17

June 18

June 19

June 20

June 21

June 22

June 23

June 24

Termina ted

Time

0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800 1600 2400 0800

long t e r m up monitoring on June

BHP psig.

1436.3 1437.0 1435.9 1436.0 1437.1 1436.8 1436.5 1437.6 1437.5 1436.8 1438.4 1438.1 1437.6 1438.6 1438.1 1438.0 1438.6 1438.8 1438.5 1438.5 1438.0 1438.0 1438.8 1438.7 1438.6 1438.5 1438.8 1439.1 1439.3 1439.1 1439.2 1439.8 1439.7 1439.6 1440.6 1440.5 1440.2

p r e s s u r e b 24.

•127-

128-

APPENDIX E SUMMARIES FROM RELEVANT

RADIOLOGICAL MONITORING PROGRAM REPORTS

(F rom Reference 8, PNE-RB-51-7 to -10 inclusive)

-129-

130-

1. SUMMARY OF RESULTS FOR NOVEMBER 1, 1973 THROUGH FEBRUARY 4, 1974

Beta radioact ivi ty in a i r par t icu la te samples for this period remained at •very low concentra t ions , ranging from 0.02 to 0. 13 pCi/m-^. These values a r e consis tent with values observed by Eber l ine at other s i tes during this per iod, at Rio Blanco during previous pe r iods , and with values repor ted by the Environmenta l Protec t ion Agency (EPA) Air Surveil lance Network. Gamma scans of the a i r par t icu la te samples (composite) indicated that the concentra­tions of gamma emi t t e r s were below the min imum detectabil i ty of the 4-inch d iamete r x 4-inch thick Nal(Tl) de tec tor .

TLD data for this per iod indicated an average background radiation dose r a t e of 2.25 m i l l i r e m per week. This is consis tent with the dose ra te m e a ­sured during the previous winter . Lower dose r a t e s during the winter a r e a t t r ibutable to attenuation of radiat ion f rom t e r r e s t r i a l sources due to snow cover .

Soil samples collected in November 1973 were analyzed for isotopes of plu­tonium, u ran ium and thor ium. The concentration of plutonium was within the range of expected values due to worldwide fallout. The concentrat ions of uran ium and thor ium w e r e within ranges that occur natural ly .

T r i t ium concentrat ions in water m e a s u r e d by electrolyt ic enr ichment were in the range of < 0. 1 p C i / m l to 0. 4 p C i / m l . Other beta activity was in the range of 0. 0 to 10. 8 p C i / 1 .

- 1 3 1 -

2. SUMMARY OF RESULTS FOR FEBRUARY 4, 1974 THROUGH APRIL 30, 1974

Beta radioactivi ty in a i r par t icu la te samples inc reased in March and Apri l to a peak of 0. 47 pCi /m^ from a mid-winter low of 0. 02 p C i / m ^ . A seasonal i nc rease is alw^ays noted in the spr ing, but this i nc rease is m o r e than usual and is at t r ibutable to injection of yea r -o ld fission products from the upper a tmosphere inventory due to spring mixing of the upper and lower a tmosphere . The p resence of a fission product mixture consis tent with the t ime delay since the June 26, 1973 t e s t by the Peop le ' s Republic of China indicates that this t es t is responsible for mos t of the inc rease in the spring of 1974. The inc rease is not at t r ibutable to Rio Blanco because it was typical of levels m e a s u r e d throughout the United States by Eber l ine and by the Environmental Protec t ion Agency. Fo r example , gamma isotopic analysis of composite f i l ters fronn the southeastern United States showed the p resence of the same approximately yea r -o ld fission product mix ture at s imi la r concentrat ions as measu red at Rio Blanco.

Vegetation samples (Goldenrod, Sagebrush, Willow, Greasewood and Milk Cow Feed) were collected on March 29, 1974. S r -89 , t r i t ium, and gamma ennitters (other than natura l K-40) were not detected in any of the samples . The concentration of Sr -90 ranged from 0. 04 to 0. 18 pCi /g (dry weight) and is at tr ibutable to worldwide fallout.

TLD data for this per iod indicated an average background dose ra te of 3. 0 m r e m / w e e k . This is higher than the dose ra te measu red during the winter (2.25 mrem/week ) and is at tr ibutable to inc reased dose ra te f rom t e r r e s t r i a l sources due to the melt ing of the winter snow cover or to the inc reased world­wide fallout during this per iod.

Water samples collected during March 1974 did not indicate the p resence of any unexpected radioact ivi ty. Gross beta concentrat ions ranged up to a msuci-mum of 8 l4 p C i / 1 . T r i t ium was measu red in some of the samples by e l ec t ro ­lytic enr ichment . Concentrations of t r i t ium ranged from 0. 12i0. 08 to 0. 25l 0. 08 p C i / m l .

Gamma e m i t t e r s , other than natura l radioactivity were not detected in samples collected on March 29, 1974.

Cesium-137 was measu red in soil samples collected on March 29, 1974 with concentrat ions ranging from l e s s than 0. 09 to 0. 9 pCi /g (dry weight). T r i t i um and gamma emi t t e r s (except na tura l radioactivity) were not detected in any of the samples .

-132-

3. SUMMARY OF RESULTS FOR MAY 1, 1974 THROUGH JULY 29, 1974

Beta radioactivity in air particulate samples continued to increase into May 1974 as noted during the previous period, peeiking during the first two weeks of May 1974. This increase is attributable, as in the previous period, to injection of year-old fission products fronm the upper atmosphere due to spring mixing of the upper and lower atxnosphere. The increase in radioactivity is not attributable to Project Rio Blanco. After the second week in May, the air concentration shows a decreasing trend froma peak concentration of 0 .54 pCi /m in May to l e s s than 0. 1 pCi/m-^ at the end of July.

TLD data for this period indicated an average background dose rate of 2. 2 mrem/week. There i s no evidence of any increase due to Rio Blanco.

Water samples collected during July 1974 did not indicate the presence of any unexpected radioactivity. Gross beta concentration, other than tritium, were below 10 pCi /1 . Tritium was measured in four Seunples by electrolytic enrich­ment followed by liquid scintillation counting. Concentrations of tritium ranged from 0. 14l0. 08 to 0. 49^0. 08 pCi/ml . This tritium is attributable to natural production in the atmosphere and worldwide fallout from weapons testing. This concentration is a small fraction of the peak in 1963 caused by weapons testing in the atmosphere. Gamma emitters were not detected by gamma spectrometry in any of the samples.

Gamma emitters other than natural K-40 were not detected in three milk samples collected in July 1974.

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REFERENCES

Pro jec t Rio Blanco, Final Report , Detonation Related Act ivi t ies , CEP Geonuclear Corporat ion/Cont inental Oil Company, June 30, 1975, PNE-RB-67 .

Pro jec t Rio Blanco Definition Plan, CER Geonuclear Corporat ion, January 24, 1973, PNE-RB-16 .

Rio Blanco Massive Hydraulic F r a c t u r e P ro jec t Definition, CER Geonuclear Corporat ion, 1974, otherwise undated.

Katz, D. L . , et a l . Handbook of Natural Gas Engineering, McGraw-Hil l Book Company, New York, 1959, p . 196.

Status of Water Disposal Well (Fawn Creek Government No. 1) Pro jec t Rio Blanco, a repor t to the Colorado Department of Health, June 20, 1974, CER Geonuclear Corporat ion.

Pro jec t Rio Blanco, Radioactivity and the Environment, P N E - R B - 6 3 , CER Geonuclear Corporat ion, March 3, 1975.

Pro jec t Rio Blanco Data Report , Product ion Testing (RB-E-01) , November 1973 and J a n u a r y - F e b r u a r y 1974, NVO-148 (PNE-RB-61) , Nevada Operat ions Office, U .S . Atomic Energy Commiss ion, September 1974.

Radiological Monitoring P r o g r a m , Pro jec t Rio Blanco, repor ted to CER Geonuclear Corporat ion by the Eberl ine Ins t rument Corporat ion, PNE-RB-51-1 to 10, inclusive.

Environmental Statement, Rio Blanco Gas Stimulation Pro jec t , WASH-1519, U .S . Atomic Energy Commission, Apri l 1972, with addendum March 1973.

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