In Reply Refer Tc: RP-2-1

Mobil ProducIny Texas « fan* Mexico Inc.

Attanticn: Nr. ?i. C. Sweeney Post Office Box 4100 The Woodlands. Texes 77387

Gentieeen:

Reference is ..ede to your Initial Plan uf Exploration received February 4. 1986. amended February 5, 1?9€, for Lease OCS-G 7292. 31cck 260, Hiyh Island Area. Tills plan Includes tlie activities proposed for Wells A. B. and C.

lo accordance with 30 CFP. 250.34. revised Decewl>er 13. 1979. and our Utter dated January 29. 1979. this plan has oeen determined to be conplete «s of February 18. 1986. and Is now beiny considered for Approval.

Your iIan control number Is ff-?400 and should be referenced in your couounication and correspondence concerning this UUP.

Sincerely >ours.

(Ong. Sgd.) A. Oonald Giroir

Acting Regional Supervisor Rules and Production

bcc: .Leas. 1CS-G 7292 10FS-3-2) (FILE OOM) LOPS- -4 w/Publlc Info. Copy of UM plan (PUBL.REC.)

lto-3

l-U7olbcrt:ycw:2/14/86 Disk la

Office of mm «-n service* Pros, an ow

FEB : 4 1386

Mobil Producing Texas & New Mexico Inc.

January 31, 1986

U. S. Department of the Interior Minerals Management Service P. 0. Box 7944 Metairie, Louisiana 70010

• H f e * ftwxriea

FEB 05 1966

Attention: Mr. Mike Tolbert

Re: High Island Block 260 OCS-G-7292 Offshore, Texas

Gentlemen:

A Plan of Exploration for this lease was sent to you with our letter of January 28, 1986.

We wish to amend the Plan as follows:

"Dri l l ing of '•he f i r s t exploratory well is scheduled to begin July 1, 1987. I f all three proposed wells are dri l led consecutively, the last well would finish in February 1988."

i f there are any questions concerning the plan or the amendment, please call me at (713) 363-5330.

Sincerely,

M. E. Sweeney Environmental & Regulatory Manager

MES:ss

a:w603119e.mes

Mobil Producing Texas & New Mexico Inc.

PO BOX 4too

THE WOOOUMM. TCXAS FMtMMJS

January 28, 1986

U. S. Department of the In te r io r MNFRMS MANACcurxT srmnci Minerals Management Service P. 0. Box 7944 M e t a i r i e , Louisiana 70010 rfTQ 04 1986

A t t e n t i o n : Mr. 0. tf. Solanas o n w m . Regional Supervisor ™ r W C , C T M

Rules & Production

Re: The Superior Oil Company 0CS-G-7292, Block 260 High Island Area Offshore, Texas

Gentlemen:

Attached please find nine copies of Plan of Exploration for the Superior 011 Company lease shown above. Pp*! copies are for public information purpc ; five contain confidential '.normation, and are marked as such.

Also attached are three copies of the Archeological and Hazard Survey Report.

Excluded from the public information copies are certain geological discussion and depths of wells. The structure maps and the cross-section have been deleted from the public information copies.

Your approval of this POE is respectfully requested.

If there are any questions concerning this Plan, olease telephone the under­signed at (713) 363-5330.

Sincerely,

MOBIL PRODUCING TEXAS & NEW MEXICO INC. As Agent for The Superior Oil Company

M. E. Sweeney Environmental and Regulatory Manager

MES:ss

MOBIL PR 'ICING TEXAS I NEW MEXICO INC.

PLAN OF EXPLORATION

0CS-G-7Z9Z BLOCK 260

HIGH ISLAND AREA

OFFSHORE, TEXAS

JANUARY 28, 1986

PLAN OF EXPLORATION OCS-G-7292, BLOCK 260

HIGH ISLANO AREA OFFSHORE. TEXAS

Mobil Producing Texas & New Mexico Inc. (MPTM), as agent for The Superior 011 Company, the operator o.~ OCS-G-7292, High Island Block 260, submits th is Plan of Exploration pursuant to the requirements of 30 CFR §250.34.

This plan addresses the d r i l l i n g of three exploratory wel ls, the f i r s t of which would be started in la te 1986. Subsequent wells would be d r i l l ed as the need arises. The water depth on the lease varies from about 59 feet to 65 f e e t , and the wells would be d r i l l e d using a jack-up r i g . The subject lease i s located approximately 27 miles southeast of Galveston, Texas. The proposed locat lors of the wel ls, to be d r i l l e d ve r t i ca l l y , are shown on the f i r s t page of the Appendix to th is Plan.

I f commercial reserves are discovered by these exploratory wells, i t would be MPTM's Intention to develop those reserves 1n a t imely manner.

An archeological and hazard survey was performed in March 1985, and documented in a report dated Apri l 1985. Three copies of the report accompany th is Plan of Exploration.

The basic configuration of a jack-up r ig 1s shown in the Appendix. Blowout preventers and related well control equipment w i l l be insta l led, used, and tested 1n accordance with OCS Order No. 2. The r i g w i l l '-.se a dlverter system and r iser as required for shallow gas while d r i l l i n g the surface hole. A remotely-controlled BOP system w i l l be instal led for d r i l l i n g below conductor pipe. See Appendix. A l l BOP systems w i l l have a working pressure greater than the expected surface shut- in well pressure. In addit ion, an Inside blowout preventer assembly and an essentially ful l -opening d r i l l str ing safety valve, in the open pos i t ion , w i l l be maintained on the r i g f loor to f i t a l l d r i l l pipe in the d r i l l s t r i n g .

Pol lut ion prevention control measurts w i l l be in accordance with OCS Order No. 7. MPTM has on f i l e with the Minerals Management Service an 011 Spi l l Contin­gency Plan for the Gulf of Mexico. In the event of a s p i l l , th is olan w i l l be activated. The plan was f i l e d with the USGS on December 27, 1977, approved January 5, 1978, amended March 25, 1985, and is by reference made a part of th is document.

2

MPTM is a member of Clean Gulf Associates, which provides s p i l l containment and clean-ic equipment at f i v e Hall iburton Services bases on the Gulf Coast: Galveston and Rockport in Texas; Grand Is le , Venice and Intracoastal City In Louisiana. I f a sp i l l should occur from the proposed operations, the equip­ment located at Galveston would be u t i l i zed f i r s t , with additional equipment moved in from the other bases, i f necessary. Response time to a sp i l l would va-y with the action required. Helicopter response, for the spraying of dispersants or col lect ing agents, would be one to two hours. Fast boat response with oi l boom, skimmers, pump and storage tanks would require approx­imately 4-8 hours. Including preparation time. A heavy equipment system response would require approximately 12 hours, including six hours preparation t ime.

D r i l l cuttings and excess d r i l l i n g f lu ids w i l l be disposed of In accordance w i th applicable environmental regulations. The d r i l l i n g f l u i d components and addi t ives to be used are l i s t e d in the Appendix.

A l l so l id waste material, such as rubbish, galley waste, paper, e tc . , w i l l be col lected and transported to shore for proper disposal.

The estimated air emissions generated by the operation, assuming continuous d r i l l i n g , in the Appendix.

A i mentioned above, the locat ion of the proposed exploratory wells 1s approxi­mately 27 miles southeast of Galveston, Texas. MPTM maintains a D i s t r i c t O f f i ce at Freeport, Texas. D r i l l i n g ac t i v i t y w i l l be supported from that o f f i c e which provides a base for marine and helicopter service. I t 1s estimated that four boat round t r i ps and eight hel icopter round t r ips per week between Freeport and the r i g w i l l be required during operations.

APPEMDIX

A. Exploration Plan - Wall Locations and Targets

B. Location of Lease Block Relative to Shore

C. Lease Block Map With Well Locations

0. Structure Maps

E. Cross-Section

F. Shallow Gas Hazard Statements

G. Typical Jack-Up Rig

H. Blowout Prevention Equipment

1. D r i l l i n g Fluid Components and Additives

J . A i r rm1ssions

INTEROFFICE CORRESPONDENCE

DATE: January 22, 1986

TO: M. E . Sweeney CC:

MFTM PLAN OF EXPLORATION FOR 0CS-G-7292 HIGH ISLAND BLOCK 260

Exploration Plan

The evaluation of Block 260 c a l l s for the d r i l l i n g of three (3) w e l l s . A l l three are to be dr i l l ed v e r t i c a l l y from independent locat ions . The planned locations for these wells are l i s t ed below.

Logging Program

A GR/DIL survey w i l l be run at a l l casing points below surface caa ing , and at total depth. Other surveys w i l l be run as deemed necessary for proper evaluation of the hole.

At l e a s t one set of d r i l l cutting samples w i l l be collected from the base of the surface casing to total depth.

Well No. Target Location

A B C

2700' FNL & 2600' FWL 3600' FNL & 4800' FWL 5700' FSL & 5900' FWL

G. J . Ga i l Geological Manager

GJG/fhn

APPENDIX

TEXAS

v~ 0 SO KW ~ ItO

• CALC III M I L . C S

MOBIL OIL OCS-G-7192

259 BLOCK 2 * 0 261

tos

PLAN

BLOCK t t 4 263

•OOO1

PROPOSED MINERAL DEVELOPMENT

HIGH ISLAND A R E A GULF OF MEXICO

APPLICATION BY

.,1986

APPENDIX B

MOBIL OtL THE WOOOLANDS.TEXAS

2800* A * 4 t O O '

s

A"

BtOO1

MOBIL OIL O C S - G - 7 2 9 2

BLOCK 290

/ \ PROPOSED LOCATIONS

I SCALE

2000 4000

PERMIT PLAT

HIGH ISLAND AR^A GULF OF ME X 5 CO

O C S - G - 7 2 9 2 . NO.

.1986 MOBIL OIL CORP

APPENDIX C

IMTBBOFFICB COBRfClPCSTOEWCE

DATE: January 22, 1986

TO: M.E. Sweeney c c :

SHALLOW GAS STATEMENT OCS-G-7292 WELL B 3600' FNL & 4800' FWL HIGH ISLAND BLOCK 260 OFFSHORE, TEXAS

Pursuant t o t h e i d e n t i f i c a t i o n o f any " sha l l ow gas" hazards which may be e n c o u n t e r e d by w e l l B , t h e f o l l o w i n g d a t a has been rev iewed:

1) Se i smic L i n e s 84T-OHI-108 84T-OHI-111 TOM-3496-7 W-HS-17B

2) A r c h e o l o g i c a l and Hazard Data and s tuJ B l o c k 260 High I> " nd Area John E iance & Associates

The hazard da; dicate the p o s s i b i l i t y of a small "shallow gas" p*. -Kor 700' ENE of the proposed location at an approximate depth of 25' - 75' below the sea floor and an areal extent of 5 - 10 acres.

Conclusion

None of the above data indicates any "shallow gas" hazard within 700' of the proposed B location.

A • . B. Wildgoose Geophysical Manager

DETrfhn

APFtNDlX

INTEROFFICE CORRESPONDENCE

DATE: January 22, .'JSi

TO: M.E. Sweeney cc:

SHALLOW QAS f IV EHENT OCS-G-72V? WT : 5700' FNL 6 -JUU' V&L HIGH ISLAND BLOCK 260 OFFSHORE, TEXAS

Pursi-d.it t o the i d e n t i f i c a t i o n of any "shallcv u^s" hazards which may be encountered by w e l l C, the fol l o w i n g c*ita haa bf en reviewed:

1) Seismic Lines 84T-OHI-108 84T-OHI-111

2) Archeological *.nd azard Data and Study Block 260 High Island U*a John E. Chance - Associates

The hazard l a t a indicate the p o s s i b i l i t y e* a sn#.: "shallow gt>s" pocket 800' NE o* the propose*, ice .r> . ; a.r an approximate c««pth of 20' - 100' below tne s»fi £)^?c j r d an areal i x : * " * : i f 5 - 10 a ".res.

CC.-.:-J1 jsic.n

Nor'- ' f ths above data indicates any "shallow ?.s" hazard w..t.i11 i00' of the proposed C lo c a t i o n .

B wildgoose C«e Physical Manager

DET:fhn

APPENDIX

j-NTJcOFFICE COFTlKSPCfc/LiTVCE

DATE: January 22, 1985

TO: M . E . Sweeney c c :

SHALLOW GA?- STA 7EMENT O C S VJ-7292 WELL A 2 Sr. 7 2600' FWL ftlteS : c -u D BLOCK 260 OI - ; * E , TEXAS

Pursuant to tha i d e n t i f i c d t : . ^ a of an} "shallow gas" hazards which may ba encountoved by w o l l A, cho f o l l c w i n g data haa boon reviewed:

1) Seismic L i n e s 84T-OHI-107

:

!

J :

I

84T-OHI-108 TOM-3496-7 W-HS-17B

2) Archeological and Hazard Data *nd Stud;-Block 260 High Island area John E. Chance & Associ. tes

Th*. hazard data indicate the Dcrjawility of tvo mall "she 'low gas" pockets 1000' SO«JH. and 1200' Ni:t 0«! .-ho propc sed location at depths of approximate y 13' - 75' belov tre i" i floor and an areal extent of a.... ut 5 acres. Xn v.di*-...- the seismic data indicate another ox -ible small gas »or. a_ an approximate depth of 1900' cubi I and 1200' aouth »: the proposed loci.r. .c*.

Conclusion

None of cne above data indi<- alee any "shallow grs" hazard within 1000' of the proposed A location*.

/ m\

' \ \ VIA B. Wildgoose Geophysical Manager

DET/fhn

APPtNOIX F-3

APPENDIX G

Typical jacK-up Ria Dtvertftr System

Hull Transom

30-

Bell

Nipple

30" - 500* Hydrl)

^_ 8" Dlverter Lines to Overboard

/

8" Hydraulic Valves

V 1

_ _

30"x 1' Grade B

Drive Pipe

Hull Transom

8" n >,erter Lines tc o.~rooar*

30" Diverter Spool

APPENOIX H-1

Typical Jack-un Kin BOP Stack

13-5/8" 5000# W.P. Annular Preventer

TWO (2 HyrJrau

Two (2

3^3/16" 10,000* W.P. lc Fall Safe valves

and 3-1/16" 10,OOQ« W.P.

Krs.nl valves

1 I

J L

1 1

1 .. ,,

• ! C i 1

1 1

TWU f 13-5/8" 10,00O# W.F Dot* i Preventers

APPENDIX H 2

mm mm mm mam m J em fcasa u^y ta&a F$&^ U»I@J e» i J L,~ i t.__J i .... J

WEIGHT MATERIALS

Barite

Heaatlte

Calciua carbonate

W1SC0SIFIERS

Attapulgite

Hydron1ethy1ce11u1ose

THINNERS

Chroaa Lignosulfonate

Processed Lignite

Causticized Lignite

Hcdified Tannin

Chroma Lignite

Polyacrylate

Sodiua Tetraphosphate

Sodiua Acid Pyrophosphate

Polyaor

Sodiua Carbonxynethylecellulose

Polyanionic Colluloaic PoiyaMr

"Synergistic Polyawr Blonds"

Polysaccarido

Polyacrylate

Polyacrylaatde

Pol.gac/y^ata-polyacrylaaiido

LUBRICANTS. SURFACTANTS. DETERGENTS Lubricants for well* in onwlron- 00S-3, Montor 28, LVT

mentally sensitive aroas

TRADE NAMES

Baroid, Megcobar, laco Bar, Nil-Bar

Nu-Dense, Densinix, Magco For'i

Imco Watt, Baracarb. Lo M..K, H.O. 35

Nilgai. Hagcogel. IBKO Gol, Aquagel

Brinogol, Zeogel. Salt tel. SaltMtar Gal

NEC

Untcal. WC-10, Sporsans, Q-Broxtn

Tannathin, Ligco, laco Lig, CarbonoK

laco Thin. Causti l ig, Ligcon. CC-16

Otsco

KP-20

Thonaa-Thin

Magcophos, Oi l fos, Barafos. laco Phos

S.A.P.P.

XC Polyawr. Duovis

laco CK. Cellex, Nagco CMC. Nil CMC

Drispac, Polypac, Steflo

Mil Tsap, Resinex. Poly Pa, Ouronox, Cheatrol-x

Mylogel,laperaex, Starch, Dextride, Higco-polyaal, Synerox

UL-100, Cypan

Cycfloc, MF-1, ASP-700

Newdril l. Kla-Kote

Detergent

Blond of Anionic Surfactants

Extraao Pressure Lubricants

laco MD. Con Pot. D-D Nilchaa II

Salinox

laco EP Lube. EP Hud Lube, Bit Lube,

Libri-fila

B,s«iv^m?ft.{.?ufs1,^M' SFT

DEFOAMERS

^(STd^foL5rM#rMbU

Aluaiua Stearata

OTHER CHEMICALS Sodiua Hydroxide

Caustic Potash

Sodiua Carbonate

Sodiua Bicarbonate

Calciua Sulfate

Calciua Hydroxide

Calciua Chloride

Sodiua Chloride

Potassium Chloride

Oil Hud Eaulsifier

Oil Hotting Agent

Oil Hud Viscosifitr

Asphaltic Resin

Asphalt

JflST ClRCUyATIua HATER 1*4.}

Hut Shells

Cellophane Flakes

Phenolic Flakes

STUCK PIPE APPITIVgS

Oil Soluble Surfactant

ABBS m tmssm FMHPS

nc Bromide

TRADE NAMES

Foaabin, Sara Do foaa, Hagconol. LO-8

Aluainua Stearate

Caustic Soda

Potassiua Hydroxide

Soda Ash

Bicarb

GVP

Liae

Calciua Chloride

Salt

KCL

K*Carbo?ast D H A ' c , r b 0 T * c I M

SE-U, DFL

Gel tone,, Retro-Tone, VC-M, Carbo-Gel Km M l

Carbo-Trol, DV-22. Duratone

Diesphalt, Liquid Protecto-Magic

Pheno-Soal

Spotty, Plpolax, Free Pipe Skot Froo, Potrocote

Heavy weight clean brines.

Hater disposable asphalts

Processed Hydrocarbons

Holecoat I I , SUM Ihole. IPI

SoI tax

J HIGH ISLAND BLOCK 260 OFFSHORE, TEXAS

ESTIMATED ANNUAL RIG EMISSION (Tons/Yr)

SOURCES NOx

D r i l l i n g Rig 1

Boats 2

Crew Boat Supply Boat

Hel icopters 3

435.8

16.2 26.1

1.0

so2

29.5

0.3

VOC

14.6

0.9 3.2

1.0

CO TSP

63.8

3.6 7.3

10.7 0.5

TOTALS 479.1 29.8 19.7 85.4 0.5

Exemption 899.1 899.1 899.1 29,934 899.1

Based on 1 year of continuous d r i l l i n g , emission factors from Table 4.4, EPA 450/3-77-026, Page 87

Based on emission factors in AP-42 (Sect. 3.2.3).

Based on emission factors in AP-42 Table 3-4.

1 Calculated using the fol lowing formulas with D=27 miles: CO = 3400 D2/3 NOx, S02, VOC, TSP2=33.3(D)

APPENDIX J