Weatherford Drilling with Casing - Petroleum Club · Utilizing Weatherford DPA drilling with casing bits to drill through permafrost

Weatherford Drilling with Casing

Claas Wilken

DRILLING WITH CASING

© 2016 Weatherford. All rights reserved.

Weatherford DwC Technologies

Retrievable System (June 2016)Retrievable Bits and BHA’s

Non-retrievable SystemDrillable Casing Bit

DRILLING WITH CASING 1

© 2016 Weatherford. All rights reserved. 2

There are potential DwC opportunities when …

1. I am drilling short conductor/surface casing

2. I plan to batch-drill

3. The section will encounter loss circulation and need to save mud cost

4. I have trouble getting casing or liner to TD, reaming before running casing is standard practice

5. I am drilling through high pressure zone into low pressure reservoir or weak zone

6. When running in casing to seafloor I have trouble finding the predrilled hole

7. I can use non-retrievable DwC as the section doesn’t require logging or steering

2DRILLING WITH CASING


Implemented in 35 countries servicing over 134 clientsFocus on non-retrievable system

Time savingProblem resolution

Manufactured and shipped over 1,800 tools to dateDrilled over 1500 wells , 594,000m in total section lengthCasing sizes from 4-1/2” to 24”

Weatherford DwC Foot Print


© 2016 Weatherford. All rights reserved.DRILLING WITH CASING

4

Total Job Count

1,539

Longest Section

3,660 m

Deepest Measured Depth

9,182 m

Highest Inclination

95°

Longest Distance Drilled

1,059m

Highest On-Bottom ROP

290 m/hr

Average On-Bottom ROP

46 m/hr

String Cemented

98.1%

String Reached TD

93.8%

Total Section Length

594,087m


KPI’s


Non-Retrievable DwCDefyer™ Series Drillable Casing Bit

6mm round TSP embedded into the aluminum bladeInterchangeable nozzles

Steel Outer Body

Tungsten Carbide Hardfacing on Aircraft grade Aluminum nose

(fully PDC drillable)

PDC Cutters

Excellent Reaming Tools

80% less steel to drill out

Steel blade strip

Aluminum blade support

Drill up to 20,000psi Unconfined Compressive Strength (UCS) formation

PDC gage cutters

Drill up to 7,000psi Unconfined Compressive Strength (UCS)

formation

DPA Series DT Series

Ceramic Nozzle



Weatherford Defyer DPA -Field DrilloutResult 1


© 2016 Weatherford. All rights reserved.77DRILLING WITH CASING


WFT DwC Jobs in SEE and Black Sea Countries


AustriaJob Count = 312009 - 2015

RomaniaJob Count = 242010 - 2016

UkraineJob Count = 12016


WFT DwC Jobs in Romania - Equipment


• Bit - drillable casing bit Defyer DPA4416• Float collar – single poppet value Model 402NP• Centralizer - 2x SpiralGlider HD on the 1st joint, then 1 centralizer

every 3rd joint• Connection - Tenaris ER (13-3/8”) and Tenaris XP (9-5/8”)• Casing Drive - Volant CRTi3-7.0 used to make up and drill in the

casing

9-5/8” DPA4416X Float Collar 402NP

SpiraGliderHD

DPA4416X

Volant CRTi3-7.0


WFT DwC Jobs in Romania


• DwC in 13-3/8” and 9-5/8” sections. Best performance record achieved when drilling to 355m TD in 10.6hrs• Average on-bottom ROP was 33 m/hr and median section drilling time is 14.9hrs. • Casing bit was drilled out with conventional PDC bit in 10-15mins. Total time drilling shoe track was 30-60mins• In the last 406m interval, operator managed to complete DwC in 14.75hrs, saving 47% drilling time compare to

conventional drilling


N.P.T. Performance and N.C.R. Status


Non-Productive Time (NPT)

2015

Q1 Q2 Q3 Q4 TOTAL

Number of Jobs 1 5 6 5 17

Operational Hours 64 139.5 123 122 447.5

NPT Hours 0 0 0 0 0

NPT Rate (%) 0 0 0 0 0

Jobs Efficiency (%) 100 100 100 100 100

Non-Conformity Reports

2015

Q1 Q2 Q3 Q4 TOTAL

Number of Jobs 1 5 6 5 17

N.C.R. 0 0 0 0 0

© 2016 Weatherford. All rights reserved.1212DRILLING WITH CASING

Case Histories and Time Savings


Case Histories 1：Operational TimeOMV DwC – Vienna Basin


RwC System Salvaged Client’s Well Date: 13 March 2013

Client: Shell Ukraine

Location: Kharkiv Region

Formation : Claystone & Sandstone

Hole Size: 12-1/4”

Casing: 9 7/8”, 66.9#, Q125R, Vam Top

Reaming Interval: 1800m - 3274m

Flow Rate: 194 - 211 gpm

Torque: 12 - 20k ft-lbs. (21,000 connection limit)

Value to Client

RwC™ system enabled casing to be set at planned TD where conventional methods proved unsuccessful by various operators

The client value for this project was estimated to be in excess of $1.0M, for eliminating the cost of plugging and abandoning this well and eliminating 8 months’ time for contingency operations.

14

500Ton OverDrive™

System9-7/8”x 12”

Defyer™

CleanReam

Case History 5

Previously spent over 3 months trying

unsuccessfully to complete the section,

each time TD was reached the drill string could not

be freely pulled out of the hole, requiring several days and sometimes

weeks for back-reaming.


Gazprom Russia DwC (12-3/4” x 15-1/2”) Utilizing Weatherford DPA drilling with casing bits to drill through permafrost

Completed a total of 22 jobs to date. ROP averaging 20m/hr.

Saved over 5M RUB using drilling with casing technology

Case History 3 15


DwC Operation Time Breakdown DwC Rate of Penetration (ROP)

Saved 23.3 days (65%)

Case History 1

Apache China Batch DwC Performance

The 13-3/8” DwC operation was carried out without incident or accident

All 24 wells reached planned casing setting depths. Drilled a total of 6149m in 12.8 days.

Average DwC distance was 256m to 296m MD.

Drilled and cemented final 8 wells totaling 2017m in the last 2.7 days, ~ 3 wells per day.

The DwC operation saved 23.3 days rig time or 65% versus plan. $1.5 MM US saved.

Cemented through the DwC spear as planned.

16


0

5

10

15

20

25

30

PL1

9-3-

C23

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45

TIM

E, H

RS

Average drilling operation time (including cement) : 9.26hr

Conventional drilling operation time (including cement) : 28hr

Case Histories 1：Operational TimeConocoPhillips China Batch DwC

Documents

Weatherford Drilling with Casing - Petroleum Club · Utilizing Weatherford DPA drilling with casing bits to drill through permafrost