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2012 Williston Basin Petroleum Conference Bismarck, ND May 22 - 24, 2012 Number of Completion Stages – Does it Matter Jim Thompson Bakken D&C Manager Marathon Oil Corporation

2012 Williston Basin Petroleum Conference

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2012 Williston Basin Petroleum Conference. Number of Completion Stages – Does it Matter . Bismarck, ND May 22 - 24, 2012. Jim Thompson Bakken D&C Manager Marathon Oil Corporation. Topics of Discussion. Bakken completion stages Effect on IP and cumulative production - PowerPoint PPT Presentation

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Page 1: 2012 Williston Basin Petroleum Conference

2012 Williston Basin Petroleum Conference

Bismarck, NDMay 22 - 24, 2012

Number of Completion Stages – Does it Matter

Jim ThompsonBakken D&C Manager

Marathon Oil Corporation

Page 2: 2012 Williston Basin Petroleum Conference

2

Topics of Discussion

Bakken completion stages Effect on IP and cumulative production Optimum number of stages– Other considerations

Proppant types and selection criteria Function Selection Transport

Messenger word of thanks Drilling & Completion Team SS Team– Ahmad Salman

UT Team– Steve Baumgartner

Marathon Oil Corporation

Page 3: 2012 Williston Basin Petroleum Conference

3

9000+’

6” Hole

Single Stage Completions OH Uncemented preperforated liner Crosslinked polymer , linear gel, and/or slickwater fracs

Diverter slugs or balls

9-5/8”

7”

16”

UBS

LBS

MBS

Bakken Completion Stages

Marathon Oil Corporation

Page 4: 2012 Williston Basin Petroleum Conference

4

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 5: 2012 Williston Basin Petroleum Conference

5

9000+’

6” Hole

Multi Stage Completions Plug and Perf Frac Sleeves Rapid adoption of 10 stage Sleeve Technology

― ¼” graduated ball seats Linear Gel and Crosslinked polymer fracs

9-5/8”

7”

16”

UBS

LBS

MBS

Marathon Oil Corporation

Bakken Completion Stages

Page 6: 2012 Williston Basin Petroleum Conference

6

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 7: 2012 Williston Basin Petroleum Conference

7

UBS

LBS

MBS

Evolved to 20 stage sleeve technology with 1/8” graduated ball seats Decreased spacing between stages Increased amount of stimulated rock volume (SRV)– Versus 10 stage

Progression to 40 stages continued with move to 1/16” graduated ball seats Number can be tweaked to operators preference with mixing of sleeves and

plug and perf typically referred to as hybrid completion

Marathon Oil Corporation

Bakken Completion Stages

Page 8: 2012 Williston Basin Petroleum Conference

8

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Bakken Completion Stages

Page 9: 2012 Williston Basin Petroleum Conference

9

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 10: 2012 Williston Basin Petroleum Conference

10

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage 20-24 Stage

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 11: 2012 Williston Basin Petroleum Conference

11

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage 20-24 Stage 25-29 Stages

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 12: 2012 Williston Basin Petroleum Conference

12

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage 20-24 Stage 25-29 Stages 30-34 Stages

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 13: 2012 Williston Basin Petroleum Conference

13

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage 20-24 Stage 25-29 Stages 30-34 Stages 35-39 Stages

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 14: 2012 Williston Basin Petroleum Conference

14

Bakken Completion Stages

0 50 100 150 200 250 300 350 4000

20000

40000

60000

80000

100000

120000

140000

160000

180000Bakken #Frac Stages Comparison

NDIC Posted Production Data

0-1 Stage 10-14 Stage 15-19 Stage 20-24 Stage 25-29 Stages 30-34 Stages 35-39 Stages

40 Stages

Days of Production

Cum

ulati

ve O

il Pr

oduc

tion,

MBB

L

Marathon Oil Corporation

Page 15: 2012 Williston Basin Petroleum Conference

15

0 50,000 100,000 150,000 200,000 250,0000

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

12 Month Cumulative Oil Production (BBL)

Cum

ulati

ve D

istrib

ution

Fun

ction

Marathon Oil Corporation

Open Hole

6 Stage Completion

9 Stage Completion

19 Stage Completion

20 Stage Completion

Mean 12 Month Cumulative

Oil Production

(BBL Oil)

41,000 45,000 59,000 88,000 91,000*

2006 – 2007 Open Hole Wells

2008Staged Wells

2009Staged Wells

2010Staged Wells

2008 Stage Completion WellsAverage # of Stages: 6Average Proppant Density (lb/ft): 144

2009 Stage Completion WellsAverage # of Stages: 9Average Proppant Density (lb/ft): 171

2006 – 2007 Open Hole Completion WellsAverage Proppant Density (lb/ft): 71

2010 Stage Completion WellsAverage # of Stages: 19Average Proppant Density (lb/ft): 2682011

Staged Wells2011 Stage Completion WellsAverage # of Stages: 20Average Proppant Density (lb/ft): 228

2011 staged wells cumulative oil production based on extrapolationData obtained from NDIC public information.

2006 – 2011 Dunn County Middle Bakken Wells

Page 16: 2012 Williston Basin Petroleum Conference

16

Conclusions Number of completion stages does have an effect on IP and cumulative production

during first year– Increases stimulated rock volume

Other considerations which may effect optimum number of stages– Geology or rock quality

• Understand natural fractures to determine vertical vs horizontal growth dominance– Flowback practices

• Conservative or Aggressive choke management– Be consistant to evaluate proper number of stages

– Frac design per stage• Fluid volumes• Proppant volumes• Proppant type• Consistency is key to determine effect of varying the number of stages– Change one variable at a time keeping others the same– Understand cost implications of each variable for well economic considerations

Marathon Oil Corporation

Bakken Completion Stages

Page 17: 2012 Williston Basin Petroleum Conference

2012 Williston Basin Petroleum Conference

Bismarck, NDMay 22 - 24, 2012

Proppants and Selection Criteria

Jim ThompsonBakken D&C Manager

Marathon Oil Corporation

Page 18: 2012 Williston Basin Petroleum Conference

18Marathon Oil Corporation

Proppant Types and Selection Criteria

%Fines per API/ISO procedure

Page 19: 2012 Williston Basin Petroleum Conference

19Marathon Oil Corporation

Proppant Types and Selection Criteria

Page 20: 2012 Williston Basin Petroleum Conference

20

Proppant Function Keep the created fracture (length and height) open

Provide conductivity contrast to accelerate flow to the wellbore

Proppant Selection Cost

Proppant pack conductivity – minimum 500 md-ft– Size – as large as you can place with frac design – Effective Closure Stress on Proppant = Minimum Horizontal Stress – Fracture Face Flowing

Pressure (Pressure in the Producing Propped Fracture)– Fracturing fluid damage – slick water, linear gel, cross link fluids

Crush test– Less than 10% fines generated at maximum closure stress

Predict-K– Tool to predict proppant pack conductivity of planned fracture treatments – Evaluate conductivity of what can be placed, 2 lb/ft2 of 20/40 versus 2.5 lb/ft2 of 30/50,

etc.

Marathon Oil Corporation

Proppant Types and Selection Criteria

Page 21: 2012 Williston Basin Petroleum Conference

21

Proppant Selection (cont’d) Proppant pack conductivity over the life of well– Production damage (scale, salt, fines, etc.)– Proppant degradation from stress cycling– Embedment into formation face

Proppant Transport Larger proppant provides higher conductivity but may be more difficult to place– Settling rate increases in proportion to the diameter squared

Bridging – Perforation diameter should be six times larger than proppant diameter– Pumping hydraulic fracture width should be three times larger than proppant diameter

Marathon Oil Corporation

Proppant Types and Selection Criteria

Page 22: 2012 Williston Basin Petroleum Conference

22

Questions

Thank You