2nd Annual WOODFORD Liquids-Rich Horizontal Targets

January, 2015Jeff D. Kelley

Petrophysical Analysis of Landing and Stimulation

in the Woodford

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• Horizontal Landing Considerations– Porosity & Permeability– Lithology– Geomechanics

• Stimulation Considerations– Faults & Fractures– Geomechanics

Petrophysical Analysis of Landing and Stimulation in the Woodford

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Geomechanical Calculations

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Brittle

ness

Aniso

tropic

Isotro

pic

220 psi412 psi

440 psi

365 psi

827 psi

813 psi

525 psi448 psi385 psi29 psi-54 psi64 psi34 psi

Geomechanical Interpretation

• Anisotropic model (3D) is essential to quantify stress in shale (difference in psi shown)

• 3D stress analysis only possible with SLB

sonic scanner• High anisotropy often

indicates fractures correlative to isotropic model results

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Geomechanical Implications

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• Well landed 5960’• Recommended

landing 5950’• 530 psi difference in

3D stress• 95 psi difference in

2D stress

Landing Assessment

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• 0-10% porosity (ave. 5%)• High GR• High TOC• 21 Stage Completion

Northern Oklahoma Woodford Lookback

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• Lower GR• Likely

upward stim growth

• ISIP’s low and similar

Northern Oklahoma Woodford Lookback Stages 1-5

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• Couldn’t pump Stages 8-9, problem with 7

• Stage 9 hit fractures

• ISIP’s similar

Northern Oklahoma Woodford Lookback Stages 6-9

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• Couldn’t pump Stage 15

• Stages 10-13 likely broke up

• Net pressure build in 14

Northern Oklahoma Woodford Lookback Stages 10-15

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• Net pressure build on Stages 17, 18, 21

• Fractures on 16, 19, 20 (maybe more)

Northern Oklahoma Woodford Lookback Stages 16-21

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• Top well stimulated first• Offset well bashed

Petrophysical Analysis of Landing and Stimulation – Miss Example

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• Landing is critical– Land in low 3D stress– Land in porosity

• Stimulation is critical– Recognize and respond to

fractures while stimulating– Proper well spacing

Petrophysical Analysis of Landing and Stimulation Conclusions

I would like to thank SandRidge for

allowing this talk