1. 2nd Annual WOODFORD Liquids-Rich Horizontal Targets
January, 2015Jeff D. Kelley

2. Petrophysical Analysis of
Landing and Stimulation
in the Woodford

3. www.SandRidgeEnergy.com3
• 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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Brittleness
Anisotropic
Isotropic
220 psi
412 psi
440 psi
365 psi
827 psi
813 psi
525 psi
448 psi
385 psi
29 psi
-54 psi
64 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

15. I would like to thank
SandRidge for
allowing this talk