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Proceedings Papers

Optimizing Depth Selection for Formation Pressure Testing in Complex Reservoirs – A Machine Learning Approach

M. K. Aljishi, M. Abdullah, D. Devegowda, C. S. Rai
Paper presented at the SPE Oklahoma City Oil and Gas Symposium, April 14–18, 2025
Paper Number: SPE-224365-MS
https://doi.org/10.2118/224365-MS
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View Paper titled, Optimizing Depth Selection for Formation Pressure Testing in Complex Reservoirs – A Machine Learning Approach
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Proceedings Papers

Study of Creep Behavior in Barnett Shale Using Nanoindentation

J. A. Acosta, M. E. Curtis, W. Wick, C. H. Sondergeld, C. S. Rai
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2088
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View Paper titled, Study of Creep Behavior in Barnett Shale Using Nanoindentation
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Proceedings Papers

A Comparative Study of Monotonic and Cyclic Injection Hydraulic Fracturing in Dry Tight Rocks Under Triaxial Stress

S. Goyal, M. E. Curtis, C. H. Sondergeld, C. S. Rai
Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1064
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View Paper titled, A Comparative Study of Monotonic and Cyclic Injection Hydraulic Fracturing in Dry Tight Rocks Under Triaxial Stress
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Proceedings Papers

SEM Investigation of the Fracture Network (Stimulated Reservoir Volume) Induced by Hydraulic Fracturing in Tennessee Sandstone

C. W. Ratzlaff, C. H. Sondergeld, C. S. Rai, M. E. Curtis, J. D. Jernigen
Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0490
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View Paper titled, SEM Investigation of the Fracture Network (Stimulated Reservoir Volume) Induced by Hydraulic Fracturing in Tennessee Sandstone
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Journal Articles

Laboratory Study of Ultrasonic Velocity Variations During CO 2 Flooding in Tuscaloosa Sandstone

A.. Mohapatra, C. S. Rai, C. H. Sondergeld, T.. Richards
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 22 (02): 520–530.
Paper Number: SPE-159515-PA
https://doi.org/10.2118/159515-PA
Published: 14 February 2019
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View articletitled, Laboratory Study of Ultrasonic Velocity Variations During CO 2 Flooding in Tuscaloosa Sandstone
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Journal Articles

Interpretation of Nuclear-Magnetic-Resonance Response to Hydrocarbons: Application to Miscible Enhanced-Oil-Recovery Experiments in Shales

Son T. Dang, C. H. Sondergeld, C. S. Rai
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 22 (01): 302–309.
Paper Number: SPE-191144-PA
https://doi.org/10.2118/191144-PA
Published: 31 July 2018
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View articletitled, Interpretation of Nuclear-Magnetic-Resonance Response to Hydrocarbons: Application to Miscible Enhanced-Oil-Recovery Experiments in Shales
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Proceedings Papers

Mapping Hydraulic Fracture in Pyrophyllite Using Shear Wave

P. Bhoumick, C. Sondergeld, C. S. Rai
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-151
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View Paper titled, Mapping Hydraulic Fracture in Pyrophyllite Using Shear Wave
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Proceedings Papers

Stimulated Reservoir Volume Evaluation Using Shear Wave

P. Bhoumick, S. T. Dang, A. Damani, C. Sondergeld, C. S. Rai
Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0409
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View Paper titled, Stimulated Reservoir Volume Evaluation Using Shear Wave
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Proceedings Papers

Simultaneous Estimation of Intrinsic Permeability, Effective Porosity, PoreVolume Compressibility, and Klinkenberg-Slip Factor of Ultra-Tight Rock Samples Based on Laboratory Pressure-Step-Decay Method

Y. Dadmohammadi, S. Misra, C. H. Sondergeld, C. S. Rai
Paper presented at the SPE Low Perm Symposium, May 5–6, 2016
Paper Number: SPE-180266-MS
https://doi.org/10.2118/180266-MS
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View Paper titled, Simultaneous Estimation of Intrinsic Permeability, Effective Porosity, PoreVolume Compressibility, and Klinkenberg-Slip Factor of Ultra-Tight Rock Samples Based on Laboratory Pressure-Step-Decay Method
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Journal Articles

A New Approach to Measuring Organic Density

S. T. Dang, C. H. Sondergeld, C. S. Rai
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 57 (02): 112–120.
Paper Number: SPWLA-2016-v57n2a3
Published: 01 April 2016
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View articletitled, A New Approach to Measuring Organic Density
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Proceedings Papers

Study of Kerogen Maturity using Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA)

S. T. Dang, C. H. Sondergeld, C. S. Rai
Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175149-MS
https://doi.org/10.2118/175149-MS
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View Paper titled, Study of Kerogen Maturity using Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA)
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Proceedings Papers

Nanoindentation Creep Measurements on Shale

S. Mighani, S. Taneja, C. H. Sondergeld, C. S. Rai
Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-148
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View Paper titled, Nanoindentation Creep Measurements on Shale
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Proceedings Papers

Stress Dependency of Rock Tensile Strength

S. Mighani, C. H. Sondergeld, C. S. Rai
Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-147
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View Paper titled, Stress Dependency of Rock Tensile Strength
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Journal Articles

Nuclear-Magnetic-Resonance Response of Brine, Oil, and Methane in Organic-Rich Shales

A.. Tinni, E.. Odusina, I.. Sulucarnain, C.. Sondergeld, C. S. Rai
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 18 (03): 400–406.
Paper Number: SPE-168971-PA
https://doi.org/10.2118/168971-PA
Published: 31 March 2015
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View articletitled, Nuclear-Magnetic-Resonance Response of Brine, Oil, and Methane in Organic-Rich Shales
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Proceedings Papers

Relationship Between Organic Shale Microstructure and Hydrocarbon Generation

M. E. Curtis, C. H. Sondergeld, C. S. Rai
Paper presented at the SPE Unconventional Resources Conference-USA, April 10–12, 2013
Paper Number: SPE-164540-MS
https://doi.org/10.2118/164540-MS
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View Paper titled, Relationship Between Organic Shale Microstructure and Hydrocarbon Generation
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Proceedings Papers

The Development of Organic Porosity in the Woodford Shale Related To Thermal Maturity

M. E. Curtis, B. J. Cardott, C. H. Sondergeld, C. S. Rai
Paper presented at the SPE Annual Technical Conference and Exhibition, October 8–10, 2012
Paper Number: SPE-160158-MS
https://doi.org/10.2118/160158-MS
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View Paper titled, The Development of Organic Porosity in the Woodford Shale Related To Thermal Maturity
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Proceedings Papers

Estimation Of Uncertainty In Microseismic Event Location Associated With Hydraulic Fracturing

A. F. Castano, C. H. Sondergeld, C. S. Rai
Paper presented at the Tight Gas Completions Conference, November 2–3, 2010
Paper Number: SPE-135325-MS
https://doi.org/10.2118/135325-MS
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View Paper titled, Estimation Of Uncertainty In Microseismic Event Location Associated With Hydraulic Fracturing
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Proceedings Papers

Microseismic Mapping of Laboratory-Induced Hydraulic Fractures in Anisotropic Reservoirs

Y. Chitrala, C. Moreno, C. H. Sondergeld, C. S. Rai
Paper presented at the Tight Gas Completions Conference, November 2–3, 2010
Paper Number: SPE-138441-MS
https://doi.org/10.2118/138441-MS
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View Paper titled, Microseismic Mapping of Laboratory-Induced Hydraulic Fractures in Anisotropic Reservoirs
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Proceedings Papers

Micro-Structural Studies of Gas Shales

C. H. Sondergeld, R. J. Ambrose, C. S. Rai, J. Moncrieff
Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131771-MS
https://doi.org/10.2118/131771-MS
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View Paper titled, Micro-Structural Studies of Gas Shales
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Proceedings Papers

Petrophysical Considerations in Evaluating and Producing Shale Gas Resources

C. H. Sondergeld, K. E. Newsham, J. T. Comisky, M. C. Rice, C. S. Rai
Paper presented at the SPE Unconventional Gas Conference, February 23–25, 2010
Paper Number: SPE-131768-MS
https://doi.org/10.2118/131768-MS
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View Paper titled, Petrophysical Considerations in Evaluating and Producing Shale Gas Resources
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