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Ahmad Ghassemi

Dr. Ahmed Ghassemi

McCasland Chair Professor

Office:    SEC 1314
Phone:    405-325-4347

Research Interests: Geomechanics applied to petroleum and geothermal reservoir development, Modeling of hydraulic fracturing and faulting, Reactive fluid flow in fractures, and constitutive modeling for chemically-active rocks

View Bio | Download CV (PDF) | Website


B.Sc., Geological Engineering, University of Oklahoma
M.S., Engineering Geology, South Dakota School of Mines, 1988
M.S., Geomechanics, University of Minnesota, 1990
Ph.D., Geological Engineering, University of Oklahoma, 1996


Ahmad Ghassemi is the McCasland Chair Professor of Petroleum Engineering at the University of Oklahoma where he teaches Introduction to Rock Mechanics and Advanced Rock Mechanics I & II. He is the Director of The Halliburton Rock Mechanics Laboratory located in Sarkeys Energy Center room C-103. He is involved in the following projects:

  • Hydraulic fracture propagation modeling, stimulated volume
  • Experimental determination of reservoir rock properties
  • Geothermal Energy Research
  • Coupled geomechanics/fluid flow modeling: including naturally fractured & heavy oil reservoirs
  • Poro-thermoelasticity
  • Wellbore stability analysis, shale instability

Awards and Honors

  • Geothermal Resources Council Special Achievement Award for outstanding contributions to the modeling of coupled chemical-thermal-mechanical processes and rock-fluid interactions in geothermal reservoirs
  • Texas A&M University, College of Engineering William Keeler Faculty Fellow (2008-09)
  • American Rock Mechanics Association M.S. Thesis of the Year Awarded to former student Andrew Nygren, 2006
  • University of North Dakota College of Engineering & Mines Olson Professor, 2003-2004
  • University of North Dakota Graduate School Summer Professorship Award, 1998, 2000

Professional Activities

  • Editor-in-Chief, Geothermics(2010-2014).
  • Panel Leader for the Geomechanics and Geochemistry working group in the Carbon Sequestration-Geothermal Energy Systems Geosciences Workshop, U.S. Department of Energy; June 15-16, 2010, Washington, DC.
  • EPA Hydraulic Fracturing Technical Workshop Team Leader, Impacts of HF on Natural Transport Systems Washington DC., March, 27,2011.
  • Discussion Leader for the Theory/Modeling Theme, DOE workshop on induced seismicity, Stanford University. Identify the critical issues for understanding and mitigation of induced seismicity.

Selected Publications

  • Vachaparampil, A., and Ghassemi, A. 2017. Failure Characteristics of Three Shales under True-Triaxial Compression. Int. J. Rock Mech. 100, 151-159.
  • Kumar, D., and Ghassemi, A. 2017. Three-Dimensional Poroelastic Modeling of Multiple Hydraulic Fracture Propagation form Horizontal Wells. Int. J. Rock Mech. (In Press).
  • Gao, Q., Ghassemi, A., 2017. Pore pressure and stress distributions around a hydraulic Fracture in heterogeneous rock. Rock Mech Rock Eng. 50(12), 3157–3173.
  • Sesetty, V. K., Ghassemi, A. 2017. Effect of rock anisotropy on wellbore stresses and hydraulic fracture propagation. Geophysics (In Press).
  • Kumar, D., and Ghassemi, A. 2016. Three-Dimensional modeling and analysis of sequential and simultaneous hydraulic fracturing of horizontal wells. J. Petroleum Science and Engineering, 46, 1006-1025.
  • Safari, R., Ghassemi, A. 2016. Three-Dimensional poroelastic modeling of injection induced permeability enhancement and micro-seismicity. Int. J. Rock Mechanics. 84,  47–58.
  • Huang, K., and Ghassemi, A. 2016. Modeling 3D thermal fracture propagation by transient cooling using virtual multidimensional internal bonds. Int.  J. Num. and Anal. Methods in Geomech. doi: 10.1002/nag.2526.
  • Wang, J.,  Woodong,  J., Li, Y., and Ghassemi, A. 2016.  Geomechanical Characterization of Newberry Tuff. Geothermics Special Issue on EGS. doi:10.1016/j.geothermics.2016.01.016.
  • Ghassemi, A., and Tao, Q. 2016. Thermo-poroelastic effects on reservoir seismicity and permeability change. Geothermics Special Issue on EGS. doi:10.1016/j.geothermics.2016.02.006.
  • Zhang, Z. Peng, S., Ghassemi, A., Ge, X. 2016. Simulation of complex hydraulic fracture generation in reservoir stimulation. J. Petroleum Science and Engineering, 146, 272–285.
  • Huang, J., and Ghassemi, A. 2015. A poroelastic model for evolution of fractured reservoirs during gas production. J. Pet. Sci. & Engng. 10.1016/j.petrol.2015.10.007.
  • Zhang, Z. Ding, J., Ghassemi, A., Ge, X. 2015. A hyperelastic-bilinear potential for lattice model with fracture energy conservation. Engineering Fracture Mechanics. 142, 220–235.
  • Safari, R., Ghassemi, A. 2015. 3D thermo-poroelastic analysis of fracture network deformation and induced micro-seismicity in enhanced geothermal systems. Geothermics, 58, 1-14.
  • Tarasovs, A. and Ghassemi, A. 2014. Self-similarity and scaling of thermal shock fractures. Physical Review E 90 (1), 012403-1-6.
  • Sesetty, V. and Ghassemi, A. 2013. Numerical simulation of sequential and simultaneous hydraulic fracturing. In: Effective and Sustainable Hydraulic Fracturing. Edited by Andrew P. Bunger, John McLennan and Rob Jeffrey, ISBN 978-953-51-1137-5, Hard cover, 1000 pages, Publisher: InTech. Pp. 680-691.
  • Ghassemi, A., and Rawal, A. 2013. Rock failure and micro-seismicity around hydraulic fractures. J. Pet. Sci. and Engrg. DOI information: 10.1016/j.petrol.2013.06.005.