Petroleum Geosciences


The Petroleum Geosciences Research Group continues the long history of petroleum geology research at OSU.  Our team integrates traditional core- and outcrop-based research with geophysics, geochemistry and remote sensing to develop depositional and diagenetic models to explain reservoir and seal evolution in conventional and unconventional petroleum systems. Our expertise in siliciclastic and carbonate stratigraphy as well as stratigraphy, sedimentation, paleontology, geochemistry, petrology, geophysics, structure, and spectral analysis, tectonics and petrography allows us to model the evolution of petroleum systems from water chemistry during deposition to post-tectonism, late stage basin fluid migration from the molecular scale to the basin scale. Our team also evaluates carbon sequestration, geologic carbon storage, and fluid-disposal in petroleum reservoirs, enhanced oil and gas recovery, and reservoir compartmentalization.


Faculty contacts include:

Michael Grammer, Director of Petroleum Geoscience, Professor and Chesapeake Chair of Petroleum Geoscience (carbonate sedimentology, reservoir characterization, petrophysics)
•    high resolution sequence stratigraphy
•    integrated reservoir characterization and modeling
•    pore system vs. permeability in conventional and unconventional carbonate reservoirs  


Jay Gregg, Professor and V. Brown Monnett Chair of Petroleum Geology (Carbonate petrology, diagenesis, and sedimentary geochemistry)
• Diagenesis and porosity evolution of carbonate reservoirs. 
• Regional diagenetic patterns and basinal fluid flow. 
• Relationships between petroleum systems and sediment hosted Mississippi Valley-type base metal deposits.
• Dolomitization of mixed carbonate and silicaclastic sediments and calcareous shale reservoirs. 


Todd Halihan, Professor (Hydrogeology of fractured and karstic reservoirs)
•    Electrical evaluation of petroleum signatures in laboratory tank environments
•    Evaluation of petroleum seep pathways at mixed waste sites
•    Elimination of monitoring wells as part of petroleum remediation strategies

Priyank Jaiswal, Assistant Professor (seismology, petroleum systems, gas hydrates)
• Rock property estimation from seismic inversion
• Artificial intelligence driven seismic facies identification and classification
• Reservoir architecture from seismic attributes
• High performance computing
• Poroelastic modeling
• Induced Seismicity

Jack Pashin, Professor and Devon Chair of Basin Research (sedimentary geology and basin analysis)
•    Shale gas reservoir characterization
•    Coalbed methane systems
•    CO2-enhanced recovery and geologic storage
•    Sedimentary geology
•    Structure and tectonics
•    Basin analysis

Jim Puckette, Associate Professor (sedimentology and stratigraphy, sedimentary geochemistry, petroleum geology)
•    Regional outcrop and subsurface stratigraphy
•    Correlation of outcrop to subsurface
•    Hydrocarbon fluid analysis
•    Unconventional (shale) analysis and characterization

Tracy Quan, Associate Professor (geochemistry of petroleum systems)
•    Geochemical assessment of unconventional hydrocarbon resources
•    Characterization of the initial water column redox conditions, and their impact the development of the hydrocarbon resource play.  
•    Sedimentary nitrogen isotope measurements are reliable proxies for water column redox state in sediments that have been unaltered by catagenesis.  
•    Biomarker analysis and petroleum and source rock fingerprinting.

Javier Vilcáez, Assistant Professor (Geofluids)
• Multiphase reactive transport modeling for energy and mineral resources recovery
• Environmental impacts of infiltrated fluids in shale gas production
• Microbial enhanced oil recovery
• Geological storage of CO2
• Heavy oil upgrading with supercritical water


Ahmed Ismail, Assistant Professor (Multicomponent seismic exploration)
• High resolution P-and S-wave seismic for shallow gas detection.
• Seismic imaging below gas clouds
• Stress characterization
• Fracture characterization (orientation and density) 
• Groundwater exploration and aquifer characterization
• Near-surface velocity model building from surface wave inversion.