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The AAPG/Datapages Combined Publications Database

Oklahoma City Geological Society


The Shale Shaker
Vol. 63 (2013), No. 5. (March/April), Pages 364-375

Poststack Acoustic Impedance Characterization of a Mississippian Tripolitic Chert Reservoir, Osage County, Oklahoma

Benjamin L. Dowdell, Henry White, Kurt J. Marfurt


With the advent of horizontal drilling and hydraulic fracturing in the Midcontinent U.S.A., fields once thought to be exhausted are now experiencing renewed exploitation. However, traditional Midcontinent seismic analysis techniques no longer provide satisfactory reservoir characterization for these unconventional and resource plays such as the Mississippi Lime. New seismic analysis methods are needed to properly characterize these radically innovative play concepts. Seismic attributes such as impedance inversion are sensitive to lithology while coherence and curvature are sensitive to lateral changes in waveform and structure. Our objective is to map tripolitic high-porosity chert sweet spots within a highly fractured Mississippi Lime reservoir which also contains tight nonporous chert using impedance inversion correlated with surface seismic attributes and well-log information. Our study area is located in Osage County, Oklahoma.

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