A standard characterization of unconventional reservoirs is as a horizontally transverse isotropic (HTI) medium and there are many ways to interrogate such a medium with seismic data. In this study, two methods are independently employed to quantify the degree of HTI for a multicomponent 3D seismic survey in the Anadarko Basin, Oklahoma. The first is amplitude variation with azimuth (AVAz) using P-P data and the second is converted P-S wave splitting (SWS). Intriguingly, these methods produce dissimilar, and in some cases, opposite solutions. The discrepancy between the solutions may be due to their relative sensitivities – AVAz being an interfacial measure and SWS being a volumetric measure of anisotropy – or it may be a difference of the degree to which the analysis method adheres to the HTI assumption.

Presentation Date: Tuesday, October 13, 2020

Session Start Time: 8:30 AM

Presentation Time: 11:00 AM

Location: 351D

Presentation Type: Oral

Keywords:
reservoir characterization, frequency, selection, relaxation, optimization problem, objective function, waveform inversion, artificial intelligence, constraint, conventional fwi
Subjects:
Reservoir Characterization, Information Management and Systems, Seismic processing and interpretation
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2020. Society of Exploration Geophysicists
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