Characterizing a fault-zone and associated fractures using lab experiments and attribute-based seismic analysis: An example from Woodford Shale, Anadarko Basin, Oklahoma

Abstract

Woodford Shale exhibits complex geophysical features (e.g., sub-seismic fractures) that are critical for gas exploration. Seismic attributes are effective tools in characterizing the patterns of discontinuities within shale reservoirs. In this study, we characterize a fault/fractures system within Woodford shale by integrating seismic attributes analyses and lab experiment modeling for better interpretation of this system.

Seismic attributes and the road ahead

“…videos produced by Heller and colleagues at the University of Wyoming) and linking structural deformation patterns to fractures by deforming clay models (e.g. Liao et al, 2013). The attribute expression of fractured basement, igneous extrusives and intrusives, hydrothermally altered dolomite, diagenetically altered chert, and paleo glide blocks, is not yet adequately documented.…”

Correlating curvature to fault propogation in clay modeled transfer zones

“…Events not clearly seen in the 3D seismic volume can still give a characteristic response with seismic attributes. Liao et al (2013) used clay models of a strike slip fault in order to better understand secondary features such as fractures, splay shears and Riedel faults. These features were below seismic wavelet resolution however, with the help of the clay models Liao was able to predict these secondary features using seismic attributes characteristic responses in a 3D seismic data volume.…”