Abstract
We performed a case study to use PS converted waves for fracture detection for a 3D land dataset. In this study, the azimuthal variation of NMO velocity of PS converted waves is used to detect the fracture properties. The direction of maximum velocity indicates the fracture direction and the velocity perturbation indicates the anisotropy. The stack image when compensated for azimuthal velocity variation showed enhancements in terms of reflection and fault definition. The mapped distribution of the direction of maximum velocity and the velocity perturbation outlined the fracture system of the reservoir and showed a clear trend between the direction of maximum velocity and the Daqing anticline location.
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