The nearly vertical strike-slip fault system is commonly developed in an exploration area in western China, which is a typical Orthorhombic medium. The obvious features of azimuthal anisotropy was observed on the OVT CIP gathers with TTI prestack depth migration imaging. In this paper, based on the wide azimuth seismic data, the application of multi-azimuth grid tomography velocity inversion and Tilted Orthorhombic Anisotropic (TORT) modeling technology are carried out, which effectively solves the problem of azimuth anisotropy caused by the strike-slip fault, improves the accuracy of depth migration imaging, and enhances the ability of characterizing the strike-slip fault.

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