The space of fracture reservoir in granite buried hills varies sharply with strong heterogeneity and very difficult to predict. Conventional fracture prediction methods based on narrow-azimuth post-stack seismic data have low prediction accuracy. OVT pre-stack gather retains the information of offset and azimuth, reflects the anisotropic characteristics of fractures and can be effectively used to predict the strength and strike of fracture in granite buried hills. In this paper, based on the analysis of anisotropy of OVT gather data, according to the geological characteristics of granite fractures, optimizes the sensitive offset and azimuth OVT gather data, uses the P-wave azimuth anisotropy technique to predict the strength and strike of fractures. The prediction coincides well with the drilling results, which can provide an important guidance for the exploration and development of granite buried hill in the research area.

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