Buchanan Ingersoll & Rooney PC
Automatic focus identification method and system for Karst cave reservoir
Disclosed are an automatic focus identification method and a system for a Karst cave reservoir. According to the method, velocity replacement is performed based on a pre-stack time migration velocity model to obtain a plurality of replacement migration velocity volumes; pre-stack time migration is performed based on the plurality of replacement migration velocity volumes to obtain a plurality of post-stack seismic data volumes; a three dimensional cube window is selected based on a seismic response characteristic of the Karst cave reservoir; sparse statistical data of a seismic trace or sparse statistical data of a seismic trace attribute of each of the post-stack seismic data volumes in the three dimensional cube window are obtained respectively; and an optimized migration velocity and an optimized seismic trace are obtained through optimization determination.
SINOPEC GEOPHYSICAL RESEARCH INSTITUTE CHINA PETROLEUM & CHEMICAL CORPORATION
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inventional inventional inventional inventional
Shixing Jinliang Kai
Wang Tang Xu