| In order to study the seismic wave field characteristics of anisotropic media in fractured tight sandstone gas reservoirs in western Sichuan,this paper carries out petrophysical modeling based on Hudson equivalent medium and seismic wave field forward modeling based on propagation matrix theory.The AVO qualitative/quantitative analysis of the longitudinal and converted channel sets obtained through the actual log data simulation is obtained,and the seismic sensitivity properties related to the crack orientation,fracture density and gas saturation are obtained.Furthermore,in order to improve the existing anisotropic seismic wave field forward modeling software,the seismic wave field forward modeling module based on propagation matrix theory is rewritten and optimized,and transplanted into the Geo East software platform.This module not only ensures the ease of use of the software,but also includes good maintainability and simplifies the forward modeling workflow of seismic exploration. |
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