Abstract
Anisotropic information of pre-stack 3D azimuth P wave from seismic data is already one of the most efficient and economic methods from reservoir fracture examination, which requires a wide azimuth for seismic data gathering. By forward simulation of the geophysical characteristics in fractured reservoirs, the relationship between azimuth distribution areas of seismic data gathering and fracture direction is studied. Narrow azimuth for seismic data gathering is also somewhat effective to describe fracture distribution characteristics. In addition, significant seismic property difference (amplitude, damping and frequency) can be made in fractured reservoirs, thus, fracture can be effectively examined by the seismic information of different offsets. All the results in the paper get excellent practical application.
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