Locating the Distribution of Gas Enriched Area Using Seismic P-Wave Azimuth Attributes

All of research results indicated that coal is an orthogonal anisotropic medium. So it is an effective method that detects the fractures and forecasts the gas enriched area using seismic P-wave azimuth attributes. After 3D seismic P-wave data in Fowa mining area, Xinjing coalmine, Yangquan, are processed and 4 azimuth migrated data cubes are obtained from which several attributes related with the fractures in seam are extracted. Then the relative fracture density is calculated and the gas enriched area is predicted.