Locating the distribution of coalbed methane enriched area using seismic P-wave data

It is an important problem to be urgently settled that the coalbed methane enriched area must be detected and the possible gas outburst position should be predicted during the coal mine production.Based on the azimuth anisotropy of seismic P-waves to fractured strata and the prediction principle of the fracture orientation and density utilizing seismic attribute variation with azimuth,fracture zones are detected using seismic P-wave azimuth attributes.Affter 3D seismic P-wave data in West 3 mining area,Zhangji coalmine,Huainan,are processed,6 azimuth data cubes are obtained from which several attributes related with coal and roof/bottom fracture are extracted,and then,fracture density and orientation are measured.This method is a new tool for locating the distribution of coalbed methane enriched area.