Abstract: In order to improve the SNR and continuity of the exploration target strata of Wangji area in Biyang sag,enhance the imaging accuracy of breaking point and fracture surface,confirm the distribution of small faults and concealed faults,look for favorable faulted-block traps and faulted lithologic traps,aiming at the 3D seismic data full acquired in the area,on basis of the fine prestack pretreatment,the wide azimuth seismic data processing technology based on OVT has been firstly adopted.By fully utilization of abundant wave field information from3 D seismic data,the technology can conserve the offset and azimuth information in pre-stack migration,and then through azimuth anisotropy correction processing,the image precision of seismic data can be greatly improved.