Abstract:The studies of the predecessors showed that current isotropic and anisotropic migrated imaging theories are difficult in effectively eliminate the influence of anisotropie faulted belts, for example, the issue of smeared imaging for faulted zone (shadow area) can he often met in prestaek depth migration processing. For that reason, the paper carried out appreciated study of effects of wide/narrow azimuth survey by using 3-D full-azimuth seismic data acquired on piedmont fracture belts of Tulufan Basin in the west of China and taking fracture belts and its relevant fractured reservoir as exploration targets. The data processing in the study was ordinary processing in time domain with relative amplitude reservation. It is considered through analyzing the differences between seismic at tributes information such as stack sections with different azimuth angles, gathers with same CDP analyzed points and coherent data volume in different azimuths that in a condition of comparatively plain strata,relative simple velocity fields and having certain signal to-noise ratio, using wide azimuth (aspect is greater than 0.5) survey can obtain better imaging results of multi oriental minor faults than by narrow azimuth survey in developed fracture belts and can also obtain more distinct faulted zone and spatial scope of reservoir at the same time.