Abstract：Using seismic data acquired by common field geometry to carry out the prestack migration by integration approach does not meet the need of prestack migration, especially processing the 3-D pieces-linked seismic data.Since the data in different blocks have seriously inconsistent problem, there are more factors unsuitable for prestack imaging.In view of the demand on prestack depth processing of GX fault belt and characters of the prestack data, the paper studied the regularized processing technique of prestack seismic data and the tricks of the usage and parameters selection of prestack random noise attenuation technique, and presented solution.It is showed by real seismic data processing that the configuration of fault planes in seismic data of GX fault belt was more distinctive, the imaging of buried hill and its interior was clearer, which solved the inaccurate issue of poststack migration positioning caused by lateral velocity variation and achieved ideal prestack depth migration results.
