Research on seismic processing techniques oriented to shallow gas reservoir

Because of shortage of effective fold of shallow layer, great influence by near-surface variation and local data missing caused by acquisition, the conventional processing technique and follow for mid-depth exploration targets can not meet the requirement of the shallow processing requirement. In this paper, based on shallow data processing practice of multiple 3-D seismic survey of Daqing Changyuan, we researched and applied two corresponding technologies, including the multichannel weighted interpolation pre-stack data regularization and amplitude property constraint space-variant stretching and muting to improve the quality of shallow seismic data. The two technologies achieve good results in application.