Abstract:The surface and subsurface are very complex on Shengjinkou west mountain,which resulted in poor shooting and receiving conditions,the raw seismic data have lower signal-to-noise ratio and large static correction,causing difficulty for data imaging.In view of above difficulties,in seismic dato acquisition,we finely designed geometry and adopted brick pattern geometry(6 lines and 18 shots);according to different surface and lithology distribution,we divided the work area into mountains( foreland zone),farmland and Gobi gravel zone and adopted dynamite source and vibroseis to shot separately;mainly taking deep uphole survey as a basic tool and combing with shallow refraction survey,the precision of model-building of surface has been improved and then the structural model of surface in whole work area has been built up by static correction database.In seismic data processing,taking improvement of signal-to-noise ratio and highlighting the information of lower plate of fault as main objects,the following processing has been well-done:static corrections,prestack noise-removing,wavelet shaping,deconvolution and migration;the velocity scanning has been carried out many times in 3-D migration to build more precious migration velocity fields.The resulted seismic data from using the set of mountainous 3-D seismic acquisition and processing methods can meet the needs of seismic data interpretation in that region.