Seismic Data Processing Technology Research And Apply In South Foothill Belt Of Jungger Basin

Seismic exploration has become one of the most important technologes in the area of exploring petroleum. It plays vital function in exploring of the south foothill belt of Jungger Basin. Because of complex the earth's surface and subsurface structure, there are a lot of difficulty in the other area. Static correct, eliminating perstack noise,migration are three critical technology.In the article, the fundamental and technology of static correction, eliminating perstack noise, migration are discoursed upon roundly and systematically. Accroding to applying methods in the area of foothill belt of Jungger Basin , I can arrival a conclusion that refraction statics is a effective method to correcting the static corrections and tomographic inversion can solve the static corrections problems effectively in the area.Because of complex surface , there are a variety of noise, we must make it clear how the noise produce and investigate methods to eliminate noise before stack. There are high and steep obliquity structure in foothill belt area, normal migration methods don't meet the demand of exploration. So migration adapting to the area must be investigated to solve seismic imaging issue, above all perstack migration theology is most important. According to a lot of theoretical investigation, the perstack depth migration is the most effective method to imaging seismic , because of the variety of reasons, perstack time migration is applied broadly.In fact, when apply these methods above, we can find that it is most important how to resvolve the statics correction problem. First we should deal with statics correction problem. Secondly apply variety of methods to eliminate prestack noise. Finally, on the base of high Signal-to-Noise, we can carry through velocity analysis, stack imaging, poststack migration, perstack time migration, indeed perstack depth migration.