The Research On Seismic Data Processing Method For Wangji-xinzhuang Area In Biyang Sag

Wangji-xinzhuang locates the strip between the deep sag area and the north slope.The poor emitting/ receiving condition due to the complex surface and the strong lateral velocity variation of the low velocity layer(LVL) ,there exsist sever static correction problem and strong disturbance in the original records.Besides, there exsist great difference in the amplitude frequencies of the seismic data.Moreover,there exsists complex fault blocks in the undersurface .Therefor,this leads to the precision of the structure imaging which is dissatifaction .It is the main problem for the finding oil and gas resource to make the structure clearly.The article emphaisize on static ,surface consistent processing and pre_stack de_noising which aims to some noise disturbance to increase the S/N ratio and resolution of the seismic data and improve the quality of the seismic data .A set of methods in seismic data processing have been established to solve the problem which exsist in the North slope and to meet with the need of forther geological research. On the aspect of increasing the S/N ratio ,we adopt all sorts of the pre_stack de_noising technique, such as adaptive low frequency noise suppression ,high_energy disturbance suppression .We apply the methods and achive a better results.Meanwhile,we adopt the matched static correction technique to solve the static problem , the surface_consistent processing technique to remove the difference in amplitude of the seismic data .By the research of pre-stack de_noising, static and the surface consistent processing methods, primarily formed a set of processing methods. The practice result showed that S/N & resolution of new migration sections which applied in the result of research has improved contrast former section, obtaining a distinct geological result..