The Study Of The Seismic Data Processing Method In Suibin Area

The two-dimensional seismic exploration area in the north of SanJiang River Suibin depression basin locates in Huachuan county,Luobei county and Suibin county in Heilongjiang province. In this area, the underground resources are very rich. But because of the influences of surface stimulate condition, multiple wave and refracted wave interference, that leads to the low seismic data signal to noise ratio relatively. It also places restrictions on solving problems in geological. So it is very necessary to study and establish a set of seismic data processing method which is suit for this region.In the north of Suibin depression area, the seismic data is acquisitioned by using double and four lines receiving way. It increases the fold and enhances the signal to noise ratio. It suppresses partial noise, but the data signal to noise ratio is still low. So the author confirms the scientific treatment scheme and the processing parameter of the seismic data through careful scientific testing which is based on a detailed study of the original seismic data. The section results are not only signal to noise ratio, but also the resolution which are met and exceeded the party A’s requirements. The noise suppression, deconvolution, velocity analysis and residual static correction test, stacking test and migration methods are studied to improve the quality of seismic data in the process. The problem of in phase stacking is solved by applying the technology of monte carlo residual static correction. All kinds of noise are suppressed and the effective information and the characteristics of wave group are protected from damaging. The disturb of multiple wave is eliminated effectively through the methods of deconvolution, minus method and FK domain methods. The slanting interference is suppressed effectively by applying the technology of double dip filter in FK domain. The seismic data quality has been improved efficiently through a series of processing method.The processing results demonstrate that wave group characteristics are obvious, layer information is rich, the fault is clear. The cognition of geology is coincide with the data of gravity, magnet and electricity through interpreters’tracking contrast and comprehensive research of processing results.In this paper, the problem of multiple wave suppression and linear refraction interference wave elimination are solved effectively. The profiles’ signal to noise ratio is improved greatly. And a set of seismic data processing method is studied. The processing scheme which is studied in this paper is suit for low signal to noise region.