Study On Seismic Data Processing Technology In Western Ordos Basin

Ordos basin west margin region is located in the fold belt,the western margin of the basin cover earth's surface and structure of thick soil lager is complex,and at the same time the structure of the underlying strata in development,is a typical oil and gas exploration in complex areas.The static correction problems due to multiple factors of seismic data,low signal-to-noise ratio,surface consistency and migration imaging,brought major difficult work for data processing.Reason G area west of seismic data as an example,this paper on the basis of theory combined with the actual situation,developed a set of effective seismic data processing techniques for the region,is conducive to speed up the ordos basin west margin area of oil and gas exploration and development process.In this paper,from the static correction,amplitude,frequency,etc,are analyzed in detail the characteristics of seismic data,the region is summarized problems mainly concentrated in static correction,prestack synthetic denoising and migration imaging in three aspects.This paper discusses the elevation statics,refraction static correction and tomographic static correction principle of three kinds of static correction method and implementation process,compared the three methods in the work area of practical application effect;To the problem of the original data of low signal-to-noise ratio of various denoising technology is studied and the deconvolution technique,and effectively and tie-in combination,in order to achieve the optimal effect;Migration imaging,compares three kinds of post-stack migration technique principle and practical application of contrast and optimization,at the same time the Kirchhoff prestack time migration technology research and application,finally got high quality seismic section.