Research On Three-dimensional Merge Processing In YYTX Area Of Songliao Basin

According to the increasing development degree of oil and gas exploration,the seismic exploration mode has gradually changed into a form of large area exploration in the region.Due to the current 3D seismic exploration target area basically has covered the main oil producing areas,in order to avoid duplication of costs a lot of input,and can further meet the geological demands of oilfield development and realize the unity of understanding of the law of regional geology,3D seismic data of processing is very important.The technology of 3D seismic data processing is a continuous processing technology which has been widely used in various major oil fields.This technology has made great progress in recent years.Especially the progress of technical methods.The characteristics of the section have been greatly improved.The signal-to-noise ratio and resolution have been greatly improved and a series of mature technologies for continuous processing have been formed.It includes statics processing technology,spatial geometric attribute consistency,prestack wavelet conformance processing and enhancement of resolution processing,time difference correction and so on.Fine target processing for the target layer,It effectively improves the portrayal of the geological target body by the data body.Four pieces of data collected from the YYTX region of the Changling depression in 2002,2003,2004 and 2005 have been processed respectively.However,because of the different age of four pieces of data collection,the different instruments used and the different acquisition parameters,Therefore,the quality of the data processed is different.In the interpretation of the data,the structure is not easy to implement,the interpretation precision is greatly reduced,and the accurate interpretation results can not be provided.It affects the accuracy of seismic data interpretation.At the same time,it also restricts the overall evaluation of the depression strata in the whole YYT area.The joint processing technology of 3D seismic data in the study area,the combination of static correction technology,prestack fidelity denoising,amplitude consistency adjustment of static correction application of micro logging statics and refraction tomography,step by step surface consistency deconvolution,prestack time migration technology,wavelet shaping,complete processing in this area,provide favorable conditions for regional structure and accurate implementation of sand reservoir identification and detection.