Research On High Resolution Processing Technology Of 3D Seismic Data In Leijia Area Of Western Depression Of Liaohe Basin

This paper studies the actual exploration demand from the western depression of the Liaohe Basin,taking the three-dimensional seismic data collected from the Leijia area in the western slope of the western sag of the Liaohe Basin and the other three surrounding data as the research object,for the noise development in the study area,the random noise of the vibroseis data is extremely developed,the data attributes are different,the main frequency is low,the effective frequency band is narrow,and the target layer is faulty,the main research is to improve the signal-to-noise ratio of pre-stack data,consistency processing and improved resolution processing.Adaptive surface wave attenuation,three-dimensional prestack random noise attenuation,matched filtering,spatial residual amplitude compensation,well control Q compensation,spectral simulation deconvolution,empirical mode decomposition high resolution processing,two-step deconvolution are used in the study.A series of technologies such as product and blue filtering improve the signal-to-noise ratio and resolution of Leijia area.The research results are applied to the 3D seismic data processing in the Leijia area of the western slope of the western depression.The seismic data of the new processing results are more clear,the data signal-to-noise ratio and resolution are improved,and the interlayer information of the target area of the main target area is improved.It is more abundant,and the contact relationship between the strata is more clear.The portrayal of the carbonate facies in the fourth member of the Shahejie Formation is more elaborate.