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《Progress in Geophysics》 2008-03
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Application of Kirchhoff PSTM to seismic data of complex structure

MA San-huai,YANG Chang-chun,SUN Fu-li,Huang Wei-chuan(Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China)  
The area studied is located in the central segment of the eastern subbasin of the Liaohe oilfield.Athough the seismic profile processed before reflects the whole configuration,its imaging effect is not very perfectable.So we develop prestack time migration.We introduce the theory of Kirchhoff PSTM and pre-process steps for PSTM,discussing the primary testing and choice methods of PSTM parameters.We use the Deregowski iterative method and the different percent velocity scanning of PSTM to create and improve the velocity model.The result demonstrates that the method of Kirchhoff PSTM has improved the seismic profile greatly.
【Key Words】: Kirchhoff prestack time migration bending ray migration velocity migration aperture deconvolution
【Fund】: 国家重点基础研究发展计划(2005CB422104)资助
【CateGory Index】: P631.4
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