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《Chinese Journal of Geophysics》 2007-01
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DSR one-way wave equation prestack τ migration

CHENG Jiu-Bing,MA Zai-Tian,GENG Jian-Hua,WANG Hua-ZhongSchool of Ocean and Earth Science,State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China  
By transforming the classical double-square-root(DSR) one-way wave equation from the depth domain to the two-way vertical traveltime(τ) domain,we derive an one-way DSR wave propagator which can be applied to mathematically implement "sinking survey".Its algorithm to recursively continue the source and receiver wavefields,which includes a wavenumber domain phase shift in a constant background medium followed by a phase correction in the space domain that accommodates lateral velocity variations,can tackle the effects of lateral velocity variations for imaging under complex overburdens.Combing with the zero-offset and zero-time imaging condition,we develop a DSR equation prestack migration method that implements wavefield continuation and imaging in the τ space.To address the problems that full volume 3-D DSR equation migration could meet with in production application,we present a feasible common-azimuth prestack τ migration approach based on the theory of crossline common-offset migration.Numerical tests show that DSR equation prestack τ migration provides a significant improvement over the traditional prestack time migration technology in laterally varying media.
【Fund】: “863”计划项目(2001AA602018-03);; 国家自然科学基金项目(40504016);; 同济大学理科科技发展基金(TJLK0411)资助
【CateGory Index】: P631.4
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【References】
Chinese Journal Full-text Database 1 Hits
1 Chen Xifeng.Wang Yong,Cheng Jiubing,Wang Shikun,Yang Pengcheng Geophysical Prospecting Technology Research Institute, Jiangsu Oilfield Subsidiary Company,SINOPEC,Nanjing 210046,China;Application of wave equation prestack τ migration on Yongan 3D seismic data of Northern Jiangsu Basin.[J];Geophysical Prospecting for Petroleum;2010-03
【Citations】
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1 CHENG JIUBING WANG HUAZHONG MA ZAITIAN School of Ocean and Earth Science, Tongji University; The Key Laboratory of Marine Geology, MOE, Shanghai 200092, China;DOUBLE SQUARE ROOT EQUATION 3D PRESTACK DEPTH MIGRATION[J];Chinese Journal of Geophysics;2003-05
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 CHEN Hui1,SUN Lei-ming2,LI Lu-ming1,LUO Sheng-xian1,ZHAO An-jun3 1.Key Laboratory of Geomathematics of Sichuan Province,Chengdu University of Technology,Chengdu 610059,China;2.CNOOC Energy Technology &Services Development Prospecting Geophysical,Zhanjiang 524057,China;3.Department of Huabei Oilfield Company Exploration,CNPC,Renqiu 062550,China;Research on the multi-level parallel migration algorithm based on MPI and OpenMP[J];Journal of Chengdu University of Technology(Science & Technology Edition);2010-05
2 CHEN Zhan-wen,CHEN Xiao-hong (School of Resources and Information,China University of Petroleum,Beijing 102249,China);Realizing 3D process for 2D prestack data by using common-azimuth wave equation DSR operator[J];Progress In Geophysics;2005-04
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10 Cheng Jiu-bing, Wang Hua-zhong, Geng Jian-hua and Ma Zai-tian.College of Marine and Earth Science, Tongji University, No.1239, Siping Road, Shanghai City, 200092, China;3-D wave equation common azimuth prestack migration[J];Oil Geophysical Prospecting;2006-06
【Co-references】
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1 WANG Cheng xiang 1,2 ,ZHAO Bo 1 ,ZHANG Guan quan 2 ,LI Shun an 3(1.CNPC Exploration Software Corporation,Ltd. Zhuozhou 072750,China;2.The Scientific Research Institute of Mathematics and System, Chinese Academy of Sciences, Beijing 100080,China;3. Xian University of Electronic Science and Technology,Xian 710010);The CFP technology in seismic processing of complex media[J];Progress In Geophysics;2003-01
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【Secondary Citations】
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