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《Oil Geophysical Prospecting》 2004-01
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Practical methods for 2-D wave equation prestack depth migration.

Fang Wu bao,Sun Jian guo and Chen Jiu bing. Fang Wu bao,Oil Geophysical Research Institute,Nanjing City,Jiangsu Province,210014,China  
Practical methods for 2 D wave equation prestack depth migration are being further developed and completed.The paper only compared four representative methods,that is Split Step Fourier (SSF),Fourier Finite Difference (FFD),Generalized Screen Propagators (GSP) and Finite Difference in Space Frequency Domain (XWFD).All these methods have the following thinking: the velocity field is split into background field and disturbed field,the wavefield continuation of background field is completed by phase shift method and migrated imaging of disturbed field is fulfilled by different methods,so each method has his own characters.The paper tested and analyzed the pulse responses corresponding to four methods and migrated imaging processing was carried out by using Marmousi model and real seismic data separately at the same time,the calculated results are more ideal.The comparison of the results in these wave equation migration methods with those by Kirchhoff method is also carried out.The analyses showed the former is superior to the latter in resolution and imaging capacity for weak signal.
【CateGory Index】: P631.4
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【References】
Chinese Journal Full-text Database 3 Hits
1 CHEN Yong, HE Zhen-hua, HUANG De-li (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, Sichuan, China);Two Dimensional Phase-shift Migration and Phase-shift Factor[J];Journal of Oil and Gas Technology;2008-01
2 ;A Study Of Three Dimensional Phase Shift Migration In Two Steps Method In The Accuracy Different Seismic Record[J];Inner Mongolia Petrochemical Industry;2008-05
3 Chen Yong,Chengdu Science and Technology University;STUDY ON THE PRECISION OF 3D DEVIATION OF TWO-STEP METHOD IN DIFFERENT SEISMIC TRACE RECORDS[J];Computer Applications of Petroleum;2007-04
【Co-references】
Chinese Journal Full-text Database 2 Hits
1 MA ZAI-TIAN;A SPLITTING-UP METHOD FOR SOLUTION OF HIGHER-ORDER MIGRATION EQUATION BY FINITE-DIFFERENCE SCHEME[J];Chinese Journal of Geophysics;1983-04
2 GENG JIAN-HUA;MA ZAI-TIAN;WANG HUA-ZHONG;LEI BING (Department of Marine Geology & Geophysics, Tongji University, shanghai 200092, China);PRESTACK DEPTH MIGRATION BY WAVE EQUATION FINITE DIFFERENCE[J];Chinese Journal of Geophysics;1998-03
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