Prestack Depth Migration by DSR in Non-zero Offset Domain

doi:10.3863/j.issn.1000-2634.2008.01.012

西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (1): 43-46.DOI: 10.3863/j.issn.1000-2634.2008.01.012

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Prestack Depth Migration by DSR in Non-zero Offset Domain

LIU Wen-ge ¹ HE Zhen-hua ^1，2 HUANG De-ji ¹ DU Zeng-li³

1.College of Information Engineering,Chengdu University of Technology，Chengdu Sichuan 610059，China；2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation·Chengdu University of Technology，Chengdu Sichuan 610059，China；3.Chengdu University of Technology，Chengdu Sichuan 610059，China

Received:2007-06-28 Revised:1900-01-01 Online:2008-02-20 Published:2008-02-20
Contact: LIU Wen-ge

Abstract

Abstract: Double-square-root propagator is proposed for pre-stack depth migration in non-zero offset domain,using precise synthetic shot gather,the correct migration sections with arbitrary velocity variations in all directions are obtained by this continuation operators.Based on migration result, seismic characteristic of dynamics can be studied.Comparison with other operators，numerical examples show that pre-stack depth migration with Doublesquare-root propagator is correct and effective，and easy to implement with a high computation efficiency and able to overcome numerical diffusion of the frequency efficiently.Application of this method is also important for lithologic reservoirs exploration.

Key words: wave equation, pre-stack depth migration, numerical simulation, seismic forward modeling, double-square-root operator

CLC Number:

TE132
P315.3

LIU Wen-ge HE Zhen-hua;HUANG De-ji DU Zeng-li. Prestack Depth Migration by DSR in Non-zero Offset Domain[J]. 西南石油大学学报(自然科学版), 2008, 30(1): 43-46.

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http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2008/V30/I1/43

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Prestack Depth Migration by DSR in Non-zero Offset Domain

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