IGGCAS OpenIR  > 油气资源研究院重点实验室
Deghosting-based reverse time migration with free-surface multiples
Liu, Xuejian1,2; Liu, Yike1
2019-02-01
Source PublicationGEOPHYSICAL JOURNAL INTERNATIONAL
ISSN0956-540X
Volume216Issue:2Pages:1191-1200
AbstractAs seismic data are acquired below the free-surface, downgoing ghosts are the real sources of recorded upgoing free-surface multiples. Thanks to the modern acquisition with dual-sensor or over/under streamers, we can first decompose the acquired data into the downgoing and upgoing components using a deghosting method at the receiver side. We further develop an integral-compensation method for the decomposed data to reduce the source ghosts, based on the approximation that seismic data with source ghosts are excited by the time-derivative of the source wavelet. Finally, we incorporate the integral-compensated downgoing and upging data in both the reverse time migration (RTM) and the least-squares reverse time migration (LSRTM) procedures for joint imaging of primaries and multiples. Numerical experiments with two synthetic datasets validate that the proposed RTM method presents correct imaging phases corresponding to the reflectivity distributions, the LSRTM method further suppresses most cross-talk artefacts, balances the imaging amplitudes and enhances the imaging resolution, and the imaging process jointly using primaries and free-surface multiples provides wider subsurface coverage than that with primaries only.
KeywordImage processing Controlled source seismology Seismic noise Wave propagation
DOI10.1093/gji/ggy486
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordREFLECTIONS
Language英语
Funding ProjectNational Natural Science Foundation of China[41704142] ; National Natural Science Foundation of China[41430321] ; National Natural Science Foundation of China[41374138] ; National Natural Science Foundation of China[41730425]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000462577500030
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/91075
Collection油气资源研究院重点实验室
Corresponding AuthorLiu, Xuejian
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
2.Los Alamos Natl Lab, Geophys Grp, Los Alamos, NM 87545 USA
Recommended Citation
GB/T 7714
Liu, Xuejian,Liu, Yike. Deghosting-based reverse time migration with free-surface multiples[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2019,216(2):1191-1200.
APA Liu, Xuejian,&Liu, Yike.(2019).Deghosting-based reverse time migration with free-surface multiples.GEOPHYSICAL JOURNAL INTERNATIONAL,216(2),1191-1200.
MLA Liu, Xuejian,et al."Deghosting-based reverse time migration with free-surface multiples".GEOPHYSICAL JOURNAL INTERNATIONAL 216.2(2019):1191-1200.
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