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  4. 中国科学院油气资源研究重点实验室
Deghosting-based reverse time migration with free-surface multiples

文献类型：期刊论文

作者Liu, Xuejian1,2; Liu, Yike1
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2019-02-01
卷号216期号:2页码:1191-1200
关键词Image processing Controlled source seismology Seismic noise Wave propagation
ISSN号0956-540X
DOI10.1093/gji/ggy486
英文摘要As 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.
WOS关键词REFLECTIONS
资助项目National 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]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000462577500030
出版者OXFORD UNIV PRESS
资助机构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 ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/91075]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Liu, Xuejian
作者单位1.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
推荐引用方式
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.

入库方式： OAI收割

来源：地质与地球物理研究所

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