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Research on diffraction wave reverse time migration imaging methods

文献类型：期刊论文

作者Wang XiaoYi1,2,5; Chen Xi3,4; Yang Zhen3,4; Zhang JiangJie1,2
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2022
卷号65期号:1页码:320-332
关键词Diffraction wave Reverse time migration Hilbert transform Dip-angle domain common-image gather
ISSN号0001-5733
DOI10.6038/cjg2021O0309
英文摘要Diffraction points in the seismic profile reflect the location information of discontinuities such as underground faults, pinching-outs, and karst caves. Therefore, the diffracted wave is of great significance for the realization of precise imaging of small-scale structures. The diffracted wave imaging schemes based on reverse time migration include the multiplication imaging condition-based method and the picking-up method in the dip-angle domain. The multiplication imaging condition-based method locates diffraction points by multiplying positive- and negative-dip angle structural profiles. And the basis of the picking-up method are characteristics of the diffracted wave in the dip angle domain. Among them, we achieve the wavefield directional decomposition with the help of the Hilbert transform and the extrapolation of the accompanying wavefield, thus realizing the imaging of structures in an inclined direction and improving the quality of the dip gathers. We also derive the imaging conditions for positive- or negative-dip angle structures which don't need directional decomposition. As a full-wave imaging approach, reverse time migration provides an imaging profile including diffraction points, which inspires us to extract the diffraction points' locations from the seismic profile through image processing. Compared with the previous two methods, this method has the characteristics of low cost, robust scalability, and localized profile processing.
WOS关键词HILBERT TRANSFORM ; ANGLE GATHERS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000776136800024
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/105125]  
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Zhang JiangJie
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
4.Guangzhou Marine Geol Survey, Guangzhou 510075, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang XiaoYi,Chen Xi,Yang Zhen,et al. Research on diffraction wave reverse time migration imaging methods[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(1):320-332.
APA Wang XiaoYi,Chen Xi,Yang Zhen,&Zhang JiangJie.(2022).Research on diffraction wave reverse time migration imaging methods.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(1),320-332.
MLA Wang XiaoYi,et al."Research on diffraction wave reverse time migration imaging methods".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.1(2022):320-332.

入库方式： OAI收割

来源：地质与地球物理研究所

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