IGGCAS OpenIR  > 油气资源研究院重点实验室
Research on diffraction wave reverse time migration imaging methods
Wang XiaoYi1,2,5; Chen Xi3,4; Yang Zhen3,4; Zhang JiangJie1,2
2022
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume65Issue:1Pages:320-332
AbstractDiffraction 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.
KeywordDiffraction wave Reverse time migration Hilbert transform Dip-angle domain common-image gather
DOI10.6038/cjg2021O0309
WOS KeywordHILBERT TRANSFORM ; ANGLE GATHERS
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000776136800024
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105125
Collection油气资源研究院重点实验室
Corresponding AuthorZhang JiangJie
Affiliation1.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
First Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
Recommended Citation
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.
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