Phase-encoding-based least-squares reverse time migration of controlled-order multiples
文献类型：期刊论文
| 作者 | Zhang, Yanbao; Liu, Yike |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 88期号:3页码:S101-S113 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2022-0278.1 |
| 英文摘要 | Reverse time migration of controlled-order multiples (RTM-CM) can significantly remove strong crosstalk arti-facts in multiples imaging. However, the computational cost is demanding if all pairs of consecutive-order multiples are considered, and an RTM-CM image retains residual cross-talk. To address these issues, we have developed a phase -en-coding-based migration approach. This approach first phase -encodes different-order multiples by randomly modifying time shifts and polarity reversals, and then blends the encoded data into supergathers. As a result of using super -gathers, migrations of different-order multiples are simulta-neously accomplished, which considerably improves computational efficiency. As the simultaneous migration in-herits the advantages of RTM-CM and provides good gra-dients for least-squares migration (LSM), we introduced an iterative LSM to gradually attenuate residual crosstalks in our approach. Numerical experiments on synthetic and field data sets revealed that our approach can significantly en-hance imaging quality by suppressing crosstalks, increasing spatial resolutions, and reducing computational costs. |
| WOS关键词 | FREE-SURFACE MULTIPLES ; SHOT RECORDS |
| 资助项目 | National Nature Science Foundation of China[42130807] ; National Nature Science Foundation of China[42104114] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS - SEG |
| WOS记录号 | WOS:001015175400002 |
| 资助机构 | National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111308]  |
| 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, Yanbao |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yanbao,Liu, Yike. Phase-encoding-based least-squares reverse time migration of controlled-order multiples[J]. GEOPHYSICS,2023,88(3):S101-S113. |
| APA | Zhang, Yanbao,&Liu, Yike.(2023).Phase-encoding-based least-squares reverse time migration of controlled-order multiples.GEOPHYSICS,88(3),S101-S113. |
| MLA | Zhang, Yanbao,et al."Phase-encoding-based least-squares reverse time migration of controlled-order multiples".GEOPHYSICS 88.3(2023):S101-S113. |
入库方式： OAI收割
来源：地质与地球物理研究所
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