Migration of seismic multiple reflections
文献类型：期刊论文
| 作者 | Liu YiKe; Liu XueJian; Zhang YanBao |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 61期号:3页码:1025-1037 |
| 关键词 | Surface-related multiples Internal multiples Controlled-order LSRTM |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2018L0368 |
| 文献子类 | Article |
| 英文摘要 | Seismic data contains various kinds of multiple reflections, including surface-related and internal multiples. Conventional seismic imaging utilizes reflections only and the multiples, being traditionally treated as noise, are removed before imaging. Actually, multiples penetrate into the subsurface several times and contain abundant reflection information. Multiples sometimes can provide higher fold and better illumination for the subsurface than primaries. Multiples usually travel with longer wave paths and cover larger areas than primaries in the media, and multiples can penetrate into the earth to illuminate the shadow zones which primaries cannot reach. Consequently, migration of multiples can sometimes provide better subsalt images compared to conventional migration which uses primary reflections only. We modify conventional reverse time migration (RTM) so that surface-related multiples can be used as constructive reflection energy for subsalt imaging. This approach replaces the impulsive source wavelet with the recorded data containing both primaries and multiples and uses predicted multiples as the input data instead of primary reflections. In the reverse time migration process, multiples recorded on the surface are extrapolated backward in time to each depth level, and the observed data with both primaries and multiples are extrapolated forward in time to the same depth levels, followed by a cross-correlation imaging condition. |
| WOS关键词 | REVERSE-TIME MIGRATION ; SURFACE-RELATED MULTIPLES ; ITERATIVE INVERSION ; PART II ; SCATTERING ; OUTLOOK ; FUTURE ; PAPER ; REMOVAL |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000428609900019 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/83186]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu YiKe |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu YiKe,Liu XueJian,Zhang YanBao. Migration of seismic multiple reflections[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(3):1025-1037. |
| APA | Liu YiKe,Liu XueJian,&Zhang YanBao.(2018).Migration of seismic multiple reflections.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(3),1025-1037. |
| MLA | Liu YiKe,et al."Migration of seismic multiple reflections".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.3(2018):1025-1037. |
入库方式： OAI收割
来源：地质与地球物理研究所
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