The influence factors analyses of imaging precision in pre-stack reverse time migration
文献类型：期刊论文
| 作者 | Yang Ren-Hu1,2; Chang Xu1; Liu Yi-Ke1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 53期号:8页码:1902-1913 |
| 关键词 | Pre-stack reverse time migration Influence factors Artifacts Amplitude compensation filtering |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2010.08.016 |
| 文献子类 | Article |
| 英文摘要 | Seismic migration is one of the most effective means to acquire subsurface structures in reflection seismic exploration. Among the migration methods in pre-stack depth domain at present, wave equation integral solutions based on ray theory and wave equation differential solutions based on one-way wave theory are widely applied in industry, which, however, both are difficult to deal with the seismic wave structure imaging problems of large lateral velocity variation and high-steep dip. In recent years, pre-stack reverse time migration developed in seismic exploration adopts the algorithm of using two-way wave method to find the differential wave motion equation solutions, which has some merits such as accurate phase, avoiding lateral variable speed and high-steep dip limitations, high imaging precision, and imaging overturned waves correctly. It makes up the imaging deficiency of the conventional seismic migration methods in industry at present. However, the imaging methods of pre-stack reverse time migration need to overcome some problems for realizing it on 3-D field data, such as raising the computational efficiency, saving data storage space, building the initial velocity model, selection of source wavelet, defining the numerical model boundary condition, and removal of artifacts et al. The problems of computational efficiency and large amount of storage will be overcome with the fast development of computer hardware and adopting some computational technologies and storage strategies. In this paper, we use a simple model to analyze the influences of the initial velocity model building, the source wavelet selection, the numerical model boundary condition definition and the artifacts removal. Especially, we propose the method of amplitude compensation filtering to remove the artifacts in propagation path caused by reflected waves. We implement the pre-stack reverse time migration imaging and achieve better imaging effects for the SEG/EAGE 2-D salt model and Marmousi model, and a rugged water-bottom model designed by us in this paper. |
| WOS关键词 | MEDIA |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000281331800016 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72496]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang Ren-Hu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Bur Geophys Prospecting, Zhuozhou Hebei 072751, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Ren-Hu,Chang Xu,Liu Yi-Ke. The influence factors analyses of imaging precision in pre-stack reverse time migration[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2010,53(8):1902-1913. |
| APA | Yang Ren-Hu,Chang Xu,&Liu Yi-Ke.(2010).The influence factors analyses of imaging precision in pre-stack reverse time migration.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,53(8),1902-1913. |
| MLA | Yang Ren-Hu,et al."The influence factors analyses of imaging precision in pre-stack reverse time migration".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 53.8(2010):1902-1913. |
入库方式： OAI收割
来源：地质与地球物理研究所
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