Common-angle gathers based on Kirchhoff pre-stack time migration
文献类型：期刊论文
| 作者 | Zou Zhen1,2; Liu Hong1; Liu Hong-Wei1,2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 53期号:5页码:1207-1214 |
| 关键词 | Kirchhoff Pstm Common-angle Gathers (Cag) Angle-domain Common Image Gathers (Adcig) |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2010.05.023 |
| 文献子类 | Article |
| 英文摘要 | In this paper we present the improved algorithm for common-angle gathers based on Kirchhoff pre-stack time migration. The algorithm can calculate relatively true incident angle under three-dimensional circumstance, while the traditional ray-parameter method could not handle the incident angle for the dipping events. Compared with the straight-ray Kirchhoff angle domain gathers method proposed in recent years, our method is able to extract much wider angle for taking interval velocity and ray bending effect into account. Moreover, we apply non-hyperbolic moveout equation to calculate the travel time, thus the common-angle gathers are flatter at the large angle than straight ray method. Efficient true-amplitude weighting function as well as hit-count correction is beneficial for AVA inversion. The results of synthetic model data have verified that compared with angle gathers transformed from offset to angle domain with CMP gathers and CRP gathers after migration, the common-angle gathers based on Kirchhoff pre-stack time migration have the following advantages: much more accurate incident angle, the effect of amplitude versus angle (AVA) is robust and clear. The real 3-D data test showed that the angle gathers provided with our method were beneficial for AVA analysis and AVA inversion, and could improve pre-stack inversion resolution. |
| WOS关键词 | IMAGE GATHERS ; AVO |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000278169100023 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72584]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zou Zhen |
| 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, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou Zhen,Liu Hong,Liu Hong-Wei. Common-angle gathers based on Kirchhoff pre-stack time migration[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2010,53(5):1207-1214. |
| APA | Zou Zhen,Liu Hong,&Liu Hong-Wei.(2010).Common-angle gathers based on Kirchhoff pre-stack time migration.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,53(5),1207-1214. |
| MLA | Zou Zhen,et al."Common-angle gathers based on Kirchhoff pre-stack time migration".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 53.5(2010):1207-1214. |
入库方式： OAI收割
来源：地质与地球物理研究所
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