Pre-stack time migration based on stationary-phase stacking in the dip-angle domain
文献类型：期刊论文
| 作者 | Xu,Jincheng; Zhang,Hao; Zhang,Jianfeng; Li,Zhengwei; Liu,Wei |
| 刊名 | Journal of Geophysics and Engineering
 |
| 出版日期 | 2017-02-13 |
| 卷号 | 14期号:2 |
| 关键词 | stationary-phase migration pre-stack time migration noise suppression high signal-to-noise ratio |
| ISSN号 | 1742-2132 |
| DOI | 10.1088/1742-2140/aa576f |
| 英文摘要 | Abstract The Kirchhoff-type migration approach often suffers from migration noise, aliasing artifacts due to operator error, or weak noise from a truncated aperture or pre-stacked data. These noises can be attenuated by using stationary-phase migration, which only stacks the reflection energy within the Fresnel zone rather than along the whole migration aperture, and therefore obtains a higher signal-to-noise ratio (SNR) for the migration results. This paper proposes a new implementation for the pre-stack time migration (PSTM) approach, which is based on stationary-phase stacking in the dip-angle domain. This implementation generates a pair of migrated dip-angle gathers in the image domain using PSTM. We can obtain the dip-angle field corresponding to the contribution of the Fresnel zones from the migrated dip-angle gathers, which allows us to remove noise outside the Fresnel zones and significantly improves the SNR of the image gathers. The proposed stationary-phase PSTM could effectively handle the problem of low SNR in migrated images, especially in the presence of steeply dipping structures. We test the method by applying stationary-phase PSTM to an overthrust model example and a three-dimensional field data set, and both examples demonstrate that the resulting images are of good quality with the method. |
| 语种 | 英语 |
| WOS记录号 | IOP:1742-2132-14-2-AA576F |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64191]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 作者单位 | Key Laboratory of Petroleum Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Xu,Jincheng,Zhang,Hao,Zhang,Jianfeng,et al. Pre-stack time migration based on stationary-phase stacking in the dip-angle domain[J]. Journal of Geophysics and Engineering,2017,14(2). |
| APA | Xu,Jincheng,Zhang,Hao,Zhang,Jianfeng,Li,Zhengwei,&Liu,Wei.(2017).Pre-stack time migration based on stationary-phase stacking in the dip-angle domain.Journal of Geophysics and Engineering,14(2). |
| MLA | Xu,Jincheng,et al."Pre-stack time migration based on stationary-phase stacking in the dip-angle domain".Journal of Geophysics and Engineering 14.2(2017). |
入库方式： OAI收割
来源：地质与地球物理研究所
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