Wavefield interpolation in 3D large-step Fourier wavefield extrapolation
文献类型：期刊论文
| 作者 | Chen, Gaoxiang1,3; Fu, Li-Yun1,2; Wei, Wei1; Sun, Weijia1 |
| 刊名 | GEOPHYSICAL PROSPECTING
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 66期号:2页码:311-326 |
| ISSN号 | 0016-8025 |
| 关键词 | 3D Fourier depth migration First-order separation-of-variables screen propagator Thick-slab extrapolation Thin-slab interpolation 3D Born-Kirchhoff interpolators |
| DOI | 10.1111/1365-2478.12519 |
| 文献子类 | Article |
| 英文摘要 | Extrapolating wavefields and imaging at each depth during three-dimensional recursive wave-equation migration is a time-consuming endeavor. For efficiency, most commercial techniques extrapolate wavefields through thick slabs followed by wavefield interpolation within each thick slab. In this article, we develop this strategy by associating more efficient interpolators with a Fourier-transform-related wavefield extrapolation method. First, we formulate a three-dimensional first-order separation-of-variables screen propagator for large-step wavefield extrapolation, which allows for wide-angle propagations in highly contrasting media. This propagator significantly improves the performance of the split-step Fourier method in dealing with significant lateral heterogeneities at the cost of only one more fast Fourier transform in each thick slab. We then extend the two-dimensional Kirchhoff and Born-Kirchhoff local wavefield interpolators to three-dimensional cases for each slab. The three-dimensional Kirchhoff interpolator is based on the traditional Kirchhoff formula and applies to moderate lateral velocity variations, whereas the three-dimensional Born-Kirchhoff interpolator is derived from the Lippmann-Schwinger integral equation under the Born approximation and is adapted to highly laterally varying media. Numerical examples on the three-dimensional salt model of the Society of Exploration Geophysicists/European Association of Geoscientists demonstrate that three-dimensional first-order separation-of-variables screen propagator Born-Kirchhoff depth migration using thick-slab wavefield extrapolation plus thin-slab interpolation tolerates a considerable depth-step size of up to 72 ms, eventually resulting in an efficiency improvement of nearly 80% without obvious loss of imaging accuracy. Although the proposed three-dimensional interpolators are presented with one-way Fourier extrapolation methods, they can be extended for applications to general migration methods. |
| WOS关键词 | HETEROGENEOUS MEDIA ; KUQA DEPRESSION ; MIGRATION ; EQUATION ; PROPAGATORS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000425825300004 |
| 资助机构 | National Natural Science Foundation of China(41130418 ; National Natural Science Foundation of China(41130418 ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; 41204098 ; 41204098 ; 41104079) ; 41104079) ; National Natural Science Foundation of China(41130418 ; National Natural Science Foundation of China(41130418 ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; 41204098 ; 41204098 ; 41104079) ; 41104079) ; National Natural Science Foundation of China(41130418 ; National Natural Science Foundation of China(41130418 ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; 41204098 ; 41204098 ; 41104079) ; 41104079) ; National Natural Science Foundation of China(41130418 ; National Natural Science Foundation of China(41130418 ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; National High Technology Research and Development Program (863 Program) of China(2013AA064202) ; 41204098 ; 41204098 ; 41104079) ; 41104079) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/82846]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Fu, Li-Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Guizhou, Peoples R China 3.Zhejiang Prov Inst Commun Planning Design & Res, Hangzhou 310000, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Gaoxiang,Fu, Li-Yun,Wei, Wei,et al. Wavefield interpolation in 3D large-step Fourier wavefield extrapolation[J]. GEOPHYSICAL PROSPECTING,2018,66(2):311-326. |
| APA | Chen, Gaoxiang,Fu, Li-Yun,Wei, Wei,&Sun, Weijia.(2018).Wavefield interpolation in 3D large-step Fourier wavefield extrapolation.GEOPHYSICAL PROSPECTING,66(2),311-326. |
| MLA | Chen, Gaoxiang,et al."Wavefield interpolation in 3D large-step Fourier wavefield extrapolation".GEOPHYSICAL PROSPECTING 66.2(2018):311-326. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。