A seismic diffraction extraction method for the study of discontinuous geologies using a regularisation algorithm
文献类型：期刊论文
| 作者 | Yu, Caixia1; Wang, Yanfei1; Zhao, Jingtao2 |
| 刊名 | EXPLORATION GEOPHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 48期号:1页码:49-55 |
| 关键词 | Diffraction Extraction Local Slope Estimation Plane-wave Equation Regularisation Method |
| ISSN号 | 0812-3985 |
| DOI | 10.1071/EG15006 |
| 文献子类 | Article |
| 英文摘要 | Seismic diffractions play a vital role in identifying discontinuous geological structures, such as tiny faults and cavities which are important because of their close relationship with the reservoir properties of oil and gas. In this paper, we focus on an extraction method for separation of seismic diffractions. The energy of reflection is usually much stronger than that of the diffraction, thus, removing reflection becomes a key problem for diffraction applications. In order to extract seismic diffractions accurately and stably, we propose an optimised regularisation method based on the local plane-wave equation. By considering two constraints arising from the Sobolev penalty function and the difference operator, we build a stable minimisation model for determining seismic slopes. In computation, an iterative method based on projection onto a convex set for solving the nonlinear minimisation is developed, which can provide fast and accurate solutions. Subtracting the predicted reflections from the seismic image, we can extract the seismic diffractions. Numerical experiments illustrate the effectiveness of the diffraction extraction method in separating tiny faults, scatterers and cavities. Finally, a carbonate reservoir field example is provided to demonstrate the high-resolution capability of the method in revealing small-scale discontinuous geological features. |
| WOS关键词 | SECTIONS ; WAVES |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000395557400005 |
| 出版者 | CSIRO PUBLISHING |
| 资助机构 | National Natural Science Foundation of China(41325016 ; SINOPEC ; Chinese Postdoctoral Science Fund(2014M561001 ; 11271349) ; 2014M550829) ; National Natural Science Foundation of China(41325016 ; SINOPEC ; Chinese Postdoctoral Science Fund(2014M561001 ; 11271349) ; 2014M550829) ; National Natural Science Foundation of China(41325016 ; SINOPEC ; Chinese Postdoctoral Science Fund(2014M561001 ; 11271349) ; 2014M550829) ; National Natural Science Foundation of China(41325016 ; SINOPEC ; Chinese Postdoctoral Science Fund(2014M561001 ; 11271349) ; 2014M550829) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53062]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Wang, Yanfei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.China Univ Min & Technol Beijing, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Caixia,Wang, Yanfei,Zhao, Jingtao. A seismic diffraction extraction method for the study of discontinuous geologies using a regularisation algorithm[J]. EXPLORATION GEOPHYSICS,2017,48(1):49-55. |
| APA | Yu, Caixia,Wang, Yanfei,&Zhao, Jingtao.(2017).A seismic diffraction extraction method for the study of discontinuous geologies using a regularisation algorithm.EXPLORATION GEOPHYSICS,48(1),49-55. |
| MLA | Yu, Caixia,et al."A seismic diffraction extraction method for the study of discontinuous geologies using a regularisation algorithm".EXPLORATION GEOPHYSICS 48.1(2017):49-55. |
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。