Sparse diffraction imaging method using an adaptive reweighting homotopy algorithm

doi:10.1088/1742-2132/14/1/26

CORC > 地质与地球物理研究所 > 中国科学院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

	Sparse diffraction imaging method using an adaptive reweighting homotopy algorithm
	Yu, Caixia 1; Zhao, Jingtao 2; Wang, Yanfei 1; Qiu, Zhen 3
刊名	JOURNAL OF GEOPHYSICS AND ENGINEERING
	2017-02-01
卷号	14 期号:1 页码:26-40
关键词	diffraction imaging sparsity-constraint model homotopy algorithm
DOI	10.1088/1742-2132/14/1/26
文献子类	Article
英文摘要	Seismic diffractions carry valuable information from subsurface small-scale geologic discontinuities, such as faults, cavities and other features associated with hydrocarbon reservoirs. However, seismic imaging methods mainly use reflection theory for constructing imaging models, which means a smooth constraint on imaging conditions. In fact, diffractors occupy a small account of distributions in an imaging model and possess discontinuous characteristics. In mathematics, this kind of phenomena can be described by the sparse optimization theory. Therefore, we propose a diffraction imaging method based on a sparsityconstraint model for studying diffractors. A reweighted L-2-norm and L-1-norm minimization model is investigated, where the L-2 term requests a least-square error between modeled diffractions and observed diffractions and the L-1 term imposes sparsity on the solution. In order to efficiently solve this model, we use an adaptive reweighting homotopy algorithm that updates the solutions by tracking a path along inexpensive homotopy steps. Numerical examples and field data application demonstrate the feasibility of the proposed method and show its significance for detecting small-scale discontinuities in a seismic section. The proposed method has an advantage in improving the focusing ability of diffractions and reducing the migration artifacts.
WOS关键词	ANGLE GATHERS ; SEPARATION ; SECTIONS
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000390362800003
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10020101) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10020101) ; National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; Chinese postdoctoral science fund(2014M561001 ; Chinese postdoctoral science fund(2014M561001 ; 41604125 ; 41604125 ; 2014M550829) ; 2014M550829) ; 11271349) ; 11271349) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10020101) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10020101) ; National Natural Science Foundation of China(41325016 ; National Natural Science Foundation of China(41325016 ; Chinese postdoctoral science fund(2014M561001 ; Chinese postdoctoral science fund(2014M561001 ; 41604125 ; 41604125 ; 2014M550829) ; 2014M550829) ; 11271349) ; 11271349)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53166]
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
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 3.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Yu, Caixia,Zhao, Jingtao,Wang, Yanfei,et al. Sparse diffraction imaging method using an adaptive reweighting homotopy algorithm[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2017,14(1):26-40.
APA	Yu, Caixia,Zhao, Jingtao,Wang, Yanfei,&Qiu, Zhen.(2017).Sparse diffraction imaging method using an adaptive reweighting homotopy algorithm.JOURNAL OF GEOPHYSICS AND ENGINEERING,14(1),26-40.
MLA	Yu, Caixia,et al."Sparse diffraction imaging method using an adaptive reweighting homotopy algorithm".JOURNAL OF GEOPHYSICS AND ENGINEERING 14.1(2017):26-40.