Adaptive reconstruction method of impedance model with absolute and relative constraints

doi:10.1016/j.jappgeo.2008.10.003

	Adaptive reconstruction method of impedance model with absolute and relative constraints
	Zhang, Hongbing 1; Shang, Zuoping 1; Yang, Changchun 2
刊名	JOURNAL OF APPLIED GEOPHYSICS
	2009-02-01
卷号	67 期号:2 页码:114-124
关键词	Impedance inversion Edge-preserving regularization Regularization parameter Geological structure constraint Anisotropic diffusion method
ISSN号	0926-9851
DOI	10.1016/j.jappgeo.2008.10.003
文献子类	Article
英文摘要	Inversion for seismic impedance is an ill-posed and band-limited problem so that inversion results are non-unique and unstable and low and high frequency components of inversion results are missed. Combining regularization with constraints of sonic log data and geological structure information can help to alleviate these problems. To achieve this, we developed an inversion method by constructing a new objective function which includes edge-preserving regularization and soft constraint based on Markov random field (MRF). The method directly introduces absolute constraints with prior impedance and sonic log data in the objective function and indirectly achieves relative constraints with geologic structures of layer interfaces and faults by adjusting the regularization parameter which is the scaling parameter delta. Moreover, we improved the inversion result using anisotropic diffusion smoothing method. Optimization approach utilized in inversion is a fast simulated annealing (FSA). We test the method on both synthetic and field data examples. Tests on 2-D synthetic data indicate that aspects of the discontinuity in the inversion results are significantly improved by adding delta values in faults and layer interfaces. We obtained better results by combining the first-order neighborhood and the third-order neighborhood of MRF. The inversion results of the field data provide more detailed information of the layers. The results of nearby faults were improved by introducing the geological structure constraints. (C) 2008 Elsevier B. V. All rights reserved.
WOS关键词	PLANE-WAVE SEISMOGRAMS ; SEISMIC DATA ; VELOCITY ESTIMATION ; FORM INVERSION ; REGULARIZATION ; OPTIMIZATION ; TOMOGRAPHY ; OFFSET
WOS研究方向	Geology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000265714900002
资助机构	University of Hohai, China ; University of Hohai, China ; Chinese Academy of Sciences(KZCX1-SW-18) ; Chinese Academy of Sciences(KZCX1-SW-18) ; University of Hohai, China ; University of Hohai, China ; Chinese Academy of Sciences(KZCX1-SW-18) ; Chinese Academy of Sciences(KZCX1-SW-18) ; University of Hohai, China ; University of Hohai, China ; Chinese Academy of Sciences(KZCX1-SW-18) ; Chinese Academy of Sciences(KZCX1-SW-18) ; University of Hohai, China ; University of Hohai, China ; Chinese Academy of Sciences(KZCX1-SW-18) ; Chinese Academy of Sciences(KZCX1-SW-18)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71710]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Hongbing
作者单位	1.Hohai Univ, Dept Earth Sci & Engn, Nanjing 210098, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hongbing,Shang, Zuoping,Yang, Changchun. Adaptive reconstruction method of impedance model with absolute and relative constraints[J]. JOURNAL OF APPLIED GEOPHYSICS,2009,67(2):114-124.
APA	Zhang, Hongbing,Shang, Zuoping,&Yang, Changchun.(2009).Adaptive reconstruction method of impedance model with absolute and relative constraints.JOURNAL OF APPLIED GEOPHYSICS,67(2),114-124.
MLA	Zhang, Hongbing,et al."Adaptive reconstruction method of impedance model with absolute and relative constraints".JOURNAL OF APPLIED GEOPHYSICS 67.2(2009):114-124.