IGGCAS OpenIR  > 地球与行星物理院重点实验室
Thin interbed AVA inversion based on a fast algorithm for reflectivity
Yang, Zhen1,2; Lu, Jun3
2020-05-25
Source PublicationACTA GEOPHYSICA
ISSN1895-6572
Pages14
AbstractZoeppritz equations form the theoretical basis of most existing amplitude variation with incident angle (AVA) inversion methods. Assuming that only primary reflections exist, that is, the multiples are fully suppressed and the transmission loss and geometric spreading are completely compensated for, Zoeppritz equations can be used to solve for the elastic parameters of strata effectively. However, for thin interbeds, conventional seismic data processing technologies cannot suppress the internal multiples effectively, nor can they compensate for the transmission loss accurately. Therefore, AVA inversion methods based on Zoeppritz equations or their approximations are not applicable to thin interbeds. In this study, we propose a prestack AVA inversion method based on a fast algorithm for reflectivity. The fast reflectivity method can compute the full-wave responses, including the reflection, transmission, mode conversion, and internal multiples, which is beneficial to the seismic inversion of thin interbeds. A further advantage of the fast reflectivity method is that the partial derivatives of the reflection coefficient with respect to the elastic parameters can be expressed as analytical solutions. Based on the Gauss-Newton method, we construct the objective function and model-updating formula considering sparse constraint, where the Jacobian matrix takes the form of an analytical solution, which can significantly accelerate the inversion convergence. We validate our inversion method using numerical examples and field seismic data. The inversion results demonstrate that the fast reflectivity-based inversion method is more effective for thin interbed models in which the wave-propagation effects, such as interval multiples, are difficult to eliminate.
KeywordAmplitude variation with incident angle Inversion Thin interbed Fast algorithm Reflectivity method
DOI10.1007/s11600-020-00448-7
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordSYNTHETIC SEISMOGRAMS ; SEISMIC DATA ; CASE-HISTORY ; DECOMPOSITION ; COMPUTATION ; PP
Language英语
Funding ProjectNational Natural Science Foundation of China[41574126] ; National Natural Science Foundation of China[U1910205]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000535377800001
PublisherSPRINGER INTERNATIONAL PUBLISHING AG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96690
Collection地球与行星物理院重点实验室
Corresponding AuthorLu, Jun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang, Zhen,Lu, Jun. Thin interbed AVA inversion based on a fast algorithm for reflectivity[J]. ACTA GEOPHYSICA,2020:14.
APA Yang, Zhen,&Lu, Jun.(2020).Thin interbed AVA inversion based on a fast algorithm for reflectivity.ACTA GEOPHYSICA,14.
MLA Yang, Zhen,et al."Thin interbed AVA inversion based on a fast algorithm for reflectivity".ACTA GEOPHYSICA (2020):14.
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