中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Thin interbed AVA inversion based on a fast algorithm for reflectivity

文献类型:期刊论文

作者Yang, Zhen2,3; Lu, Jun1
刊名ACTA GEOPHYSICA
出版日期2020-05-25
页码14
关键词Amplitude variation with incident angle Inversion Thin interbed Fast algorithm Reflectivity method
ISSN号1895-6572
DOI10.1007/s11600-020-00448-7
英文摘要Zoeppritz 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.
WOS关键词SYNTHETIC SEISMOGRAMS ; SEISMIC DATA ; CASE-HISTORY ; DECOMPOSITION ; COMPUTATION ; PP
资助项目National Natural Science Foundation of China[41574126] ; National Natural Science Foundation of China[U1910205]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000535377800001
出版者SPRINGER INTERNATIONAL PUBLISHING AG
资助机构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 ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/96690]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Lu, Jun
作者单位1.China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
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.

入库方式: OAI收割

来源:地质与地球物理研究所

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