Full Waveform Inversion of Viscoelastic Media Based on P-S Separation

被引：2

作者：

Xu, Yipeng ^{[1
,2
]}

Zhang, Kai ^{[1
,2
]}

He, Zilin ^{[1
,2
]}

Li, Zhenchun ^{[1
,2
]}

Gao, Jinfeng ^{[1
,2
]}

机构：

[1] China Univ Petr East China, Sch Geosci, Qingdao 266580, Shandong, Peoples R China

[2] China Univ Petr East China, Key Lab Deep Oil & Gas Shandong Prov, Qingdao 266580, Shandong, Peoples R China

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2022年 / 19卷

关键词：

Mathematical models; Media; Geoscience and remote sensing; Crosstalk; Stress; Oils; Geology; Full-waveform inversion (FWI); P-S separation; standard linear solid (SLS) model; viscoelastic medium; PROPAGATION;

D O I：

10.1109/LGRS.2022.3205965

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In viscoelastic full-waveform inversion (FWI), there is interference between the gradients of the P- and S-wave velocities, leading to the degradation of the inversion accuracy. Therefore, the interference problem in viscoelastic media needs to be solved beforehand. Even though the P-S separation method has been demonstrated to be effective in reducing the crosstalk in elastic media, little attention has been paid to its efficacy in viscoelastic media. We incorporate the P-S separation method in the FWI of viscoelastic media (QEFWI) and derive a gradient formula for the QEFWI. Numerical tests on the QEFWI demonstrate that the proposed method can successfully reduce the interference problem between the gradients of P- and S-wave velocities, resulting in significant improvement of the viscoelastic FWI.

引用

页数：5

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