Full-wavefield migration method by amplitude-preserving inverse scattering imaging condition

被引：0

作者：

Xu J. ^{[1
]}

Yang J. ^{[1
]}

Wang Y. ^{[2
]}

Huang J. ^{[1
]}

Guo W. ^{[2
]}

Yang Y. ^{[3
]}

机构：

[1] School of Geosciences, China University of Petroleum（East China）, Shandong, Qingdao

[2] Shandong Energy Group South America Co. ，Ltd, Shandong, Qingdao

[3] Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying, Shandong

来源：

Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | 2024年 / 59卷 / 01期

关键词：

amplitude‑preserving inverse scattering; full‑wavefield migration; imaging condition; multiple scat‑ tering wave;

D O I：

10.13810/j.cnki.issn.1000-7210.2024.01.011

中图分类号：

学科分类号：

摘要：

As seismic wave simulation and imaging methods have made great progress，multiple scattering waves are no longer suppressed as the noise but are used for high‑precision seismic imaging. Unlike the conven‑ tional imaging method that is based on single scattering，the full ‑ wavefield migration is a new data‑driven method for imaging all scattering waves based on the multiple scattering assumption and inversion theory. Based on inverse scattering imaging theory，this paper improves the existing full‑ wavefield migration scheme and develops an amplitude‑preserving inverse scattering imaging condition for high‑precision seismic imaging. Laplacian filter and source illumination term are added the cross‑correlation imaging condition of the existing di‑ rect wave estimation and downward Green’s function to attenuate backscattering and compensate for deep energy. The improved amplitude‑preserving inverse scattering imaging condition produces higher imaging accu‑ racy and stronger adaptability for complex structures than the traditional imaging condition. Numerical tests demonstrate the effectiveness and applicability of the proposed method. © 2024 Editorial office of Oil Geophysical Prospecting. All rights reserved.

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页码：98 / 109

页数：11

共 40 条

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