Multi-source elastic full waveform inversion based on P-wave and S-wave separation

被引：0
|
作者：
Huang S. [1 ]
Ren Z. [1 ]
Li Z. [1 ]
Gu B. [1 ]
Li H. [2 ]
机构：
[1] School of Geosciences, China University of Petroleum(East China), Qingdao, 266580, Shandong
[2] Geophysical Research Institute, Shengli Oilfield Branch Co., SINOPEC, Dongying, 257022, Shandong
来源：
Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | 2019年 / 54卷 / 05期
关键词：
Converted wave; Elastic wave full waveform inversion (EFWI); Multi-source; P-wave and S-wave separation;
D O I：
10.13810/j.cnki.issn.1000-7210.2019.05.016
中图分类号：
学科分类号：
摘要：
The elastic wave full waveform inversion (EFWI) can obtain high-accuracy P-wave and S-wave velocity, and density, but the computational cost is rather high.The P-wave and S-wave coupling causes crosstalk noise and decrease inversion accuracy.Multi-source coding can greatly improve EFWI calculation efficiency, but increasing the wavefield complexity, leading to more serious nonlinear problems.In this paper, a multi-source elastic wave full waveform inversion method based on P-wave and S-wave separation is proposed.The method uses dynamic random coding to suppress multi-source crosstalk noise, and uses wavefield separation to mitigate crosstalk effects caused by the P-wave and S-wave coupling.The proposed method is tested on the Marmousi model with consistent P-wave and S-wave velocity structures and on the Marmousi-II model with uncorrelated P-wave and S-wave velocity structures.The results show that the inversion method can effectively suppress crosstalk noise and improve computational efficiency. © 2019, Editorial Department OIL GEOPHYSICAL PROSPECTING. All right reserved.
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页码：1084 / 1093and1105
相关论文
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