A parallel implementing strategy for full waveform inversion of 3D elastic waves based on domain decomposition
QIN Ning1, LIANG Hongxian1, GUO Zhenbo2, LI Zhenchun3
1. Geophysical Research Institute, Shengli Oilfield Branch Co., SINOPEC, Dongying, Shandong 257022, China; 2. Research & Development Center, BGP Inc, CNPC, Zhuozhou, Hebei 072751, China; 3. School of Geosciences, China University ofPetroleum (East China), Qingdao, Shandong 266580, China
Abstract:As an inversion method,full waveform inversion can theoretically provide higher imaging accuracy, full waveform inversion has become a hot topic in the field of seismic exploration. However, one of the major problems it faces is the huge amount of computational load, especially for full waveform inversion of 3D elastic media. In view of this problem, a parallel implementing strategy for full waveform inversion of 3D elastic waves based on the domain decomposition technique is developed in this paper. Firstly, the theory of full waveform inversion is briefly introduced, and then the main problems in the parallel implementation of domain decomposition are analyzed in detail, followed by corresponding solutions. Finally, the correctness and effectiveness of the algorithm are illustrated by a simple transmission model.
秦宁, 梁鸿贤, 郭振波, 李振春. 基于区域分解的3D弹性波全波形反演 并行实现策略[J]. 石油地球物理勘探, 2023, 58(2): 351-357.
QIN Ning, LIANG Hongxian, GUO Zhenbo, LI Zhenchun. A parallel implementing strategy for full waveform inversion of 3D elastic waves based on domain decomposition. Oil Geophysical Prospecting, 2023, 58(2): 351-357.
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