基于区域分解的3D弹性波全波形反演并行实现策略  

A parallel implementing strategy for full waveform inversion of 3D elastic waves based on domain decomposition

作　　者：秦宁[1] 梁鸿贤[1] 郭振波 李振春[3] QIN Ning;LIANG Hongxian;GUO Zhenbo;LI Zhenchun(Geophysical Research Institute,Shengli Oilfield Branch Co.,SINOPEC,Dongying,Shandong 257022,China;Research&Development Center,BGP Inc,CNPC,Zhuozhou,Hebei 072751,China;School of Geosciences,China University ofPetroleum(East China),Qingdao,Shandong 266580,China)

机构地区：[1]中国石化胜利油田物探研究院,山东东营257022 [2]东方地球物理公司物探技术研究中心,河北涿州072751 [3]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《石油地球物理勘探》2023年第2期351-357,共7页Oil Geophysical Prospecting

基　　金：中石化科技攻关项目“东部老区高密度地震技术深化研究与应用”(P20034-3);胜利油田科技攻关项目“成像域高分辨率保真反演成像技术研究”(YKW2101)联合资助。

摘　　要：全波形反演作为一种能够在理论上提供更高精度成像的反演方法,是当前地震勘探领域的研究热点之一。它所面临的一个主要问题是计算量庞大,特别是对于3D弹性介质的全波形反演。针对这一问题,本文基于区域分解技术发展了一种3D弹性波全波形反演并行实现策略。首先,对全波形反演理论进行简要介绍;然后,详细分析区域分解并行实现中的主要问题并给出相应的解决策略;最后,通过简单的透射模型证明了算法的正确性及有效性。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.

关 键 词：区域分解 弹性波 波形反演 并行实现 计算效率 内存占用 

分 类 号：P631[天文地球—地质矿产勘探]