起伏地表叠前逆时深度偏移与并行实现  

Prestack reverse-time depth migration on rugged topography and parallel computation realization

作　　者：王延光[1] 匡斌[1] 

机构地区：[1]胜利油田分公司物探研究院,山东东营257022

出　　处：《石油地球物理勘探》2012年第2期266-271,183,共6页Oil Geophysical Prospecting

摘　　要：本文系统讨论了逆时偏移中常用的波动方程求解方法,并简述了其各自的特点和优势。文中提出用逆时偏移实现基于起伏地表的波动方程叠前深度偏移,理论模型数据的试算结果与单程波方程和Kirchhoff积分方法结果进行对比,展示了逆时偏移的优越性。自行研发的基于CPU/GPU平台的并行软件,推动了逆时偏移算法实用化的运行,在应用中取得了良好效果。After reviewing the most commonly used methods for solving the wave equations in reverse-time migration,and their respective features and advantages,we propose in this paper a reverse-time migration method for directly imaging subsurface structures based on rugged topography directly instead of applying elevation correction before migration.A few numerical examples example results comparing with those by one way wave equation and Kirchhoff method demonstrates the superiority of reverse-time migration.Finally the independent our recently developed parallel software based on GPU/CPU collaborative computing has implemented the practical application of RTM,and approving results have been achieved.

关 键 词：逆时偏移 起伏地表 图形处理器(GPU) 

分 类 号：P631[天文地球—地质矿产勘探]