波动方程叠前深度偏移的GPU技术

英文篇名：WAVE EQUATION PRE-STACK DEPTH MIGRATION WITH GPU
中文刊名：物探化探计算技术
英文刊名：Computing Techniques for Geophysical and Geochemical Exploration
作者：刘奇琳 ; 黄跃 ; 唐建明 ; 甘其刚
英文作者：LIU Qi-lin1 ; HUANG Yue2 ; TANG Jian-ming3 ; et al.(1.Post-doctor Research Workstation ; SWPB SINOPEC ; Chengdu 610081 ; China ; 2.Southwest Petroleum Branch ; SINOPEC ; Chengdu 610000 ; China ; 3.Deyang Branch Institute E&P Research Institute ; SWPB SINOPEC ; Deyang 618000 ; China).
中文关键词：波动方程叠前深度偏移 ; 高性能计算 ; GPU ; CUDA
英文关键词：wave equation pre-stack migration ; high performance computing ; GPU ; CUDA
出版日期：2010-07-15
机构：中国石油化工股份有限公司西南油气分公司博士后科研工作站;中国石油化工股份有限公司西南油气分公司;中国石油化工股份有限公司西南油气分公司勘探开发研究院德阳分院;
年：2010
期：04
出版单位：物探化探计算技术

摘要

偏移成像是地震资料处理流程中重要的一环,目前工业界所采用的方法是克希霍夫时间偏移,该方法的优点在于计算效率高,模型易于获取。但因其基于高频近似,难以适应多次到达,欠照明影响及横向变速剧烈的地质情况。波动方程叠前深度偏移则能较好地解决这些问题,但其计算成本远高于克希霍夫偏移方法,这也成为其在实际生产应用中的瓶颈之一。这里将利用GPU技术,研究波动方程叠前深度偏移的高性能计算方法,使之能够满足生产中海量数据处理的需要。
Migration is an important part of the procedure of the seismic data processing.Nowadays,kirchhoff time migration is wildly used by the petroleum industry.The advantage of this method is the efficient computation and easy to obtain the model.However,it based on the high frequency approximation,which is hard to deal with the problem of multi-arrival,poor illumination and strongly lateral velocity variance.Wave equation pre-stack depth migration will fix this problem better but with much more computation consuming than kirchhoff method that becomes one of the bottle-neck of the industrial practice.In this paper we will study the high performance computing method of wave equation pre-stack depth migration by the GPU technology.And make sure it will satisfy the massive data processing for real practice.

引文

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