Prestack Reverse-Time Depth Migration on Rugged Topography and Parallel Computation Realization
详细信息
- 责任者：Wang Yanguang (Geophysical Research Institute ; Shengli Oilfield Branch Co. ; SINOPEC ; Dongying 257022 ; China) ; Kuang Bin
- 刊名：Oil Geophysical Prospecting
- 出版年：2012
- 卷期：47(2)
- 关键词：地震勘探 ; seismic exploration ; 叠前深度偏移 ; prestack depth migration
- 页码：p.266-271
- 图表：10 illus., 14 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
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.