| 叠前深度偏移中的旅行时并行计算技术 |
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| 引用本文： | 林明玉,匡斌. 叠前深度偏移中的旅行时并行计算技术[J]. 断块油气田, 2003, 10(4): 12-14 |
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| 作者姓名： | 林明玉 匡斌 |
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| 作者单位： | 胜利油田有限公司物探研究院 |
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| 摘 要： | 旅行时计算技术是基于波动方程叠前深度偏移方法的核心内容，射线跟踪的数值计算精度和效率直接影响着介质成像质量和实用化。基于三维射线跟踪的微变网络方法和波前重建思路，提出一种适用于三维复杂介质地震波走时的快速算法。但它所需计算量巨大。采用并行计算技术，设计出基于“任务缓冲池”的动态负载平衡策略，在现有的分布式计算机上，实现了三维射线追踪和叠前深度偏移的并行计算。
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| 关 键 词： | 叠前深度偏移 旅行时并行计算技术 三维射线跟踪 动态负载平衡 偏移孔径 地震勘探 |
| 修稿时间： | 2003-03-01 |
The Study and Application of Traveling Time Parallel Calculating Technology in 3D Prestack Depth Migration |
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| Lin Mingyu. The Study and Application of Traveling Time Parallel Calculating Technology in 3D Prestack Depth Migration[J]. Fault-Block Oil & Gas Field, 2003, 10(4): 12-14 |
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| Authors: | Lin Mingyu |
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| Abstract: | The traveling time calculating technology is the core of the wave equation pre stack depth migration.The calculating precision and efficiency of the ray tracing have great effect on the quality and practicality of the medium imaging.According to the micro changing and wave front rebuilding of 3D ray tracing,we proposed a quick arithmetic applying to 3D complex medium seismic wave traveling time.But it needs great amount of calculation.We put up parallel calculating technology and design a dynamic loading balance policy.So we can realize the parallel calculation of 3D ray tracing and pre stack depth migration on distributed parallel computers. |
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| Keywords: | Pre stack depth migration 3D ray tracing Parallel calculation of traveling time Dynamic loading balance Migration aperture. |
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