波动方程叠前深度偏移PC集群并行计算技术

波动方程三维叠前深度偏移研究，是近年来国内外油气科研服务公司的研究焦点，运用PC集群式并行机结构的软硬件特点，进行波动方程叠前深度偏移，成为加速其庞大计算量的有效工具。本文基于地震波场成像基本算法的内在并行性，结合PC集群并行机的软硬件特点，提出2种算法处理流程对策，获得以较低的资金投入，而成功地实现了工业化生产规模的应用效果。并给出大庆油田兴城北地区60km^2三维地震资料处理的算例。结果表明，算法流程实用性能良好，具有较高的加速比，良好的扩展性及适应性。

The parallel computation and application for wave-equation prestack depth migration on PC-cluster

Oil and scientific companies have been focusing on the study of 3-D pre-stack depth migration of wave equation. The im-provement and cornbination on the software and hardware of PC cluster have been increasing helpful tool of handling over the huge computation of wave equation pre-stack depth migration. In this paper the industrialized computation has been successfully put into reality at a rather low price in virtue of the inherent parallel charac-teristic of the wave equation pre-stack depth migration arithmetie and high performance of the PC cluster system, which leads to two kinds of parallel flows. A 3-D seismic data processing example of this approach of Xingchengbwi area with the area of 60 km is pro- posed, and the result shows satisfied application ability of the flow, speeding-up ratio and high expansibility and flexibility.