相移法偏移在小型计算机上的实现

PHASE-SHIFT MIGRATION BY MINICOMPUTER

1. 江苏石油勘探开发公司;2. 同济大学

本文介绍了F-K域相移法波动方程偏移在TIMAP小型计算机上的实现方法。重点介绍了提高执行效率所采用的相移因子造表,变延拓步长,二维滤波等几种方法和试验结果。提出了F-K域偏移所必然出现的周期性边界效应问题及网格选择的依据。

What was introduced here was the wave equation migration technique in F-K domain by the minicomputer of model-TIMAP. The main points of this paper were-the table of the phase-shift factors, the variation of the continuation step length and the technique of the two-dimensional filtering. All of them were of service to the improvement of the effectiveness of this operation. The test results were presented.