VSP处理中标量波场分离方法比较分析

Comparison and analysis of scalar wavefield separation in VSP processing

本文详细阐述了wave-by-wave波场分离方法的原理及其适用条件,并对几种常用的波场分离方法:f-k滤波、中值滤波、均值滤波的原理和优缺点做了简单介绍。用这四种方法分别处理了地面近零井源距VSP数据、地面三维VSP和海上三维VSP数据,并做了比较分析。结果表明,wave-by-wave波场分离方法较其他方法处理效果最优。

In this paper,we make a detailed description of the principle and applied condition of the wave-by-wave wavefield separation method,and make a short introduction of the principles as well as advantages and disadvantages of the commonly used methods—f-k filtering,median filtering and mean filtering.By using these four methods separately in the nearly zero offset VSP data,land 3D VSP data and ocean 3D VSP data,we make a comparison and finally get a conclusion that the wave-by-wave method is better than the others.