方位各向异性介质的VSP资料处理

本文从理论上推导了二维EDA介质中的弹性波动方程，并对其进行了数值模拟，获得了当坐标系旋转30°时用点源激发的三分量波场切片及用相互正交的横波震源在同一位置激发，用两个相互正交的水平检波器接收的四分量全成记录。用双源四分量同时旋转方法对从两种EDA介质中采集的四分量作分析，得到了分裂的快，慢横波分量和它们间的时间延迟以及介质的裂隙方位角。从分离的快横波分量中提取反射能量，然后用VSP-CDP变换方法作成像处理。

VSP Data Processing in Anisotropic Mdeia

It is deduced in this paper theoretically the elastic wave equation in two dimen-sional EDA media, for which numerical modeling is carried out. We acquire the three com-ponent wave field section under point source exciting after a 30 rotation of the coordinate, and the four component synthetic recording, and we also acquire the split fast and slow S wave components, the delay time between them, and orientation of fractures through anal-yese of the sampled four components from two EDA media by means of synchronous rota-tion of the double source four components. Reflection energy is extracted from the split fast and slow S wave components,and then imagery processing is carried out for it using VSP-CDP transform method.