三维静校正研究

A STUDY OF THREE-DIMENSIONAL STATICS

1. 成都地质学院;2. 地质部石油物探研究大队

1. Chengdu Geological College;2. Research Institute of Geophysical Prospecting for Petroleum, Ministry of Geology

本文研究了在动校正前自动寻找反射界面的最可能位置作为参考面,提取并校正横向时差,用权因子法求取时差后,分离出炮点、接收点的剩余时差,对三维理论记录进行了静校正处理,使剖面质量得到改善,把二维方法扩展到三维。

This paper deals with auto-searching of the most possible position of the reflection interface as the reference plane, extracting and correcting for lateral moveout before normal moveout. The moveout is computed by using weighted factor method to separate the residual moveout of shot-point and receiver. The seismic sections were improved in quality after static correction for 3-D synthetic seismograms. Thus, the 2-D seismic method finds its application in the three-dimensional statics.