折射静校正技术在宣东地震资料处理中的应用

当地震数据中存在较大的静校正量时，利用模型道与各道互相关求取时差的反射波静校正方法往往不能奏效，其主要原因是得不到好的模型道，当原始资料的信噪比很低时，这一问题更加突出，因此必须首先解决好野外一次静校正。近年来，针对复杂地形和地表结构的折射波静校正，总差分折射静校正方法和基于速度模型的反演静校正方法被广泛应用。在静校正问题严重的宣东地区为例，综合运用了这两种折射静校正方法进行三维地震资料的处理，取得良好效果。

Application of Refraction Static Correction Technique in Xuandong Area Seismic Data Processing

When a larger static correction range existed in seismic data, the method of reflection static correction to seek moveout by mutual correlation between the model channel and other channels is usually not successful. The main causation is hard to get a good model channel, especially when the signal to noise ratio of source material is very low. Thus the primary field static correction must be figured out. In recent years, refraction static correction, total difference refraction static correction and inverse static correction based on velocity models are widely applied. Take the badly problematical static correction Xuandong area as an example, synthetically take the advantage of the two kind of refraction static correction methods to carry out 3 D seismic data processing and good result is acquired.