折射和层析静校正量计算方法的综合应用

Integrative application of computational approaches of refraction and tomographic statics

本文在分析了折射静校正和层析静校正方法理论的基础上,通过对实际三维地震资料和二维地震资料的应用,得出了折射波静校正能够较好地解决长、短波长静校正问题;而层析静校正方法更具有不依赖于折射层,模型可适用于大多数勘探环境,计算方法操作简便,适应于任何观测系统的优点;并且指出了该方法的缺点及使用的前提条件。针对委内瑞拉两个项目的需求,运用综合折射静校正和层析静校正方法计算基准面静校正量,取得了较好的效果,解决了单个静校正方法无法解决的难题。

Based on analyzing the theory of refraction and tomographic static corrections and through application of them to real 2-D and 3-D seismic data, the paper resulted in such conclusion; the refraction static corrections can better solve the long and short wavelength issues of static corrections; while the tomographic static corrections have such advantages as free from relying on refractor,the model is suitable for majority of exploration environments, easy operation of computational approach and adaptable to any geometry patterns. The paper also pointed out the disadvantages of the approaches and precondition of usage. For the demands of two Venezuela projects,the good results have been achieved by integrating refraction with tomographic static corrections to compute datum statics, solving the difficulties that are unable to be solved by single approach of static corrections.