基于PROMAX系统提高初至波拾取精度的方法

初至波拾取是做好层析成像等静校正处理的基础环节，同时也是人工工作量较大的环节。如何快速高精度拾取初至波是一线处理人员面临的一个实际问题。通过对复杂探区地震资料的初至波特征的分析，提出一种运用PROMAX系统中的一些相关模块组合进行初至波拾取的方法。该方法只需少量的人工操作，就能方便快速准确完成初至渡拾取。该方法包括如下几步：初至的自动拾取、干扰道的识别与剔除、异常值处理。应用实例表明，该方法既能快速改善初至波拾取精度，又具有较强适应能力，基本能够解决复杂探区初至拾取这一难题。

On the Method of Improving First Break Picking Precision by Means of PROMAX System

First break picking is the fundamental work in completing statics correction such as tomography and needs amount of workload. How to rapidly collect accurate first break is a practical issue for the frontline operators to cope with. On the basis of the characteristic analysis of first break of seismic data in complex exploratory area, this paper represents a method of first break picking with the help of some relevant module combinations in PROMAX system. The method makes the task easy, rapid and accurate with a small number of manual operations. It consists of some procedures such as automatic picking of first arrival, identification and removal of disturbance channels and process- ing of abnormal values. Application proves that because the method not only improves the accuracy of first break picking but also has better adaptability, it can solve the problem of first break picking in complex exploratory area.