加速度重锤震源在地震勘探中的应用

在国际勘探市场上的安全敏感地区,地震勘探严禁使用炸药震源;在某些特殊地表条件地区,大型可控震源难以展开。在这类情况下可使用基于普通重锤震源改进的加速度重锤震源。本文以AF450型为例,首先介绍了加速度重锤震源的工作原理,然后通过对同一地点、采用不同震源方式得到的地震剖面进行对比和分析,确认加速度重锤震源是一种高效且环保的激发方式。重锤震源激发所得资料中缺少的高频成分可通过处理手段进行补偿。因此,加速度重锤震源可成为某些特殊地段地震勘探的有效替代激发源。

An accelerated weight drop in seismic acquisition

Nowadays dynamite is strictly forbidden as seismic acquisition source in security-sensitive areas of the international market,and heavy vibrators cannot be used in some rough terrain.In this case, improved accelerated weight drop can be used in this kind of terrain.Taking AF450,an improved accelerated weight drop,as an example,we first introduce its operational principle in this article. Then we compare seismic data with this weight drop and other sources in the same area.The results prove that the accelerated weight drop is efficient and environmental.High frequency component absented in the data acquired by the accelerated weight drop can be compensated by processing methods.So the accelerated weight drop is an effectively alternative source for some special terrain.