福建省某金矿钻探取心工艺研究

Study of Core Drilling Technique in a Fujian Gold Mine

针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ＺＪＳ系列钻具。根据不同地层所采用的钻头和取心器，介绍了不同地层的钻进取心方法和取得的成果。

A ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core. The core drilling method and the obtained achievement are introduced with respect to the bit and core barrel used in different formation.