摘要
在河南禹州煤田景家洼矿区勘探中,遇到一层约90米左右的长石石英砂岩(俗称平顶山砂岩),钻进效率低,材料消耗大,通过ZK—09孔改用冲击回转钻进,取得了较好效果,介绍在硬岩层运用多工艺技术的施工方法。
During exploration in the Jingjiawa mine of the Yuzhou coalfield in Henan,a layer of approximately 90m feldspar quartz sandstone（so called the Pingdingshan sandstone） encountered severely reduced the drilling efficiency and over-consumed materials.Jump bit rotary drilling was applied to hole ZK-09 and achieved good result.This paper introduced diversified drilling applications in hard rock beds.
出处
《安徽地质》
2010年第1期65-66,73,共3页
Geology of Anhui
关键词
液动冲击回转钻进
硬岩层
钻进效率
hydraulic jump bit rotary drilling
hard rock beds
drilling efficiency
