气动贯通式潜孔锤反循环连续取心（样）钻具系统研制及使用效果  

DEVELOPMENT AND APPLICATION EFFECTS WITH HOLLOW─STEM DTH HAMMER AND REVERSE CIRCULATION SAMPLING SYSTEM

作　　者：蒋荣庆[1] 殷琨[1] 王茂森[1] 

机构地区：[1]长春地质学院

出　　处：《地质与勘探》1996年第3期55-60,共6页Geology and Exploration

摘　　要：分析了硬、脆、碎、坍、漏复杂地层钻探施工的难题，结合地质岩心勘探特点和要求，研制了气动贯通式潜孔锤反循环连续取心（样）钻具系统，通过生产性试验取得显著的经济效益和社会效益。The atical analysis the drilling problems which happened in the complicated formations,such as hard leakage brokenbrittle and collapsible formations.Combine with the demands and characteristics of the exploration core drilling,the hollow-stem DTH hammer and reverse circulation sampling system have been developed. Theough the field test,remarkable economical and social effects have been achieved.

关 键 词：贯通式潜孔锤 反循环连续取心 钻具 

分 类 号：P634.4[天文地球—地质矿产勘探]