摘要
介绍一种新型大直径钻具──差动式多钻头组合钻具的结构原理、力学特性和关键技术等内容。
A multi-head large diameter drillbit containing differential mechanism were designed. The structure drilling process,mechanical properties and key techniques of this new kind of drillbit were introduced.
出处
《地质与勘探》
CAS
CSCD
北大核心
1998年第3期60-62,共3页
Geology and Exploration
