全面迭缩式不提钻换钻头技术应用于中国大陆科学钻探的前期研究

Initial Study on The Use of The Fully telescopic Retractable Bit in The Continental Scientific Drilling of China

摘要:

介绍了全面迭缩式不提钻换钻头钻具的结构、工作原理和使用特点，分析了此种钻具应用于中国大陆科学钻探中的前景及需要解决的问题。

Abstract:

The structure, operating principle and the features of the fully telescopic retractable bit are described; the prospect of use of the tool in the continental scientific drilling of China and some problems present with it are analysed.