The working principle of the controllable eccentralizer rotary steerable drilling tool is presented. 摘要介绍了所研制的可控偏心器旋转导向钻井工具的工作原理。
A rotary steering tool scheme was developed,and its steering mechanism was investigated intensively in this paper. 提出了一种旋转导向工具设计方案，并对其实现旋转导向的机理进行了深入研究。
