调制式旋转导向钻井系统工作原理研究

Principle of power drive rotary steering drilling system.

旋转导向钻井技术是 2 0世纪 90年代发展起来的以旋转导向钻井系统为核心的钻井新技术 ,其中旋转导向钻井系统主要由井下旋转导向钻井工具系统、双向通讯系统和地面监控系统三大部分组成。在简述旋转导向钻井系统国内外发展概况和结构特点后 ,着重论述了调制式旋转导向钻井系统的总体方案设计 ;井下调制式旋转导向工具系统的结构设计和导向力的控制 ;井下随动稳定平台控制系统的结构设计和控制原理。对稳定平台的计算结果表明 ,稳定平台的摆动幅度在± 14°时 ,系统的控制力仅下降 1% 。

Rotary steering drilling is a new drilling technology developed in 90's of 20th century. Its core technique is the rotary steering drilling system (RSD system). The RSD system is mainly comprised of downhole RSD tool system, bi-directional communication system and surface monitoring and control system. The history and design features of the RSD system are introduced, and the overall design scheme of the RSD system and its operating principle are expounded in detail. And a tentative research on the control of the steering force and roll stabilization of the control units is made.