旋转导向闭环钻井系统

ROTARY CLOSED-LOOP STEERABLE DRILLING SYSTEM

通过对比研究国内外有代表性的旋转导向钻井系统的组成及特点 ,介绍了旋转导向闭环钻井系统的集成方式、井下定向控制单元、地面监测系统 ,论述了旋转导向钻井工具在旋转钻进时具有连续三维导向和增大延伸长度的能力 ,可提高钻速 ,缩短建井周期 ,降低钻井成本 ,并详细阐述了国内正在开发的旋转导向闭环钻井系统(MRSS)的定向控制原理、5个组成部分及主要技术特点。认为只有开发和集成钻井信息管理与决策软件 。

Rotary closed loop drilling technology is one of the hi techs of today′s drilling industry, and it represents the direction of drilling technology in the future. The typical structures and characteristics of rotary closed loop drilling systems at home and aboard, together with their integrating methods, downhole directional controlling units, and surface monitoring systems are described.The rotary steerable drilling tools have many advantages, such as continuous 3D steering, extending reach in length, improving drilling speed, shortening completion time, and cutting down drilling cost, etc. A rotary steerable closed loop drilling system MRSS developed by Steering Drilling Institute is presented, focuses on its direction controlling principle, five parts of compositions, and main technical features. It stresses on the importance of developing and integrating drilling information and planning software.