Xi'an Research Institute Company Limited,China Coal Technology and Engineering Group

介绍了5种定向钻进技术,概述各自的定向原理、技术特点和应用概况,总结了煤矿井下使用的稳定组合钻具定向钻进技术和孔底马达滑动定向钻进技术的发展历程和存在的不足;结合当前已有的定向钻探设备及技术,指出高强度通缆钻具和适合煤矿井下环境的无线传输技术是实现复合钻进技术的难点;井下信息闭环控制系统和先进的导向工具系统是实现旋转导向技术的难点;随钻近钻头地质测井技术是实现地质导向技术的难点;最后指出了高度自动化和智能化导向钻进是定向钻进技术的发展方向,并为加速煤矿井下定向钻进技术的发展提出了相关建议。

The paper introduced five different directional drilling technologies and stated each directional principle,technical features and application situation. The paper summarized the development progress and shortages existed in the directional drilling technology with stabilized drilling assembly and the sliding drilling technology with downhole motor applied in the underground coal mine. In combination with the available directional drilling equip ment and technology,the paper pointed out that a high strength full cable drilling tools and the wireless transmission technology suitable for undergroun d mine were the difficulty to realize a compound drilling technology. An underground information closed-loop control system and the advanced steering t ool were the difficulty to realize a rotary steering technology. A geological logging technology while the bit drilling was the difficulty to realize a geologic al steering technology. Finally,the paper pointed out that a high automation and intelligent steering drilling would be the development orientation of the directional drilling technology. Related proposals were provided to speed up the development of the directional drilling technology in the underground m ine.