摘要
根据湘西金矿深厚陡倾角地层的特点,采用传统防斜方法(如满眼组合防斜技术、钟摆组合防斜技术)不能保证钻孔垂直度,首次使用随钻测斜仪配合螺杆定向钻进先施工引导孔,再用气动潜孔锤冲击回转钻进快速完成大口径充填孔扩孔,取得了较好的效果。采用螺杆能较好地实现定向钻进,钻孔轨迹偏斜位移能被控制在8.67 m范围内。
In view of the deep and high dip strata in Xiangxi Gold Mine,where the traditional deviation prevention methods,such as the packed-hole drilling string,the pendulum drilling string,cannot guarantee the borehole verticality,the mud motor was used with MWD for the first time to drill a pilot hole,and then pneumatic DTH drilling to quickly ream it to the large diameter filling borehole,achieving good results.The mud motor can provide better directional drilling with the deviation controlled within 8.67m.
作者
伍新民
易振兴
吴俊贤
宋会娟
WU Xinmin;YI Zhenxing;WU Junxian;SONG Huijuan(Engineering Geological Corps of Hunan Provincial Nonferrous Metals Geological Exploration Bureau, Changsha Hunan 410007, China;Team 1 of Hunan Provincial Nonferrous Metals Geological Exploration Bureau, Chenzhou Hunan 423000, China)
出处
《探矿工程（岩土钻掘工程）》
2020年第6期26-29,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
充填孔
螺杆钻
定向钻进
随钻测斜
气动潜孔锤
filling hole
mud motor
directional drilling
measure while drilling
pneumatic DTH hammer
