关键词: 高位定向长钻孔, 成孔技术, 泥浆脉冲测量系统, 复合钻进

Abstract: In order to solve the drilling problems of large depth, large friction, complex rock formation and difficult slag discharge in the high ore directional borehole, through optimization of directional drilling equipment, application of mud pulse measurement system while drilling, high toughness auger Drill pipe column strength and effective slagging，directional drilling trajectory design and control technology optimization, and composite directional drilling process to reduce friction, etc., effectively improve the drilling depth of high-position directional long boreholes, greatly improve the slagging capacity of drilling construction, and enhance the adaptability and formation adaptability of high-position directional long-hole drilling technology. It is applied to the high-position directional long borehole construction of Taoyuan Mine II8221, and the maximum depth record of 956 m of high-position directional long borehole is successfully realized. The concentration of gas drainage in the later stage is high and the scalar quantity is large, which effectively solves the problem of recovery gas in the working face. It has achieved good results and provided valuable experience for the application research of high-position directional long hole drilling technology.