双管定向钻进技术在祁南矿313工作面的应用  

Application of double pipe directional drilling technology in 313 face of Qinan Mine

作　　者：徐瑞[1] 洪建俊 张杰 XU Rui;HONG Jianjun;ZHANG Jie(Huaibei Mining Limited Company,Huaibei 235001,China;China Coal Technology and Engineering Group Xi’an Research Institute,Xi’an 710071,China)

机构地区：[1]淮北矿业股份有限公司,安徽淮北235001 [2]中煤科工集团西安研究院有限公司,陕西西安710071

出　　处：《煤矿安全》2021年第7期121-124,共4页Safety in Coal Mines

摘　　要：针对祁南矿313工作面碎软煤层中顺煤层长钻孔施工时,煤层倾角大和32#煤碎软的问题,利用双动力头钻机及配套钻具,开展钻杆、套管双管定向钻进工艺研究;通过关键设备选型、钻杆和钻杆钻头、套管和套管钻头钻具选配、风动定向钻进工艺参数优化以及提出钻杆在套管内大直径筛管护孔等方法及试验,有效提高顺煤层钻孔深度,实现顺煤层长钻孔轨迹可控,并提高了地层适应性。In view of the problems of large dip angle of coal seam and soft broken coal seam of 32#coal seam in the construction of long borehole along the coal seam in the 313 working face of Qinan Coal Mine,using double power head rig and auxiliary drilling tools,the research on drill pipe and casing double pipe directional drilling technology is carried out;through the selection of key equipment,selection of drill pipe and drill pipe bit,selection of casing and casing bit,optimization of pneumatic directional drilling process parameters,and the proposed drilling pipe in the casing of large diameter screen hole protection methods and tests,all theses effectively improve the depth of drilling along the coal seam,realize the control of the long drilling path along the coal seam,and improve the adaptability of the formation.

关 键 词：碎软煤层 顺层长钻孔 双动力头钻机 双管定向钻进 大直径筛管护孔 

分 类 号：TD41[矿业工程—矿山机电]