空气反循环钻探技术在矿山勘查中的应用  

Application of air reverse circulation drilling technology in mine exploration

作　　者：苏敬达 SU Jingda(Powerchina Zhongnan Engineering Corporation Limited,Changsha Hunan 410014,China)

机构地区：[1]中国电建集团中南勘测设计研究院有限公司,湖南长沙410014

出　　处：《钻探工程》2021年第12期38-42,共5页Drilling Engineering

摘　　要：在矿山勘查中,传统的岩心钻探技术存在成孔周期长、成本高等问题,而空气反循环钻探技术的施工效率高、成本较低。本文改进了空气反循环钻探技术的钻头和封隔套的流体构造,并将其应用到矿山勘查中。与传统岩心钻探技术相比,空气反循环钻探技术的钻进效率提高了70%~90%,成本降低了30%~50%,钻孔事故率降低了60%~70%,施工过程无泥浆污染,产生粉尘极少,实现了绿色勘查的要求。In mine exploration,traditional core drilling has problems such as long drilling period and high cost,while air reverse circulation drilling has high drilling efficiency and low cost.In this paper,the fluid structure of the drill bit and the packing sleeve for air reverse circulation drilling has been improved and applied to mine exploration.Compared with traditional core drilling,air reverse circulation drilling has increased drilling efficiency by 70%~90%with costs reduced by 30%~50%,the drilling accident rate reduced by 60%~70%,no mud pollution in the drilling process,and less dust,meeting the requirements of green exploration.

关 键 词：空气反循环钻探 矿山勘查 钻进效率 双壁钻杆 封隔套 反循环钻头 

分 类 号：P634[天文地球—地质矿产勘探]