摘要
重庆市秀山县鱼泉锰矿深部勘查ZK1010钻孔,钻进过程中常出现断杆事故,用常规公锥打捞,起钻中途常出现跑钻事故,使事故复杂化。最后采用可退式捞矛多次成功地处理了钻杆折断事故。结合该工程实例,介绍了可退式捞矛的工作原理及优点。
In the drilling process of ZK1010 which is a deep exploration hole of Yuquan manganese mine in Xiushan of Chongqing,drill pipe breaking often happened. Drill pipe falling often occurred during tripping out process,which made the accidents even worse. Finally,by the use of releasing fishing spear,the drill rod breaking is successfully handled for times. The paper introduces the releasing fishing spear about its working principle and advantages.
出处
《探矿工程（岩土钻掘工程）》
2015年第2期15-18,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
中国地质调查局地质调查项目"套管钻进技术在西部地区成矿带找矿中的应用示范"(编号:12120113097800)
关键词
岩心钻探
孔内事故
可退式捞矛
卡钻
跑钻
core drilling
hole accident
releasing fishing spear
sticking
drill pipe falling
