被卡钻杆的环向聚能弹爆破切割技术及应用  

Blast cutting technology of hoop cavity effect cutter shot for recovering stuck drill pipe

作　　者：吕小师[1] 王光勇[1] 苗子伟[2] 

机构地区：[1]河南理工大学土木工程学院,河南焦作454000 [2]河南省煤田地质局物探测量队,河南郑州450000

出　　处：《辽宁工程技术大学学报（自然科学版）》2012年第1期73-76,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50874039);河南省教育厅自然科学基金资助项目(2011A580003);河南理工大学研究生教育改革基金资助项目(2010YJ05)

摘　　要：为了能有效地通过爆破切割来处理被卡钻杆,运用聚能原理设计了环向聚能切割弹,成功将钻杆沿钻头顶部与钻杆连接处的水平面切断,回收了钻头以上全部钻杆.结合工程实例,介绍了环向聚能切割弹的设计方案,并针对实际施工过程中的药量确定、网路设计、防水措施等作了详细说明,对类似工程施工具有一定的参考价值和指导意义.The hoop cavity effect cutter shot was designed for using the cumulative energy principle to recover the stuck drill pipe effectively through blast cutting.The plane jointing drill bit and drill pipe was cut off,and the whole drill pipe above the drill bit was successfully recovered.Combining with engineering practice,this paper presents the design of the hoop cavity effect cutter shot,and the detailed explanation of the explosive quantity,network design,waterproof measures in the engineering practices.The technology is very useful and significance for a similar engineering operation.

关 键 词：控制爆破 被卡钻杆 环向聚能弹 爆破切割 聚能效应 爆炸能量 聚能流 聚能弹结构设计 

分 类 号：TG482[金属学及工艺—焊接]