上、下击释放提升器的工作原理及力学分析  

Operating Principle and Mechanical Analysis of Up/Down-Jarring Releasing Overshots,

作　　者：夏元白[1] 张本奎[1] 李宗明[2] 

机构地区：[1]西南石油学院 [2]四川石油管理局钻采工艺研究所

出　　处：《石油机械》1991年第8期29-34,47,共7页China Petroleum Machinery

摘　　要：上、下击释放提升器在工作时,将震击力传至被卡工具,可进行并下解卡作业;用震击力剪断剪销,撑开卡爪,可释放工具。经模拟试验可测得剪销断裂功A_k和算出最大冲击力P_(dmax)。只要操作者掌握冲击能U_d和断裂功A_k的大小,就能比较可靠地进行井下解卡并打捞或往井下投放其它工具等作业。The up/down-jarring releasing overshots together with the upward/downward jars, can be used to retrieve the downhole stuck tool by transmitting the jarring force to the stuck tool, and also to release the tool from it by shearing the catcher pin with the help of jarring force. The work A_k done for shearing the pin and the max imum impact force P_(dmax) can be measured and worked out by simulating test. The operator can accomplish the operations of retrieving the stuck tool or running some given tool in the hole reliably, so long as he has a good grasp of the impact energy U_d and the shearing work A_k.

关 键 词：上击器 下击器 解卡 钻具 

分 类 号：TE921.9[石油与天然气工程—石油机械设备]