抽油杆防脱器的合理设置  

Proper Installation of Anti-off-Screw Device on Sucker Rod String.

作　　者：王殿科[1] 

机构地区：[1]大港石油管理局滩海工程公司

出　　处：《石油机械》1994年第11期23-27,10,共5页China Petroleum Machinery

摘　　要：油井内抽油杆柱通常受到两种松扣扭矩的作用,即上部悬绳器钢丝绳打扭形成的扭矩和下行程时抽油杆螺旋弯曲变形产生的扭矩。为防止抽油杆柱在这两种松扣扭矩作用下产生脱扣,应在抽油杆柱上设置滚珠式防脱器,文中对防脱器的合理设置问题进行了分析和探讨,并给出了防脱器的合理安装位置及数量。The sucker rod string in a well is usually subjected to two kinds of off-screw torques, i.e. the torque caused by the twisting of the polished rod wireline and the torque caused by the spiral bending deformation of the string on the down stroke. To prevent the sucker rod string from off-screwing under the action of the above-mentioned torques, an appropriate number of ball-type anti-off-screw devices should be installed in place on the rod string, as has been explained in the article.

关 键 词：抽油杆 防脱器 安装 机械采油 

分 类 号：TE933.203[石油与天然气工程—石油机械设备]