抽油杆上下运动时,下部受力状态十分复杂。所以,抽油井正常抽汲一个阶段后,可能因种种原因如弯曲、扭转力或上扣不紧致使抽油杆脱扣。新疆克拉玛依百口泉采油厂去年仅脱扣事故就有24井次,占全年检泵井的23％,严重地影响了抽油井时率。为了减少抽油杆脱扣事故,抵消或减少接头公母扣面间的径向位移,设计了防脱扣短节(见图)。设计时,结构上采用径向转 Sucker rod up and down movement, the lower part of the force state is very complicated. Therefore, after a normal pumping stage, the sucker rod may be tripped for various reasons, such as bending, twisting force, or loose fitting. Last year, only one tripping accident occurred in Karamay Baikouquan Oil Production Plant in Xinjiang, accounting for 23% of the total pumping wells in the whole year, seriously affecting the pumping rate. In order to reduce the tripping accident of the sucker rod and to offset or reduce the radial displacement between the male and female joint surfaces of the joint, an anti-tripping short section is designed (see figure). Design, the structure of radial rotation