注水井中封隔器长期工作后,因胶筒失效而不解封。在对注水井作业时,由于井下压力作用,会出现油管从井下大量窜出的现象,简称喷管,使作业不能正常进行,并且使大量油管报废,还极易造成安全事故。为解决这一问题,设计了注水井防喷管卡瓦。文章介绍了该卡瓦的结构、工作原理及设计要点。现场试验表明,在油管上顶力为120 kN时,该卡瓦能可靠工作。 Packer in the injection well long-term work, because of the failure of the plastic cartridge without decapsulation. When working on a water injection well, due to the downhole pressure, a large amount of tubing can be discharged from the well. In short, the nozzle can not work properly and a large amount of tubing can be scrapped. It is also likely to cause a safety accident. To solve this problem, the design of the injection well anti-spout slips. The paper introduces the structure, working principle and design points of the slip. Field tests show that the slips work reliably when the top force on the tubing is 120 kN.