桥式偏心密封段的研制

Development of Bridge Type Eccentric Sealing Section

针对桥式偏心分层注水管柱在进行分层压力测试时,现有密封段操作繁琐、技术难以掌握,且在压差大的情况下存在密封段不易起出来的问题,研制了一种以免调节皮碗作为密封件的桥式偏心密封段。该密封段设计了一种平衡机构,它使得密封段在进行密封时起到更优的密封效果;皮碗不需要测量调节,降低了操作难度;此外,设计了单向阀,上提密封段时,它可以使密封的内外压力达到平衡,从而可以很容易地起出测试密封段,并解决了压差大的情况下密封段不易起出来的问题。

During the stratified pressure test for the bridge type eccentric layered water injection string,complicated operation of the existing sealing section is difficult to master,and the sealing section is hard to pull out in case of large pressure difference.A bridge type eccentric sealing section is developed with a non-adjustable leather bowl as seal.The sealing design of a balance mechanism can seal more easily,and the leather bowl does not require the measurement adjustment,which reduces operation difficulty.In addition,the design of the one-way valve can make inner and outer pressure of the sealing reach equilibrium while lifting the sealing section,thus it is very easy to pull out test sealing section,and also solves the problem of large pressure difference.