焊管2024，Vol.47Issue(5)：47-52,6.DOI:10.19291/j.cnki.1001-3938.2024.05.007
薄壁管材特殊螺纹接头密封性能研究
Sealing Performance of Special Thread Joint of Thin-walled Pipe
摘要
Abstract
In order to solve the of high pressure leakage of the special threaded joints for thin-walled pipes applied in oil fields,adopting a combination of finite element analysis and full-scale test to analyse the influence of key parameters such as shoulder thickness,thread interferenceand sealing surface structure on the sealing performance of special threaded joints in thin-walled pipes.The results show that by increasing shoulder thickness,reducing thread interference and designing cone/cone sealing structure,the integral value of contact pressure of joint seal can be greatly improved,and the problem of high pressure leakage caused by insufficient sealing performance of thin-walled special thread oil casing can be better solved.According to this idea,two kinds of thin-walled special thread casing with common specifications are designed.The full-scale test proves that the two kinds of thin-walled special thread joints have excellent anti-sticking properties,and the sealing performance reaches 100%equal pipe body,which can effectively solve the problems of unstable screw-on and high pressure leakage of thin-walled special thread joints.关键词
薄壁套管/特殊螺纹/结构设计/密封性能Key words
thin-walled casing/special thread/structural design/sealing property分类
能源科技引用本文复制引用
杨晓龙,汪强,黄德全,晁利宁,苑清英,李远征,麻文昌..薄壁管材特殊螺纹接头密封性能研究[J].焊管,2024,47(5):47-52,6.基金项目
陕西省重点研发项目"多段体积压裂井用高性能SEW管材及螺纹连接关键技术研究"(项目编号2023-YBGY-309). （项目编号2023-YBGY-309）
