文献类型：期刊文献

英文题名：Design of spherical/conical seal structure for tubing or casing premium threaded connections based on Hertz theory

作者：Wang, Cheng[1];Shan, Han[1];Gao, Lianxin[1]

机构：[1]East China Univ Sci & Technol, Sch Machinery & Power Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：26

期号：5

外文期刊名：JOURNAL OF CERAMIC PROCESSING RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001626492200011)】；

基金：China Petroleum Science and Technology Innovation Fund Project "Research on New Type of Metal Seal of Expanding Sleeve Pipe Joint for Horizontal Well Sleeve Variation Management" (2019D-5007-0305), National Natural Science Foundation of China (NSFC) Joint Fund for Petrochemical Industry (JFPC) Key Project "Fundamental Theory Research on Nonlinear Dynamics and Dynamic Safety of Ultra-deep Well Drilling Column" (No. U1663205) .

语种：英文

外文关键词：Premium thread connection; Metal to metal seal; Hertz theory; Contact pressure; Contact length

摘要：By using Hertz theory, the location of yielding and the expression of contact center pressure are obtained after interference fit of the spherical/conical seal structure of premium threaded connections. Combined with the structural characteristics of premium threaded connections, the expression of contact pressure is calculated. The magnitude of contact length and contact pressure of spherical/conical seal for premium threaded connections are calculated by using the Herz theory and the results are compared with those obtained by the finite element method. According to the calculation results, a CBS4 premium threaded connections with a new spherical/conical sealing structure is designed, and finally a machining test is conducted to prove the feasibility of the method. New premium threaded structure is obtained with small errors compared to the results of Hertz theory and finite element simulations, which is similar to experimental tests. The research results are applicable to a certain range of tubing or casing premium thread connector.