天然气与石油2025，Vol.43Issue(2)：90-98,9.DOI:10.3969/j.issn.1006-5539.2025.02.012
水下井口密封圈的结构优化与负载响应分析
Structural optimization and load response analysis of subsea wellhead sealing gaskets
摘要
Abstract
Subsea wellhead and wellhead connectors usually utilize metal sealing gaskets to establish a sealed channel between production operation and the external environment.In order to study the structural characteristics of subsea wellhead sealing gaskets and the response characteristics of different gasket structural forms under environmental loads,this paper focuses on the 18-3/4 in(1 in=25.4 mm)10 K wellhead specifications.Using the finite element analysis method based on ABAQUS,the optimal structural parameters for the commonly used VX sealing gasket were determined.The gasket structure was then optimized according to its sealing characteristics,and the load response analysis was conducted for various gaskets structural forms.The results show that the optimal sealing cone angle θ for the VX sealing gasket is 22.7°～22.8°,and the optimal cone top diameter D is 507.8～508.4 mm.The VAX sealing gasket can significantly improve the contact stress and stress distribution on the sealing surface compared with VX sealing gaskets,although its load-bearing capacity is weaker.The annular groove on the sealing surface can effectively enable the sealing gasket to establish primary and secondary dual seals and increase the contact width of the primary seal,but do not improve gasket's load capacity.Within the load capacity range of the wellhead connector,environmental loads have minimal impact on the sealing performance of the sealing gasket.关键词
井口密封圈/井口连接器/结构优化/密封特性/负载响应Key words
Wellhead sealing gasket/Wellhead connector/Structural optimization/Sealing property/Load response引用本文复制引用
李勇,杨旭,蒋永义,黄荣吉,李伟,邱全平..水下井口密封圈的结构优化与负载响应分析[J].天然气与石油,2025,43(2):90-98,9.基金项目
中华人民共和国工业和信息化部高技术船舶科研项目子课题"水下采油树工程示范应用安装技术研究"(2023GXB01-04-004) （2023GXB01-04-004）
