焊管2024，Vol.47Issue(7)：26-31,6.DOI:10.19291/j.cnki.1001-3938.2024.07.004
上扣扭矩对特殊螺纹接头能量耗散的影响
Effect of Make-up Torque on Premium thread Connection Energy Dissipation
摘要
Abstract
Regarding the issue of reduced sealing performance of premium thread connection due to dynamic loads in high-temperature and high-pressure wells,based on the fretting contact theory,the critical slip state of the sealing surfaces was analyzed,and the energy dissipation and energy ratio of premium thread connection under different make-up torque were studied.The research results indicate that with an increase in make-up torque,the stress and contact pressure of the premium thread connection increase,and the adhesive region on the sealing surface gradually enlarges.Properly increasing the make-up torque without causing strength failure can reduce the energy dissipation on the sealing surface caused by dynamic loads and mitigate wear induced by slippage,thereby improving the sealing performance of the connection.Under three types of make-up torques and internal pressure of 50～90 MPa,the sealing index of the connection is greater than the critical sealing index under the corresponding internal pressure,meeting the sealing requirements of the connection.Through the research,the relationships between the make-up torque,energy dissipation and energy ratio are clarified,which can provide reference for the research of sealing performance of premium thread connection under dynamic load.关键词
特殊螺纹接头/上扣扭矩/能量耗散/能量比率Key words
premium thread connection/make-up torque/energy dissipation/energy ratio分类
能源科技引用本文复制引用
唐家睿,于洋,苑清英,张锦刚,余晗,曹银萍,李远征,晁利宁..上扣扭矩对特殊螺纹接头能量耗散的影响[J].焊管,2024,47(7):26-31,6.基金项目
中国石油天然气集团有限公司科技项目"提高页岩气井抗套损能力的新型套管研发"(项目编号2020B-4020). （项目编号2020B-4020）
