油管特殊螺纹接头力学行为研究  

Study on Mechanical Behavior of Special Threaded Joints of Tubing

作　　者：曹梦雨[1] 王尊策[1] 徐德奎 闫月娟[1] 张冠男 CAO Meng-yu;WANG Zun-ce;XU De-kui;YAN Yue-juan;ZHANG Guan-nan(College of Mechanical Science and Engineering,Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Medium Treatment and Pollution Prevention,Northeast Petroleum University;Daqing Oil Production Engineering Research Institute;Operation Team of No.2 Oil Production Plant,Daqing Oilfield Co.,Ltd.)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江省石油石化多相介质处理及污染防治重点实验室 [2]大庆采油工程研究院 [3]大庆油田有限责任公司第二采油厂作业大队

出　　处：《化工机械》2020年第2期211-218,共8页Chemical Engineering & Machinery

基　　金：国家自然科学基金项目(11902072);黑龙江省青年科学基金项目(QC2016003);中国石油和化学工业联合会科技指导计划项目(2016-01-02);东北石油大学研究生创新科研项目(YJSCX2016-021 NEPU)。

摘　　要：为研究一体化管柱油管特殊螺纹接头在井下复合载荷作用下的力学行为,对某生产气井一体化管柱的H接头的受力变形情况开展了数值模拟。结果表明:过扭上扣在提升密封性能的同时会导致H接头密封面发生屈服,轴向拉力和外压的作用会明显降低接头的密封性能,轴向压力和内压的作用对接头主密封面的密封性能影响较小,弯矩对接头的强度和密封性能影响较小。In order to research the mechanical behavior of special threaded joints of integrated tubing string under combined downhole loads,a numerical simulation was carried out for H special threaded joints of integrated tubing string in a gas well.The simulation results showed that,the over-torsional buckling can improve the sealing performance of H joints and meanwhile incurs yield of the sealing surface,and the axial tension and external pressure can significantly reduce the sealing performance of the H joints.Both axial pressure and internal pressure on the sealing performance of the main sealing surface of H joints was small,including the bending moment on the strength and strength of joints.

关 键 词：特殊螺纹接头 油管 复杂载荷 连接强度 密封性能 

分 类 号：TQ055.81[化学工程]