摘要
提出了一种Φ177.80 mm×8.05 mm K55热采井特殊螺纹设计,依照ISO/PAS 12835标准对该特殊螺纹进行材料性能评估以及材料模型和结构模型下的有限元分析。其中分析材料性能得到的不同温度下的应力-应变曲线特征点可作为数据输入到有限元软件中。采用有限元方法评估了接头在最佳上扣及温度循环条件下,不同结构公差的最差工况,材料性能变化对密封能力的影响,以及最后一次上扣扭矩要求。最后分析了特殊螺纹在温度载荷循环作用下结构的完整性。极限加载应力分析显示在整个温度加载循环条件下特殊螺纹未出现滑脱、颈缩、屈曲等现象。
A design ofΦ177.80 mm×8.05 mm K55thread type for the thermal recovery well service is proposed.The material evaluation of the thread type is conducted as per ISO/PAS 12835,and the FE theoretic analysis under the material model and the structural model is made.The characteristic point of stress and strain curves at different temperatures as obtained via the material property analysis can be input as data into the FE software.The FE method is used to evaluate the effects by the poorest working conditions of different structural tolerances and the material property change on the sealing performance under the optimal make-up and temperature circulation conditions,and the requirement for the torque for the last make-up.Finally the structural integrity of the thread under the effect by the temperature load circulation is analyzed.It is revealed via the analysis of the ultimate loading stress that no slipping,necking and buckling of the thread are found under the condition of the entire temperature loading circulation.
作者
刘洋
张伟
柳玉伟
刘国平
LIU Yang;ZHANG Wei;LIU Yuwei;LIU Guoping(Jiangsu Changbao Precision Steel Tube Co.,Ltd.,Changzhou 213200,China)
出处
《钢管》
CAS
2023年第4期59-64,共6页
Steel Pipe
