【作者】 杨斌； 练章华； 王强； 姚辉前； 陈勇；

【Author】 Yang Bin (State Key Lab of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu),Lian Zhanghua Wang Qiang.

【机构】 西南石油大学油气藏地质及开发工程国家重点实验室； 胜利油田有限公司孤岛采油厂； 山东德州钻井研究所；

【摘要】 利用有限元模拟分析方法,研究了新一代旋转可膨胀管系统的力学特性,得出如下结论:(1)膨胀心头旋转角速度对可膨胀管自由端面总轴向位移、对可膨胀管壁厚减薄量、对膨胀后膨胀管最大残余应力的影响均很小;(2)随着膨胀心头旋转角速度的增加,所需最大膨胀力迅速减小,可用拟合多项式表示;(3)随着膨胀心头旋转角速度的增加,膨胀过程中产生的最大接触应力整体上呈增加趋势,也可用拟合多项式表示。更多还原

【Abstract】 The mechanical feature of new generation of rotating expandable pipe system is studied by using the finite-element simulation analysis method and the following conclusions are drawn:(1) The speed of rotating angle of expandable head has little influence on the total axial displacement of the free end, the reduction of wall thickness and the maximum residual stress of the expandable pipe after expansion;(2) The desired maximum expansion force reduces rapidly with the increase of the speed of rotating angle of expandable head,which can be expressed by polynomial fitting method;(3) The maximum contact stress produced during the expansion tends to increasing on the whole with the increase of the speed of rotating angle of expandable head,which can also be expressed by polynomial fitting method.更多还原