径向水平井生产管在内压下直径增长分析

采用爆破测试和有限元软件SAP5 0计算两种方法得到超短半径径向水平井生产管在内压作用下的胀径值并进行了对比。结果表明 :(1)A6 0 6薄壁管比A6 0 6厚壁管胀径值大 ,但两种管不承受弯曲仅承受内压时的胀径值并不大 ,70MPa下的最大值仅为 0 0 2 8mm ;(2 )有限元计算理论胀径值比实测胀径值大 ;(3)两种试验管在内压和弯曲共同作用下的胀径值约为内压直管胀径值的 7～ 10倍 ,说明生产管在内压和弯曲的共同作用下直径急剧膨胀 ,这对于转向器结构设计、调整间隙和制定径向水平井施工方案具有重要意义。

Analysis on diameter increasing of te producing tube of URRS under inner pressure

Two method applying explosive test and FEA software SAP5.0 respectively are used to calculated diameter increasing value of the producing tube of URRS under inner pressure and the results are compared. The analysis results show that: (1) expanding diameter increment of A606 thin-wall pipe is higher than that of A606 thick-wall pipe, but expanding diameter increment of both pipes is small as supporting inner pressure but not bending. The max increment is only 0.028mm under 70MPa pressure; (2) Calculated increment using FEA method is higher than that of actual measurement; (3) Expanding diameter increment of both pipe supported combed action of inner pressure and bending is 7～10 times of that supported inner pressure only.