Φ114.3 mm×8.56 mm 140V套管抗外挤能力研究  

Study on External Collapse-resistance of Φ114.3 mm×8.56 mm 140V Oil Casing

作　　者：许雷明 高连新[2] 戴涵洋 张恒 XU Leiming;GAO Lianxin;DAI Hanyang;ZHANG Heng(Jiangsu Changbao Precision Steel Tube Co.,Ltd.,Changzhou 213200,China;School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;Jiangsu Changbao Steel Tube Limited Co.,Changzhou 213000,China)

机构地区：[1]江苏常宝普莱森钢管有限公司,江苏常州213200 [2]华东理工大学机械与动力工程学院,上海200237 [3]江苏常宝股份钢管有限公司,江苏常州213000

出　　处：《钢管》2023年第4期21-25,共5页Steel Pipe

摘　　要：针对石油套管抗外挤能力计算这一热点问题,选取10支Φ114.3 mm×8.56 mm 140V套管进行几何尺寸和机械性能检测,并通过挤毁试验得到其抗挤强度;在考虑几何缺陷和实际力学性能的情况下,建立计算套管抗挤强度的有限元模型,对比模拟结果、理论计算结果及试验结果表明:模拟结果与试验结果相近,偏差-0.77%~+7.0%,而理论计算结果误差较大,偏差23.84%~37.56%。该有限元模型还可用来分析壁厚不均度和椭圆度对该规格套管抗挤强度的影响。Addressing the hot issue of calculation of the oil casing external collapse-resistance,10 pieces of theΦ114.3 mm×8.56 mm 140V casing are selected and subjected to both geometric dimension measurement and mechanical property tests.And the pipes are also subjected to the collapse test to determine their collapse resistance.Meanwhile based on the consideration of the geometric defects and the actual mechanical properties of the pipes,a FEA model for calculating the collapse strength of the casing is set up.After comparing the results of the simulation,the theoretic calculation and the tests,it is demonstrates that the result of the simulation is close to that of the tests,showing a deviation of-0.77%-+-7.0%,whereas the theoretic calculation result shows an obvious error,i.e.a deviation of 23.84%~37.56%.Thanks to the above mentioned model,the influence by the wall thickness unevenness and the ovality on the collapse re-sistance of the said oil casing is analyzed.

关 键 词：石油套管 140V 抗挤强度 试验研究 有限元分析 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]