套管极限挤毁强度的计算及有限元模拟  

Calculation and Finite Element Simulation of Ultimate Collapse Strength of Drivepipe

作　　者：刘洪涛[1] 徐蔼彦 赵密锋[1] 姬丙寅 周波[1] 史交齐 胡芳婷[1] LIU Hongtao;XU Aiyan;ZHAO Mifeng;JI Bingyin;ZHOU Bo;SHI Jiaoqi;HU Fangting(PetroChina Tarim Oilfield Company Limited,Korla 841000,China;Xi’an Serv Stress Engineering Technology Service Co.,Ltd.,Xi’an 710075,China)

机构地区：[1]中国石油天然气股份有限公司塔里木油田分公司,库尔勒841000 [2]西安三维应力工程技术有限公司,西安710075

出　　处：《机械工程材料》2021年第9期73-78,共6页Materials For Mechanical Engineering

摘　　要：对110钢套管进行几何尺寸测量、拉伸试验以及残余应力测试,采用一次二阶矩法计算了套管的平均极限挤毁强度;对套管进行了挤毁试验,并采用有限元模型模拟了套管的极限挤毁强度;将极限挤毁强度的计算结果、模拟结果及试验结果进行了对比。结果表明:试验套管平均极限挤毁强度的计算结果高于目标置信水平,且与试验结果相近,该计算方法适用于试验套管极限挤毁强度的计算;各套管极限挤毁强度的有限元模拟结果与试验结果相近,相对误差不超过5.8%,有限元模拟准确。Geometric size measurement,tensile test,and residual stress test were performed on 110 steel drivepipe,and the average ultimate collapse strength of the drivepipe was calculated by the first order second moment method.Collapse test was carried out on the drivepipe,and the ultimate collapse strength of the drivepipe was simulated by finite element model.The calculated results,simulated results and tested results of the ultimate collapse strength were compared.The results show that the calculated results of the average ultimate collapse strength of test drivepipe was higher than the target confidence level and close to the tested results.The calculation method was suitable for calculating the ultimate collapse strength of test drivepipe.The finite element simulated results of the ultimate collapse strength of each drivepipe were close to the tested results,and the relative errors were less than 5.8%,and the finite element simulation was accurate.

关 键 词：套管 极限挤毁强度 可靠性理论计算 有限元模拟 

分 类 号：TE37[石油与天然气工程—油气田开发工程]