水泥环对在役套管柱抗挤强度影响分析  

Analyses on the Influence of Cement Ring on Anti-squeeze Strength of Casing Pipe in Service

作　　者：申昭熙 赵楠 李建君[4] 王建军 SHEN Zhaoxi;ZHAO Nan;LI Jianjun;WANG Jianjun(Corporation of Engineering Material Institute,China Petroleum Group(Xi'an,Shaanxi 710077,China);National Key Laboratory for Serving Behavior and Structure Safety of Petroleum Tubular Goods and Equipment Materials(Xi'an,Shaanxi 710077,China);Operating Section of Hutubi Natural Gas Storage Tank,Xinjiang Oilfields Branch,PetroChina(Hutubi,Xinjiang 831200,China);Institute of Oil-gas Technology,Changqing Oilfield Company,PetroChina(Xi'an,Shaanxi 710018,China))

机构地区：[1]中国石油集团工程材料研究院有限公司,陕西西安710077 [2]石油管材及装备材料服役行为与结构安全国家重点实验室,陕西西安710077 [3]中国石油新疆油田分公司呼图壁储气库作业区,新疆呼图壁831200 [4]中国石油长庆油田分公司油气工艺研究院,陕西西安710018

出　　处：《石油工业技术监督》2023年第1期51-55,共5页Technology Supervision in Petroleum Industry

摘　　要：为确定水泥环约束下的在役套管抗挤强度,基于有限元分析方法,研究分析了水泥环对套管抗挤强度的影响。结果表明,在地层无移动或无蠕变位移情况下,水泥环对外压作用下套管的变形有约束效应,可提高套管外压挤毁压力,且随着水泥环与套管之间的间隙增加,水泥环的增强效应逐渐减小至零。的研究成果为合理利用套管的剩余强度、延长老井套管柱剩余寿命提供了技术支持。In order to determine the anti-squeeze strength of casing tube in service under the restriction of cement ring,the paper studies the influence of cement ring on anti-squeeze strength of casing tubes based on finite element analysis.The results show that under the condition of stratum that has no movement and no peristaltic shift,cement ring has restrictive effect on the deformation of casing tube under the action of external pressure,and can improve external pressure of casing tubes against crushing pressure;and then with the increase of gap between cement ring and casing tubes,the enhancement of cement ring can gradually reduce to zero.This study provides technical support for rationally utilizing residual intensity of tubes and extending residual life of old well casing tubes.

关 键 词：套管 水泥环 抗挤强度 有限元分析 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]