玻璃钢集油管道泄漏原因  

Leakage Causes of Glass Fiber Reinforced Plastic Oil Gathering Pipeline

作　　者：陈庆国 李磊 燕自峰 齐国权 王鹏[1] 朱丽霞 CHEN Qingguo;LI Lei;YAN Zifeng;QI Guoquan;WANG Peng;ZHU Lixia(Oil and Gas Engineering Research Institute of PetroChina Tarim Oilfield Company,Korla 841000,China;State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi’an 710077,China)

机构地区：[1]中国石油塔里木油田公司油气工程研究院,库尔勒841000 [2]中国石油集团石油管工程技术研究院,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,西安710077

出　　处：《理化检验（物理分册）》2021年第12期75-79,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某油田玻璃钢集油管道发生泄漏失效。通过宏观观察、尺寸测量、玻璃化转变温度测试、树脂含量测试及微观分析等方法,对管道泄漏失效的原因进行了分析。结果表明:在弯曲应力或以弯曲应力为主的复合载荷作用下,管道接头应力集中处(外螺纹根部位置)所受应力超过材料能承受的极限应力而发生横向断裂造成泄漏,此应力主要来源于地层沉降和其他外力。The glass fiber reinforced plastic oil gathering pipeline in an oil field failed due to leakage.The causes of pipeline leakage failure were analyzed by means of macro observation,size measurement,glass transition temperature test,resin content test and micro analysis.The results show that under the action of bending stress or composite load dominated by bending stress,the stress at the stress concentration of the joint(at the root of external thread)exceeded the ultimate stress that the material can bear and transverse fracture occurred.This stress mainly came from stratum settlement and other external forces.

关 键 词：玻璃钢管 横向断裂 弯曲应力 地层沉降 失效 

分 类 号：TG115.2[金属学及工艺—物理冶金]