某内穿插HDPE修复集油管线爆裂失效分析  

Burst Failure Analysis of Interpolated HDPE Repairing Oil-gathering Pipeline

作　　者：肖雯雯[1,2] 王震 刘冀宁[1,2] 张菁[1,2] 龚秋红 XIAO Wenwen;WANG Zhen;LIU Jining;ZHANG Jing;GONG Qiuhong(SINOPEC Northwest Oilfield Company,Urumqi 830000,China;SINOPEC Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured Vuggy Reserviors,Urumqi 830000,China;SINOPEC Petroleum Engineering Jianghan Co.,Ltd.,Korla 841000,China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司,新疆乌鲁木齐830000 [2]碳酸盐岩缝洞型油藏提高采收率重点实验室,新疆乌鲁木齐830000 [3]中国石化江汉石油工程设计有限公司新疆分公司,新疆库尔勒841000

出　　处：《热加工工艺》2023年第8期162-165,共4页Hot Working Technology

基　　金：中石化西北局科研项目(kj201802)。

摘　　要：针对某内穿插HDPE修复集油管线在扫线打压作业过程中发生爆裂失效的现象,通过宏观分析、理化性能测试、扫描电镜、X射线能谱及X射线衍射等手段,研究了该管段失效的原因。结果表明,该管材化学成分、金相组织、屈服强度和拉伸强度均符合标准要求,但因为服役老化,引起塑性明显低于标准材料。尽管进行了内穿插HDPE修复,管道的内外腐蚀造成管壁明显减薄,承压极限仅为5.3 MPa,扫线打压过程中因下游堵塞,造成了爆裂失效。In view of the burst failure of an interpolated HDPE repairing oil-gathering pipeline during the line sweeping and suppressing operation,the reasons for the failure of the pipe were systematically studied by macro analysis,physical and chemical performance testing,scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and X-ray diffraction(XRD).The results show that the chemical composition,metallographic structure,yield strength and tensile strength of the pipe meet the standard requirements,but due to service aging,the plasticity is significantly lower than that of the standard material.In spite of the internal HDPE repair,the internal and external corrosion of the pipeline cause the pipe wall to be significantly thinned,and the pressure limit is only 5.3 MPa,then the downstream blockage leads to burst failure during the line sweeping and pressure process.

关 键 词：集油管线 内穿插HDPE修复 腐蚀 失效分析 

分 类 号：TG17[金属学及工艺—金属表面处理]