塔河油田某伴生气管线螺旋焊缝失效原因分析  

Failure Analysis of Spiral Weld of an Associated Gas Pipeline in Tahe Oilfield

作　　者：闻小虎[1,2] 石鑫 张丽[3] 王毛毛[3] 魏晓静 陈迎锋 刘冬梅[1,2] WEN Xiao-hu;SHI Xin;ZHANG Li;WANG Mao-mao;WEI Xiao-jingb;CHEN Ying-feng;LIU Dong-mei(Northwest Company of China Petroleum and Chemical Corporation,SINOPEC,Urumqi 830011,China;Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-Vuggy Reservoirs,CNPC,Urumqi 830011,China;Anke Engineering Technology Research Institute(Beijing)Co.,Ltd.,Beijing 102209,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830011 [2]中国石油化工集团公司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830011 [3]安科工程技术研究院(北京)有限公司,北京102209

出　　处：《材料保护》2022年第2期189-194,共6页Materials Protection

摘　　要：由于伴生气的存在,塔河油田某管线螺旋焊缝开裂。为了阐明管道螺旋焊缝的失效原因,为今后的管道腐蚀控制工作提供指导,分别对伴生气管道螺旋焊缝开裂处、远离焊缝处、缺陷两端材料表面进行宏观形貌观察,通过荧光光谱仪对材料成分进行分析,使用扫描电镜和X射线能谱观察及分析了开裂处的微观形貌及所含元素,并对伴生气管线螺旋焊缝开裂原因进行了分析。结果表明:伴生气管线的破裂是管线内伴生气中高含量的H_(2)S所引起的氢致开裂(HIC)和硫化物应力腐蚀开裂(SSCC)共同作用的结果。破口的中部(即最宽处)是开裂的始点。Due to the existence of the associated gas,the spiral weld of a pipeline in Tahe Oilfield was cracked.In order to clarify the failure reason of spiral weld of the pipeline and provide effective guidance for future pipeline corrosion control,the macro morphology of the cracked part of the spiral weld of the associated gas pipeline,the part far away from the weld and the material surface at both ends of the defect were observed,respectively.The composition of material was analyzed by fluorescence spectrometer.The micro morphology and element components of the cracked part were observed and analyzed by scanning electron microscope and X-ray energy dispersive spectrum,and the cracking reason of the spiral weld of the associated gas pipeline were analyzed.Results showed that the fracture of the associated gas pipeline was the result of hydrogen induced cracking(HIC)and sulfide stress corrosion cracking(SSCC)caused by high content of H_(2)S in the associated gas in the pipeline.The middle of the fissure(i.e.the widest part)was the starting point of the crack.

关 键 词：伴生气 螺旋焊缝 失效 裂纹 

分 类 号：TE973[石油与天然气工程—石油机械设备]