某海上油田地面管线腐蚀失效的原因  

Corrosion-Induced Failure Reason of Surface Pipelines in a Specific Offshore Oilfield

作　　者：张玉楠 杨映华 逄建鑫 焦冯成 朱金阳 ZHANG Yunan;YANG Yinghua;PANG Jianxin;JIAO Fengcheng;ZHU Jinyang(National Science Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China;Shelfoil Petroleum Equipment&Services Co.,Ltd.,Dezhou 253000,China;Qingdao Municipal Bureau of Administrative Services,Qingdao 266499,China)

机构地区：[1]北京科技大学国家材料服役安全科学中心,北京100083 [2]德州大陆架石油工程技术有限公司,德州253000 [3]青岛西海岸新区行政审批服务局,青岛266499

出　　处：《腐蚀与防护》2025年第4期115-121,共7页Corrosion & Protection

摘　　要：针对某海上油田地面管线服役仅3 a即发生腐蚀穿孔失效的问题,通过对失效管道的材质、输送介质组分、微生物含量,以及服役环境中的温度、压力和流速等参数进行分析,结合失效管段的宏微观形貌和腐蚀产物成分分析,确定了管道的腐蚀失效原因。结果表明,CO_(2)腐蚀是管线失效的主要原因,氯离子的存在进一步加剧了局部腐蚀,最终导致管道穿孔。研究结果为类似管道的腐蚀失效分析提供了理论依据,并提出了针对性的防护建议。In response to the issue of corrosion-induced perforation failure occurring in a subsea oilfield pipeline after only 3 years of service,the failure causes were determined by analyzing the pipeline material,composition of the transported medium,microbial content,as well as environmental parameters such as temperature,pressure,and flow rate.The analysis was combined with the macro-and micro-morphology of the failed pipe section and the composition of corrosion products.The results indicate that CO_(2) corrosion was the primary cause of the pipeline failure,and the presence of chloride ions further exacerbated localized corrosion,ultimately leading to pipeline perforation.The findings provide a theoretical basis for analyzing corrosion failures in similar pipelines and offer targeted recommendations for preventing such failures.

关 键 词：失效分析 地面管线 CO_(2)腐蚀 氯离子 局部腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]