海上油田P110双公短节断裂失效分析  

Failure Analysis of P110 Double Male Subjoint Fracture in Offshore Oilfield

作　　者：万芬 辛野 刘志龙 孙艳萍 冯佳琦 和一帆 Wan Fen;Xin Ye;Liu Zhilong;Sun Yanping;Feng Jiaqi;He Yifan(CNOOC EnerTech-Drilling&Production Co.,Ltd.,Tianjin 300452,China;CNOOC Changzhou Paint and Coatings Industry Research Institute Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海油常州涂料化工研究院有限公司,天津300452

出　　处：《涂层与防护》2024年第5期15-19,25,共6页Coating and Protection

摘　　要：某海上油田井下P110双公短节发生断裂失效,对断口和焊缝等部位进行宏观与微观实验测试分析,根据断口形貌和金相分析结果,判断双公短节内壁断裂是韧性断裂失效并且焊接产生了有害组织,进一步判断失效原因为蠕变断裂,最后提出相关建议。In an offshore oilfield,the fracture failure occurred in P110 double male subjoint,and the macro and micro experimental analysis was carried out on the fracture and weld,etc.The fracture morphology and metallographic analysis results revealed that the inner wall fracture of the double male subjoint was judged to be ductile fracture failure and harmful microstructure was generated by welding.The failure cause was further judged to be creep fracture and finally relevant suggestions were put forward.

关 键 词：双公短节 形貌分析 失效分析 蠕变断裂 

分 类 号：TQ630.72[化学工程—精细化工]