塔河油田某生产井油管腐蚀失效分析  

Analysis of Corrosion Failure of Oil Tubing in A Production Well in Tahe Oilfield

作　　者：罗辉[1] 桂晶 王毛毛 李金许[3] LUO Hui;GUl Jing;WANG Maomao;LI Jinxu(Northwest Oilfeld Branch,SINOPEC,Urumgi 830011,China;Safetech Research Institute,Beijing 102209,China;University of Science and Technology Beijing,Beijing 100083,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]安科工程技术研究院(北京)有限公司,北京102209 [3]北京科技大学,北京100083

出　　处：《化工管理》2024年第27期138-141,共4页Chemical Management

摘　　要：塔河油田某生产井在检管时发现油管外壁存在明显的局部腐蚀,腐蚀形貌包括圆坑状局部腐蚀与沟槽状局部腐蚀。通过对油管开展基础性能测试、腐蚀产物表征、腐蚀产物细菌培养与基因测序,明确了油管外壁腐蚀原因为细菌腐蚀及闭塞电池造成自催化酸化作用。因此,建议缩短现场用环空保护液的放置周期,并定期对环空保护液的细菌含量与氧含量进行测试。It was found that there was obvious localized corosion on the outer wall of the production well oil tubing of Tahe oilfield during fubing inspection,and the corrosion morhology included round pit-like localized corosion and groove-like localized corosion.With the basic performance testing,corrosion product characterization,corrosion product bacterial culture and gene sequencing on oil tubing,the cause of corrosion on the outer wall of the oil tubing was clarifed as bacterial coosion and autocatalytic acidification caused by occlusion cells,It is recommended to shorten the placement period of the annular protective fuid for ficld use and to test the bacterial and oxygen content of the annular protcctive fuid periodically.

关 键 词：生产井 油管 细菌腐蚀 失效分析 

分 类 号：TE983[石油与天然气工程—石油机械设备]