摘要
腐蚀是影响管道完整性和可靠性的重要因素,目前中国的在役油气管道在投产1~2年后普遍会发生不同程度的腐蚀穿孔现象,造成油、气泄漏。针对该问题,有计划地开展在役油气管道的外腐蚀检测评价显得尤为重要。通过对直流电位梯度法(DCVG)、交流电位梯度法(ACVG)、皮尔逊法(Pearson)、多频管中电流法(PCM)、密间隔电位测量法(CIPS)等检测技术进行梳理和比较,并对间接检测结果进行了分级,检测结果可以为下一步直接检测、开挖验证提供数据指导,为管理者提供科学、系统的防腐系统数据。
Corrosion is an important factor affecting the integrity and reliability of pipelines.At present,the oil and gas pipelines in China have different degrees of corrosion and perforation site after serving for 1 2 years in production,and resulting in oil and gas leakage.In view of the problem,it is particularly important to carry out the external corrosion inspection and evaluation of oil and gas pipelines in service in a planned way.By sorting out and comparing direct current voltage gradient(DCVG),Alternating Current voltage gradient (ACVG),Pearson method,pipeline current mapper (PCM),close interval pipeline survey(CIPS) and other detection technologies,the indirect detection results are classified.The detection results can provide data guidance for next direct detection and excavation verification.It provides scientific and systematic anti-corrosion system data for superintendent.
作者
凌建磊
李涛
何晓
王端亮
张志刚
Ling Jianlei;Li Tao;He Xiao;Wang Duanliang;Zhang Zhigang(China Petroleum Pipeline Engineering Co.Ltd.,Langfang,065001,China;No.3 Exploitation Factory of Huabei Oilfield Company,Hejian,062450,China;No.3 Oil Production Plant,Dagang Oilfield Branch,CNPC,Cangzhou,061023,China;Maintenance and Emergency Repair Company of China Petroleum Pipeline Engineering Co.Ltd.,Langfang,065001,China;No.4 Branch Company of China Petroleum Pipeline Engineering Co.Ltd.,Langfang,065000,China)
出处
《石油化工自动化》
CAS
2019年第4期65-67,共3页
Automation in Petro-chemical Industry
关键词
外腐蚀检测
直流电位梯度法
交流电位梯度法
皮尔逊法
多频管中电流法
密间隔电位测量法
external corrosion inspection
direct current voltage gradient
alternating current voltage gradient
Pearson
pipeline current mapper
close interval pipeline survey
