|
霍富永１，雷俊杰２，魏爱军１，党晓丽１
（１.西安石油大学石油工程学院，陕西西安 710065；２.延长油田股份有限公司吴起采油一厂，陕西延安 717600）
摘要：采用失重法，测定了两种油田常用缓蚀剂（HJF-94和WSL-1）对浸没于含CO2的模拟油田采出水的A3钢的缓蚀作用，并计算腐蚀速率和缓蚀率。实验结果表明：HJF-94缓蚀剂在较低质量分数范围（0~0.1%）有较好的缓蚀效果，在较高质量分数范围（2%~3.5%）的缓蚀率均高于90%；WSL-1缓蚀剂在较高质量分数（1.5%~3%）时缓蚀率均为99%以上；添加了缓蚀剂的金属表面腐蚀轻微，表面光滑，且不存在明显的点蚀倾向。
关键词：CO2腐蚀；缓蚀剂；缓蚀率；失重法
Evaluation of the Commonly Used Oilfield Corrosion Inhibitors
HUO Fu-yong 1, LEI Jun-jie 2, WEI Ai-jun 1, DANG Xiao-li 1
(1.School of Petroleum Enginering,Xi’an Shiyou University, Xi’an 710065,China;WuQi No.1 Oil Production Plant, Yanchang Petroleum Company Limited, Yan’an 717600,China)
Abstract: The character and inhibitive efficiency of the two commonly used oil field corrosion inhibitors (HJF-94 and WSL-1) on the A3 steel immersed in simulated extracted water of the oil field in which carbon dioxide dissolves ware tested respectively with a weight-loss method, and the rate of corrosion and the inhibitive efficiency was determined. The experiments indicate that the corrosion inhibitor HJF-94 performs good effects at a lower concentration (0~0.1%) and the inhibitive efficiencies are all over 90% at a higher concentration (2%~3.5%).The inhibitive efficiency of WSL-1 are all over 99% at a higher concentration (1.5%~3%).The corrosion on the surface of A3 steel in a corrosion medium with the inhibitor is slight, the surface of the metal smooth, and no pitting corrosion occurs.
Key words: carbon dioxide corrosion; corrosion inhibitor; inhibitive efficiency; weight-loss method |
