摘要
采用含乙酸、饱和二氧化碳和碳酸氢钠的水溶液模拟我国西部油气田采出水;通过浸泡试验、电化学试验、扫描电镜(SEM)和X射线衍射仪(XRD)研究了L245钢在乙酸含量不同的模拟油田采出水中的腐蚀行为。结果表明:50℃下,乙酸的加入对腐蚀的阴极反应有促进作用,当乙酸含量增加到一定程度时,试样表面的腐蚀产物膜溶解,生成易溶于水的乙酸铁盐。
The produced water of oil well in west China was simulated by aqueous solution containing sodium bicarbonate,acetic acid and saturated carbon dioxide.By means of corrosion immersion testing,electrochemical testing,scanning electron microscopy(SEM)and X-ray diffraction(XRD),the corrosion behavior of L245 steel in the simulated produced water with different acetic acid concentrations were studied.The results show that at 50℃,the addition of acetic acid promoted the cathodic reaction of corrosion.When the concentration of acetic acid increased to a certain extent,the corrosion product film dissolved on the surface of the sample to form acetic acid salt soluble in water.
作者
曹卜元
朱明
李俊谊
荣欢
张慧慧
CAO Boyuan;ZHU Ming;LI Junyi;RONG Huan;ZHANG Huihui(School of Material Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China)
出处
《腐蚀与防护》
CAS
北大核心
2019年第4期271-275,280,共6页
Corrosion & Protection
基金
西安科技大学博士启动基金(2015QDJ013)
陕西省教育厅专项科研计划(15JK1489)
关键词
L245钢
乙酸
腐蚀速率
腐蚀产物
L245 steel
acetic acid
corrosion rate
corrosion product
