作　　者： ; ; ; ; ;

机构地区： 中国石油大学华东物理科学与技术学院

出　　处： 《青岛大学学报（工程技术版）》 2009年第2期90-93,98,共5页

摘　　要： 为了研究CO2分压对碳钢腐蚀的影响及缓蚀剂的缓蚀性能,在模拟油田腐蚀环境中,采用FS-Ⅲ高温高压动态腐蚀仪,辅以失重法计算,对不同CO2分压下油管钢N80的动态腐蚀速率,A(1-硫脲乙基-2-烷基咪唑啉)和B(1-氨乙基-2-烷基咪唑啉季铵盐)两种咪唑啉缓蚀剂对CO2腐蚀的缓蚀效果及与其它油田用化学药剂的配伍性进行了研究。结果表明,在实验温度条件下,随着CO2分压的升高,N80钢的动态腐蚀速率呈现先增大后减小的变化趋势;缓蚀剂A和B对CO2腐蚀都有很好的抑制效果,最佳缓蚀效率分别为95%和94.6%,其中A与其它化学药剂具有很好的配伍性。使用缓蚀剂A对油田CO2腐蚀进行防护会有很好的效果。 The effects of partial pressure of CO2 on corrosion behaviours of tubing steel N80 in simulated corrosion environment of oilfield, corrosion inhibitors dosage on the inhibition efficiency, and the compati- bility between corrosion inhibitors and other oilfield chemicals are studied by weight loss method. The re- sults show that the corrosion rates increase at first and then decrease with increasing of CO2 partial pres- sure; corrosion inhibitors A and B exhibit excellent performance in controlling CO2 corrosion （the maxi- mum inhibition efficiencies are up to 95.0% and 94. 7% respectively） ; A has an excellent compatibility with other oilfield chemicals; and analysed the inhibition mechanism. These provide a good technical guid- ance for inhibitors application.

关 键 词： 腐蚀 腐蚀速率 缓蚀剂 配伍性

领　　域： [金属学及工艺] [金属学及工艺]