模拟CO2驱环境中咪唑啉类缓蚀剂对J55钢腐蚀性能的影响
Effect of Imidazoline Inhibitors on Corrosion Performance of J55 Steel in Simulated CO2 Flooding Environment
摘 要
采用极化曲线和电化学阻抗谱方法研究了模拟CO2驱环境中两种咪唑啉类缓蚀剂对J55钢的缓蚀性能。利用拟合得到了电化学腐蚀的热动力学参数并对其进行了分析, 同时计算了两种缓蚀剂对J55钢的缓蚀效率。结果表明, 腐蚀电流密度(Jcorr)均随缓蚀剂用量提高而不断减小, 缓蚀剂作用下的电荷传递电阻Rt均远远大于空白试验条件下的Rt值, 改性咪唑啉缓蚀剂比咪唑啉缓蚀剂对CO2腐蚀具有更好的缓蚀效果。
CO2腐蚀
咪唑啉类缓蚀剂
缓蚀效率
J55 steel
CO2 corrosion
imidazoline inhibitor
inhibition efficiency
Abstract
The effect of inhibitors on the performance of J55 steel in simulated CO2 flooding environment added two kinds of imidazoline inhibitors was investigated by means of polarization curves and electrochemical impedance spectroscopy(EIS). The parameters of thermal dynamics of electrochemical corrosion were fitted and analyzed, and the inhibition efficiencies were also calculated. The results indicated that the corrosion current density decreased with increasing the contents of inhibitors. Due to the effect of inhibitors, the charge transfer resistance was greater than that under the blank condition. In addition, modified imidazoline inhibitor has better inhibition performance than imidazoline inhibitor for CO2 corrosion.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 陕西延长石油(集团)有限责任公司研究院青年基金(YJY2012-QNJJ-07)
收稿日期 2013/1/11
修改稿日期
网络出版日期
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备注尹志福,博士,
引用该论文: YIN Zhi-fu,LI Hui,LIU Li,MA Bin,WANG Ke. Effect of Imidazoline Inhibitors on Corrosion Performance of J55 Steel in Simulated CO2 Flooding Environment[J]. Corrosion & Protection, 2013, 34(6): 489
被引情况:
【1】张永刚,罗懿,刘学全,熊佩,魏开鹏,斯容, "红河油田CO2/泡沫驱缓蚀剂研究与应用",腐蚀与防护 35, 899-902(2014)
【2】王珂,张永强,尹志福,吕雷,朱世东, "N80和3Cr油管钢在CO2驱油环境中的腐蚀行为",腐蚀与防护 36, 706-710(2015)
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