腐蚀介质浓度对油井管材料的电化学腐蚀影响的研究
|
摘要
基于腐蚀电化学理论,以油井管材料为研究对象,在CS电化学工作站实验装置上,利用电化学方法,测试不同温度、不同Cl-浓度环境对油井管材料的电化学腐蚀。结果表明,Cl~-在较低浓度下促进了腐蚀,但在高浓度下抑制腐蚀,在浓度为3.5%的NaCl溶液中,腐蚀效果最明显。P110钢在同一种氯离子浓度下,随着温度的增加腐蚀速率也逐渐增大,可见温度促进P110钢的腐蚀,温度越高腐蚀速率越快。
Based on the electrochemical theory of corrosion,the electrochemical corrosion of oil well pipe material was studied by electrochemical method at different temperature and different concentrations of Cl-environment on the CS electrochemical workstation experimental device.The results showed that the corrosion was promoted at low chloride concentration,but the corrosion was inhibited at high chloride concentration.The corrosion effect was the most obvious in Na Cl solution with concentration of 3.5%.P110 steel was the same.With the chloride ion concentration increased,the corrosion rate was also increased,showed temperature was promoted the corrosion of P110 steel,the higher the temperature,the faster the corrosion rate.
Based on the electrochemical theory of corrosion,the electrochemical corrosion of oil well pipe material was studied by electrochemical method at different temperature and different concentrations of Cl-environment on the CS electrochemical workstation experimental device.The results showed that the corrosion was promoted at low chloride concentration,but the corrosion was inhibited at high chloride concentration.The corrosion effect was the most obvious in Na Cl solution with concentration of 3.5%.P110 steel was the same.With the chloride ion concentration increased,the corrosion rate was also increased,showed temperature was promoted the corrosion of P110 steel,the higher the temperature,the faster the corrosion rate.
引文
[1]刘小燕.油井管材料流体诱导腐蚀研究[D].西安:西安石油大学,2013.
[2]王倩,马云,屈撑囤,刘谊君.油气田水系统钢材腐蚀的电化学研究进展[J].油田化学,2013(3):471-476.
[3]朱世东,白真权,尹成先,等.P110钢抗冲刷腐蚀行为研究[J].材料工程,2009(8):28-32.
[4]徐哲.液固两相流条件下P110钢冲刷腐蚀研究[D].大庆:东北石油大学,2011.
[5]刘会,赵国仙,韩勇,等.Cl-对油套管用P110钢腐蚀速率的影响[J].石油矿场机械,2008,37(11):44-48.
[6]闫康平,陈匡民.过程装备腐蚀与防护[M].北京:化学工业出版社,2009.
[7]张旭昀,朱闯,孙丽丽,等.沙粒和氯离子对P110钢冲刷与腐蚀性能的影响[J].化工机械,2012(4):447-451.
[2]王倩,马云,屈撑囤,刘谊君.油气田水系统钢材腐蚀的电化学研究进展[J].油田化学,2013(3):471-476.
[3]朱世东,白真权,尹成先,等.P110钢抗冲刷腐蚀行为研究[J].材料工程,2009(8):28-32.
[4]徐哲.液固两相流条件下P110钢冲刷腐蚀研究[D].大庆:东北石油大学,2011.
[5]刘会,赵国仙,韩勇,等.Cl-对油套管用P110钢腐蚀速率的影响[J].石油矿场机械,2008,37(11):44-48.
[6]闫康平,陈匡民.过程装备腐蚀与防护[M].北京:化学工业出版社,2009.
[7]张旭昀,朱闯,孙丽丽,等.沙粒和氯离子对P110钢冲刷与腐蚀性能的影响[J].化工机械,2012(4):447-451.