CO_2驱注采井咪唑啉缓蚀剂吸附膜有效期研究
|
摘要
本文以高温高压反应釜为实验工具,探索了在高温高压CO_2腐蚀环境中,不同的CO_2分压及产液速度对咪唑啉缓蚀剂缓蚀率的影响规律。实验表明,在实际应用的压力范围内,咪唑啉缓蚀剂的缓蚀率基本不受CO_2分压的影响,咪唑啉缓蚀剂具有很好的耐压性;相同条件下,产液速度对咪唑啉缓蚀剂的缓蚀率有较大的影响,产液速度在20 m~3/d之内时,缓释率在90%以上,缓释效果非常好,但之后随着产液速度的增加,缓蚀剂的缓蚀率出现了大的下滑趋势,直到产液速度在40 m~3/d之后,缓蚀剂的缓蚀率趋于稳定。
In this paper,influence of different CO_2 partial pressure and liquid production rate on inhibition rate of imidazoline corrosion inhibitor was studied in high temperature and high pressure CO_2 corrosion environment by means of high temperature and high pressure reactor.The results show that the corrosion inhibition rate of imidazoline inhibitor is almost not affected by CO_2 partial pressure in the pressure range of practical application,and imidazoline inhibitor has good pressure resistance;under the same conditions,the rate of liquid production has a great effect on the inhibition rate of imidazoline inhibitor.When the liquid production rate is within 20 m~3/d,the slow-release rate is over 90% with good sustained-release effection.However,with the increase of liquid production rate,the corrosion inhibition rate of the inhibitor showed a large downward trend,until the liquid production rate of 40 m~3/d,the corrosion inhibition rate of the inhibitor tended to be stable.
In this paper,influence of different CO_2 partial pressure and liquid production rate on inhibition rate of imidazoline corrosion inhibitor was studied in high temperature and high pressure CO_2 corrosion environment by means of high temperature and high pressure reactor.The results show that the corrosion inhibition rate of imidazoline inhibitor is almost not affected by CO_2 partial pressure in the pressure range of practical application,and imidazoline inhibitor has good pressure resistance;under the same conditions,the rate of liquid production has a great effect on the inhibition rate of imidazoline inhibitor.When the liquid production rate is within 20 m~3/d,the slow-release rate is over 90% with good sustained-release effection.However,with the increase of liquid production rate,the corrosion inhibition rate of the inhibitor showed a large downward trend,until the liquid production rate of 40 m~3/d,the corrosion inhibition rate of the inhibitor tended to be stable.
引文
[1]李春福,王斌,张颖,等.油气田开发中CO2腐蚀研究进展[J].西南石油学院学报,2004,26(2):42-46.
[2]李晓伟,高延敏.CO2腐蚀的研究现状及其控制措施[J].腐蚀科学与防护技术,2009,21(6):553-555.
[3]刘晓玮,蔡庆伍,武会宾,等.CO2分压对X80管线钢腐蚀性能的影响[J].腐蚀与防护,2012,33(6):502-506.
[4]康永.咪唑啉类缓蚀剂腐蚀抑制作用[J].石油化工腐蚀与防护,2012,29(1).
[5]康永,罗红.咪唑啉类缓蚀剂对CO2/H2S腐蚀抑制作用研究进展[J].精细石油化工进展,2011,12(9).
[6]Hong T,Jepson W P.Corrosion inhibitor studies in large flow loop at high temperature and high pressure[J].Corrosion Science,2001,43(10):1839-1845.
[7]Lu Y,Liu H X,Zhao J M.Inhibition mechanism of imidazoline derivate in simulated water from deep gas well containing CO2[J].Electrochem,2007,13(3):243-249.
[2]李晓伟,高延敏.CO2腐蚀的研究现状及其控制措施[J].腐蚀科学与防护技术,2009,21(6):553-555.
[3]刘晓玮,蔡庆伍,武会宾,等.CO2分压对X80管线钢腐蚀性能的影响[J].腐蚀与防护,2012,33(6):502-506.
[4]康永.咪唑啉类缓蚀剂腐蚀抑制作用[J].石油化工腐蚀与防护,2012,29(1).
[5]康永,罗红.咪唑啉类缓蚀剂对CO2/H2S腐蚀抑制作用研究进展[J].精细石油化工进展,2011,12(9).
[6]Hong T,Jepson W P.Corrosion inhibitor studies in large flow loop at high temperature and high pressure[J].Corrosion Science,2001,43(10):1839-1845.
[7]Lu Y,Liu H X,Zhao J M.Inhibition mechanism of imidazoline derivate in simulated water from deep gas well containing CO2[J].Electrochem,2007,13(3):243-249.