[1]燕 铸,钱进森,李振东,等.油管钢在高温高压H2S/CO2环境中的二次腐蚀行为研究[J].焊管,2014,37(10):20-25.[doi:１００１－３９３８（２０１4）10-0020-06]
　YAN Zhu,QIAN Jinsen,LI Zhendong,et al.Research on Second Corrosion Behavior of Oil Tube Steel in HighTemperature and High Pressure Environments Containing H2S/CO2[J].,2014,37(10):20-25.[doi:１００１－３９３８（２０１4）10-0020-06]
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油管钢在高温高压H2S/CO2环境中的二次腐蚀行为研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
37
期数:
2014年第10期
页码:
20-25
栏目:
试验与研究
出版日期:
2014-10-28

文章信息/Info

Title:
Research on Second Corrosion Behavior of Oil Tube Steel in High
Temperature and High Pressure Environments Containing H2S/CO2
文章编号:
１００１－３９３８（２０１4）10-0020-06
作者:
燕 铸; 钱进森; 李振东; 刘建彬; 李小波
（中国石油技术开发公司，北京 100028）
Author(s):
YAN Zhu; QIAN Jinsen;  LI Zhendong; LIU Jianbin;  LI Xiaobo
（China Petroleum Technology & Development Corporation，Beijing 100028，China）
关键词:
油管钢; 高温高压; H2S/CO2腐蚀; 二次腐蚀; 点蚀
Keywords:
oil tube steel; high temperature and high pressure; H2S/CO2 corrosion; second corrosion; pitting
分类号:
TG172.3
DOI:
１００１－３９３８（２０１4）10-0020-06
文献标志码:
A
摘要:
利用美国CORTEST公司高温高压反应釜模拟高含S油气田H2S/CO2腐蚀环境，在流动高矿化度饱和H2S/CO2介质中进行试验，辅以SEM、XRD、动电位扫描及交流阻抗等表面分析和电化学技术，探讨了油管钢在高温高压H2S/CO2环境中的二次腐蚀行为。结果表明，普通N80油管钢单一CO2腐蚀速率较高，为1.89 mm/a；先CO2腐蚀后H2S腐蚀，腐蚀速率减小为1.38 mm/a，材料的腐蚀类型表现出严重的局部腐蚀，先生成的FeCO3膜转变为FeS膜，转变过程中腐蚀产物膜的晶格发生畸变，导致腐蚀产物膜分层、疏松且容易脱落；先H2S腐蚀后再CO2腐蚀，腐蚀速率明显减小至0.27 mm/a，腐蚀产物膜未发生转变，通过腐蚀产物膜电化学测试分析，FeCO3膜对基体的保护性差，而FeS膜对基体的保护性相对较好
Abstract:
H2S/CO2 corrosion environments in oil and gas field containing rich S were simulated in a high temperature and high pressure autoclave manufactured by USA Cortest Company，and tests were conducted in flowing medium with high salinity. Second corrosion behavior of oil tube steel in high temperature and high pressure H2S/CO2 corrosion environments was analyzed and discussed by the following technologies，such as SEM，XRD，dynamic potential scanning，AC impedance and electrochemical techniques. The results showed that corrosion rate of N80 oil tube steel was very high，up to 1.89 mm/a.when solution immersion environment contain only CO2 . If H2 S corrosion was conducted after CO2  corrosion, the corrosion rate reduced to 1.38 mm/a. The corrosion type showed distinct characteristic of local corrosion. FeCO3 corrosion film formed firstly would be transformed to FeS film，in this process，aberration of crystal lattice happened，which would result in delamination and loosen of film. If CO2  corrosion was conducted after  H2 S corrosion, the corrosion rate decreased a lot，up to 0.27 mm/a，FeS film formed firstly would not transformed. Through electrochemical test and analysis，the corrosion product film FeS has a good protect to substrate，while FeCO3 film is poor.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2014－7－30
作者简介：燕铸（1977—），男，博士，主要从事管线管及油套管领域的研究管理工作。
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