[1]钱进森,陈长风,燕 铸,等.高温高压及醋酸环境中H2S对油管钢CO2腐蚀行为的影响[J].焊管,2011,34(10):9-15.[doi:1001-3938(2011)10-0009-07]
　QIAN Jin-sen,CHEN Chang-feng,YAN Zhu,et al.Effect of H2S on CO2 Corrosion of Oil Tube Steel in High Temperature and High Pressure Environments Containing Acetic Acid[J].,2011,34(10):9-15.[doi:1001-3938(2011)10-0009-07]
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高温高压及醋酸环境中H2S对油管钢CO2腐蚀行为的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
34
期数:
2011年第10期
页码:
9-15
栏目:
试验与研究
出版日期:
2011-10-28

文章信息/Info

Title:
Effect of H2S on CO2 Corrosion of Oil Tube Steel in High Temperature and High Pressure Environments Containing Acetic Acid
文章编号:
1001-3938(2011)10-0009-07
作者:
钱进森1; 陈长风1; 燕  铸2; 郑树启1; 翁永基1
（1.中国石油大学 材料科学与工程系，北京 102249；2.中国石油技术开发公司，北京 100029）
Author(s):
QIAN Jin-sen1;  CHEN Chang-feng1;  YAN Zhu2; ZHENG Shu-qi1;  WENG Yong-ji1
（1. Department of Material Science and Engineering， China University of Petroleum， Beijing 102249， China;
2. China Petroleum Technology & Development Corporation， Beijing 100029，China）
关键词:
油管钢; 高温高压; H2S/CO2腐蚀; 醋酸; 点蚀
Keywords:
oil tube steel;  high temperature and high pressure;  H2S/CO2 corrosion;  acetic acid;  pitting
分类号:
TG172.3
DOI:
1001-3938(2011)10-0009-07
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硫油气田H2S/CO2及醋酸共存环境，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，探讨了高温高压及醋酸环境中H2S对油管钢CO2腐蚀行为的影响。结果表明：普通N80油管钢在单一CO2腐蚀速率较高，达到5.1 mm/a，加入H2S后腐蚀速率明显受到抑制，降幅最大的点出现在H2S分压最小处，低至0.28 mm/a，随着H2S分压的继续增大，腐蚀速率略有增加，但远低于单一CO2腐蚀速率。加入H2S后腐蚀产物以四方晶系的FeS （Mackinawite）为主，未出现FeCO3，腐蚀过程转变为H2S控制。试样的腐蚀形态以局部腐蚀为主，试样表面均出现了严重的点蚀，醋酸的存在增大了油管钢在H2S/CO2环境中产生局部腐蚀的倾向性。
Abstract:
Solution immersion environments containing H2S/CO2 and acetic acid were simulated in a high temperature and high pressure autoclave manufactured by UAS Cortest Company， and test was conducted in flowing H2S/CO2 medium with high salinity. The Effect of H2S on CO2 corrosion of oil tube steel were analyzed and discussed by the following electrochemistry technologies， such as SEM， XRD， dynamic potential scanning， AC impedance and etc. The results showed that the corrosion rate of N80 oil tube steel is very high， up to 5.1mm/a， when solution immersion environment contain only CO2 and acetic acid. However， with the addition of H2S， the corrosion rate is restrained obviously and the largest decreasing point is observed at the lowest partial pressure of H2S， down to 0.28 mm/a. With H2S partial pressure increasing， the corrosion rate slightly increased， but is far lower than simplex CO2 corrosion rate. With the presence of H2S， the corrosion products are mainly FeS （Mackinawite）， FeCO3 doesn’t appear， and corrosion is controlled by H2S. The corrosion forms of samples are mainly localized corrosion， severe pitting presents on surface of samples， and exist of acetic acid promotes the tendency of pitting of oil tube steel in H2S/CO2 environment.

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备注/Memo

备注/Memo:
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