焊管2024，Vol.47Issue(8)：24-29,6.DOI:10.19291/j.cnki.1001-3938.2024.08.004
温度对X65管线钢在含CO2/H2S油田模拟环境中腐蚀行为的影响
Effect of Temperature on Corrosion Behavior of X65 Pipeline Steel in Simulated Environments Containing CO2/H2S in Oil Fields
摘要
Abstract
In order to study effect of temperature on corrosion of X65 pipeline steel in CO2/H2S environment,the corrosion behavior of X65 pipeline steel at different temperatures was analyzed through high-temperature and high-pressure simulated environmental corrosion and electrochemical tests.Results indicate that with the increase of temperature,the uniform corrosion rate shows a trend of first increasing and then decreasing.When the temperature reaches at 80℃,the uniform corrosion rate reaches its maximum value of 0.4345 mm/a.The surface corrosion products of the sample are relatively rough,generating the corrosion products FeCO3 and FeS.As the temperature increases,the corrosion of X65 pipeline steel gradually becomes dominated by H2S corrosion,and the corrosion current density first increases and then decreases,which is consistent with the results of the weight loss corrosion test.The capacitance arc of X65 pipeline steel shows a time constant and the radius gradually decreases.At the experimental temperature,CaCO3 was generated on the surface of the sample,which may be related to the high Ca2+content in the solution.关键词
X65管线钢/H2S腐蚀/均匀腐蚀速率/腐蚀产物Key words
X65 pipeline steel/H2S corrosion/uniform corrosion rate/corrosion products分类
能源科技引用本文复制引用
秦立峰,吴绍伟,程利民,宋洋,袁梦瑶,张思琦,杨雪,胡楠..温度对X65管线钢在含CO2/H2S油田模拟环境中腐蚀行为的影响[J].焊管,2024,47(8):24-29,6.基金项目
中国海洋石油集团有限公司重大科技项目"南海西部油田上产2000万方关键技术研究"课题1"南海西部在生产油气田提高采收率技术研究"(项目编号CNOOC-KJ135ZDXM38ZJ01ZJ). （项目编号CNOOC-KJ135ZDXM38ZJ01ZJ）
