P110钢高温高压CO_2腐蚀行为研究  

Studied on the CO_2 corrosion behabior of P110 steel at high temprature and high pressure

作　　者：苗健[1] 白真权[1] 赵新伟[1] 

机构地区：[1]中国石油天然气集团公司石油管力学和环境行为重点实验室,陕西西安710065

出　　处：《石油矿场机械》2005年第6期50-52,共3页Oil Field Equipment

基　　金：国家973项目(G1999065004);国家自然科学重点项目(50231020);中国石油天然气集团公司管材研究所腐蚀与防护重点实验室开放基金;西安市科技计划项目(GG200350)

摘　　要：运用腐蚀失重、腐蚀表面成分分析和电化学测量技术,在模拟油田现场腐蚀环境中研究P110油管钢的高温高压腐蚀行为。研究结果表明,随着试验时间的延长,腐蚀速率逐渐降低。在试验时间达到72 h后,腐蚀速率降低的趋势变缓;阳极极化曲线上出现了类似于钝化的现象;阴极极化曲线的Tafel斜率变化较大,P110钢的阴极反应趋势已经不同。The corrosion behaviors of Pll0 steel at the stimulated environments of oil field have been systematically studied with mass loss , components analytical methods, electrochemical impedance spectroscopy （EIS） and polarization curves. The results show that the corrosion rate gradually reduces with the increase of experimental time. The tendency of corrosion reducing rate becomes very slow as 72 hours of experimental time passed. The phenomena similar to passivation for P110 steel will be taken place on the anodic polarization curves. When Tafel slopes of the cathodic polarization curves change greatly ,the tendency of cathodic reaction for P110 steel has been different.

关 键 词：P110钢 高温 高压 CO2腐蚀 极化曲线 

分 类 号：TE931.204[石油与天然气工程—石油机械设备]