摘要
通过模拟塔里木油田现场环境,利用高温高压实验设备辅以失重法,研究了油套管5Cr和普通P110用钢在H_2S分压为0.5MPa下的腐蚀速率;采用扫描电子显微镜(SEM)、能散X射线谱仪(EDS)和X射线衍射(XRD)技术对试样表面腐蚀产物的形貌和成分进行了分析。结果表明,5Cr和P110钢平均的腐蚀速率分别为0.1137mm/a和0.1917mm/a,两种材料的腐蚀产物的主要成分均为FeS,但5Cr腐蚀产物膜中出现了Cr的富集现象。探讨了H_2S腐蚀反应机理。
H_2S corrosion behavior of 5Cr and P110 steel was investigated in high temperature and pressure autoclave by simulating the downhole environment of Tarim oil field,and corrosion rate was measured by the weight loss method,The corrosion product scale was analyzed by using Scanning Electron Microscope (SEM),Energy Dispersive x ray Spectrometer (EDS) and X Ray Diffractometers(XRD).The results showed that the corrosion rate of 5Cr and P110 steel are 0.1137mm/a and 0.1917mm/a respectively.The corrosion scale of ...
出处
《内蒙古石油化工》
CAS
2008年第18期15-18,27,共5页
Inner Mongolia Petrochemical Industry
