摘要
文中采用高温高压反应釜借助腐蚀挂片失重法测试了油田常用咪唑啉类和炔氧甲基季铵盐型两种不同类型的缓蚀剂在饱和CO2油田采出液对N80钢的缓蚀行为,分析了缓蚀剂的溶解、分散性,采用扫描电镜对腐蚀后表面形貌进行了观察。研究结果表明:在两种缓蚀剂中,炔氧甲基季铵盐型缓蚀剂溶解性高于咪唑啉型,而炔氧甲基季铵盐IMC-871GH1型缓蚀剂可以集优异溶解和分散性于一体。腐蚀形貌测试结果反映出缓蚀剂在材料表面均匀覆盖程度直接影响材料点蚀行为,添加炔氧甲基季铵盐型缓蚀剂试样表面致密度高于咪唑啉型缓蚀剂,点蚀倾向小。
The inhibition performances of imidazoline and oxygen acetylene methyl amine of two different inhibitors for N80steel in the oilfield-produced solutions containing saturated CO2is investigated at a high temperature and a high pressure with weight loss methods. The solubility and decentrality are also analyzed. The corrosion morphology is tested under a scanning electronic microscope. The results show that the solubility of oxygen acetylene methyl amine is higher,and IMC- 871GH1 exhibits the optimal solubility and decentrality. The pitting of materials is influenced by the uniform coverage surface of the inhibition. The surface density of oxygen acetylene methyl amine is higher than that of imidazoline.
出处
《管道技术与设备》
CAS
2013年第6期30-32,共3页
Pipeline Technique and Equipment
基金
国家科技重大专项十二五规划课题(2011ZX05016-003)
关键词
N80
CO2腐蚀
缓蚀剂
高温高压
N80
CO2corrosion
inhibition high temperature high pressure
