Abstract:

A new corrosion inhibitor BW-3 has been prepared by using water-soluble quaternary ammonium salt,hydrolytic polymaleic anhydride,polyethylene succinate,polyaspartic acid as raw materials. BW-3 has excellent anti-scaling performance and good corrosion effect. Anti-scaling performance and corrosion performance of BW-3 are significantly better than the corrosion inhibitors which have frequently used by oilfields. Electrochemical test results show that the corrosion mechanism of BW-3 is a “negative catalytic effect” and a mixed type of corrosion inhibitor which mainly inhibit cathode reaction. The inhibiting mechanism of CaCO₃ scale by BW-3 is,mainly lattice distortion function.

Key words: corrosion and scale inhibitors, water-soluble quaternary ammonium salt, polyethylene succinate, polyaspartic acid

摘要：

以水溶性季铵盐、水解聚马来酸酐、聚环氧琥珀酸钠、聚天冬氨酸为原料，复配了一种新型缓蚀阻垢剂BW-3。BW-3具有优异的阻垢性能和良好的缓蚀效果。在所测浓度范围内，BW-3的阻垢和缓蚀效果均明显优于油田常用缓蚀阻垢剂|电化学试验结果表明，BW-3的缓蚀机理属于"负催化效应"，是一种以抑制阴极反应过程为主的混合型缓蚀剂。BW-3对CaCO₃垢的阻垢机理主要是晶格畸变作用。

关键词: 缓蚀阻垢剂, 水溶性季铵盐, 聚环氧琥珀酸钠, 聚天冬氨酸

CLC Number: 

• TE39