摘要
缓蚀剂是酸液中较为重要的一种添加剂,针对冻胶酸对油管、套管及井下金属设备的腐蚀,研究了一系列单一缓蚀剂的缓蚀效果,并通过复配得到高温复合型缓蚀剂—NKJ。静态腐蚀实验得到此复合型缓蚀剂在90℃、浓度为20%的盐酸的冻胶酸中的缓蚀率为98.0%,达到行业三级标准,高温高压动态实验得到该缓蚀剂平均腐蚀率为28.96g/(m2·h),达到行业一级标准。
The corrosion inhibitor is a very important additive in the acid fluid. Aiming at the corrosion of gelled acid to the tubing, casing and well equipment, the inhibiting effect of a series of single corrosion inhibitor have been studied, and a compound corrosion inhibitor NKJ used in high temperature has been developed. The result of the static corrosion experiment indicates that the inhibitor efficiency of the compound corrosion inhibitor is 98.0% in the gelled acid at 90℃ and the concentration of hydrochloric acid in the gelled acid is 20%, and it achieves the third level standard. The result of the dynamic experiment under high temperature and pressure indicates that the average corrosion rate of the corrosion inhibitor is 28.96 g/(m2·h), and it achieves the first level standard.
出处
《西南石油学院学报》
CAS
CSCD
北大核心
2006年第5期83-85,共3页
Journal of Southwest Petroleum Institute
关键词
缓蚀剂
冻胶酸
复合型
腐蚀速率
缓蚀率
gelled acid
compound corrosion inhibitor
corrosion rate
inhibitor efficiency
