摘要
针对高温碳酸岩储层（〉90℃）特点开发出一种新型生物酶与生酸前体复配的生物控释酸酸化体系,从分散配伍性、缓蚀性、控释性以及溶蚀性4个方面对控释酸体系的性能进行了评价。室内评价结果表明：该生物控释酸在模拟地层水中有很好的分散性、稳定性、配伍性;在20~110℃范围内均有较好的缓蚀效果;20%控释酸体系在90℃以上的高温反应4 h,产H＋浓度与10%HCl溶液相当;对碳酸钙粉末的溶蚀率可达96.3%,而且其溶蚀作用具有一定的持续性。
A novel bio-acidification system comprised by a newly enzymes and pre-acid fluid has been designed for high temperature carbonate reservoirs（90 ℃）.Its characteristics were evaluated in laboratory as follows,dispersion compatibility,corrosion inhibition ability,controlled-release ability and corrosion efficiency.The results showed that the bio-acidification system has well dispersion ability,great stability and compatibility in simulated formation water.Well corrosion inhibition effect was appeared over the temperature range of 20 to 110 degree.After reacting in above 90℃ for 4 hours,the hydrogen ion concentration releasing by 20% bio-acidification system equals to that in 10% HCl solution.The dissolution rate of the acidification system to CaCO3 particle can reach 96.3% with a lasting effect of corrosion.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2012年第2期92-95,共4页
Oil Drilling & Production Technology
基金
大连市高新技术产业园区科技创新项目(编号:20111099)
关键词
生物控释酸体系
生物酶
缓蚀
控释
碳酸岩
bio-acidification system
enzyme
corrosion inhibition ability
controlled-release
carbonate reservoirs
