抗高温乳化酸酸化技术的研究与应用  

The Studies and Application of Acidification Technology of High Temperature Emulsified Acids.

作　　者：张谦[1] 陈大钧[1] 熊颖[1] 吴文刚[1] 

机构地区：[1]西南石油大学化学化工学院

出　　处：《钻井液与完井液》2008年第2期51-53,共3页Drilling Fluid & Completion Fluid

摘　　要：乳化酸作为一种缓蚀酸,可降低酸岩反应速率,从而可完成更深部位的酸化,极大提高地层的油气渗透率。研制出了一种油包酸型抗高温乳化酸,并对其性能进行了评价,该乳化酸具有优良的缓蚀性、热稳定性和抗酸敏能力,能抗90℃高温。其在辽河油田4口井的碳酸盐岩储层改造中应用获得了较好的增产效果,酸化作业后,4口井平均日产增油量为51 t/d。建议在现场施工时,先用压裂液压开地层再注入乳化酸,可以降低注酸压力,再大排量注入胶凝酸,这样可以实现酸液的深穿透。Emulsified acids,as a kind of corrosion inhibitor acid,can reduce the reaction rate of acid rocks, thus performing a deep acidification in rocks and enhancing the oil recovery of reservoirs.A high tempera- ture acid-in-oil emulsified acid was developed for use at 90℃.This acid has superior corrosion inhibitive capacity,temperature stability and acid sensitivity tolerance.The use of the acid in 4 wells in Liaohe oil- field increased the average daily production rate of 51 t/d.It is suggested that before injecting the acid,the target formation be fractured with a fracturing fluid,thus reducing the acid injection pressure and the acid may penetrate deeper into the formation.

关 键 词：酸化 乳化酸 酸敏 油包酸型 乳化酸 高温 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]