The paper presents the essential characteristic,stimulation mechanism and construction process of foamed acid,and analyses the application of foamed acid acidizing technique in east Sichuan Oilfield.

• 介绍了泡沫酸的基本特点、增产机理、设计的基本原则与施工工艺技术,为低压气井酸化解除储层伤害和残液返排提供了行之有效的途径。