The Self-generating Acid Plugging Removal Drawdown and Augmented Injection Technology

In consideration of the high-pressure and poor effect of the water injection well,in Baolang Oilfield,based on the screening of self-generating acid,a self-generating acid system was used for testing cuttings dissolved rate,the characteristics of low corrosion,slow reaction rate and strong deep plugging removal capability were obtained.Core simulation experiment shows that the self-generating acid system can make the permeability increase of low permeability cores for nearly 215.7%,and it is applied in 4 wells of Baolang Oilfield,good application effect is obtained.