| 摘要 |
Provided is a method for producing oil by Winsor Type III microemulsion flooding, wherein an aqueous surfactant formulation comprising at least one non-ionic surfactant having 12 to 20 ethoxy groups and also having a hydrophobic radical of 9 to 18 carbon atoms, and comprising at least one further surfactant different therefrom, is pressed through injection wells into an oil deposit, and crude oil is extracted from the deposit via production wells. |
