earticle

영어

Although started late, the development of ASP flooding technology in China was rapid. With the spread of the field test of ASP flooding, the effect of the emulsifying property of the composite system during the process of seepage on the oil displacement efficiency has gradually become the problem that people are concerning. In this paper, taking Jing-11 fault block reservoir in Huabei Oil Field as the research object, the influence rule of alkali, surfactant and polymer on the stability of the crude oil emulsion was inspected through indoor experiment. Besides, on the basis of the controlling variables method and under the circumstance of other conditions remains unchanged, the simulated displacement experiment was conducted using the physical model for ASP system of emulsion type and non-emulsion type surfactant respectively. It is proved that the emulsifying capacity of ASP flooding has significant effect on improving the oil displacement efficiency.