Abstract
Surfactant flooding is one of the main methods of tertiary oil recovery. At present, there are a lot of experimental researches on the problem of microscopic active water flooding mechanism at home and abroad. There are many kinds of research methods, but most of them use core flow experiment. This method can not visualize the effect of oil displacement and oil displacement. In this paper, the micro-model of flat glass can be used to observe the mechanism, and oil displacement in the process of oil displacement. In this experiment, the surface active agents were screened, and two kinds of surfactants were selected from several surfactants commonly used in oilfields such as temperature, salt tolerance. The selected surfactant and the use of appropriate instruments are the means of interfacial tension, emulsification capacity of the determination and evaluation, which helps to determine the optimal formula. Then, the mechanism of emulsification, polymerization and emulsification of oil droplets during active water flooding was studied by using micro plate model of glass. And then we study the effect, significance and influence of active water flooding on enhanced oil recovery. Experiments show that it is feasible to study the effect of active water flooding on the recovery of oil and gas in oil field. It is feasible to study the effect of active water flooding experiment on the oil displacement efficiency.
