The different gas-liquid ratio experimental study on formula of binary foam flooding after polymer flooding

The best gas-liquid ratio among the experimental results of four different gas-liquid ratio (1:2, 1:1, 2:1, 3:1) is picked out after polymer surface foam compound flooding in this paper, and further explanation of elaborated mechanism is made, providing a theoretical basis and reference for oilfield test. The results show that the best gas-liquid ratio of compound foam flooding system is 1:l.