The Effect of Foam Stability on Foam Flooding Recovery

The former studies have largely covered the factors affecting foam stability rather than the effect of foam stability on foam flooding. The authors present the results of a laboratory study of polymer enhanced foam flooding, including different gas/liquid ratio, injection time, and foam drainage half time t(1/2), and, additionally, the foaming stability comparison of common and enhanced foam under high pressure. The results showed that polymer can highly strength foam stability, the foam which t(1/2) was 24 min with the gas\liquid ratio of 2: 1 at the moment of water cut reached 95% received the most oil incremental volume.