... the reservoir pressure falls below the thermodynamic equilibrium bubble point pressure, i.e., they form a foam. Finite time is required for the entrained gas to disengage and form a continuous flowing gas phase. The presence of entrained gas increases the effective compressibility of the oil phase and prevents...

... Abstract There has been much interest in recent years in the application of mobility control foams to improve the sweep efficiency of steam and gas miscible EOR processing. While it seems to be well established that foams can reduce gas mobility in oil-free systems, the effect of an oil phase...