Modeling and Simulation of Chemical Additives and Foam Assisted Thermal Recovery

Ran Li


In this work, foam apparent viscosity is calculated with the consideration of liquid slugs between bubbles, wall slip, viscous dissipation, surface traction due to surfactant concentration gradient, pore constriction, pore structure and temperature.  Snap-off and leave-behind dominated foam generation factor is determined. Foam collapse rate is calculated considering lack of surfactants, capillary suction, oil droplets and mass transfer. Strong bubbles are mainly accumulated around the steam chamber border to control steam chamber profile. Weak foams are concentrated inside the chamber to enhance steam trap. Oil production is enhanced and SOR is reduced.