CO₂ Foam Behavior in Carbonate Rock: Effect of Surfactant Type and Concentration

An understanding of how CO2 foam flows through a reservoir rock is useful for many subsurface applications, including enhanced oil recovery and storage. There are economic environmental benefits in identifying surfactants that exhibit good foaming behavior with at both low concentrations high qualities. Core flood experiments have been carried out to investigate the supercritical foams flowing high-permeability Indiana Limestone. The concentration response two surfactants, betaine sultaine, were investigated. For transition quality maximum apparent viscosity decreased reducing surfactant concentration. A comparison between behaviors these N2 was also out. It found generated stronger qualities, but better maintaining