Pore-scale bubble population dynamics of CO2-foam at reservoir pressure

• Pore-scale CO 2 foam bubble flow, texture and trapping dynamics at high pressure. A comprehensive laboratory investigation of essential features phenomena during dynamic flow supported by the population balance model framework. The for mobility control in porous media is dictated texture, or density, which commonly expressed as number bubbles per unit flowing gas. In most high-pressure studies media, local cannot be determined due to opaque systems. Here, we unlock real-time pressure (100 bar) utilizing a realistic pore network with an extended field view. We identified snap-off dominant generation mechanism, additional fining caused backward propagation. Foam coalescence continuous injection resulted large gas channels parallel general direction that reduced overall apparent viscosity. fraction remained trapped ( X t > 0.97) stationary pores divert increase sweep efficiency. was calculated from pore-scale, viscosity agreed similar test performed core-scale. Hence, improved understanding evolution n f ) can strengthen validation numerical models upscaling phenomena, instrumental development scale implementation carbon utilization storage applications.