Pore- and Core-Scale Insights of Nanoparticle-Stabilized Foam for CO-Enhanced Oil Recovery.

Nanoparticles have gained attention for increasing the stability of surfactant-based foams during CO foam-enhanced oil recovery (EOR) and CO storage. However, the behavior and displacement mechanisms of hybrid nanoparticle-surfactant foam formulations at reservoir conditions are not well understood. This work presents a pore- to core-scale characterization of hybrid nanoparticle-surfactant foaming solutions for CO EOR and the associated CO storage.