... Abstract Viscous C/W foams were generated without the use of polymers or surfactants by shearing CO 2 and an aqueous phase containing partially hydrophobic silica nanoparticles in a beadpack filled with 180μm glass beads. Silica particles with 50% SiOH coverage were chosen because they have...

.... This paper investigates the oil mobilization properties of nano-sized silica particles in comparison to nano-sized CDG particles and discusses the underlying mechanisms of microscopic flow diversion. Improved microscopic displacement efficiency has traditionally been coupled to changes in capillary number...