.... There was no connate water in the system. Different solvents were then placed on top of the oil/sand mixtures and the diffusion of the solvent into the sand pack was observed. X-ray CAT was used to monitor density and concentration profiles. Oil concentration profiles in solvent were clearly observed but the solvent...

... enhanced recovery asphaltene complex reservoir recovery process upstream oil & gas porous media interface oil sand mechanism diffusion coefficient concentration steam-solvent combination bitumen experiment simulation model concentration profile oil saturation saturation reservoir...