... enhanced recovery Fluid Dynamics surfacetension fresh look waterflooding reservoirrock liquid wettability detergent wetness flow in porous media interracialforce multiphaseflow secondary recovery mechanism Upstream Oil & Gas contactangle reservoir rock surface interface...

... that the nonwetting phase residual saturationmay be as high as &? percent. Further tests are planned to obtain a better estimate for residual oil after waterflooding. Separator samples were collected from the Shell Q. Little No. 2 (Barnes unit 219) and recombined in the laboratory with a gas-liquid ratio of 350 scf...