... mechanisms by which clays affect the permeabilities of sands to water and oil. enhanced recovery Fluid Dynamics free water connate water hypothesis Upstream Oil & Gas core analysis saturation distribution saturation flow in porous media fresh water assumption reduction waterflooding...

... no such thing as an oil-wet or water-wet reservoir rock. basic core parameter oil-wet sample laboratory resistivity measurement Upstream Oil & Gas water saturation porosity saturation log analysis displacement imbibition test capillary pressure curve well logging Brine interstitial water...