.... These studies were performed both in water-wet Berea sandstone and in hydrophobic porous polyethylene. In hydrophobic porous polyethylene, oil saturations increased and gel was destroyed (presumably dehydrated) quite quickly in the smallest pores (10 −6 mm 3 ). Also, oil saturations increased and gel...

... Abstract X-ray computed microtomography (XMT) was used to understand why a Cr(HI)-acetate-HPAM gel reduced permeability to water 80–90 times more than that to oil in strongly water-wet Berea sandstone and in strongly oil-wet porous polyethylene. During oil flow after gel placement in Berea...