作者: Guoqing Tang , Norman R. Morrow
DOI: 10.1029/129GM16
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摘要: Sensitivity of oil recovery to injection brine composition has been reported for a variety circumstances including trends increased crude with decrease in salinity. Absolute permeabilities sandstones synthetic reservoir brines and dilutions these show little sensitivity salinity when the initial injected are same composition. With as dilute brine, pH outflow absolute permeability decreased, but never less than 50% its original value. Such changes, if any, were much rocks low clay content. During course oil, interfacial tensions effluent reduced by about 25% relative values brine. Effluent after showed no response absence an water saturation. Changes resulting from flow through Berea sandstone small. Fines production reduction was greatly presence oil.