Effect of brine composition on oil recovery by waterflooding

In this study, the effect of brine composition on oil recovery by waterfloo ding was experimentally studied. Different compositions of brine were injec ted in to packed one-dimensional unconsolidated limestone with Garzan crude oil (26 degrees API) and distilled water. Ten different brine compositions , three brine mixtures are prepared and distilled water was used for inject ion throughout the study. The highest recovery 18.8% higher than distilled water injection) considering all the experiments was obtained by the inject ion of 2% KCl + 2% NaCl brine mixture.