Nowadays, improving heavy oil recovery draw oil industry attentions. The remaining trapped original oil in place in the oil reservoirs is 70%, which mean only 30% of the OOIP has already been extracted . Many factors cause vast amounts of oil to be trapped in oil reservoirs such as energy depletion, heterogeneity, residual oil, high oil viscosity, fractures, and oil wet reservoir rock. In order to extract more oil, solutions must be applied to overcome the previously mentioned problems, such as secondary and tertiary oil recovery. Many enhanced oil recovery methods (EOR) have been proposed in the literature. These EOR processes could be chemical, thermal, and gas injection. Recently, waterflooding has drawn attention as an emerging EOR process that could increase oil recovery. Low salinity (LS) water is another form of waterflooding used to enhance oil recovery by modifying the injected water compositions. Low salinity (LS) water has been extensively studied in the literature in attempts to significantly increase oil recovery . The LS water flooding controlling function seems to be wettability alteration through modification of oil and mineral surface interactions . Wettability of an oil/brine/sandstone system is a significant factor that governs residual oil saturation.