Nowadays, brines are not simply regarded as tools for pressure support in reservoirs. Their chemical properties have also been taken into consideration. Chemicals in the brines can alter the rock brine and oil interactions in a favorable way to improve oil recovery. Studies have focused on the determination of such chemicals leading to wettability change and their proper compositions in brine samples. In this study, the properties of brine samples utilization, which can lead to improvement in oil recovery from carbonates, were tried to be determined using wettability measurements.