Scientists from Rice University have achieved the emulsion of microscopic salt water droplets in crude oil by using their right composition. The study revealed that wells are more productive when the concentration of salt and water is balanced to both the oil and the rock, carbonate or sandstone formation. Moreover, they also demonstrated that emulsion droplets in crude oil by the low-salinity solution can affect the wettability, a process that decides how easily the rock will release oil. Researchers have been unable to find the correlation between the effectiveness of low-salinity water and experimental condition so far. The study is the first to identify some of the properties of the oil that indicate how effective this technique can be in a specific field.