Abstract
Sayyouh, M.H., Hemeida, A.M., Al-Blehed, M.S. and Desouky, S.M., 1991. Role of polar compounds in crude oils on rock wettability. J. Pet. Sci. Eng., 6: 225-233. The main objective of this research was to study the effect of polar compounds present in some Saudi crude oils on rock wettability.
It was found that the contact angle increases with increasing percentage of polar compounds in crude oil at 22 degrees C. A minimum contact angle, however, was obtained at 2.7 wt% polar compounds at 50 degrees C. Increasing temperature tends to make the core sample oil-wet, in both cases of using crude oils or their fractions.