Wettability characterization of reservoirs are important for determining appropriate reservoir simulation models including relative permeability of fluids in the rock, residual phase saturation, capillary pressure, and composition of fracture fluids ). It also affects the distribution of fluids in the pore space, which in turn affects the electromagnetic properties of the rock such as electrical resistivity (Mungan and Moore 1967) and dielectric permittivity ). Therefore, uncertainty in wettability of the reservoir can cause irreversible damage to the reservoir during secondary recovery treatments and result in incorrect estimation of petrophysical properties including hydrocarbon in-place.