Abstract
A previously developed viscosity model based on the Significant Structure Theory (Cruz-Reyes et al., 2005) was modified for the accurate correlation and/or prediction of viscosity of reservoir fluids varying from low to high molar masses and over wide temperature and pressure ranges; 65-1,300 K, and 1-1,000 bar, respectively. Viscosity modeling was conducted for typical reservoir fluids including N2, CO2, H2S, C1, C2, C3, iC4, C4, and from C5 to C18. The viscosity modeling performance of the present approach was assessed during the representation of experimental viscosities of the aforementioned reservoir fluids obtaining highly satisfactory results.
