Knowledge of temperature dependence of liquid viscosity plays an important role in a variety of engineering problems in oil and gas transportation. In this work an experimental database was established, which consists of kinematic viscosity for several petroleum fractions in kerosene and gas oil ranges. A new correlation was developed to predict the effect of temperature on Kinematic Viscosity of petroleum fractions of a wide boiling range from 30 to 200 C. This correlation is based on the correlation of viscosity of pure hydrocarbons that had been developed by Mehrotra (1995). Fitting parameters have been evaluated for 235 experimental data points from 31 true boiling point fractions of Libyan crude oils and for 144 data points Arab heavy, Arab medium, and Arab Berri crude oils. In addition, fitting parameters have also been evaluated for both Libyan and Arabian and other world crude-oil fractions. The proposed correlation fits the kinematic viscosity data with an overall average relative error of 2.7 % for the 33 Libyan crude oil fractions and 2.4 % for the 167 Arabian crude oils fractions, and 3.0 % for the 35 other world fractions.
A New Correlation for Prediction of Viscosities of Omani Fahud-Field Crude Oils