NEW VISCOSITY CORRELATIONS FOR DEAD CRUDE OILS

Based on a non-linear regression method, using relatively a large set of experimental data, new comprehensive correlations for prediction of viscosity of the Iranian heavy and light dead crude oils have been developed. The new models correlate viscosity, °API gravity and temperature for a quite wide range, i.e. 2-570 cP for viscosity and 17-45 for °API gravity. Absolute average deviation (%AAD) of 19.5% and 15.3% are achieved for the heavy (°API=17~28) and light (°API=28~45) crude oils, respectively. A comparison with previous works reveals good prediction ability of the new correlations for the Iranian dead crude oils.