Author/Authors :
Ehsan Sanjari Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, Iran , Ebrahim Nemati Lay Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, Iran , Mohammad Peymani Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, Iran
كليدواژه :
Viscosity , Natural gas , Correlation , Empirical model
چكيده لاتين :
In recent years, there has been an increase of interest in the flow of gas at relatively high pressures
and temperatures. The energy losses calculations in the flow of gases in conduits, as well as
through the porous media constituting natural petroleum reservoirs, requires knowledge of the
viscosity of the fluid at the pressure and temperature involved. This work presents a new
empirical correlation for calculating viscosity of natural gas mixtures. The empirical model
derived from 2870 experimental data of viscosity at different temperatures and pressures. Also the
model can predict viscosity of natural gas accurately for variety ranges pseudo reduced pressure
from 0.01 to 21 and pseudo reduced temperatures from 1 to 3. The accuracy of the new model is
compared to mostly used empirical models used in this work. The results showed that the new
empirical correlation has 0.88% of average absulte relative deviation percent (AARD%) relative to
experimental data. The comparison indicates the superiority of the new method in simplicity and
low deviation relative to other methods used in this work for calculating of natural gas viscosity
