NEW PREDICTION MODEL FOR NATURAL GAS VISCOSITY AT HIGH PRESSURES AND TEMPERATURES

Viscosities estimation of naturally occurring petroleum gases provides the information needed to accurately work out with petroleum engineering problems . Existing models for viscosity prediction are limited by data , especially at the extremely high pressures encountered in high temperature . This study shows that current methods which predict viscosities of natural gases by using the correlations are about 15% overestimated than the corresponding measuring at high pressures and temperatures , so need for accurate gas viscosity prediction will be arose . Also available commercial gas viscosity measuring devices do not give reliable and repeatable results . The National Institute of Science and Technology (NIST) is a useful source of properties of pure gases at high pressures and high temperatures ; these can be used in statistical analysis procedures to extend the current correlations . Experimental validation for naturally occurring petroleum mixtures is required too .

کلیدواژه ها:

Falling body viscometer ، Gas booster ، NIST ، Viscosity