Abstract

For that viscosity of heavy oil decreases with the increase of temperature, influence of different temperature on flow ability of different types of heavy oil which flow through porous media with different permeability was studied, and flow boundary of different types of heavy oil under different fluidity has been analyzed quantitatively. The experimental results show that the threshold pressure gradients of heavy oil from Henan Oil Field under different permeabilities, different temperature and different porous media are neglectable. Threshold pressure gradient increases with the viscosity of heavy oil, heavy oil starts to flow when the fluidity of crude oil is less than 0.14 mD/mPa·s.