Synthesis and Application Performance of Viscosity Reduction Additive to Super-Viscous Crude Oil

By analyzing the internal complex construction of Liaohe super-viscous crude oil,it is found that the high viscosity is caused by high nitrogen content.Then a new nitrogen polymeric viscosity reduction additive was prepared,whose characteristic groups were characterized by IR and()~1H-NMR.Results show that the additive has the optimum viscosity reduction effect on super-viscous crude oil,the viscosity decline rate of reached above 65%.The flow model of different super-viscous crude oil systems was predicted by correlating two typical super-viscous crude oils viscosity-temperature relative at different shear rates.The correlation coefficient of viscosity-temperature prediction model is proved to be 0.987.Furthermore,the viscosity-temperature correlation figure at different shear rates,which appear to be more obviously and directly,was(obtained) by relating the three parameters of viscosity,shear rate and temperature.