Performance evaluation of emulsifying viscosity reducer for super heavy oil

The effect of temperature,oil-water ratio and dosage of emulsifying viscosity reducer R-1,R-2 for a kind of super heavy oil HN from well G7412 in Henan on viscosity reducing influence was studied.The best application conditions of these two emulsifying viscosity reducers were as follows:temperature 70 ℃,amount of viscosity reducer R-1 0.9% and oil-water ratio 4∶6,the viscosity reducing rate reached 99.88%;temperature 90 ℃,amount of viscosity reducer R-2 0.9% and oil-water ratio 7∶3,the viscosity reducing rate reached 98.92%.The conclusions of infrared spectrum showed that as the reduction of formation of hydrogen bonds by heterocyclic or amino,association degree of colloid and asphaltene decreased,then viscosity of super heavy oil HN declined.