Investigation on effect of HPAM on interfacial properties between asphaltene in Gudao crude oil and simulation water

Interfacial properties of Gudao crude oil and asphaltene simulation oil are studied with interfacial tension meter, interfacial viscoelastometer and Zeta potential, and the effect of HPAM concentration on interfacial properties is also researched. The results indicate that the interfacial tension between Gudao crude oil and simulation water, asphaltene in aviation kerosine and simulation water will increase when HPAM is added to these systems. But the interfacial tension is stable with HPAM concentration increasing. When the concentration of HPAM is more than 5.0 mg/L, with HPAM concentration increasing, interfacial shear viscosity rise apparently, and with shear rate increasing, but when the aging time increases from 1h to 12 h interfacial shear viscosity will increase. In addition, Zeta potential of the surface of oil droplets will rise because of HPAM affiliated to the system.