water-in-oil (W-O)
3.In order to practice the regular production of the super heavy oil in Liaohe oil field,the super heavy oil (acid value: 5.89mgKOH/g;viscosity:5464mPa?s at 80℃;H2O:9.0wt%) was turn into O/W type emulsion,in which the volume ratio between oil and water is 70:30,by anion surfactant an,nonionic surfactant and other additives.

