Emulsifying Viscosity Reducer Used for Xinjiang Crude Oil

In the paper,an aqueous emulsifying viscosity reducer was developed,which could improve low-temperature fluidity of Xinjiang crude oil. The effect of temperature,single and composite viscosity reducers on the viscosity of Xinjiang crude oil were investigated. The results showed that: the three single viscosity reducer,AEO、OP-10、AES,which had better viscosity reducing effect,were screened. At the same condition,the three viscosity reducer was arranged according to the viscosity reducing effect:AEOOP-10AES. Through orthogonal experiment,the optimum composition of composite viscosity reducer XJ-1 was obtained as follows: 0.3% AEO,0.2% OP-10,0.1%AES and 0.2% additive dosage NaOH. the viscosity of Xinjiang crude oil could be decreased to 40.56 mPa·s and the rate of viscosity reduction was above 98% through adding XJ-1 at 50℃ with the oil-water ratio of7: 3. At the same time,the emulsion had good stability and demulsifying and dewatering were much easier.