Compounding Viscosity Reducer for Crude Oil and Evaluating Effect

The effects of different temperature,single and composite viscosity reducers on the viscosity of crude oil in an oilfield of Henan province were studied.The results showed that the viscosity decreased with the temperature increasing.When the temperature was above 60 ℃,the viscosity decreased slowly and stabilized gradually.The optimum composition were gained as follows: the dosage of SDS,OP-10,AES and additive dosage(NaOH) 0.5%,0.3%,0.1%,0.05%,respectively,temperature 40 ℃.The rate of viscosity reduction was above 98.5%.