Study on Demulsification Technology of Heavy Oil Blended in Xinjiang Oilfield

HYW (Hong Yi Wu line) heavy oil emulsion in Xinjiang Oilfield (Karamay, China) is a kind of with high viscosity and emulsification. Its reaches 120,000 mPa·s at 40 °C. The has no demulsification. Even if the demulsification temperature 90 degrees, concentration demulsifier 260 mg/L. In this paper, new process thermochemical after blending studied. First, SE low-viscosity 640 water cut 90% was selected as blended oil. Study line different temperatures fully blended. results show that model conforms to Bingham model. When °C content 30%, less than 10,000 mPa·s. With increase temperature, continues decline. exceeds 80 °C, 1000 final design 70 160 mg/L best parameter. field rate more 90%. This experiment lays foundation for emulsified crude developed by oilfield.