Study on an Extended Surfactant Heavy Oil Viscosity Reduction Emulsification System
Fatty alcohol polyoxypropylene polyoxyethylene ether sulfate (C<sub>1214</sub>P<sub>8</sub>E<sub>2</sub>S, C<sub>10</sub>P<sub>8</sub>E<sub>2</sub>S, C<sub>10</sub>P<sub>5</sub>E<sub>2</sub>S, and C<sub>10</sub>P<sub>3</sub>E<sub>2</sub>S) extended surfactants were used as the research subjects. These surfactants exhibited exceptional emulsification and viscosity-reducing properties for heavy oil, achieving viscosity reduction efficiencies in excess of 97%. Further investigations revealed that a