▎ 摘　　要

NOVELTY - Emulsified viscosity-reducing drag reducer, comprises magnetic inorganic nanoparticles and non-ionic surfactants as surface-active components. USE - The emulsified viscosity-reducing drag reducer is useful for producing liquid (claimed). ADVANTAGE - The emulsified viscosity-reducing drag reducer can resist high mineralization degree, high asphaltene and high colloid of the liquid emulsification to reduce viscosity, and reusable magnetic graphene oxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing emulsified viscosity-reducing drag reducer, comprising (i) weighing 0.0015-1.5 wt.% magnetic graphene oxide, 0.2-25 wt.% dehydrogenated rosin polyoxyethylene ether, 0.2-25 wt.% dehydrogenated rosin amine polyoxyethylene ether, 10-15 wt.% alkyl phenol polyoxyethylene ether and polar solvent (balance amount), and (ii) adding dehydrogenated rosin polyoxyethylene ether, dehydrogenated rosin amine polyoxyethylene ether and alkyl phenol polyoxyethylene ether while stirring in the water, stirring and/or ultrasonicating at 20-40 ℃ until completely dissolves, then adding magnetic graphene oxide suspended in alcohol into the system, continuously stirring and dispersing uniformly to obtain final product.