Disclosed are a heavy oil activator, a preparation method and use thereof. The heavy oil activator has a
structural formula shown in Formula (1). In Formula (1), x, y, z, m, and n are respectively
mass fractions of corresponding chain segments in the
polymer, m being 0.75-0.85, y being 0.20-0.24, and x, z, and n all being 0.001-0.01; and p is a natural number between 2 and 9. The activating
polymer provided has the effects of increasing
viscosity of an aqueous phase while reducing
viscosity of
crude oil, and can serve both as a displacing agent and a
viscosity reducer to realize integration of the two agents. The activating
polymer can increase viscosity of an aqueous phase, has a displacement effect, can emulsify and disperse
crude oil, and increase fluidity of a
mixed phase; the dispersed
crude oil continues to interact with crude oil that has not contacted the polymer, and the aqueous phase interacts with the mixed
oil phase as well as new oil, by way of which continuous interactions, more crude
oil can be constantly produced. The activating polymer has a relatively low interfacial tension and exhibits a certain degree of oil washing capability.