Organic polymer composite pour point depressant as well as preparation method and application thereof

The invention relates to an organic polymer composite pour point depressant and a preparation method and application thereof, and relates to the technical field of pour point depressants, the organic polymer composite pour point depressant comprises a polymer pour point depressant and organic micro-nano particles; the organic micro-nano particles are micro-nano polymethyl methacrylate microspheres. The organic micro-nano particles adopted by the invention have good dispersibility and better organic compatibility, can generate stronger interaction with the polymer pour point depressant, can provide a large number of nucleation templates for crystallization and precipitation of wax molecules, change the morphology of precipitated wax crystals and play a certain role in dispersing the wax crystals; the condensation point and the low-temperature viscosity of the wax-containing crude oil are greatly reduced; meanwhile, the organic micro-nano particles are easy to obtain and relatively low in cost, so that the cost