Anti-corrosion powder coating for deep well pipeline as well as preparation method and application of anti-corrosion powder coating

The invention provides a deep well pipeline anti-corrosion powder coating as well as a preparation method and application thereof. The anticorrosive powder coating for the deep well pipeline comprises the following components in parts by weight: 48-54 parts of epoxy resin, 12-13.5 parts of a curing agent, 2-4 parts of modified graphene, 1-2 parts of an auxiliary agent and 26.5-37 parts of pigment filler, wherein the epoxy resin comprises bisphenol A linear novolac epoxy resin, o-cresol formaldehyde epoxy resin and bisphenol A epoxy resin; the curing agent comprises a phenolic hydroxyl curing agent and an aromatic amine curing agent. According to the anticorrosive powder coating for the deep well pipeline, the crosslinking density and the rigid group content can be increased, so that the glass transition temperature of the powder coating is increased, the high-temperature resistance and the hardness of the coating are enhanced, the coating can bear high-temperature and low-temperature alternation, and the coat