Supramolecular dynamic gel temporary plugging agent as well as preparation method and application thereof

The invention provides a supramolecular dynamic gel temporary plugging agent as well as a preparation method and application thereof. The preparation method of the temporary plugging agent comprises the following steps: adding a dynamic crosslinking monomer into a polyvinyl alcohol aqueous solution, and uniformly mixing to obtain a mixed solution A; adding a comonomer A, a comonomer B and a nanocellulose material into deionized water, uniformly mixing, adding an initiator, and uniformly mixing to obtain a mixed solution B; and fully and uniformly mixing the mixed solution A and the mixed solution B to obtain the supramolecular dynamic gel temporary plugging agent. The temporary plugging agent provided by the invention has high strength, can smoothly plug formation apertures, and achieves the purpose of effectively preventing heavy oil from invading into a shaft; the temporary plugging agent disclosed by the invention is supramolecular dynamic gel capable of being converted from gel to solution, and mutual con