▎ 摘　　要

NOVELTY - A method of utilizing modified hydrogel to assist in supporting unconsolidated hydrate reservoir fractures, involves preparing a modified high-swelling hydrogel, pressurizing the target layer and injecting with pre-fluid to form an artificial main fracture, adding the modified high-swelling hydrogel to the sand-carrying liquid, stirring and heating to obtain a mixed liquid, injecting the mixed solution into the artificial main fracture to the target position, after stopping the pump, injecting ammonium persulfate solution to make the fracturing fluid fully break the gel, and then opening the well for flowback production. USE - Method of utilizing modified hydrogel to assist in supporting unconsolidated hydrate reservoir fractures. ADVANTAGE - The modified high-swelling hydrogel effectively makes up for the shortage of conventional proppant materials, and solves the problems of poor propping effect and fluid seepage in fracture propping in unconsolidated hydrate reservoirs, etc.