▎ 摘　　要

NOVELTY - Water-soluble fracturing temporary plugging agent comprises quaternary copolymerization temporary plugging agent and graphene oxide modified starch carrier, the quaternary copolymerization temporary plugging agent is sodium 4-ethylbenzenesulfonate compound (I). The mass ratio between quaternary copolymerization temporary plugging agent and graphene oxide modified starch carrier is 5-10:7-12, the graphene oxide modified starch carrier is prepared by uniformly mixing graphene oxide, starch, and metal salt, adding water, stirring and reacting to form gel, drying and pulverizing to obtain graphene oxide modified starch carrier. USE - Used as water-soluble fracturing temporary plugging agent. ADVANTAGE - The water-soluble fracturing temporary plugging agent has excellent thermal stability, anti-pollution ability, carrying capacity, short time for unblocking, high compressive strength, high plugging strength, higher expansion ratio retention rate and shear strength retention rate under salt concentration. DETAILED DESCRIPTION - Water-soluble fracturing temporary plugging agent comprises quaternary copolymerization temporary plugging agent and graphene oxide modified starch carrier, the quaternary copolymerization temporary plugging agent is sodium 4-ethylbenzenesulfonate compound of formula (I). The mass ratio between quaternary copolymerization temporary plugging agent and graphene oxide modified starch carrier is 5-10:7-12, the graphene oxide modified starch carrier is prepared by uniformly mixing graphene oxide, starch, and metal salt, adding water, stirring and reacting to form gel, drying and pulverizing to obtain graphene oxide modified starch carrier. a, b, c, d, e, f, g, h, i, j, k and l = 1-100. An INDEPENDENT CLAIM is included for preparing water-soluble fracturing temporary plugging agent, comprising mixing 5-10 pts. wt. quaternary copolymerization temporary plugging agent with 7-12 pts. wt. graphene oxide modified starch carrier, adding 20-25 pts. wt. water, stirring for 0.5-1 hours, mixing and granulating to obtain granule with a particle size range of 3-5 mm, and drying at constant weight to obtain water-soluble fracturing temporary plugging agent.