Elastogel water shutoff agent and preparation method thereof

The invention relates to an elastogel water shutoff agent and a preparation method thereof and mainly solves the problem that an existing selective water shutoff agent has large ground viscosity and a poor plugging effect. The elastogel water shutoff agent is characterized by being prepared from the following ingredients in percentage by weight: 2 to 5% of acrylamide monomer, 5 to 15% of adhesion improving agent, 0.05 to 0.15% of polymerization inhibitor, 0.3 to 0.6% of colloidal stabilizer, 0.3 to 0.6% of cross-linking agent, 0.2 to 1.0% of retarder, 0.2 to 1.0% of initiator, 0.2 to 0.5% of chelating agent and the balance of water. The invention further provides the preparation method of the elastogel water shutoff agent. The preparation method comprises the steps of firstly dissolving polymerization inhibitor of hydroquinone monomethyl ether with 45 to 55 DEG C hot water and dissolving initiator of sodium persulfate with clean water; then sequentially adding the acrylamide monomer, the adhesion improving ag