▎ 摘　　要

NOVELTY - High-stability oil displacement foam system comprises a foaming agent, a stabilizer and water, where the foaming agent includes sodium benzene sulfonate, and the stabilizer includes graphene oxide nanosheets. The water includes ionized water. USE - As high-stability oil displacement foam system. ADVANTAGE - The system adds graphene oxide nanosheets to make them adsorb on the gas-liquid interface where bubbles are formed, thus reducing gas diffusion, while the nanosheets will stay at the boundary of plateau boundary to prevent the liquid in the liquid film from separating out rapidly, greatly increase the stability of the foam. The amphiphilicity of graphene oxide nanosheets has improved surface activity, reduces the surface tension of the system, is conductive to more stable foam, and further improves the foaming performance of the system. The graphene oxide nanosheets are adsorbed on the surface of tiny oil droplets dispersed in the liquid to prevent oil droplets from coalescing and improve the emulsifying and washing oil performance of the foam system. The preparation method has simple and controllable procedures, high product conversion rate and few by-products, and is widely used in actual production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the high-stability oil displacement foam system, involving (a) dispersing graphene oxide nanosheets in ionized water to prepare a dispersion solution, and (b) adding sodium benzene sulfonate to the dispersion solution, stirring and reacting to obtain the final product.