▎ 摘　　要

NOVELTY - An integrated profile control and displacement agent comprises a plugging agent, a surfactant, a nano-active agent, an auxiliary agent and water. The plugging agent is modified montmorillonite. USE - Integrated profile control and displacement agent used in crude oil production. ADVANTAGE - The integrated profile control agent expands the swept volume of water flooding, improves oil washing efficiency, realizes the integration of control and flooding, and has both plugging and oil washing functions. The preparation method of the integrated profile control agent is simple, and is prepared in a short time at room temperature, which solves the actual problems of complicated preparation technology of the existing control and displacement agent and difficulty in on-site construction and ensures great significance and economic value to control water and stabilize oil in oilfields. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of a profile control and flooding agent, which involves S001, mixing a surfactant, a nano-active agent, an auxiliary agent and water to obtain a nano-active system, and S002, adding modified montmorillonite to the nano active system, and mixing.