Novel preparation method of schiff base oil well acidification corrosion inhibitor and application of preparation method

The invention relates to a novel preparation method of a schiff base oil well acidification corrosion inhibitor and application of the preparation method. The corrosion inhibitor comprises the following components in percentage by weight: 5-20 percent of schiff base compound, 0.5-2 percent of cyclohexylamine, 1-3 percent of methoxy amine, 3-5 percent of hexadecyl trimethyl ammonium chloride, 15-20 percent of N'N-dimethyl formamide and 50-75.5 percent of solvent. The corrosion inhibitor has extremely strong adsorption, can form a compact protective film on a metal surface and is extremely suitable for corrosion resistance of different oil pipe steel in acid fracturing construction of petroleum exploitation industry. The acidification corrosion inhibitor used for the oil pipe steel can also be promoted and used in pipeline acid washing of industries of chemical industry, water supply and drainage, boilers, steel mill and the like. The application temperature of the corrosion inhibitor in an acidification process can reach 140 DEG C; and the corrosion inhibitor is suitable for hydrochloric acid with concentration of reaching up to 25 percent, and has the characteristics of less using amount, high efficiency, wide application temperature range, suitability for oil pipes of different materials, good dispersion in acid solution, easiness and convenience for production and the like.