The invention discloses a method for determining influence of acid liquor on Young modulus of compact
carbonate through experiments. The method comprises steps as follows: (1), a compact
carbonate standard core is selected for use, a uniaxial
compressive strength experiment is carried out, and an
empirical relationship between uniaxial
compressive strength of compact
carbonate and the Young modulus is established; (2), a full-
diameter core in a target work area is selected for use, a rock indentation instrument is adopted for implement a rock
scratching experiment,
compressive strength of thecore is tested, and the Young modulus of the core before
acid treatment is acquired; (2), the acid liquor and the core are soaked in a high-temperature and high-
pressure reactor for a reaction; (4), the core soaked with the acid liquor is subjected to the
scratching experiment again in the original
scratching experiment position, the compressive strength of the core is tested, the Young modulus ofthe core after
acid treatment is acquired, and the influence of the acid liquor on the Young modulus of compact carbonate is determined. The principle is reliable, the operation is simple and convenient, the influence of the acid liquor on the Young modulus of compact carbonate under the reservoir condition is authentically evaluated, and
acid fracturing reformation effect of compact carbonate isfurther improved.