Reservoir classification method and system

The invention relates to the technical field of reservoir research, and discloses a reservoir classification method and system. The method includes the steps that firstly, a mercury injection experiment is conducted on a rock core to acquire mercury injection experimental data of the rock core, and then pore structures of the rock core are classified according to the mercury injection experimental data of the rock core to acquire classification types of the pore structures of the rock core; standard mercury injection coefficients are calculated through a formula; the classification types of the pore structures of the rock core are combined with the standard mercury injection coefficients to acquire classification types of comprehensive parameters of reservoirs; scales of the rock core are utilized to conduct logging, and actual mercury injection coefficients are extracted from a logging curve; the classification types of the comprehensive parameters of the reservoirs are combined with the actual mercury injec