Method for quantifying classification reservoir space distribution characteristics

The invention relates to a method for quantifying classification reservoir space distribution characteristics. The method comprises the following steps: 1) determining parameter items for classification reservoir division in a target area and establishing a parameter standard; 2) evaluating a well-drilled single-well small-layer classification reservoir according to the parameter standard to obtain evaluation result data; 3) loading the result data into a three-dimensional structure model of the target area, and discretizing the result data; 4) performing correlation analysis on the discretized data in the three-dimensional construction model, and determining quantitative simulation parameters of each type of reservoir of each small layer; and 5) according to the quantitative simulation parameters, respectively simulating the distribution characteristics of different reservoir types of each small layer in a three-dimensional space by using a geostatistical simulation algorithm. According to the method, the ch