Sandstone proportion determination method and system, electronic equipment and storage medium

The invention provides a sandstone proportion determination method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a selected limited sandstone data sample, and calculating a feature value of the data sample; acquiring a selected confidence level, and calculating a corresponding tolerance according to the characteristic value and the confidence level; and calculating a pessimistic value and an optimistic value of the sandstone proportion corresponding to the data sample according to the tolerance. The range value of the sandstone proportion corresponding to the data sample can be determined by acquiring the characteristic value of the limited data sample, so that the sandstone data of the corresponding reservoir can be quickly and efficiently acquired, quantitative analysis is performed by utilizing the confidence interval theory and combining the sandstone data, and the probability that the true value falls in the measurement result range is obtained. Acco