Oil reservoir bottom water volume multiple evaluation method and device, computer equipment and medium

The invention provides an oil reservoir bottom water volume multiple evaluation method and device, computer equipment and a medium. The method comprises the following steps: acquiring a relation curve of formation pressure and underground volume cumulative liquid production capacity according to actual production data of a to-be-evaluated unit and formation pressure data at a corresponding time point; determining a bottom water complete influence stage based on morphological characteristics of the curve; determining the slope of a straight line segment based on the straight line segment corresponding to the bottom water complete influence stage in the relation curve; determining a comprehensive compression coefficient based on the slope of the straight line segment; and determining the bottom water volume multiple of the to-be-evaluated unit based on the comprehensive compression coefficient. An oil reservoir is simplified into a storage tank model, no requirement is made for the shape and the flowing form of