Oil well water plugging method and device based on large pore channel data

The invention discloses an oil well water plugging method and device based on connected large pore channel data, and belongs to the technical field of petroleum. The method comprises the steps that the pore radii are calculated under different capillary pressures according to capillary pressure data of a core sample of a cored well, the pore radii and the permeability and the porosity corresponding to the core sample are subjected to multiple linear regression treatment, and a plurality of pore radius and porosity permeability relation models are established; a pore radius standard value needing water plugging and a target relation model are determined according to the large pore channel industry standard, the pore radius size frequency distribution of the core sample, and the correlationof the plurality of pore radius and porosity permeability relation models and the Pareto principle; and the target relation model is adopted to calculate an average pore radius value of each layer ofa target well, and compare