Permeation model establishment method considering microscopic pore throat distribution and readable storage medium

The invention discloses a pore permeability model establishment method considering microscopic pore throat distribution, which comprises the following steps: counting high-pressure mercury injection or nuclear magnetic resonance experiment results of a first rock core sample, and drawing a first relation chart of an average pore throat radius and normal-pressure gas logging permeability; counting an overburden pore permeability experiment result of the second rock core sample, and drawing a second relation chart of the normal-pressure gas logging permeability and the overburden permeability and a third relation chart of the overburden permeability and the overburden porosity; converting the pore throat radius distribution relation of the target area into the overburden pressure permeability distribution relation by utilizing the first relation chart and the second relation chart; the method comprises the following steps: establishing an intermediate random attribute model obeying 0-1 upper average distributio