Method for constructing novel oil-water distribution model of low-permeability sandstone reservoir

The invention relates to the field of oil-gas field development geology, in particular to a method for constructing a novel oil-water distribution model of a low-permeability sandstone reservoir. The method comprises the following steps: S1, determining a macroscopic layer section of an other-source buoyancy reservoir forming mode of a target oil reservoir; s2, analyzing and determining sedimentary facies types and facies belt characteristics of reservoir forming macroscopic interval reservoirs; s3, on the basis of deposition, construction and reservoir forming research, the effective range of oil content of the target oil reservoir is determined; s4, determining distribution characteristics of permeability of each reservoir of the oil reservoir; s5, dividing oil reservoir permeability partitions on the basis of the reservoir permeability distribution characteristics and related industrial standards; and S6, according to the reservoir permeability zoning result of the oil reservoir, determining whether the oi