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[References: 11 tit.]

The paper considers the question about comparing porosity measurement data by petrophysical and lithological methods. The authors propose lithological coefficients for taking into account the sandstone cementing material composition and the grain size distribution ratio with the average pore size. The cementing material composition (calcite, kaolinite, illite) has the greatest impact on porosity in the Lodochnoe deposit sandstones. To a lesser extent, a correction is made for the ratio of the average grain size to the average pore size. Taking into account the sandstone lithological structural features described in the work, the authors were able to obtain porosity on permeability dependence graph with a coefficient of determination 0.97.