The results of applying a new methodological approach to the complex study of lithological and petrophysical properties and the nature of saturation of collectors of the Achimov formation using the method of multimethod multiprobe neutron logging are presented. Opportunities for MMOs are presented in the study of Achimov reservoirs with hard-to-recover hydrocarbon reserves, characterized by lithological heterogeneity, complex structure of the void space and low reservoir properties. The possibilities of detailed lithological typing of rocks using multimethod multiprobe neutron logging technology are confirmed. The application of the proposed approach significantly improves the accuracy and detail of the selection of reservoir beds with a hard to recover reserves even with an insufficient amount of core material.