Inverse gas-liquid chromatography was used to determine specific retention volumes V-g(0) and excess enthalpy of mixing H--E for test compounds (alkanes, alkenes, aromatic hydrocarbons, alcohols, ketones, ethers and other heterocompounds) in oils of different shale oils at 298.2 K. The oil fractions boiling over 398 K at 267 Pa (573 K) of Mandra, Sysola, Jarenga and Perelyub shale oil have been investigated as stationary phases.