Adamantane hydrocarbons have been isolated from Cenomanian heavy naphthenic oil of the Russkoe field using the thiocarbamide adduction method. Steam distillation of the oil has given a fraction (boiling range 105–150°C) containing 0.36 wt % adamantane, from which a concentrate containing 18.2 wt % C10–C14 adamantane derivatives has been obtained. Adamantane and its derivatives in the crude oil, oil fractions, and concentrate have been identified, and adamantane has been quantified using the gas chromatography—mass spectrometry technique.

The paper investigates physico-chemical properties, hydrocarbon composition and product quality of a number of naphthenic oils of Siberia. It is shown that kerosene-gas-oil distillates of the West Siberian oils have low freezing temperature and can be used for winter diesel fuels base and arctic fuels as well. High concentrations of the adamantanoids in the heavily biodegraded oils allow us to consider them as components for production of high density jet fuels.