FIELD: petroleum processing. SUBSTANCE: method including contacting desalted and dehydrated oil with alumino/nickel/molybdenum and alumino/cobalt/molybdenum catalyst charged in mixture with elementary sulfur in hydrogen medium at elevated temperature and pressure is distinguished with that oil is brought in contact with catalyst successively in two steps: first with alumino/nickel/molybdenum catalyst at 350-400 C and pressure 30-40 atm and then with alumino/cobalt/molybdenum catalyst at 400-450 C and pressure 40-70 atm, provided that, after the first step, 1-10 vol % of an organic oxygen-containing compound is added. EFFECT: enhanced efficiency of process.
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