FIELD: oil and gas industry.
SUBSTANCE: invention is related to hydrocracking processes, under conditions of which large proportion of heavy hydrocarbon stock e.g. Vacuum Gas Oil (VGO) turns to hydrocarbons with lower molecular mass and lower boiling temperature. The invention relates to the method of production of base oil, involving: a) hydrocracking of heavy hydrocarbon stock with hydrocracking catalyst containing the preset amount less than 15 wt % of beta-zeolite with flow coming out of a hydrocracking plant containing at least 40 wt % of hydrocarbons boiling at temperature of 382°C (720°F), and b) separation from flow coming out of a hydrocracking plant of unconverted oil with pour point not above 18°C (65°F) in form of high-boiling fraction containing base oil.
EFFECT: improvement of base oil quality.
11 cl, 1 dwg, 4 tbl, 2 ex
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