FIELD: oil and gas industry.
SUBSTANCE: invention is related to treatment and conversion in stationary layer of heavy crude oil. The invention is referred to pretreatment and hydroconversion of hydrocarbon stock in the form of heavy crude oil containing at least 0.5 wt % of asphaltenes and more than 10 weight ppm of metals (nickel and/or vanadium) in order to receive pretreated synthetic crude oil, wherein the above raw stock is delivered to hydrodemetallisation section comprised of at least 2 interchangeable reaction zones, then at least a part of demetallised effluent is subjected to hydrocracking in the hydrocracking section and wherein a special-purpose catalytic system is used in hydrodemetallisation and hydrodesulphurisation sections.
EFFECT: oil refining that includes reduced quantity of metals, sulphur, nitrogen and other impurities, reduction of the operating cycle to at least 12 months.
12 cl, 1 dwg
