METHOD FOR COMPLEX PRODUCTION AND PROCESSING OF MATRIX OIL Russian patent published in 2020 - IPC C10G47/20 C10G47/26 C10G7/02 C10G7/04 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to processing of heavy hydrocarbon material with high content of resins and can be used in processing of high-boiling fractions of matrix oil. Invention relates to an integrated method for complex production and processing of matrix oil, which includes: a) a step of extracting matrix oil from the formation using an aromatic solvent of a heavy portion of matrix oil with a weight ratio of said solvent to matrix oil of 1:1 to 2:1; b) a step for dehydration and desalting of a mixture of matrix oil with an aromatic solvent with subsequent atmospheric distillation and extraction of diesel fraction 180–350 °C, residue more than 350 °C and mixture of hydrocarbon gas, gasoline fraction and aromatic hydrocarbons; c) stage of secondary fractionation of mixture from stage b) to mixture of hydrocarbon gases with light gasoline—fraction up to 105 °C, heavy gasoline—fraction 140–180 °C and a fraction of aromatic hydrocarbons with a boiling point of 105–140 °C; d) hydroconversion of residue of more than 350 °C from step b), characterized by that an aqueous solution of a molybdenum catalyst precursor is added to said residue, the obtained mixture is dispersed to form a stable inverted emulsion, mixed with hydrogen, heated to reaction temperature 380–460 °C and performing hydrogenation in a reactor with an upward flow at said temperature and pressure of 7–10 MPa in the presence of a nanosized catalyst formed from a precursor, to obtain hydrocarbon gas, which is removed as a commercial product, gasoline fraction, diesel fraction 180–350 °C and residue more than 350 °C; e) metal extraction stage, according to which residue is more than 350 °C from step d) is directed to atmospheric vacuum distillation with separation of residue with boiling point of more than 520 °C, from which molybdenum catalyst precursor and metals are separated as a commercial product; e) a step for separating and concentrating aromatic hydrocarbons from the benzene fraction of step d) and aromatic hydrocarbons of step c) by fractionation to obtain a benzene-toluene-xylene fraction with a boiling point of 105–140 °C and content of toluene of not less than 70 wt % for use as an aromatic solvent of heavy part of matrix oil at step a) and residual heavy gasoline fraction; g) stage of hydro-enrichment of mixture of diesel fractions from stages b) and d) together with heavy gasoline of stage c) and residual gasoline fraction of stage e) and hydrogen-containing gas with production of diesel fuel and sulfur as commercial products, hydrocarbon gas and gasoline distillate; h) stage of liquefaction of mixture of hydrocarbon gas and light gasoline of stage c) and hydrocarbon gas of stage g); i) stage of mixing liquefied hydrocarbon gas of stage h) and gasoline distillation of stage g) and discharge of obtained mixture as commercial product—gas condensate component.

EFFECT: technical result is maximum extraction of valuable commercial products: petroleum products, including hydrocarbon gases, sulfur and metals from heavy matrix oil by ecofriendly, non-waste method.

4 cl, 9 tbl, 1 dwg, 2 ex