FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil industry. Invention refers to the method of primary processing of crude oil P, in compliance with which the above crude oil P is separated into several fractions, some of those fractions are generally subject to hydraulic cleaning, hydrocracking or hydraulic conversion, and then composition of those fractions is changed and at least 2 grades of primarily processed oil Pa, Pc are performed; at that, oil Pa is high-quality oil containing no asphaltenes, and oil Pc is residual oil. The proposed method usually contains at least one initial refining and SDA asphalt removing operation by using the solvent with molecular weight which is at least 50 to separate DAO liquid oil having no asphalt from AS natural asphalt flow. AS asphalt is subject to hydraulic conversion to at least 2 subsequently located reactors in fluidised bed with moderate conversion the degree of which is less than 56%, mixed with natural solvent containing light fractions. DAO component is usually subject to hydrocracking with conversion degree restricted at the level of less than 80%.
EFFECT: obtaining the possibility of producing high-quality oil from crude oil of common quality, which does not contain asphaltenes and residual oil.
11 cl, 1 ex, 8 tbl, 2 dwg
