FIELD: oil and gas production.
SUBSTANCE: invention refers to procedure for decrease of setting point of waxy raw stock containing fraction with boiling point of 450°C. The procedure consists in dilution of said raw stock with solvent containing aliphatic ketone and aromatic compound where volume ratio of ketone and aromatic compound is below 0.7:1, in cooling this mixture to temperature when paraffin settles, in physical removal of paraffin out of oil base and in regeneration of oil product with setting point lower, than that of waxy raw stock. Also, waxy raw stock is produced out of Fisher-Tropsch reaction products.
EFFECT: high output of clear and high viscous crude oil.
13 cl, 1 ex, 2 tbl
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