METHOD FOR OIL PRODUCTION FROM INTERMEDIATE DEPOSITS Russian patent published in 1996 - IPC

FIELD: oil production. SUBSTANCE: first heavy resin of gas, benzine and gas oil pyrolysis is used to effect on nearby well area in productive well. Resin boiling point ranges from 180 to 360 C, and density from 1040 to 1080 kg per cubic meter with 2 cubic meter resin amount per 1 meter of effective stratum depth. Then nearby area is effected through injection well by water soluble powdery not hydrolyzed DK-Drill polymer or sedipure with 0.1 - 0.25 % concentration at amount 1 cubic meter per 1 meter of effective stratum depth. DK-Drill or sedipure effect is conducted at 0.25 % concentration and finished at 0.1 % concentration. Total margin volume is 20 - 30 % of total stratum volume. EFFECT: increased coefficient oil displacement. 1 cl, 5 tbl