EMPLOYMENT OF OIL-BITUMEN PRODUCT AS REAGENT INCREASING OIL RECOVERY OF FORMATION AND METHOD OF TREATING OIL FORMATION Russian patent published in 1999 - IPC

Abstract RU 2140529 C1

FIELD: oil and gas production. SUBSTANCE: oil-bitumen product is drawn out of productive wells of high-viscosity oil deposits by different physico- chemical methods: steam-to gas method , thermal-steam treatment, in-situ combustion, reagent pumping. Oil formation is treated by flooding wells and pumping therein above oil-bitumen product or its solution with chemical reagents or polymers, or hydrocarbon solvents. Oil-bitumen product and reagents can be pumped either simultaneously or successively. If reagents are used in the form of finely ground materials, their solution with oil-bitumen product is subjected to mechanochemical activation. EFFECT: increased oil recovery of formation capable of varying filtration characteristics. 4 cl, 2 tbl

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RU 2 140 529 C1

Authors

Chendarev V.V.

Vasjasin G.I.

Chaganov M.S.

Volkov Ju.V.

Nikolaev V.I.

Nenarokova N.I.

Dates

1999-10-27—Published

1997-01-16—Filed