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2 026 968

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IPC

(21) (22)

Application

5012668/03, 1991-11-25

(22)

Actual filing date

1991-11-25

(45)

Published

1995-01-20

(72)

Inventor

Topchiev D.A.Zheltov Ju.V.Kudinov V.I.Kim M.B.Shurupov E.V.Priklonskij A.Ju.Stupochenko V.E.Janovskij Ju.G.

(73)

Holder

Priklonskij Anatolij Jur'Evich

METHOD FOR STIMULATION OF POOL WITH BEDS OF NONUNIFORM PERMEABILITY Russian patent published in 1995 - IPC

Abstract RU 2026968 C1

FIELD: oil production. SUBSTANCE: method for stimulation of pool with beds of non- uniform permeability includes successive injection of lignosulfonate, water polymethyldiallylammonium chloride. Reagents are injected in cycles with total volume up to 20-30% of pore volume of treated zone. Content of polymethyldiallylammonium chloride amounts to 1-5 mas.%, and lignosulfonate 17-30 mas.%. Volume of water fringe makes 1/3-1/2 of volume of each reagent of one cycle. EFFECT: higher efficiency. 2 cl, 3 dwg, 6 tbl

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RU 2 026 968 C1

Authors

Topchiev D.A.

Zheltov Ju.V.

Kudinov V.I.

Kim M.B.

Shurupov E.V.

Priklonskij A.Ju.

Stupochenko V.E.

Janovskij Ju.G.

Dates

1995-01-20—Published

1991-11-25—Filed

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