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2 023 143

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Application

5034187/03, 1992-03-25

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Actual filing date

1992-03-25

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Published

1994-11-15

(72)

Inventor

Gorbunov A.T.Moskvin V.D.Bruslov A.Ju.Starkovskij A.V.Rogova T.S.Sultanov T.A.Balikoeva M.A.Shakhverdiev A.A.Kh.Palij V.O.

(73)

Holder

Vsesojuznyj Neftegazovyj Nauchno-Issledovatel'Skij Institut

METHOD FOR TREATMENT OF BOTTOM-HOLE FORMATION ZONE OF PRODUCING WELL Russian patent published in 1994 - IPC

Abstract RU 2023143 C1

FIELD: oil producing industry. SUBSTANCE: method consists in injection of acid microemulsion into bottom-hole formation zone allowing the reagents in the well to undergo the reaction, additional successive injection water-solving solvent and 1.0-5.0 mas. % hydrocarbon solution of water-repellent cationic surfactant with volume ratio of acid microemulsion, water-solving solvent and hydrocarbon solution of water-repellent surfactant 1: (0.28-0.32):(0.95-1.0). EFFECT: higher oil recovery due to rise of period of recovery of final water permeability. 1 tbl

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RU 2 023 143 C1

Authors

Gorbunov A.T.

Moskvin V.D.

Bruslov A.Ju.

Starkovskij A.V.

Rogova T.S.

Sultanov T.A.

Balikoeva M.A.

Shakhverdiev A.A.Kh.

Palij V.O.

Dates

1994-11-15—Published

1992-03-25—Filed

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