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2 138 626

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IPC

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Application

98106122/03, 1998-03-26

(24)

Start date

1998-03-26

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Actual filing date

1998-03-26

(45)

Published

1999-09-27

(72)

Inventor

Starkova N.R.Antipov V.S.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Neftjanaja KompanijaAntipov Vasilij Sergeevich

METHOD FOR RECOVERY OF RESIDUAL OIL FROM FLOODED NON-UNIFORM BED Russian patent published in 1999 - IPC

Abstract RU 2138626 C1

FIELD: oil production industry. SUBSTANCE: according to method, injected into bed through injection well is micellar solution containing water-soluble surface-active material and oil-soluble surface-active material, hydrocarbon liquid and water. Additionally, prior to injection into bed or in process of injecting micellar solution into bed, undertaken is isolation of highly permeable zones of bed by means of injecting fine-dispersive solid particles. Application of aforesaid method yields larger oil recovery from beds and reduced flooding of recovered product. EFFECT: higher efficiency. 2 tbl

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RU 2 138 626 C1

Authors

Starkova N.R.

Antipov V.S.

Dates

1999-09-27—Published

1998-03-26—Filed

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