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2 138 627

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Application

98108258/03, 1998-04-28

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Start date

1998-04-28

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Actual filing date

1998-04-28

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Published

1999-09-27

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Inventor

Abaturov S.V.Gordeev A.O.Ramazanov D.Sh.Starkova N.R.Shpurov I.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Neftjanaja Kompanija

METHOD FOR RECOVERY OF RESIDUAL OIL Russian patent published in 1999 - IPC

Abstract RU 2138627 C1

FIELD: oil production industry. SUBSTANCE: according to method, recovery of irreducible oil implies injection of alkali solution into injection wells and recovery of oil through producing wells. Injected into bed is alkali solution with thickening agent. Used in function of thickening agent is modified hydrolytic lignin in amount of 1-10%. Used in function of alkali solution is NaOH, Na2CO3,Na2SiO3. Application of aforesaid method results in increased oil recovery from beds and reduced flooding of recovered product. EFFECT: higher efficiency. 1 cl, 2 tbl

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RU 2 138 627 C1

Authors

Abaturov S.V.

Gordeev A.O.

Ramazanov D.Sh.

Starkova N.R.

Shpurov I.V.

Dates

1999-09-27—Published

1998-04-28—Filed

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