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2 140 535

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IPC

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Application

98112902/03, 1998-06-29

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Start date

1998-06-29

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Actual filing date

1998-06-29

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Published

1999-10-27

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Inventor

Safonov E.N.Khlebnikov V.N.Almaev R.Kh.Asmolovskij V.S.Sajfutdinov F.Kh.Bazekina L.V.

(73)

Holder

Aktsionernaja Neftjanaja Kompanija

METHOD OF CONTROLLING FORMATION PERMEABILITY Russian patent published in 1999 - IPC

Abstract RU 2140535 C1

FIELD: oil and gas production. SUBSTANCE: composition for controlling permeability of formation and insulating water inflows contains 95.0-99.0% of alkaline caprolactam production waste or its mixture with industrial sweet water wherein waste represents at least 5.0%, and 0.01-5.0% of water-soluble polymer, said waste being alkaline caprolactam production drainage or alkaline adipic plasticizer. EFFECT: increased oil recovery of nonuniform oil formations. 7 tbl, 3 ex

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RU 2 140 535 C1

Authors

Safonov E.N.

Khlebnikov V.N.

Almaev R.Kh.

Asmolovskij V.S.

Sajfutdinov F.Kh.

Bazekina L.V.

Dates

1999-10-27—Published

1998-06-29—Filed

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