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2 167 281

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IPC

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Application

99116999/03, 1999-08-04

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Start date

1999-08-04

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Actual filing date

1999-08-04

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Published

2001-05-20

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Inventor

Shvetsov I.A.Kabo V.Ja.Manyrin V.N.Dosov A.N.Manyrin V.N.Savel'Ev A.G.

(73)

Holder

Shvetsov Igor' AleksandrovichKabo Vladimir JakovlevichManyrin Vjacheslav NikolaevichManyrin Valerij NikolaevichDosov Aleksandr NikolaevichSavel'Ev Aleksandr Georgievich

METHOD OF NONUNIFORM FORMATION DEVELOPMENT Russian patent published in 2001 - IPC

Abstract RU 2167281 C2

FIELD: oil producing industry. SUBSTANCE: method is realized by injection of composition of mixture of aqueous solution of anionic polymer and salt of polyvalent cation. Aqueous solution of anionic polymer contains preliminarily cross-linked and strongly swollen but insoluble in water gel-particle dispersion and salts of polyvalent cation. Method provides for improvement of rheological and filtering properties of polymer systems deeply penetrating into formation and possessing selective action ensuring fuller isolation of water-encroached highly-permeable partings without reducing of permeability of oil-saturated part of formation. EFFECT: higher oil recovery from uniform formations and isolation of flooded wells. 4 cl, 3 tbl, 3 ex

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RU 2 167 281 C2

Authors

Shvetsov I.A.

Kabo V.Ja.

Manyrin V.N.

Dosov A.N.

Manyrin V.N.

Savel'Ev A.G.

Dates

2001-05-20—Published

1999-08-04—Filed

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