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Application

98115225/03, 1998-08-06

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Start date

1998-08-06

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Actual filing date

1998-08-06

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Published

2001-05-20

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Inventor

Almaev R.Kh.Bazekina L.V.Ezhov M.B.Nasibullin A.A.Oljunin V.A.Pustovalov M.F.Fejzkhanov F.A.

(73)

Holder

Aktsionernaja Neftjanaja Kompanija Bashneft'Tpp

METHOD OF DEVELOPING NONUNIFORM OIL FORMATION Russian patent published in 2001 - IPC

Abstract RU 2167278 C2

FIELD: oil producing industry, particularly, methods of development of nonuniform oil formations with use of gelling composition. SUBSTANCE: method includes successive injection of aqueous solutions of polymer, alkali and alumino-containing reagent through injection well. Alumino-containing reagent is used in the form of aluminum hydroxychloride with addition of 0.5 wt.% of corrosion inhibitor. In this case, polymer, alkali and aluminum hydroxychloride are used in ratio of 1:100:100. EFFECT: higher efficiency of development of oil deposits under conditions of formations nonuniform in permeability at late stage of their development. 2 cl, 1 tbl, 1 ex

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RU 2 167 278 C2

Authors

Almaev R.Kh.

Bazekina L.V.

Ezhov M.B.

Nasibullin A.A.

Oljunin V.A.

Pustovalov M.F.

Fejzkhanov F.A.

Dates

2001-05-20—Published

1998-08-06—Filed

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