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2 167 279

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IPC

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Application

99116761/03, 1999-07-30

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Start date

1999-07-30

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Actual filing date

1999-07-30

(45)

Published

2001-05-20

(72)

Inventor

Mukhtarov Ja.G.Khatmullin F.Kh.Nazmiev I.M.Bagau S.R.Fejzkhanov F.A.Almaev R.Kh.Bazekina L.V.Gafurov O.G.Jakimenko G.Kh.

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Holder

Otkrytoe Aktsionernoe Obshchestvo Aktsionernaja Neftjanaja Kompanija

METHOD OF CONTROL OF OIL FORMATION PERMEABILITY Russian patent published in 2001 - IPC

Abstract RU 2167279 C2

FIELD: oil producing industry, particularly, methods of reduction of permeability of water-flooded reservoirs and involving in development of new districts of oil and gas deposits. SUBSTANCE: method consists in successive injection of preliminarily prepared mixture of clay suspension with aqueous solution of caustic soda and mineralized water through injection well. In this case, concentrated aqueous solution of caustic soda is used. Ratio of clay suspension and caustic soda in mixture amount from 1:1 to 3:1. Prepared mixture is allowed to stand with periodic stirring. Mixture of clay suspension and concentrated aqueous solution of caustic soda is aged for 1-5 days. EFFECT: higher efficiency. 2 cl, 1 tbl, 3 ex

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RU 2 167 279 C2

Authors

Mukhtarov Ja.G.

Khatmullin F.Kh.

Nazmiev I.M.

Bagau S.R.

Fejzkhanov F.A.

Almaev R.Kh.

Bazekina L.V.

Gafurov O.G.

Jakimenko G.Kh.

Dates

2001-05-20—Published

1999-07-30—Filed