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2 224 879

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Application

2002122598/03, 2002-08-22

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Start date

2002-08-22

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Actual filing date

2002-08-22

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Published

2004-02-27

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Inventor

Galljamov I.M.Vagapov R.R.Plotnikov I.G.Mukhametshin M.M.Shuvalov A.V.Khlebnikov V.N.Ovchinnikov R.V.

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Holder

Otkrytoe Aktsionernoe Obshchestvo Aktsionernaja Neftjanaja Kompanija

METHOD FOR CONTROLLING PERMEABILITY OF NOT UNIFORM OIL DEPOSIT Russian patent published in 2004 - IPC

Abstract RU 2224879 C1

FIELD: oil extracting industry. SUBSTANCE: method includes consecutive pumping of aluminum salt solution, buffering fluid and caustic solution into layer. Aluminum salt solution and/or caustic solution include water-soluble admixture, for which lignosulphonate is used. Aluminum salt solution in addition includes corrosion inhibitor, mineralized water with density of no less than 10-20 kg per cubic meter and calcium chloride solution with concentration of no less than 1%. For buffering fluid unleavened water is used. Reagents are pumped into the layer by means of corrosion inhibitor soluted in water being pumped. EFFECT: increased effectiveness of controlling permeability of not uniform oil layers. 6 ex, 8 tbl

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RU 2 224 879 C1

Authors

Galljamov I.M.

Vagapov R.R.

Plotnikov I.G.

Mukhametshin M.M.

Shuvalov A.V.

Khlebnikov V.N.

Ovchinnikov R.V.

Dates

2004-02-27—Published

2002-08-22—Filed

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