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2 254 454

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IPC

(21) (22)

Application

2004105689/03, 2004-02-25

(24)

Start date

2004-02-25

(22)

Actual filing date

2004-02-25

(45)

Published

2005-06-20

(72)

Inventor

Kovalenko P.V.Nurgalieva I.Z.Komarova N.M.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti I Gaza"

WELL KILLING COMPOSITION Russian patent published in 2005 - IPC

Abstract RU 2254454 C1

FIELD: oil and gas production.

SUBSTANCE: water-based composition that can be used for killing of well during pullout of hole and well remedial work as well as for temporary abandonment of well contains, wt %: carboxymethylcellulose3.5-4.5, sodium hydroxide1.5-2.0, copper sulfate 0.3-0.4, and methanol 4.0-16.0.

EFFECT: improved rheological properties of composition and increased lifetime of formed gels.

1 tbl

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RU 2 254 454 C1

Authors

Kovalenko P.V.

Nurgalieva I.Z.

Komarova N.M.

Dates

2005-06-20—Published

2004-02-25—Filed