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2 262 588

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IPC

(21) (22)

Application

2004118178/03, 2004-06-15

(24)

Start date

2004-06-15

(22)

Actual filing date

2004-06-15

(45)

Published

2005-10-20

(72)

Inventor

Akhmetov A.A.Dudov A.N.Bajbulatova N.Z.Konesev G.V.Dokichev V.A.Kirjakov G.A.Muljukov R.A.Jangirov F.N.Junusov M.S.Biglova R.Z.Gerchikov A.Ja.Petrov D.V.Solov'Ev A.Ja.Konesev V.G.Grekov A.N.Jatsynich E.A.

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Ufimskij Gosudarstvennyj Neftjanoj Tekhnicheskij Universitet Vpo Ugntu)Institut Organicheskoj Khimii Ufimskogo Nauchnogo Tsentra Rossijskoj Akademii Nauk Unts Ran)

WELL KILLING FLUID Russian patent published in 2005 - IPC

Abstract RU 2262588 C1

FIELD: oil production industry, particularly to kill gas-condensate and oil wells with the use of special fluids before well-workover operation performing, especially under low temperatures and abnormally low formation pressure.

SUBSTANCE: well killing fluid mainly includes aliphatic alcohol and water. Hydrolyzed floatation agent - oxal and floatation agent - oxal are included in well killing fluid. Above components are taken in the following amounts (% by volume): flatation agent - 20-45, hydrolyzed floatation agent - 25-35; aliphatic alcohol - 20-35, remainder is water. Aliphatic alcohol is ethyl, isopropyl or butyl alcohol.

EFFECT: reduced density, increased frost-resistance, as well as funnel viscosity and plastic viscosity of well killing fluid; possibility to maintain collecting properties of payout bed.

2 cl, 3 ex, 1 tbl

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RU 2 262 588 C1

Authors

Akhmetov A.A.

Dudov A.N.

Bajbulatova N.Z.

Konesev G.V.

Dokichev V.A.

Kirjakov G.A.

Muljukov R.A.

Jangirov F.N.

Junusov M.S.

Biglova R.Z.

Gerchikov A.Ja.

Petrov D.V.

Solov'Ev A.Ja.

Konesev V.G.

Grekov A.N.

Jatsynich E.A.

Dates

2005-10-20—Published

2004-06-15—Filed