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2 262 587

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IPC

(21) (22)

Application

2004118154/03, 2004-06-15

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Start date

2004-06-15

(22)

Actual filing date

2004-06-15

(45)

Published

2005-10-20

(72)

Inventor

Dudov A.N.Akhmetov A.A.Valitov R.A.Konesev G.V.Dokichev V.A.Kirjakov G.A.Muljukov R.A.Jangirov F.N.Junusov M.S.Konesev V.G.Petrov D.V.Solov'Ev A.Ja.Grekov A.N.Poljakova R.K.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 2262587 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.

SUBSTANCE: well killing fluid mainly includes polyglycoles, aliphatic alcohol and water. Hydrolyzed floatation agent - oxal is additionally introduced in well killing fluid. Above components are taken in the following amounts (% by volume): glycols - 5-30; hydrolyzed floatation agent - 55-70; aliphatic alcohol - 10-15; remainder is water. Aliphatic alcohol is ethyl, isopropyl or butyl alcohol.

EFFECT: reduced foam formation, increased frost-resistance possibility to maintain collecting properties of payout bed.

2 cl, 3 ex, 1 tbl

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RU 2 262 587 C1

Authors

Dudov A.N.

Akhmetov A.A.

Valitov R.A.

Konesev G.V.

Dokichev V.A.

Kirjakov G.A.

Muljukov R.A.

Jangirov F.N.

Junusov M.S.

Konesev V.G.

Petrov D.V.

Solov'Ev A.Ja.

Grekov A.N.

Poljakova R.K.

Jatsynich E.A.

Dates

2005-10-20—Published

2004-06-15—Filed