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IPC

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Application

2004115031/03, 2004-05-18

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Start date

2004-05-18

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Actual filing date

2004-05-18

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Published

2005-09-10

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Inventor

Ismakov R.A.Akhmetov A.A.Dudov A.N.Konesev G.V.Dokichev V.A.Kirjakov G.A.Muljukov R.A.Jangirov F.N.Junusov M.S.Biglova R.Z.Bajbulatova N.Z.Petrov D.V.Solov'Ev A.Ja.Konesev V.G.Dokichev T.V.

(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 2260112 C1

FIELD: oil production industry, particularly for filling oil and gas-condensate wells with special fluids before well workover, especially at low temperatures.

SUBSTANCE: well-killing fluid includes polyglycols, aliphatic alcohol and water. The fluid additionally has flotation agent-oxal. Above components are taken in the following amounts (% by volume): polyglycols - 5-35, flotation agent-oxal - 45-65, aliphatic alcohol - 15-20, remainder - water. Isopropyl, ethyl or butyl alcohol is used as the aliphatic alcohol.

EFFECT: increased frost-resistance and viscosity, prevention of foaming and reduced permeability of bottomhole zones by reason of well killing.

2 cl, 3 ex, 1 tbl

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RU 2 260 112 C1

Authors

Ismakov R.A.

Akhmetov A.A.

Dudov A.N.

Konesev G.V.

Dokichev V.A.

Kirjakov G.A.

Muljukov R.A.

Jangirov F.N.

Junusov M.S.

Biglova R.Z.

Bajbulatova N.Z.

Petrov D.V.

Solov'Ev A.Ja.

Konesev V.G.

Dokichev T.V.

Dates

2005-09-10—Published

2004-05-18—Filed