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2 167 268

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C1

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IPC

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Application

99123421/03, 1999-11-05

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Start date

1999-11-05

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Actual filing date

1999-11-05

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Published

2001-05-20

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Inventor

Vjakhirev V.I.Gnoevykh A.N.Rudnitskij A.V.Dobrynin N.M.Urosov S.A.Rjabokon' A.A.Krylov V.I.Zhidenko G.G.Potapov A.G.Juzvitskij V.P.Kljusov V.A.

(73)

Holder

Dooo Burovaja Kompanija Oao

NONFREEZING PLUG FOR LOW-TEMPERATURE WELLS Russian patent published in 2001 - IPC

Abstract RU 2167268 C1

FIELD: oil and gas producing industry, particularly, substances used for lining of oil, gas, gas-condensate wells in section of permafrost rocks. SUBSTANCE: nonfreezing plug includes bentonite mud powder, hydrocarbon fluid modified with surfactant and additionally swollen vermiculite sand with the following ratio of components, wt.%: bentonite mud powder, 45-55; swollen vermiculite sand, 3-5; hydrocarbon fluid modified with surfactant, the balance. EFFECT: increased compressibility and reduced heat conduction efficiency of plug. 1 tbl

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RU 2 167 268 C1

Authors

Vjakhirev V.I.

Gnoevykh A.N.

Rudnitskij A.V.

Dobrynin N.M.

Urosov S.A.

Rjabokon' A.A.

Krylov V.I.

Zhidenko G.G.

Potapov A.G.

Juzvitskij V.P.

Kljusov V.A.

Dates

2001-05-20—Published

1999-11-05—Filed

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