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2 139 409

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IPC

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Application

98108988/03, 1998-05-07

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Start date

1998-05-07

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Actual filing date

1998-05-07

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Published

1999-10-10

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Inventor

Vjakhirev V.I.Ippolitov V.V.Dobrynin N.M.Akhmetov A.A.Urosov S.A.Frolov A.A.Rjabokon' A.A.Kljusov I.A.

(73)

Holder

Dooo Kompanija Rao

LIGHT-WEIGHT PLUGGING MIXTURE Russian patent published in 1999 - IPC

Abstract RU 2139409 C1

FIELD: oil and gas production industry. SUBSTANCE: this relates to materials used for cementation of oil, gas, and geothermal wells. Light-weight plugging mixture includes portland cement and hollow glass microspheres. Additionally included in mixture is expanded vermiculite sand with following proportioning of components, mas.%: portland cement 92-98, hollow glass microspheres 1-4, expanded vermiculite sand - the balance. Application of aforesaid mixture gives lower contraction of solution with reduction of thermal conductivity of cement stone. EFFECT: higher efficiency. 1 tbl

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RU 2 139 409 C1

Authors

Vjakhirev V.I.

Ippolitov V.V.

Dobrynin N.M.

Akhmetov A.A.

Urosov S.A.

Frolov A.A.

Rjabokon' A.A.

Kljusov I.A.

Dates

1999-10-10—Published

1998-05-07—Filed

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