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2 209 929

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IPC

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Application

2000132128/03, 2000-12-20

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Start date

2000-12-20

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Actual filing date

2000-12-20

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Published

2003-08-10

(72)

Inventor

Vjakhirev V.I.Frolov A.A.Sorokin V.F.Podshibjakin V.V.Kljusov V.A.Ovchinnikov V.P.Ovchinnikov P.V.Karimov I.N.

(73)

Holder

Tjumenskij Gosudarstvennyj Neftegazovyj UniversitetDooo Kompanija Oao

MODIFIED GYPSUM-CEMENT MIXTURE Russian patent published in 2003 - IPC

Abstract RU 2209929 C2

FIELD: oil and gas industry, cementing of oil, gas and gas condensate wells. SUBSTANCE: modified gypsum-cement grouting mixture includes Portland cement, gypsum and calcium hydrocarboaluminate and quinhydrone with following proportion of components, per cent by mass: Portland cement 50.0-96.0; gypsum 2.0-25.0; calcium hydrocarboaluminate 1.98-24.95; quinhydrone 0.02-0.05. EFFECT: raised frost resistance, decreased degree of destruction of cement stone. 1 tbl _

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RU 2 209 929 C2

Authors

Vjakhirev V.I.

Frolov A.A.

Sorokin V.F.

Podshibjakin V.V.

Kljusov V.A.

Ovchinnikov V.P.

Ovchinnikov P.V.

Karimov I.N.

Dates

2003-08-10—Published

2000-12-20—Filed