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2 186 199

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IPC

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Application

2001103603/03, 2001-02-09

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Start date

2001-02-09

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Actual filing date

2001-02-09

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Published

2002-07-27

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Inventor

Vjakhirev V.I.Urosov S.A.Frolov A.A.Sokolovich A.V.Kljusov V.A.Konovalov E.A.Potapova I.A.Juzvitskij V.P.

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Holder

Dochernee Obshchestvo S Ogranichennoj Otvetstvennost'Ju Burovaja Kompanija Oao

LIGHT-WEIGHT GROUTING MIXTURE Russian patent published in 2002 - IPC

Abstract RU 2186199 C1

FIELD: oil and gas producing industry, particularly, grouting mixtures of low density. SUBSTANCE: invention may be used in cementing of wells complicated by presence of permeable, slightly bound and liable to hydraulic fracturing rocks. Light-weight grouting mixture includes portland cement, calcium chloride and peat with fraction characterized by residue on 5 mm sieve in amount of not more 15 mas.%: and additional carboxymethyl cellulose with the following ratio of components, mas.%: portland cement, 76-88; said peat, 8-16; calcium chloride, 3.5-7.0; carboxymethyl cellulose, the balance. EFFECT: reduced destruction degree of cement stone. 1 tbl

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RU 2 186 199 C1

Authors

Vjakhirev V.I.

Urosov S.A.

Frolov A.A.

Sokolovich A.V.

Kljusov V.A.

Konovalov E.A.

Potapova I.A.

Juzvitskij V.P.

Dates

2002-07-27—Published

2001-02-09—Filed