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2 144 977

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IPC

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Application

97103897/03, 1997-03-13

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Actual filing date

1997-03-13

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Published

2000-01-27

(72)

Inventor

Gnoevykh A.N.Rjabokon' A.A.Rudnitskij A.V.Vjakhirev V.I.Konovalov E.A.Kljusov A.A.Spitsyn V.V.Subbotin V.A.Osokin A.P.Krivoborodov Ju.R.Kuznetsova T.V.

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Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Prirodnykh Gazov I Gazovykh Tekhnologij Rossijskoe Aktsionernoe Obshchestvo

OIL WELL CEMENT FOR LOW-TEMPERATURE WELLS Russian patent published in 2000 - IPC

Abstract RU 2144977 C1

FIELD: gas and oil producing industry. SUBSTANCE: oil-well cement includes portland cement, plasticizer and antifreezing additive. It additionally contains expansion component in the form of gypsum and/or alumina cement. Antifreezing additive is used in the form of chloride of alkali or alkali-earth metal. Oil-well cement includes the following amounts of components, wt.%: portland cement, 48-80; expansion components, 20-50; antifreezing additive, 4-6; plasticizer, 0.15-0.7. EFFECT: nonshrinking oil-well cement for low-temperature wells with regulated setting time and high bending strength. 4 cl, 2 tbl

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RU 2 144 977 C1

Authors

Gnoevykh A.N.

Rjabokon' A.A.

Rudnitskij A.V.

Vjakhirev V.I.

Konovalov E.A.

Kljusov A.A.

Spitsyn V.V.

Subbotin V.A.

Osokin A.P.

Krivoborodov Ju.R.

Kuznetsova T.V.

Dates

2000-01-27—Published

1997-03-13—Filed