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2 127 798

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IPC

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Application

96114502/03, 1996-07-19

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Actual filing date

1996-07-19

(45)

Published

1999-03-20

(72)

Inventor

Kljusov A.A.Korneev V.I.Krivoborodov Ju.R.Polozkov A.V.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Prirodnykh Gazov I Gazovykh Tekhnologij Rossijskogo Aktsionernogo Obshchestva

GYPSUM-CEMENT PLUGGING MIXTURE Russian patent published in 1999 - IPC

Abstract RU 2127798 C1

FIELD: oil and gas production industry. SUBSTANCE: mixture relates to plugging solutions which are used for cementation of oil, gas, and gas-condensate wells in permafrost conditions. Gypsum-cement mixture contains portland cement, α - semihydrate of calcium sulfate and hydrocarboaluminate of calcium at following proportion of components, mas.%: portland cement, 50-60; α - semihydrate of calcium sulfate, 20-25; hydrocarboaluminate of calcium, the balance. Hydrocarboaluminate is by-product from overall processing of nephelines to alumina. EFFECT: reduction of water sedimentation or setting of solution together with increasing water-resistance of stone created on base of gypsum-cement mixture. 1 tbl

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RU 2 127 798 C1

Authors

Kljusov A.A.

Korneev V.I.

Krivoborodov Ju.R.

Polozkov A.V.

Dates

1999-03-20—Published

1996-07-19—Filed

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