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2 204 691

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IPC

(21) (22)

Application

2001105076/03, 2001-02-21

(24)

Start date

2001-02-21

(22)

Actual filing date

2001-02-21

(45)

Published

2003-05-20

(72)

Inventor

Shchavelev N.L.Lushpeeva O.A.Loseva N.T.Rjabtsev A.G.Denisov V.S.Shashkov A.G.Nikolaev V.A.Cherdantseva T.P.

(73)

Holder

Shchavelev Nikolaj Leont'EvichLushpeeva Ol'Ga AleksandrovnaLoseva Nina TimofeevnaRjabtsev Aleksandr GeorgievichDenisov Vasilij Savel'EvichShashkov Aleksandr GennadievichNikolaev Vladimir AlekseevichCherdantseva Tamara Pavlovna

LIGHT-WEIGHT GROUTING COMPOSITION Russian patent published in 2003 - IPC

Abstract RU 2204691 C2

FIELD: mining, particularly, cementing of oil and gas wells with abnormally low formation pressure. SUBSTANCE: light-weight grouting composition has clinker, tripoli and gypsum. It contains heat-treated tripoli and additional limestone. Light-weight grouting composition contains the following ratio of ingredients, wt. %: clinker, 56; heat-treated tripoli, 38; gypsum, 3; limestone, 3. EFFECT: higher activity and preserved activity of grouting composition in prolonged storage, increased flexural/compression strength of cement stone within temperature range of 20-100 C, effective sedimentation stability. 2 tbl, 5 ex

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RU 2 204 691 C2

Authors

Shchavelev N.L.

Lushpeeva O.A.

Loseva N.T.

Rjabtsev A.G.

Denisov V.S.

Shashkov A.G.

Nikolaev V.A.

Cherdantseva T.P.

Dates

2003-05-20—Published

2001-02-21—Filed