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2 021 487

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IPC

(21) (22)

Application

4951512/03, 1991-06-27

(22)

Actual filing date

1991-06-27

(45)

Published

1994-10-15

(72)

Inventor

Kurochkin B.M.Alekseev M.V.Prusova N.L.Nazarbekov D.N.Utkelbaev R.U.Demidova N.S.Imaev A.A.Bekmasheva T.V.

(73)

Holder

Vsesojuznyj Nauchno-Issledovatel'Skij Institut Burovoj Tekhniki

GROUTING COMPOUND FOR ISOLATION OF LOST CIRCULATION ZONE Russian patent published in 1994 - IPC

Abstract RU 2021487 C1

FIELD: well drilling. SUBSTANCE: grouting compound contains, parts by weight: mud powder 20-40; polyoxyethylene 0.75-1.25; sea water 200-225; soda ash 0.3-0.8; slomel filler 5-10. Mud is prepared on sea water treated with soda ash. Second portion of sea water treated with soda ash is used to prepare portion of 1% aqueous solution of polyoxyethylene. Two solutions are mixed in volumetric ratio of 1:1.25. EFFECT: higher clogging capacity and strength of compound. 3 tbl

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RU 2 021 487 C1

Authors

Kurochkin B.M.

Alekseev M.V.

Prusova N.L.

Nazarbekov D.N.

Utkelbaev R.U.

Demidova N.S.

Imaev A.A.

Bekmasheva T.V.

Dates

1994-10-15—Published

1991-06-27—Filed