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2 019 682

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C1

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IPC

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Application

5034987/03, 1992-03-31

(22)

Actual filing date

1992-03-31

(45)

Published

1994-09-15

(72)

Inventor

Sharipov А.U.Dolganskaja S.I.Rjabova L.I.

(73)

Holder

Zapadno-Sibirskij Nauchno-Issledovatel'Skij I Proektno-Konstruktorskij Institut Tekhnologii Glubokogo Razvedochnogo Burenija

COMPOUND FOR ISOLATION OF FORMATIONS, LOST CIRCULATION CONTROL AND CEMENTING OF WELLS Russian patent published in 1994 - IPC

Abstract RU 2019682 C1

FIELD: well drilling and operation. SUBSTANCE: compound contains, mas.% : cement 28.8-43.7; wastes of cement production from calcium- magnesium limestone - cement dust separated from exhaust gases by electric precipitation 6.1-14.1; polyelectrolyte of cation type VPK-402 based on quaternary ammonium bases 0.2-0.5; the balance, water. VPK-402 is dissolved in water. Produced solution is used for mixing cement, cement dust and mud powder. Compound is light-weight cement slurry forming stone with high strength and isolation properties due to its high expansion factor and low permeability. EFFECT: higher efficiency. 1 tbl

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RU 2 019 682 C1

Authors

Sharipov А.U.

Dolganskaja S.I.

Rjabova L.I.

Dates

1994-09-15—Published

1992-03-31—Filed

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