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2 013 525

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C1

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IPC

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Application

5026453/03, 1991-07-22

(22)

Actual filing date

1991-07-22

(45)

Published

1994-05-30

(72)

Inventor

Fil' V.G.Ezlova L.A.Kovalenko V.D.Kostenko D.A.Navrotskij B.I.Koptenko V.V.Dombrovskaja S.P.

(73)

Holder

Ukrainskij Nauchno-Issledovatel'Skij Institut Prirodnykh Gazov

PLUGGING COMPOSITION Russian patent published in 1994 - IPC

Abstract RU 2013525 C1

FIELD: oil and gas producing industry. SUBSTANCE: plugging composition contains (parts by mass): portland cement 80-120; fly ash 80-120; asbestos 2-3; a mineral salt 1.0-1.5; and water 120. As the mineral salt is used a mixture of sodium chloride and sulfate, with chloride to sulfate ratio of 1: 1. The plugging composition features good deforming properties, increased strength of cement stone, and increased adhesion of cement stone with casing string. EFFECT: improved properties. 1 tbl

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RU 2 013 525 C1

Authors

Fil' V.G.

Ezlova L.A.

Kovalenko V.D.

Kostenko D.A.

Navrotskij B.I.

Koptenko V.V.

Dombrovskaja S.P.

Dates

1994-05-30—Published

1991-07-22—Filed

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