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2 013 521

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C1

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IPC

(21) (22)

Application

4820047/03, 1990-03-21

(22)

Actual filing date

1990-03-21

(45)

Published

1994-05-30

(72)

Inventor

Sergeev B.Z.Reznik E.G.Gajdenko I.F.Kovalev N.I.

(73)

Holder

Tsentral'Naja Nauchno-Issledovatel'Skaja Laboratorija Proizvodstvennogo Ob"Edinenija

METHOD FOR ISOLATION OF WATER ENCROACHED BEDS Russian patent published in 1994 - IPC

Abstract RU 2013521 C1

FIELD: oil and gas producing industry, well repair work. SUBSTANCE: water-oil emulsion is injected in the well in successive batches together with cement slurry, with water phase comprising 40-60% , viscosity of each successive emulsion batch being higher than those of the previous batch, and water to cement ratio comprising 0.7-0.9. EFFECT: improved isolation.

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RU 2 013 521 C1

Authors

Sergeev B.Z.

Reznik E.G.

Gajdenko I.F.

Kovalev N.I.

Dates

1994-05-30—Published

1990-03-21—Filed

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