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Application

98102968/03, 1998-02-27

(22)

Actual filing date

1998-02-27

(45)

Published

1998-11-10

(72)

Inventor

Sharifullin F.A.Mamedov B.A.Tsykin I.V.Ismagilov R.G.Trubanov V.N.Akimenko S.N.Mikhalkov S.G.

(73)

Holder

Mamedov Boris AbdulovichZazirnyj Dmitrij VladimirovichKorol' Pavel Vladimirovich

METHOD OF CLEANING THE PRODUCING FORMATION CHANNELS Russian patent published in 1998 - IPC

Abstract RU 2121563 C1

FIELD: cleaning of producing formation channels in development oil wells from colmatants of hydrocarbon type and negative effect of killing fluid. SUBSTANCE: method includes injection of aqueous mixture of hydrochloric acid with hydrofluoric acid and polyacrylamide into well through lowered tubing string with packer. Then vibroelastic compound is injected and annular space is closed by packer and wellhead gate. Further, displacing fluid neutral with respect to formation rocks is injected. Volume of displacing fluid is twice as large as volume of injected viscoelastic compound. Process is let stand. Well is flushed after opening of annular space and well work proceeds to completion. EFFECT: higher efficiency of cleaning the porous channels of producing part of oil formation. 5 cl

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RU 2 121 563 C1

Authors

Sharifullin F.A.

Mamedov B.A.

Tsykin I.V.

Ismagilov R.G.

Trubanov V.N.

Akimenko S.N.

Mikhalkov S.G.

Dates

1998-11-10—Published

1998-02-27—Filed

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