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2 073 788

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C1

(51)

IPC

(21) (22)

Application

94042119/13, 1994-11-28

(22)

Actual filing date

1994-11-28

(45)

Published

1997-02-20

(72)

Inventor

Krasnopevtseva N.V.Polishchuk A.M.Vlasov S.A.Rafikov L.G.Krikunov N.V.

(73)

Holder

Nauchno-Tekhnicheskoe Ob"Edinenie

COMPOUND FOR INSULATION WORK IN BOREHOLES Russian patent published in 1997 - IPC

Abstract RU 2073788 C1

FIELD: petroleum industry. SUBSTANCE: compounds for increasing filtering resistance have following components: exopolysaccharide, synthesized Arotobacter vinelondii(Lipman) in the form of cultural fluid, and hexaresorcin resin with formalin at this ratio of components, mass %: exopolysaccharide 0.001 to 0.5, resin 0.5 to 5.0, formalin 1.0 to 3.0 water - the balance. EFFECT: high efficiency. 1 tbl

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RU 2 073 788 C1

Authors

Krasnopevtseva N.V.

Polishchuk A.M.

Vlasov S.A.

Rafikov L.G.

Krikunov N.V.

Dates

1997-02-20—Published

1994-11-28—Filed

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