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2 099 520

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C1

(51)

IPC

(21) (22)

Application

95110333/03, 1995-06-19

(22)

Actual filing date

1995-06-19

(45)

Published

1997-12-20

(72)

Inventor

Ryskin A.Ju.Belikova V.G.Ramazanov R.G.

(73)

Holder

Nauchno-Proizvodstvennoe Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

COMPOUND FOR SHUTOFF OF WATER INFLOW TO WELL Russian patent published in 1997 - IPC

Abstract RU 2099520 C1

FIELD: oil-and-gas producing industry. SUBSTANCE: compound comprises the following ingredients in ratio, mas.%: hydrolyzed polyacrylamide, 005-1.0; formaldehyde, 1.0-2.0; water glass, 2.0-8.0; inorganic acid, 2.0-8.0; salt of polyvalent metal, 0.001-0.05; water, the balance. Compound is a stable system with high viscosity characteristics and thermal stability at high temperature of formation (100 C). EFFECT: increased structural viscosity, efficient application in highly water-encroached oil formations. 1 tbl

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RU 2 099 520 C1

Authors

Ryskin A.Ju.

Belikova V.G.

Ramazanov R.G.

Dates

1997-12-20—Published

1995-06-19—Filed

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