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2 064 571

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IPC

(21) (22)

Application

94029846/03, 1994-08-16

(22)

Actual filing date

1994-08-16

(45)

Published

1996-07-27

(72)

Inventor

Ismagilov T.A.Khisamutdinov N.I.Telin A.G.Igdavletova M.Z.Obikhod A.P.Vorotilin O.I.

(73)

Holder

Vnedrencheskij Nauchno-Issledovatel'Skij Inzhenernyj Tsentr

GEL-FORMING COMPOUND FOR SHUTOFF OF WATER INFLOW AND INCREASE OF OIL RECOVERY Russian patent published in 1996 - IPC

Abstract RU 2064571 C1

FIELD: oil producing industry; shutoff of water inflow and equalization of formation permeability profile. SUBSTANCE: the invention offers gel-forming compound based on acrylic polymer for increase of oil recovery from nonuniform permeable formations. Acrylic polymer is used in form of wastes of polyacrylonitrile fibers or fabrics hydrolyzed in alkali. It also includes sodium silicate and additionally calcium chloride with the following amounts of components, mas.%: hydrolyzed in alkali wastes of fibers and fabrics of polyacrylonitrile 1.0-5.0; sodium silicate 0.3-3.0; calcium chloride 2.0-5.0; the balance, water-. EFFECT: higher efficiency. 3 tbl

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RU 2 064 571 C1

Authors

Ismagilov T.A.

Khisamutdinov N.I.

Telin A.G.

Igdavletova M.Z.

Obikhod A.P.

Vorotilin O.I.

Dates

1996-07-27—Published

1994-08-16—Filed