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2 012 787

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C1

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IPC

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Application

5037822/03, 1992-04-15

(22)

Actual filing date

1992-04-15

(45)

Published

1994-05-15

(72)

Inventor

Shirokov V.A.Gorbunov A.T.Petrakov A.M.Zabrodin D.P.Germashev V.G.Kononova N.A.

(73)

Holder

Vsesojuznyj Neftegazovyj Nauchno-Issledovatel'Skij Institut

METHOD FOR DEVELOPMENT OF OIL FIELD Russian patent published in 1994 - IPC

Abstract RU 2012787 C1

FIELD: development of oil fields. SUBSTANCE: method includes injection into fringe formation of product of combined processing of acid tar oils and oxyethylated alkyl phenol APh9-4 with concentration of 0.5-5.0% by mass in hydrocarbon solution, and, then, injection of 0.5-5.0% by mass of aqueous solution of product of combined processing of acid tar oils and oxyethylated alkyl phenols APh9-12. Formation fringes are filled by injection in two cycles with injection volume ratio in each cycle amounting up to 1: 1 to 1: 5 and total consumption of said products - surfactants in amount equalling 0.5-1.5% of pore volume. EFFECT: higher oil recovery from nonuniform formations by equalizing pf permeability of interlayers with different permeability and complete recovery of residual oil reserves affected and nonaffected by water flooding. 1 tbl

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RU 2 012 787 C1

Authors

Shirokov V.A.

Gorbunov A.T.

Petrakov A.M.

Zabrodin D.P.

Germashev V.G.

Kononova N.A.

Dates

1994-05-15—Published

1992-04-15—Filed

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