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2 044 872

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C1

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IPC

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Application

92000841/03, 1992-10-15

(22)

Actual filing date

1992-10-15

(45)

Published

1995-09-27

(72)

Inventor

Priklonskij A.Ju.Stupochenko V.E.Poddubnyj Ju.A.Sorkin A.Ja.Kan V.A.

(73)

Holder

Vserossijskij Neftegazovyj Nauchno-Issledovatel'Skij Institut

METHOD FOR STIMULATION OF POOL WITH NONUNIFORM RESERVOIRS Russian patent published in 1995 - IPC

Abstract RU 2044872 C1

FIELD: oil producing industry. SUBSTANCE: method for stimulation of pool with nonuniform reservoirs includes withdrawal of oil through producing well and subsequent injection of aqueous solution of clay suspension containing sodium hydroxide with concentration of 0.05-0.1 mas. in equal portions. Solutions are injected by fringes with volume of 50-200 m3 each up to reduction on intake capacity of water injection well by value not in excess of 50% EFFECT: higher oil recovery due to increased depth of stimulation and value of filtering resistance in highly permeable intervals with highly mineralized formation water and increased degree of oil washing-off from washed zones. 3 tbl

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RU 2 044 872 C1

Authors

Priklonskij A.Ju.

Stupochenko V.E.

Poddubnyj Ju.A.

Sorkin A.Ja.

Kan V.A.

Dates

1995-09-27—Published

1992-10-15—Filed

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