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2 272 901

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(51)

IPC

E21B43/22(2006-01-01)

(21) (22)

Application

2004131796/03, 2004-11-01

(24)

Start date

2004-11-01

(22)

Actual filing date

2004-11-01

(45)

Published

2006-03-27

(72)

Inventor

Safonov Evgenij NikolaevichNazmiev Il'Shat MirgazijanovichAbyzbaev Ibragim Izmailovich

(73)

Holder

Safonov Evgenij NikolaevichNazmiev Il'Shat MirgazijanovichAbyzbaev Ibragim Izmailovich

PERMEABILITY CONTROL METHOD FOR NON-UNIFORM OIL RESERVOIR Russian patent published in 2006 - IPC E21B43/22

Abstract RU 2272901 C1

FIELD: oil and gas industry, particularly to increase oil recovery by reservoir flooding.

SUBSTANCE: method involves injecting industrial soda waste, namely aqueous sludge suspension exiting from Dorr sludge pans into reservoir through injection well so that soda waste is situated between fresh water plugs; forcing-in industrial soda waste; stopping well operation and then bringing the well into operation. The forcing-in operation is carried out by fresh water plug in volume equal to industrial soda waste volume. Well operation is stopped for 24 hours.

EFFECT: increased efficiency and improved oil recovery due to increased conformance and due to direct oil displacement by gelatinous solution.

4 ex, 1 tbl

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RU 2 272 901 C1

Authors

Safonov Evgenij Nikolaevich

Nazmiev Il'Shat Mirgazijanovich

Abyzbaev Ibragim Izmailovich

Dates

2006-03-27—Published

2004-11-01—Filed