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2 347 898

(13)

(51)

IPC

E21B43/22(2006-01-01)

C09K8/582(2006-01-01)

(21) (22)

Application

2007129306/03, 2007-07-30

(24)

Start date

2007-07-30

(22)

Actual filing date

2007-07-30

(45)

Published

2009-02-27

(72)

Inventor

Luk'Janov Jurij ViktorovichSamigullin Il'Jas FanavievichImamov Ruslan ZefelovichKurmakaeva Svetlana AvfasovnaKondrov Vitalij Vladimirovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Neftjanaja Kompanija

ENHANCED OIL RECOVERY METHOD Russian patent published in 2009 - IPC E21B43/22 C09K8/582

Abstract RU 2347898 C1

FIELD: oil and gas industry.

SUBSTANCE: invention is applicable to the oil producing industry and relates particularly to enhanced oil recovery methods. The enhanced oil recovery method consists in injecting successively a biological surfactant, "КШАС-М", and a hydrocarbon solvent with an additive that is a mixture of alkaline agent solution and gossypol resin. The mixture of alkaline agent solution and gossypol resin in the hydrocarbon solvent is injected at a ratio of 0.1:1:2 or 0.1:1:3.

EFFECT: increased oil field development efficiency in late development of heterogeneously permeable reservoirs.

1 tbl, 3 ex

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RU 2 347 898 C1

Authors

Luk'Janov Jurij Viktorovich

Samigullin Il'Jas Fanavievich

Imamov Ruslan Zefelovich

Kurmakaeva Svetlana Avfasovna

Kondrov Vitalij Vladimirovich

Dates

2009-02-27—Published

2007-07-30—Filed