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2 134 342

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(51)

IPC

(21) (22)

Application

97103446/03, 1997-03-05

(22)

Actual filing date

1997-03-05

(45)

Published

1999-08-10

(72)

Inventor

Khisaeva D.A.Jakimenko G.Kh.Khatmullin F.Kh.Nazmiev I.M.Gafurov O.G.Shirgazin R.G.

(73)

Holder

Aktsionernaja Neftjanaja Kompanija Bashneft'

METHOD OF ADDITIONALLY DISPLACING RESIDUAL OIL Russian patent published in 1999 - IPC

Abstract RU 2134342 C1

FIELD: oil and gas production. SUBSTANCE: as displacing agent, emulsion fluid based on a specified oil-soluble surfactant and crude oil at ratio 1: (3-15) is used, agent being pumped into injector well between separation edges of oil, after which clay suspension is pumped in as efficient stabilizer for filtration properties of emulsions. EFFECT: simplified technology and achieved high efficiency in oil capacity of watered strata in late stage of development. 2 tbl

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RU 2 134 342 C1

Authors

Khisaeva D.A.

Jakimenko G.Kh.

Khatmullin F.Kh.

Nazmiev I.M.

Gafurov O.G.

Shirgazin R.G.

Dates

1999-08-10—Published

1997-03-05—Filed