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2 721 917

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C1

(51)

IPC

E21B33/138(2006-01-01)

E21B43/22(2006-01-01)

C09K8/50(2006-01-01)

(21) (22)

Application

2019125105, 2019-08-07

(24)

Start date

2019-08-07

(22)

Actual filing date

2019-08-07

(45)

Published

2020-05-25

(72)

Inventor

Sorkin Aleksandr YakovlevichStupochenko Vladimir EvgenevichKan Vladimir Aleksandrovich

(73)

Holder

Sorkin Aleksandr YakovlevichStupochenko Vladimir EvgenevichKan Vladimir Aleksandrovich

METHOD FOR SELECTIVE ISOLATION OF HIGH-PERMEABILITY INTERVALS OF A FORMATION Russian patent published in 2020 - IPC E21B33/138 E21B43/22 C09K8/50 

Abstract RU 2721917 C1

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular, to methods for isolation of high-permeability intervals of reservoir in injection and production wells. Method includes pumping into the well a water-soluble polymer suspensions in saline specific gravity of 1.14–1.18 g/cm3 with the addition of a bactericide ATREN-bio. At that, said suspension is overflushed by cross linker solution.

EFFECT: obtaining more durable water-insulating material in high permeable intervals of the formation, which retains its strength properties for a longer period of time, thereby increasing the duration of the insulation effect.

1 cl, 3 tbl

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RU 2 721 917 C1

Authors

Sorkin Aleksandr Yakovlevich

Stupochenko Vladimir Evgenevich

Kan Vladimir Aleksandrovich

Dates

2020-05-25—Published

2019-08-07—Filed

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