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RU

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2 811 129

(13)

C1

(51)

IPC

C09K8/584(2006-01-01)

C09K8/506(2006-01-01)

E21B43/22(2006-01-01)

E21B33/138(2006-01-01)

(21) (22)

Application

2023108501, 2023-04-05

(24)

Start date

2023-04-05

(22)

Actual filing date

2023-04-05

(45)

Published

2024-01-11

(72)

Inventor

Sentemov Andrei Alekseevich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniia Federalnyi Universitet Imeni M. V. Lomonosova»

COMPOSITION FOR DISPLACEMENT OF OIL FROM FORMATIONS AND SELECTIVE LIMITATION OF WATER INFLOW Russian patent published in 2024 - IPC C09K8/584 C09K8/506 E21B43/22 E21B33/138 

Abstract RU 2811129 C1

FIELD: oil and gas industry.

SUBSTANCE: composition for displacing oil from formations and selectively limiting water inflows contains, wt.%: sodium chloride – 16.5-18.0; technical sodium lignosulfonate – 9.5-10.0; Neftenol-VKS – 5.0-7.0; Neftenol-GF – 0.5-3; oxyethylidene diphosphonic acid – 2.0; water – balance.

EFFECT: improved efficiency of displacement of residual oil by isolating highly permeable zones of the oil reservoir, reducing surface tension at the oil-water phase boundary, and increasing the coverage of reservoir rock by displacement.

1 cl, 3 dwg, 1 tbl

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RU 2 811 129 C1

Authors

Sentemov Andrei Alekseevich

Dates

2024-01-11—Published

2023-04-05—Filed

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