METHOD FOR PRODUCTION OF PETROLEUM Russian patent published in 2021 - IPC E21B43/22 C09K8/584 C09K8/588 

Abstract RU 2758303 C1

FIELD: petroleum production.

SUBSTANCE: invention relates to the petroleum industry and can be used in development of petroleum deposits by the flooding method with a formation temperature of 20 to 95°C, with a total salt content in the formation and injected water from 0.034 to 24.0 wt.%. In the method for production of petroleum, consecutively injected into the formation are an aqueous solution of an acrylamide-based polymer with a surface-active composition containing 0.001 to 0.15 wt.% anionic surface-active agent (recalculated by 100%) at a weight ratio of the anionic surface-active agent to said polymer of 0.009÷2.7, an aqueous solution of an acrylamide-based polymer, and/or water continuously or cyclically.

EFFECT: an increase in the petroleum recovery coefficient and intensification of production of petroleum.

1 cl, 7 tbl, 4 ex

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RU 2 758 303 C1

Authors

Gorodnov Vladimir Pavlovich

Gorodnov Konstantin Vladimirovich

Dates

2021-10-28Published

2020-10-12Filed