PROCEDURE FOR WITHDRAWAL OF CRUDE OIL FROM UNDERGROUND FORMATION Russian patent published in 2011 - IPC C09K8/584 E21B43/22

Abstract RU 2434041 C1

FIELD: gas and oil production.

SUBSTANCE: there is used water fluid medium applied for withdrawal of crude oil from underground formation. This medium includes water and one or more phosphorus-organic materials. Procedure for withdrawal of crude oil from the underground formation consists in delivery of the above said water fluid medium into the formation.

EFFECT: increased oil recovery of underground formations.

28 cl, 1 ex, 4 dwg

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RU 2 434 041 C1

Authors

Futterer Tobias Jokhannes

Khaf Lorens Alan

Rierson Robert Li

Dates

2011-11-20—Published

2008-06-12—Filed