Compositions for oil recovery and methods of their use

Details Compositions for oil recovery and methods of their use Compositions for oil recovery and methods of their use

C - Chemistry, Metallurgy

08

G

C08G 65/00 (2006.01)

Patent

CA 2740198

Embodiments of the present disclosure include compositions for use in enhanced oil recovery, and methods of using the compositions for recovering oil. Compositions of the present disclosure include a nonionic, non-emulsifying surfactant having a CO2-philicity in a range of about 1.5 to about 5.0, carbon dioxide in a liquid phase or supercritical phase, and water, where the nonionic, non-emulsifying surfactant promotes a formation of a stable foam formed of carbon dioxide and water.

L'invention concerne, dans des modes de réalisation, des compositions à utiliser dans une récupération améliorée de pétrole, ainsi que des procédés d'utilisation de ces compositions pour récupérer du pétrole. Les compositions selon l'invention comportent un tensio-actif non ionique, non émulsifiant présentant une philicité de CO2 dans une plage comprise entre environ 1,5 et environ 5,0, du dioxyde de carbone en phase liquide ou en phase supercritique, et de l'eau;  ledit tensio-actif non ionique, non émulsifiant favorisant la formation d'une mousse stable constituée de dioxyde de carbone et d'eau.

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