C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/58 (2006.01) C08L 29/04 (2006.01) C08L 33/00 (2006.01) C08L 39/06 (2006.01) C09K 8/588 (2006.01)
Patent
CA 2761821
Composition based on anionic polymers or water-soluble amphoteric (co)polymers suitable for viscosifying the injection fluids for oil recovery, characterized in that, before dilution with the injection fluid, it further contains at least 3 stabilizing agents selected from the group comprising oxygen reducing agents, precipitating agents, free radical scavengers, complexing agents and sacrificial agents, the said stabilizing agent being suitable for preventing the chemical degradation of the polymer once the polymer is introduced into the injection fluid.
L'invention porte sur une composition, à base de polymères anioniques ou de (co)polymères amphotères hydrosolubles, appropriée pour l'augmentation de la viscosité des fluides d'injection pour la récupération de pétrole, caractérisée en ce que, avant dilution avec le fluide d'injection, elle contient en outre au moins 3 agents stabilisants choisis dans le groupe comprenant les agents réduisant l'oxygène, les agents précipitants, les désactivateurs de radicaux libres, les agents complexants et les agents sacrificiels, ledit agent stabilisant étant approprié pour empêcher la décomposition chimique du polymère une fois le polymère introduit dans le fluide d'injection.
Favero Cedrick
Gaillard Nicolas
Giovannetti Bruno
Heenan Blaikie Llp
S.p.c.m. Sa
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