Method for treating a subterranean formation

Details Method for treating a subterranean formation Method for treating a subterranean formation

E - Fixed Constructions

21

B

E21B 43/25 (2006.01) C09K 8/72 (2006.01) C09K 8/86 (2006.01) E21B 37/06 (2006.01) E21B 43/27 (2006.01)

Patent

CA 2446525

A method for increasing the permeability of a subterranean formation is disclosed in which an amount of an aqueous mixture, sufficient to increase the permeability of the formation, comprising specified aminopolycarboxylic anionic species, and specified cationic species, is injected into the formation matrix.

L'invention concerne un procédé permettant d'augmenter la perméabilité d'une formation souterraine. Selon ce procédé, une certaine quantité d'un mélange aqueux, suffisant pour augmenter la perméabilité de la formation et comprenant des espèces anioniques aminopolycarboxyliques spécifiées et des espèces cationiques spécifiées, est injectée dans la matrice de la formation.

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