Composition and process for selective water permeability...

Details Composition and process for selective water permeability... Composition and process for selective water permeability...

E - Fixed Constructions

21

B

166/17, 31/26

E21B 43/22 (2006.01) C09K 8/512 (2006.01) C09K 8/514 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2032986

La composition injectée dans la formation comprend de l'eau, au moins un composé aldéhydique hydrosoluble à une concentration pondérale de 180 à 20.000 ppm et au moins un polysaccharide non ionique à une concentration pondérale de 200 à 5.000 ppm, la concentration en composé aldéhydique étant supérieure à la concentration en polysaccharide. Elle est utilisable au puits d'injection d'eau ou au puits producteur d'hydrocarbures.

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