Process for treating underground formations

Details Process for treating underground formations Process for treating underground formations

E - Fixed Constructions

21

B

E21B 37/06 (2006.01)

Patent

CA 2560938

A process for disrupting filter cake in an underground formation, which process comprises: (i) incorporating into a treatment fluid a solid polymer capable of being converted by hydrolysis into one or more organic acids; (ii) introducing the treatment fluid into the underground formation; and (iii) allowing the solid polymer to hydrolyse in the presence of water to produce organic acid such that acid soluble material within the filter cake or adjacent formation is dissolved.

La présente invention concerne un procédé permettant d'éliminer les gâteaux de filtration dans une formation souterraine, ce procédé comprenant: (i) l'incorporation, dans un fluide de traitement, d'un polymère solide capable d'être converti, par hydrolyse, en un ou plusieurs acides organiques; (ii) l'introduction du fluide de traitement dans la formation souterraine; et (iii) l'écoulement d'un temps nécessaire pour que le polymère solide s'hydrolyse en présence d'eau pour produire un acide organique de telle sorte que la matière soluble acide présente dans le gâteau de filtration ou dans la formation adjacente se dissolve.

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