Method for inhibiting reactive argillaceous formations, and...

E - Fixed Constructions – 21 – B

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E21B 33/138 (2006.01) C09K 8/035 (2006.01) C09K 8/12 (2006.01) C09K 8/60 (2006.01) C09K 17/00 (2006.01)

Patent

CA 2106753

La présente invention concerne un procédé de stabilisation de formations argileuses fortement réactives en présence d'eau. Le procédé consiste à mettre en contact tes formations argileuses avec une solution comportant un polymère ayant des motifs hydrophiles et hydrophobes. Le polymère selon l'invention est adapté à inhiber le gonflement et/ou la dispersion de la coche argileuse par ses capacités d'adsorption et d'hydrophobie. L'invention concerne également l'application du procédé à un fluide de forage.

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