Fracture clean-up by electro-osmosis

Details Fracture clean-up by electro-osmosis Fracture clean-up by electro-osmosis

E - Fixed Constructions

21

B

E21B 37/00 (2006.01) C09K 8/80 (2006.01) E21B 43/26 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2741084

A method is given for improving the clean-up of fracture fluid from a fracture by assisting Darcy flow by electro--osmotic effects. Proppants having suitable surface potential, and fracture fluids having suitable electrical conductivity are chosen. Then a suitable electric field is imposed, using electrodes placed on the surface or in adjacent wells. The current creates an electro--osmotic flow that carries fluid to the wellbore.

Linvention concerne un procédé pour améliorer le nettoyage dun fluide de fracture à partir dune fracture en facilitant un écoulement de Darcy au deffets électro-osmotiques. Des agents de soutènement présentant une surface potentielle appropriée et des fluides de fracture présentant une conductivité électrique ont été choisis. Puis, un champ électrique approprié est appliqué au moyen délectrodes placées sur la surface ou dans des parois adjacentes. Le courant crée un écoulement électro-osmotique qui transporte un fluide vers le puits de fond.

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