Treatment of subsurface hydrocarbon reservoirs

Details Treatment of subsurface hydrocarbon reservoirs Treatment of subsurface hydrocarbon reservoirs

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) E21B 43/02 (2006.01) E21B 43/24 (2006.01)

Patent

CA 2225637

A method for treating a hydrocarbon-bearing rock formation (14). A colloidal suspension is introduced into the formation. An electrical potential gradient established by means of an anode (18) and a cathode (19) which produces osmotic forces which in turn cause stabilisation of the colloid. This increases the mechanical stability of the formation allowing the hydrocarbon material to be extracted while water production and sand production is suppressed.

Procédé de traitement d'une formation rocheuse porteuse d'hydrocarbures. Une suspension colloïdale est introduite dans la formation. Un gradient de potentiel électrique établi au moyen d'une anode (18) et d'une cathode (19) produit des forces osmotiques qui entraînent la stabilisation du colloïde. Ce procédé augmente la stabilité mécanique de la formation, ce qui permet d'extraire des hydrocarbures en éliminant la production d'eau et de sable.

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