Method for intensification of high-viscosity oil production...

E - Fixed Constructions – 21 – B

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E21B 28/00 (2006.01) E21B 36/04 (2006.01) E21B 43/00 (2006.01) E21B 43/24 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2553071

The invention applies to the oil-producing industry and is intended for the intensification of processes increasing the yield of oil wells developed by conventional methods during production of high viscosity oils. Both objects of said invention have as a technical result an increase in the permeability of a reservoir and a reduction in the viscosity of oil, added to an increase in environmental safety by avoiding use of chemical reagents and steam generators. First object of said invention applies a high power ultrasonic field in the well bottom (10) zone that reduces viscosity of oil, also heating said zone. Second object of said invention comprises a surface ultrasonic generator and at least one ultrasonic magnetostrictive radiator placed at end of oil well tubing, using high frequency currents that warm said tubing maintaining viscosity of oil during transport to the surface.

L'invention concerne l'industrie de production de pétrole et, plus spécifiquement, l'intensification de processus permettant d'augmenter le rendement de puits de pétrole, développés par des procédés traditionnels, au cours de la production de pétroles de viscosité élevée. Les deux objets de cette invention ont pour résultat technique une augmentation de la perméabilité d'un réservoir et une diminution de la viscosité du pétrole, ainsi qu'une meilleure sécurité écologique qui consiste à éviter l'utilisation de réactifs chimiques et de générateurs de vapeurs. Le premier objet de ladite invention permet d'appliquer un champ ultrasonore de puissance élevée dans la zone 10 du fond du puits qui sert à diminuer la viscosité du pétrole et à chauffer, également, ladite zone. Le second objet de ladite invention met en application un générateur ultrasonore de surface et au moins un radiateur magnéto-restrictif ultrasonore placé à une extrémité d'une colonne de production du puits de pétrole, au moyen de courants de haute fréquence qui chauffent ladite colonne maintenant la viscosité du pétrole, pendant son acheminement jusqu'à la surface.

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