Borehole cleaning using downhole pumps

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 37/00 (2006.01) E21B 41/00 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2650793

Apparatus for borehole cleaning, comprises: a tubular conveyance for extending from the surface into a borehole to a region to be cleaned; a motor mounted at the end of the tubular conveyance that in use is introduced into the borehole; a pump connected to the motor and having a nozzle; a power cable extending trough the tubular conveyance from the surface to provide power to the motor; the pump being arranged such that, when positioned in the borehole and operated by the motor, the pump withdraws material from the borehole through the nozzle and pumps it into the tubular conveyance to the surface.

La présente invention concerne un appareil de nettoyage de trou de forage qui comprend : un moyen de transport tubulaire destiné à s'étendre à partir de la surface dans un forage jusqu'à une région qui doit être nettoyée ; un moteur monté au niveau de l'extrémité du moyen de transport tubulaire qui, durant l'utilisation, est introduit dans le forage ; une pompe qui est reliée au moteur et comporte une buse ; un câble électrique qui s'étend à travers le moyen de transport tubulaire à partir de la surface pour fournir de l'électricité au moteur ; la pompe étant agencée de sorte que, lorsqu'elle est positionnée dans le forage et actionnée par le moteur, la pompe aspire un matériau à partir du forage à travers la buse et la pompe dans le moyen de transport tubulaire jusqu'à la surface.

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