Hold down apparatus for progressing cavity pump

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 23/00 (2006.01) E21B 33/10 (2006.01) F04B 47/00 (2006.01) F04C 13/00 (2006.01)

Patent

CA 2310198

A hold down apparatus is taught for a progressing cavity pump of the type having a stator, a helical rotor locatable in the stator and rotated by a string of rods, the pump being insertable in a bore of a tubing string by carriage on the rod string. The hold down apparatus includes a sub connected to a lower end of the tubing, the sub having a bore open to the bore of the tubing string and including a pump-engaging member; and a hold down member at the lower end of the stator for insertion into the sub, the hold down member having a bore therethrough with a tag bar extending thereacross and including a tubing-engaging member for engaging with the pump-engaging member of the sub and for abutting against the pump-engaging member hold the stator against rotation relative to the sub

Un appareil de rétention est présenté pour une pompe à rotor hélicoïdal excentré composée d'un stator, d'un rotor hélicoïdal situé dans le stator et tournant sous l'effet d'un train de tiges, la pompe étant insérée dans l'orifice d'un tubing par l'entremise du train de tiges. L'appareil de rétention comprend une réduction raccordée à l'extrémité inférieure du tubing, laquelle réduction est percée d'un orifice qui donne sur celui du tubing et munie d'un organe d'engrenage pour la pompe. Un organe de rétention est situé à l'extrémité inférieure du stator aux fins d'insertion dans la réduction, ledit organe de rétention étant percé d'un orifice traversé transversalement par une barre d'accrochage et comprenant un organe d'engrenage pour le tubing, qui sert au couplage avec l'organe d'engrenage de la réduction pour la pompe, et positionné contre l'organe d'engrenage de la pompe pour empêcher la rotation du stator par rapport à la réduction.

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