F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 47/06 (2006.01) E21B 43/12 (2006.01) F04B 17/04 (2006.01)
Patent
CA 2110163
A new and improved control system for monitoring and controlling the operation of a downhole linear d.c. motor-pump assembly (10) and a method of using it for producing a sufficient reciprocating pumping action to lift well fluid through the producing tubing of a well to the ground surface. The system includes a surface monitoring station (11) that is in radio communication with a plurality of remote downhole motor-pump assemblies. Each motor-pump assembly (10) has a surface motor controller, a downhole motor-pump cartridge unit (13) that is adapted to be received in a downhole cartridge sleeve assembly that maintains the cartridge unit in a stationary position for pumping purposes. The motor-pump cartridge unit may be raised or lowered by a control cable (19) within the production tubing (16) for helping to facilitate the repair or replacement of the motor-pump cartridge unit. The motor-pump assembly also includes a plurality of sensors for monitoring the conditions of the well downhole as well as the efficiency of the motor-pump cartridge unit.
L'invention concerne un nouveau système de commande améliorée pour la surveillance et le contrôle du fonctionnement d'un ensemble motopompe (10) linéaire c.c. fond de trou ainsi qu'une méthode qui fait appel à cet ensemble pour produire une action de pompage alternatif permettant de relever le fluide d'un puits au-travers du tube de production jusqu'à la surface du sol. Le système comprend un poste de surveillance (11) en surface qui est en communication radio avec plusieurs motopompes fond de trou se trouvant à distance. Chaque motopompe (10) est dotée d'une commande de moteur en surface, d'une cartouche (13) de motopompe fond de trou adaptée pour être logée dans un manchon fond de trou qui maintient la cartouche en position fixe à des fins de pompage. La cartouche de la motopompe peut être relevée ou abaissée par un câble de commande (19) dans le tube de production (16) qui permet de faciliter la réparation ou le remplacement de la cartouche. La motopompe comprend également plusieurs capteurs servant à surveiller les conditions au fond du puits de même que l'efficacité de la cartouche de la motopompe.
Bolding Vance E.
Escue Nelson B.
Hornsby Howard C.
Ridout & Maybee Llp
Uniflo Oilcorp Ltd.
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