Electric submersible pump, tubing and method for borehole...

E - Fixed Constructions – 21 – B

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Details

E21B 43/12 (2006.01) E21B 17/10 (2006.01) F04D 13/10 (2006.01) H02K 5/132 (2006.01)

Patent

CA 2751152

An electric submersible pump assembly (ESP) (21, 120) is deployed in a production tube (20, 100) in a borehole such that the motor (26, 41, 121) of the ESP is spaced from the inner wall of the production tube, defining a conduit (36, 111) through which the pumped well fluid can flow to cool the motor. The production tube may have an enlarged diameter portion (25, 76, 101) within which the motor is positioned. Alternatively or additionally, the ESP and/or the production tube may be provided with stabilising spacers (24, 45, 140, 141) which extend between the ESP and the tube to centralise the ESP in the tube and support it against vibrational movement, the spacers defining an annular conduit (36, 111) between the motor casing and the production tube.

La présente invention concerne un ensemble pompe submersible électrique (ESP) (21, 120) qui est déployé dans un tube de production (20, 100) dans un trou de forage de façon que le moteur (26, 41, 121) de l'ESP soit éloigné de la paroi interne du tube de production, définissant une conduite (36, 111) par laquelle le fluide pompé du puits peut s'écouler pour refroidir le moteur. Le tube de production peut comporter une partie à diamètre agrandi (25, 76, 101) dans laquelle est positionné le moteur. En variante ou en outre, l'ESP et/ou le tube de production peuvent être dotés d'espaceurs de stabilisation (25, 45, 140, 141) qui s'étendent entre l'ESP et le tube pour centraliser l'ESP dans le tube et le soutenir contre un mouvement vibratoire, les espaceurs définissant une conduite annulaire (36, 111) entre le logement du moteur et le tube de production.

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