TERMIUM Plus®

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progressive cavity pump [1 record]

Record 1 2004-08-04

English

Subject field(s)
  • Equipment (Oil and Natural Gas Extraction)
DEF

A form of sucker rod pumping unit in which the rotor is a chrome-plated steel external helix and the stator is a synthetic elastomer with a double internal helix permanently bonded into a steel housing. Rotation of the rods by a vertical spindle electric motor at the surface causes the rods to stretch a predetermined amount to maintain the rod string in tension. It also causes a cavity containing well fluid to progress upward. The system is a rotary positive-displacement unit.

French

Domaine(s)
  • Outillage (Extraction du pétrole et du gaz)
CONT

Pompes à rotor hélicoïdal excentré. Elles sont composées de deux engrenages hélicoïdaux : l'un, le rotor, en métal, tournant à l'intérieur de l'autre, le stator, en caoutchouc. Le rotor est un engrenage externe à une dent. Le stator est un engrenage interne à deux dents. La différence d'une dent entre rotor et stator crée, par le mouvement tournant excentré du rotor, des alvéoles closes qui se meuvent parallèlement à l'axe du stator, dans un plan hélicoïdal, véhiculant ainsi le produit pompé.

OBS

Équivalent confirmé par Laszlo Szigeti, traducteur au Bureau de la traduction.

Spanish

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