Rotary drivehead for downhole apparatus

Details Rotary drivehead for downhole apparatus Rotary drivehead for downhole apparatus

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/02 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2455742

A drivehead for driving a drive string of a rotary pump or motor includes a bearing housing including lubricating fluid therein, a driveshaft extending through the bearing housing and connectable into drive communication with the drive string, and a concentric pump disposed in the bearing housing about the driveshaft, the concentric pump selected to pump the lubricating fluid through the bearing housing as driven by the driveshaft.

Une tête de tubage pour l'entraînement d'un tubage de pompe rotative ou de moteur comprend les éléments qui suivent : un corps de palier comprenant un liquide de lubrification; un arbre de transmission traversant le corps de palier et raccordable en communication d'entraînement au tubage; et une pompe à double palette placée dans le corps de autour de l'arbre de transmission, la pompe à double palette étant choisie pour pomper le liquide de lubrification du corps de palier, entraîné par l'arbre de transmission.

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