E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/16 (2006.01)
Patent
CA 2535610
The invention relates to an apparatus for moving an Iron Roughneck into position to allow making-up or breaking-out of threaded joints in a drill string. The apparatus may also be used to move other drilling equipment into position on the centerline of the well or at mouse holes. A self-balanced, dual synchronized parallelogram arm is utilized to accomplish the movement of the devices. Hydraulic or pneumatic cylinders are used for extension and retraction of the arm rather than to support the tool. The arm may hold the tool in any position without cylinder assistance. The linkage in the synchronized parallelogram may be accomplished by gears, links, slots, or rollers.
L'invention concerne un dispositif permettant de positionner outil du type Iron Roughneck en vue de l'assemblage ou du désassemblage de liaisons filetées dans un train de tiges de forage. Ce dispositif peut également s'employer pour positionner d'autres matériels de forage dans l'axe central du puits ou de trous de souris. Un bras auto-équilibré à double parallélogramme synchronisé sert à mouvoir les dispositifs. On utilise des vérins hydrauliques ou pneumatiques pour sortir ou rappeler le bras, non pour le soutenir, car le bras est en mesure de maintenir l'outil dans n'importe quelle position sans l'aide de vérins. La timonerie du parallélogramme synchronisé peut être commandée par des pignons, des bielles ou des galets.
Finlayson & Singlehurst
National-Oilwell L.p.
LandOfFree
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