E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/02 (2006.01)
Patent
CA 2654932
A drawworks (1) device on a drill floor (32), the drawworks (1) including an upper pulley assembly (2) connected to a heave-compensated or fixed mounting (8), and a main block (4) connected to a pipe mount (24) which is laterally movable in at least one direction relative to the drilling centre (34) of the drill floor, and the pulley assembly (2) being pivotal about a horizontal first axis (16) which is perpendicular to the direction of lateral movement.
Dispositif de treuil (1) sur un plancher de forage (32). Le treuil (1) comprend un ensemble de poulie supérieure (2) raccordé à un support fixe ou à correction de tangage (8), et un bloc principal (4) raccordé à un support de tube (24) qui se déplace latéralement dans au moins une direction par rapport au centre de forage (34) du plancher de forage. L'ensemble de poulie (2) pivote autour d'un premier axe horizontal (16) qui est perpendiculaire à la direction du déplacement latéral.
National Oilwell Norway As
Ridout & Maybee Llp
LandOfFree
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