E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/16 (2006.01) E21B 3/02 (2006.01)
Patent
CA 2659602
A top drive apparatus for drilling a bore hole, the top drive apparatus comprising a main body (17), a motor apparatus (14), a main shaft (110) and a member (24,26) depending from the main shaft (110) characterised in that said main shaft (110) comprises a torque transfer apparatus (116,126) for transferring torque between said main shaft (110) and said member (24,26) and a separate load transfer apparatus (114,142) for transferring load between said main shaft (110) and said member (24,26).
L'invention concerne un appareil à entraînement par le haut pour le forage d'un trou de forage, l'appareil à entraînement par le haut comportant un corps principal (17), un appareil motorisé (14), un arbre principal (110) et un organe (24, 26) dépendant de l'arbre principal (110), caractérisé en ce que ledit arbre principal (110) comporte un appareil de transfert de couple (116, 126) à des fins de transfert de couple entre ledit arbre principal (110) et ledit organe (24, 26) et un appareil de transfert de charge séparé (114, 142) à des fins de transfert de charge entre ledit arbre principal (110) et ledit organe (24, 26).
Mcfadden Fincham
National Oilwell Varco L.p.
LandOfFree
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