E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 4/00 (2006.01) E21B 17/04 (2006.01) E21B 17/05 (2006.01) F16C 41/02 (2006.01)
Patent
CA 2509085
Bore hole tool assembly (1) comprising a housing (2) and a mandrel (3) reaching along an axial direction into the housing and a bearing system for transferring an axial load between the housing and the mandrel and allowing rotation of the housing relative to and about the mandrel, wherein the bearing system comprises at least two bearing stages (8, 9) each arranged to transfer part of the axial load, whereby each bearing stage comprises bearing means (4, 6) and mitigation means (5, 7) for distributing the load substantially proportionally over the respective bearing stages.
L'invention concerne un ensemble outil pour trou de forage comprenant un boîtier et un mandrin pénétrant le long d'un sens axial dans le boîtier ainsi qu'un système palier permettant de transférer une charge axiale entre le boîtier et le mandrin et permettant la rotation du boîtier par rapport et autour du mandrin. Le système comporte au moins deux étages, chacun disposé de manière à transférer une partie de la charge axiale, chaque étage comprenant des moyens paliers et des moyens de mitigation permettant de distribuer la charge de manière sensiblement proportionnelle sur les étages respectifs.
Shell Canada Limited
Smart & Biggar
LandOfFree
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