E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/07 (2006.01) E21B 31/107 (2006.01)
Patent
CA 2283958
A torque shock absorber apparatus (39) comprised of a mandrel (2) and cylinder (8) with torque absorbing means (8-12, 27) to absorb excessive torque while permitting the transmission of rotational energy to the drill string is connected in the drill string or as the drive mechanism in a jar or accelerator (40) to prevent excessive torque loading of the drill string.
L'invention concerne un appareil amortisseur de couple (39), comprenant un mandrin (82), ainsi qu'un cylindre (8) pourvu d'organes absorbeurs de couple (8-12, 27), destinés à absorber une surcharge de couple tout en permettant la transmission de l'énergie de rotation à la colonne de forage. Le mandrin est relié à ladite colonne de forage pour prévenir une surcharge de couple sur celle-ci, tout en permettant au mécanisme d'entraînement d'une coulisse de forage ou d'un accélérateur de coulisse (40) de fonctionner.
Anderson Edwin A.
Riches Mckenzie & Herbert Llp
LandOfFree
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