E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 25/00 (2006.01) E21B 25/02 (2006.01)
Patent
CA 2381477
The present invention relates to a locking device (4) for a wire line core drilling system comprising an inner tube (2) by means of which core samples are collected, and an outer tube (1) connected to a drill bit, which locking device is applied in the rear end of the inner tube. The locking device (4) comprises locking members (7, 9) so designed that, when the inner tube has been inserted into the outer tube and has assumed the correct position inside the outer tube for drilling, in one and the same movement it simultaneously effects mechanical locking of the inner tube (2) in relation to the outer tube (1) and release of a gripping means (10; 25) of an accompanying device (5; 26) connected to the inner tube.
La présente invention concerne un dispositif (4) de verrouillage destiné à un système de forage-carottage à câble métallique, qui comprend un tube intérieur (2) par lequel les carottes sont recueillies et un tube extérieur (1) connecté à un trépan, ce dispositif de verrouillage étant placé sur la partie arrière du tube intérieur. Ce dispositif (4) de verrouillage comprend des éléments de verrouillage (7, 9) conçus de façon que, lorsque le tube intérieur a été introduit dans le tube extérieur et qu'il est correctement positionné dans ce dernier pour assurer le forage, ce dispositif effectue simultanément et en un seul et même mouvement, un verrouillage mécanique du tube intérieur (2) par rapport au tube extérieur (1), tout en libérant un organe de préhension (10, 25) d'un dispositif accompagnateur (5, 26) connecté au tube intérieur.
Atlas Copco Craelius Ab
Gowling Lafleur Henderson Llp
LandOfFree
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