A holding device insertable into the central bore of a...

E - Fixed Constructions – 21 – B

Patent

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E21B 17/02 (2006.01)

Patent

CA 2760739

A holding device (13) insertable into the central bore of a drill string component, the central bore having a first diameter along at least part of a central portion of the drill string component and a second diameter proximate the ends of the drill string component. The second diameter is lower than the first diameter. The holding device (13) includes an elongated body (14) forming at least partly a housing for a transmission line. Said elongated body (14) has transversal dimensions lower than the second diameter. A plurality of arcuate elements (15) are arranged along the elongated body (14) and distinct from and attached to the elongated body. The arcuate elements (15) are elastically bendable so as to be able to move through the second diameter and have a largest chord greater than the first diameter in a free state so as to be able to expand within the first diameter once past the second diameter.

L'invention concerne un dispositif de retenue (13) insérable dans l'orifice central d'un composant de train de tiges, l'orifice central étant doté d'un premier diamètre le long d'au moins une partie d'une partie centrale du composant de train de tiges et d'un second diamètre à proximité des extrémités du composant de train de tiges. Le second diamètre est inférieur au premier diamètre. Le dispositif de retenue (13) comprend un corps allongé (14) formant au moins partiellement un logement pour une conduite de transmission. Ledit corps allongé (14) comprend des dimensions transversales inférieures au second diamètre. Une pluralité d'éléments arqués (15) est agencée le long du corps allongé (14) et est distincte du corps allongé et fixée à celui-ci. Les éléments arqués (15) peuvent être élastiquement pliables de façon à pouvoir se déplacer à travers le second diamètre et avoir une corde plus large que le premier diamètre à l'état libre afin de pouvoir s'étendre à l'intérieur du premier diamètre une fois passé le second diamètre.

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