Drill string component, wear protection component and cutter...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/10 (2006.01) E21B 17/18 (2006.01) E21B 21/12 (2006.01)

Patent

CA 2553606

The present invention relates to a drill string component for use in a rock drilling process, wherein the drilling is performed by a drill tool connected to a drill string including plural drill string components. The drill string component comprises an outer casing and a channel for evacuating drill cuttings from a rock cutting surface. The channel is constituted by a first tubular member and at least one portion of the first tubular member, which in operation is subjected to wear from drill cuttings is, or is provided with, a replaceable wear protection component. The invention also relates to a wear protection component and a cutter head.

La présente invention concerne un composant de train de tiges destiné à être utilisé dans un processus de forage de roches, le forage étant réalisé par un outil de forage relié à un train de tiges comportant une pluralité de composants de train de tiges. Ce composant de train de tiges comporte une enveloppe extérieure et un canal pour évacuer les sciures de forage provenant d'une surface forée. Le canal est constitué d'un premier élément tubulaire. Au moins une partie du premier élément tubulaire, qui lors de l'opération de forage est exposée à l'usure par les sciures de forage, est constituée ou équipée d'un composant de protection contre l'usure remplaçable. L'invention concerne également un composant de protection contre l'usure et une tête de forage.

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