Granular particle gripping surface

Details Granular particle gripping surface Granular particle gripping surface

B - Operations, Transporting

25

B

B25B 13/50 (2006.01) B25B 1/24 (2006.01) B25B 13/52 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2266367

This invention provides an improved apparatus for gripping oil field tubular members (10). The apparatus has a gripping surface (53) which comprises a backing surface (5) adapted to contact an oil field tubular member (10) where the backing surface (5) is attachable to the apparatus for gripping oil field tubular members (10). The apparatus further has a granulated particle coating (7) formed on this baking surface (5). In a preferred embodiment, the gripping surface (4) will include a refractory metal carbide selected from the group consisting of the carbides of silicon, tungsten, molybdenum, chromium, tantalum, niobium, vanadium, titanium, zirconium, and boron.

L'invention concerne un appareil amélioré destiné à la préhension d'éléments tubulaires (10) de champs pétrolifères. Ledit appareil comporte un élément superficiel de préhension (53) qui comprend un élément superficiel de support (5) conçu pour venir en contact avec un élément tubulaire (10) de champ pétrolifère, cet élément superficiel de support (5) pouvant être fixé à l'appareil destiné à la préhension d'éléments tubulaires (10) de champs pétrolifères. Ledit appareil comporte en outre un revêtement de particules granuleuses (7) formées sur ledit élément superficiel de support (5). Dans un mode de réalisation préféré, la surface de préhension (4) comprend un carbure de métal réfractaire sélectionné dans le groupe constitué des carbures de silicium, de tungstène, de molybdène, de chrome, de tantale, de niobium, de vanadium, de titane, de zirconium, et de bore.

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