Drill string member with bearings

Details Drill string member with bearings Drill string member with bearings

E - Fixed Constructions

21

B

E21B 17/10 (2006.01)

Patent

CA 2385443

A drill string member comprising a body (1), and bearing races (5) around the circumference of the member. In certain embodiment, the presence of spherical bearings (25) on the surface of the member reduces radial torque and vertical drag to enable easier operation of the drill string. Advantages of one embodiment includes a reduction in the wear or breakages of the components used in drilling.

L'invention concerne une colonne de forage comprenant un corps, et des chemins de roulement autour de la circonférence de la colonne. Dans certains modes de réalisation, le présence de roulements sphériques sur la surface de la colonne réduit le couple de rotation et la résistance verticale, permettant un fonctionnement plus facile de la colonne de forage. Parmi les avantages d'un mode de réalisation figurent la réduction de l'usure ou des cassures des composants utilisés lors du forage.

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