Bearing assembly inner barrel and well drilling equipment...

Details Bearing assembly inner barrel and well drilling equipment... Bearing assembly inner barrel and well drilling equipment...

E - Fixed Constructions

21

B

E21B 33/03 (2006.01)

Patent

CA 2697667

A well drilling head comprises a housing having a sidewall structure defining a central bore and a bearing assembly removably seated within the central bore of the housing. The bearing assembly includes an outer barrel having a central bore, an inner barrel at least partially disposed within the central bore of the outer barrel and bearing units coupled between the barrels for providing concentric alignment of the barrels and allowing rotation therebetween. The inner barrel includes a central bore and a plurality of cooling structures protruding from a surface thereof within the central bore.

L'invention porte sur une tête de forage de puits qui comprend un boîtier comprenant une structure de paroi latérale définissant un alésage central et un ensemble de paliers reçu de façon amovible à l'intérieur de l'alésage central du boîtier. L'ensemble de paliers comprend un cylindre externe comportant un alésage central, un cylindre interne disposé au moins partiellement à l'intérieur de l'alésage central du cylindre externe et des unités de palier couplées entre les cylindres pour produire un alignement concentrique des cylindres et permettre une rotation entre ceux-ci. Le cylindre interne comprend un alésage central et une pluralité de structures de refroidissement faisant saillie à partir d'une surface de celui-ci à l'intérieur de l'alésage central.

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