E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/60 (2006.01) E21B 17/10 (2006.01)
Patent
CA 2741617
The present invention provides self-stabilized and anti-whirl drill bits (105) and bottom-hole assemblies and systems for using the same. One embodiment of the invention provides a drill bit including an interior cavity in fluid communication with a drill string, and a plurality of gauge pads (206a) located on the exterior of the drill bit. One or more of the gauge pads include an orifice (212) in communication with the interior cavity. The drill bit is configured such that a fluid continuously flows from each of the orifices.
La présente invention porte sur des trépans auto-stabilisés et anti-tourbillonnement (105), sur des ensembles de fond de trou et sur des systèmes pour leur utilisation. Un mode de réalisation de l'invention porte sur un trépan comprenant une cavité intérieure en communication de fluide avec un train de tiges de forage, et une pluralité de plaquettes de calibrage (206a) situées à l'extérieur du trépan. Une ou plusieurs des plaquettes de calibrage comprennent un orifice (212) en communication avec la cavité intérieure. Le trépan est configuré de telle sorte qu'un fluide s'écoule de façon continue à partir de chacun des orifices.
Boualleg Riadh
Hart Steven
Haugvaldstad Kjell
Lacour Bertrand
Sindt Olivier
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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