Rockbit with attachable device for improved cone cleaning

Details Rockbit with attachable device for improved cone cleaning Rockbit with attachable device for improved cone cleaning

E - Fixed Constructions

21

B

E21B 10/18 (2006.01)

Patent

CA 2378534

A rolling cone rock bit having one or more nozzle retention bodies attached by a single orientation mounting is disclosed, as is the associated method for its manufacture. The upper end of the nozzle retention body has a fluid inlet in communication with the internal fluid plenum of the drill bit, and the lower end of the nozzle retention body includes a fluid outlet that defines an exit flow angle. The fluid outlet is located between two rolling cones, but is positioned closer to one of the cones than the other. Further, the exit flow angle is preferably within 3 degrees of parallel to the drill bit longitudinal axis and, even more preferably, is parallel with the drill bit longitudinal axis.

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