Downhole Hammer Assembly
First Claim
1. A drill bit assembly, comprising;
- a bit body intermediate a shank and a working face;
the shank being adapted for connection to a drill string;
the drill string comprising a fluid passage at least partially disposed within the body;
a hammer assembly movably disposed within the fluid passage along it central axis;
the hammer assembly comprises a distal end protruding out of the working face and a carrier; and
the hammer assembly further comprises a biasing element adapted to urge the distal end of the hammer assembly towards the shank.
3 Assignments
0 Petitions
Accused Products
Abstract
A drill bit assembly comprises a bit body intermediate a shank and a working face. The shank is adapted for connection to a drill string. The drill string comprising a fluid passage at least partially disposed within the body. A hammer assembly is movably disposed within the fluid passage along it central axis, the hammer assembly comprises a proximal end stabilized by a centralized upper bearing and a distal end stabilized by centralized a lower bearing. The distal end protrudes out of the working face and the hammer assembly comprises a carrier between the upper and lower bearings. Wherein, under normal drilling operations the carrier is adapted to resist a fluid pressure within the fluid passageway such that the fluid pressure will further extend the distal end of the hammer assembly from the working face by pushing on the carrier.
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Citations
20 Claims
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1. A drill bit assembly, comprising;
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a bit body intermediate a shank and a working face; the shank being adapted for connection to a drill string; the drill string comprising a fluid passage at least partially disposed within the body; a hammer assembly movably disposed within the fluid passage along it central axis; the hammer assembly comprises a distal end protruding out of the working face and a carrier; and the hammer assembly further comprises a biasing element adapted to urge the distal end of the hammer assembly towards the shank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification