Jack Element for a Drill Bit
First Claim
Patent Images
1. A drill bit, comprising:
- an axis of rotation and a working face comprising a plurality of blades extending outwardly from a bit body;
the blades forming in part an inverted conical region;
a cutter attached to the nose of at least one of the plurality of blades; and
a jack element coaxial with the axis of rotation and extending within the conical region within a range defined by the cutting surface of the cutter.
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Abstract
In one aspect of the present invention, a drill bit has an axis of rotation and a working face with a plurality of blades extending outwardly from a bit body. The blades form in part an inverted conical region, and a plurality of cutters with a cutting surface is arrayed along the blades. A jack element is coaxial with the axis of rotation and extends within the conical region within a range defined by the cutting surface of at least one cutter.
99 Citations
16 Claims
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1. A drill bit, comprising:
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an axis of rotation and a working face comprising a plurality of blades extending outwardly from a bit body; the blades forming in part an inverted conical region; a cutter attached to the nose of at least one of the plurality of blades; and a jack element coaxial with the axis of rotation and extending within the conical region within a range defined by the cutting surface of the cutter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A drill bit, comprising:
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an axis of rotation and a working face comprising a plurality of blades extending outwardly from a bit body; the blades forming in part an inverted conical region; a cutter comprising a cutting surface is attached to a nose of at least one of the blades; and wherein the jack element comprises the characteristic of reducing the torque required to rotate the drill bit while downhole and in operation.
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Specification