Cutter with polycrystalline diamond layer and conic section prof

Details Cutter with polycrystalline diamond layer and conic section prof Cutter with polycrystalline diamond layer and conic section prof

1997-02-20

2000-05-30

Schoeppel, Roger

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175434, E21B 1036

Patent

active

060680717

ABSTRACT:
Polycrystalline diamond cutter (PDC) designs which substantially improve the penetration rate of fixed cutter drill bits while simultaneously reducing the wear on the bit during drilling operations are disclosed. The designs are based upon the observation that: 1) the wear pattern of a PDC is roughly a conic section and is parallel to bit rotation, and 2) the cutting surface is perpendicular to the rotation of the bit. The inventive PDC designs provide cutting action both perpendicular and parallel to the direction of bit rotation.

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