Asymmetrical PDC cutter

Details Asymmetrical PDC cutter Asymmetrical PDC cutter

1993-09-15

1995-01-24

Britts, Ramon S.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175432, E21B 1046

Patent

active

053835271

ABSTRACT:
A polycrystalline diamond compact (PDC) drag bit cutter is disclosed that provides more clearance between the cutter's drilling edge and the drag bit body mounting blade. This allows for more efficient hydraulic cooling and cleaning of the cutters, thereby achieving faster drilling rates. A cylindrical carbide cutter base end having an off-set asymmetric diamond cutting end provides for less interference of the bit head surfaces and the rock formation being drilled, thereby reducing detrimental heat and also allowing a greater depth of penetration of the cutter.

REFERENCES:
patent: 4200159 (1980-04-01), Peschel et al.
patent: 4679639 (1987-07-01), Barr et al.
patent: 4877096 (1989-10-01), Tibbitts
patent: 4942933 (1990-07-01), Barr et al.
patent: 4993505 (1991-02-01), Packer et al.
patent: 5007493 (1991-04-01), Coolidge et al.
patent: 5028177 (1991-07-01), Meskin et al.
patent: 5115873 (1992-05-01), Pastusek

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