Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1993-09-20
1995-01-10
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
175434, 51307, 761084, E21B 1046
Patent
active
053798538
ABSTRACT:
A unitized polycrystalline composite diamond stud type drag bit cutter having no high temperature braze of a PDC wafer to a carbide stud is disclosed. The diamond cutting surface may be planar, convex, curved or a truncated cone. The unitized construction of the cutter eliminates the problems associated with the high temperature brazing of a PDC wafer to a carbide stud.
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Crockett Ronald B.
Dixon Richard H.
Jones Kenneth W.
Lockwood Michael C.
Reed Christopher A.
Novosad Stephen J.
Smith International Inc.
Upton Robert G.
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