Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent
1987-02-09
1988-12-20
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Magnetized or with magnet
175410, E21B 1046
Patent
active
047920017
ABSTRACT:
A rotary drill bit is provided with a plurality of cutting elements having a front layer of abrasive particles, wherein the cutting elements located in the center region of the bit comprise a thicker abrasive front layer than those in the outer region of the bit. The bit design enables optimization of drilling characteristics.
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Neuder William P.
Novosad Stephen J.
Shell Oil Company
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