Drill bits and tools for subterranean drilling

Details Drill bits and tools for subterranean drilling Drill bits and tools for subterranean drilling

2008-10-29

2010-11-23

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S431000

Reexamination Certificate

active

07836979

ABSTRACT:
A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.

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