Drill bits and tools for subterranean drilling
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United States of America Patent
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Nov 23, 2010
Issued Date -
N/A
app pub date -
Oct 29, 2008
filing date -
Oct 29, 2007
priority date (Note) -
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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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