Boring or penetrating the earth – With signaling – indicating – testing or measuring
Reexamination Certificate
2011-06-07
2011-06-07
Bagnell, David J (Department: 3672)
Boring or penetrating the earth
With signaling, indicating, testing or measuring
C175S320000, C175S045000
Reexamination Certificate
active
07954559
ABSTRACT:
A method of drilling a well includes at least one drill bit and at least one secondary cutting structure. The method includes determining a neutral point of a drill string, positioning at least one secondary cutting structure based on the neutral point of the drill string, and drilling an earth formation.
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Bagnell David J
Loikith Catherine
Osha • Liang LLP
Smith International Inc.
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