Boring or penetrating the earth – Processes
Reexamination Certificate
2005-02-01
2005-02-01
Neuder, William (Department: 3672)
Boring or penetrating the earth
Processes
C175S340000, C175S393000, C175S428000
Reexamination Certificate
active
06848517
ABSTRACT:
A drill bit nozzle providing a through bore for the passage of drilling fluid through a drill bit. The nozzle is made of a material or materials which can be drilled through by standard well bore drilling equipment. The material(s) are selected to provide a surface to the through bore which has a relatively high resistance to erosion to withstand the abrasive and corrosive impact of jetted drilling fluid. Embodiments are described using a hard chrome/copper combination and a single rubber material.
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Moser Patterson & Sheridan
Neuder William
Weatherford / Lamb, Inc.
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