Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate
2008-07-15
2008-07-15
Neuder, William (Department: 3672)
Boring or penetrating the earth
Processes
Boring with specific fluid
C175S054000, C175S424000, C175S206000, C175S207000, C210S403000
Reexamination Certificate
active
07398839
ABSTRACT:
A system and method for excavating a subterranean formation, according to which a slurry of liquid and a plurality of impactors are introduced into at least one cavity formed in a body member and are discharged from the cavity so that the impactors remove a portion of the formation. The impactors are separated from at least a portion of the fluid and the materials removed from the formation, so that the impactors can be reused.
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Curlett Harry B.
Curlett Samuel R.
Harder Nathan J.
Padgett Paul O.
Bracewell & Giuliani LLP
Coy Nicole
Neuder William
Particle Drilling Technologies, Inc.
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