Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover
Reexamination Certificate
2008-07-29
2008-07-29
Neuder, William P (Department: 3672)
Boring or penetrating the earth
Automatic control
Of boring means including a below-ground drive prime mover
C175S045000, C175S061000, C175S073000
Reexamination Certificate
active
07404454
ABSTRACT:
A system for selectively orienting a bit at the end of a drillstring in a wellbore, the system, in certain aspects, having: motive apparatus for rotating a drillstring and a bit connected to an end of the drillstring; a control member manually movable to effect a change in orientation of the bit; a control system in communication with the motive apparatus and the control member for translating a signal from the control member indicative of manual movement of the control member into a command to the motive apparatus, the command commanding the motive apparatus to rotate the drillstring and the bit in correspondence to the movement of the control member.
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Neuder William P
Varco I/P Inc.
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