Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides
Reexamination Certificate
2011-01-11
2011-01-11
Wright, Giovanna C (Department: 3672)
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Axially spaced opposed bore wall engaging guides
C175S061000, C175S073000
Reexamination Certificate
active
07866415
ABSTRACT:
An exemplary device carried on a rotating drill string includes an actuator that moves force application members and an associated controller. The force application members are actuated by an eccentricity between a force application members housing and the actuator. The controller synchronizes the extension of the force application members with the rotation of the drill string such that a steering force applied by the force application members is applied in the same azimuthal direction. The controller may also control magnitude of the steering force by adjusting the eccentricity. Another exemplary device maintains a wellbore device, such as a sensor, in a substantially non-rotating condition relative to a reference frame. The device includes a sensor conveyed by a rotating wellbore tubular, a drive configured to rotate the sensor; and a processor that controls the drive to maintain the sensor in a substantially non-rotating condition relative to the reference frame.
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Baker Hughes Incorporated
Cantor & Colburn LLP
Wright Giovanna C
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