Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate
2011-07-19
2011-07-19
Thompson, Kenneth (Department: 3676)
Boring or penetrating the earth
Processes
Boring curved or redirected bores
C175S073000
Reexamination Certificate
active
07980328
ABSTRACT:
The invention provides rotary steerable devices and methods for use of rotary steerable devices. One aspect of the invention provides a rotary steerable device including: a cylinder configured for rotation in a wellbore, the cylinder having a slot and a gauge; and at least one cam received in the slot. The cam is configured for selective actuation between a first position, wherein the cam lies within the gauge of the cylinder, and a second position, wherein the cam is displaced out of the gauge of the cylinder.
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Allias Laurent
Boualleg Riadh
Hallworth John
Hart Steve
Haugvaldstad Kjell
Echols Brigitte
Schlumberger Technology Corporation
Thompson Kenneth
Welch Jeremy
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