Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate
2007-03-13
2007-03-13
Gay, Jennifer H. (Department: 3672)
Boring or penetrating the earth
Processes
Boring curved or redirected bores
C175S076000, C175S107000, C175S104000
Reexamination Certificate
active
10248053
ABSTRACT:
A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.
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Downton Geoff
Hart Steven James
Rowatt John David
Abrell Matthias
Echols Brigitte L.
Gandier Dale V.
Gay Jennifer H.
Schlumberge Technology Corporation
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