E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/04 (2006.01)
Patent
CA 2590309
The present invention relates to a rotary steerable drilling apparatus which separates the drill string from the bottom hole assembly thereby allowing the biasing means to push the bit in a given direction without having to lift the drill string along with the bottom hole assembly.
Downton Geoff
Smith David L.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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