E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01) A61L 2/10 (2006.01) E21B 7/04 (2006.01)
Patent
CA 2539668
A steerable drilling system comprises a bias unit 10, the bias unit 10 having at least one actuator 14 operable by pressurised drilling fluid or mud, in use, and a separator 20 arranged to remove particulate matter from the supply of pressurised drilling fluid or mud to the or each actuator 14, the separator 20 comprising a hydrocyclone 20.
Menger Christian
Richards Edward
Smith David L.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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