Device for steering a drill bit

Details Device for steering a drill bit Device for steering a drill bit

E - Fixed Constructions

21

B

255/6

E21B 17/00 (2006.01) E21B 7/06 (2006.01) E21B 21/10 (2006.01) E21B 34/06 (2006.01) E21B 47/01 (2006.01)

Patent

CA 2011972

ABSTRACT In a device for steering a drill bit the flushing fluid is caused to move pistons radially by a control device which is actuated by signals from a sensor which senses deviations of the drill bit. The control means is powered by an electric generator which is turned by turning the drill string.

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