Steerable drilling system

Details Steerable drilling system Steerable drilling system

E - Fixed Constructions

21

B

E21B 7/04 (2006.01)

Patent

CA 2545765

A steerable drilling system comprises a bias unit 14 operable by means of a control valve arrangement 22, the control valve arrangement 22 comprising a rotary valve 24 having a control shaft 28 the angular position of which is controlled by a motor 30.

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