Directional drilling method for a steerable rotary drilling...

E - Fixed Constructions – 21 – B

Patent

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E21B 7/08 (2006.01) E21B 7/00 (2006.01) E21B 7/06 (2006.01)

Patent

CA 2474228

A method for orienting a rotary drilling system, the rotary drilling system being comprised of a rotatable drilling string, a drilling string communication system and a drilling direction control device, the drilling direction control device comprising a deflectable drilling shaft connected with the drilling string. The method includes the steps of communicating a desired orientation of the drilling string to the drilling direction control device and actuating the drilling direction control device to deflect the drilling shaft to reflect the desired orientation. Further, the method may include the steps of orienting the drilling string at a desired orientation and sensing the desired orientation of the drilling string with the drilling string communication system, which steps are performed prior to the communicating and actuating steps.

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