Direction control in well drilling

Details Direction control in well drilling Direction control in well drilling

E - Fixed Constructions

21

B

E21B 7/06 (2006.01) E21B 47/024 (2006.01)

Patent

CA 2387976

A bottom hole assembly for drilling a well, comprising a non-magnetic tubing, an orienter, a motor, a bit fed with drilling fluid which passes through the non-- magnetic tubing, and a sensor package contained within the non-magnetic tubing, characterized by a drilling fluid flow tube passing through the non-magnetic tubing adjacent to the sensor package, and means for determining the relative position measurement between the non-magnetic tubing and the motor.

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