Bottom hole drilling assembly

Details Bottom hole drilling assembly Bottom hole drilling assembly

E - Fixed Constructions

21

B

E21B 7/04 (2006.01) E21B 4/18 (2006.01) E21B 7/06 (2006.01) E21B 19/22 (2006.01) E21B 47/022 (2006.01)

Patent

CA 2136559

A bottom hole drilling assembly connectable to coiled tubing comprises a downhole motor to rotate a drill bit, an articulated sub for causing the drill bit to drill a curved bore hole when a second portion thereof is bent from coaxial orientation with a first portion, a steering tool for indicating the attitude of the bore hole, a thruster for providing force to advance the drill bit, and an orientating toot for rotating the thruster relative to the coiled tubing and thereby rotating the articulated sub so as to control the path of the bore hole.

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