E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/00 (2006.01) E21B 17/20 (2006.01) E21B 47/01 (2006.01) E21B 47/12 (2006.01)
Patent
CA 2755094
An assembly is provided for drilling a wellbore which comprises a composite coiled tubing and a drilling assembly including a bit and a downhole electric motor powered from the surface. An apparatus is also provided for controlling the drilling direction, which includes means for lowering a drilling assembly and steering assembly into a borehole on composite coiled tubing having a tubular wall with one or more conductors embedded therein. The steering assembly includes a body having a nose connected thereto by a jointed connection, the body and nose each having an axis. The apparatus further includes means for drilling the borehole by rotating and applying a load to the bit, means for communicating a signal through one of the conductors to change drilling direction and means for adjusting the nose axis with respect to the body axis at the jointed connection while drilling in order to change the angle and azimuth of the bit and thus the direction of drilling.
Eppink Jay M.
Estep James W.
Odell Albert C. II
Song Haoshi
Terry James B.
Emery Jamieson Llp
Halliburton Energy Services Inc.
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