E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/6
E21B 7/04 (2006.01)
Patent
CA 1251778
ABSTRACT The invention relates to a method of drilling a directional well bore with a drill string. According to the invention, at least a part of the trajectory of the well bore is drilled with a constant build rate so that said part has substantially a constant curvature shape.
499095
Anadrill International Sa
Smart & Biggar
LandOfFree
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