System and method for directionally drilling a borehole with...

Details System and method for directionally drilling a borehole with... System and method for directionally drilling a borehole with...

E - Fixed Constructions

21

B

E21B 7/06 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2694857

In certain aspects, side cutting of a sidewall of the borehole by a drill bit under an applied side force is controlled by a geostationary element to provide for directional side cutting and, as a result, directional drilling of the borehole through the earth formation. In other aspects, a non-concentrically coupled gauge pad assembly may rotate with the drilling system and bias or focus the applied side force.

Dans certains modes de réalisation, une coupe latérale d'une paroi latérale d'un puits de forage au moyen d'un trépan par application d'une force latérale est commandée par un élément géostationnaire pour assurer une coupe latérale directionnelle et, par suite, un forage directionnel du puits de forage à travers la formation géologique. Dans d'autres modes de réalisation, un ensemble jauge couplé de façon non concentrique peut tourner avec le système de forage et orienter ou concentrer la force latérale appliquée.

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