Steering systems for coiled tubing drilling

Details Steering systems for coiled tubing drilling Steering systems for coiled tubing drilling

E - Fixed Constructions

21

B

E21B 7/06 (2006.01) E21B 17/20 (2006.01)

Patent

CA 2651591

A technique provides a drilling system and method in which a drilling assembly (22) is delivered downhole on coiled tubing (24). The drilling assembly comprises a drill bit (30) and a motor (32) to rotate the drill bit for drilling of a borehole. A steerable system (28) is used to steer the drill bit, thereby enabling formation of deviated boreholes.

L'invention décrit une technique concernant un système de forage et un procédé dans lesquels un ensemble de forage (22) est amené au fond d'un puits sur un tube spiralé (24). L'ensemble de forage comprend un foret (30) et un moteur (32) pour faire pivoter le foret en vue de forer un trou de sondage. Un système orientable (28) est utilisé pour diriger le foret, permettant ainsi la formation de trous de sondage déviés.

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