Drilling system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 4/18 (2006.01) E21B 44/00 (2006.01) E21B 44/02 (2006.01)

Patent

CA 2618236

A drilling system for drilling a borehole in an underground formation, comprises a rotary drill bit, a drilling drive mechanism that is capable of applying both rotating the drill bit and applying an axial force to the drill bit, and a control system that is capable of controlling the drive mechanism so as to control rotation of the drill bit and the axial force applied to the drill bit in order to control the depth of cut created by the drill bit when drilling through the formation. A method of drilling a borehole in an underground formation with a rotary drill bit, comprises applying rotation and an axial force to the drill bit and controlling the rotation and axial force so as to control the depth of cut created by the drill bit when drilling through the formation.

L'invention concerne un système de forage permettant de forer un puits dans une formation souterraine, qui comprend un trépan rotatif, un mécanisme d'entraînement de forage capable d'appliquer à la fois une rotation et une force axiale sur le trépan, et un système de commande capable de commander le mécanisme d'entraînement afin de commander l'application de la rotation et de la force axiale sur le trépan à des fins de contrôle de la profondeur de coupe créée par ledit trépan lorsqu'il fore la formation. L'invention concerne également un procédé de forage de puits dans une formation souterraine à l'aide d'un trépan, qui consiste à appliquer une rotation et une force axiale sur ledit trépan et à commander la rotation et la force axiale afin de contrôler la profondeur de coupe créée par le trépan lorsqu'il fore la formation.

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