Method and system for reverse circulation drilling

Details Method and system for reverse circulation drilling Method and system for reverse circulation drilling

E - Fixed Constructions

21

B

E21B 4/00 (2006.01)

Patent

CA 2518879

- La présente invention concerne une méthode et un système de forage en circulation comportant: - un outil de forage, - une garniture de forage comportant des tiges de forage, - des moyens de mise en rotation de l'outil par l'intermédiaire des tiges. Le système comporte une pompe volumétrique constituée d'un stator et d'un rotor, le stator étant incorporé audites tiges de forage, et le rotor est assemblé à des tiges de manoeuvre disposées à l'intérieur des tiges de forage.

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