Closed loop drilling system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 44/00 (2006.01) E21B 7/06 (2006.01) E21B 47/00 (2006.01) E21B 47/18 (2006.01)

Patent

CA 2235134

The present invention provides a closed-loop drilling system for drilling oilfield boreholes. The system includes a drilling assembly with a drill bit, a plurality of sensors for providing signals relating to parameters relating to the driling assembly, borehole, and formations around the drilling assembly. Processors in the drilling system process sensors signal and compute drilling parameters based on models and programmed instructions provided to the drilling system that will yield further drilling at enhanced drilling rates and with extended drilling assembly life. The drilling system then automatically adjusts the drilling parameters for continued drilling. The system continually or periodically repeats this process during the drilling operations. The drilling system also provides severity of certain dysfunctions to the operator and a means for simulating the drilling assembly behavior prior to effecting changes in the drilling parameters.

L'invention concerne un système de forage à boucle fermée destiné au forage de puits de champs pétroliers. Le système comprend un ensemble de forage doté d'un trépan, d'une pluralité de détecteurs destinés à fournir des signaux relatifs aux paramètres concernant l'ensemble de forage, le puits, et des formations situées autour de l'ensemble de forage. Des processeurs du système de forage traitent un signal provenant de détecteurs et calculent des paramètres de forage sur la base de modèles et d'instructions programmés transmis au système de forage permettant de forer davantage à des vitesses de forage accrues et avec une durée de vie prolongée de l'ensemble de forage. Le système de forage règle alors automatiquement les paramètres de forage pour un forage continu. Le système renouvelle de façon continue ou périodique ce traitement pendant les opérations de forage. Le système de forage informe également l'opérateur de la gravité de certains dysfonctionnements et constitue un moyen de simulation du comportement de l'ensemble deforage avant de procéder à des changements dans les paramètres de forage.

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