Dynamic vibrational control

E - Fixed Constructions – 21 – B

Patent

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E21B 41/00 (2006.01) E21B 10/08 (2006.01) E21B 44/00 (2006.01)

Patent

CA 2582200

A method for reducing vibration of a drilling tool assembly is disclosed. The method includes modeling the drilling tool assembly based on input parameters, simulating a vibration of a drill string coupled with a vibration of a drill bit, determining an initial total vibration from output parameters generated by the simulation, determining a location for at least one vibrational control device based on the initial total vibration to reduce the initial total vibration, and disposing the at least one vibrational control device on the drill string at the determined location.

Un procédé pour réduire les vibrations d'un ensemble outil de forage. Le procédé consiste à modéliser l'ensemble outil de forage selon des paramètres d'entrée, à simuler une vibration d'un train de tiges de forage couplé avec une vibration d'un trépan, à déterminer une vibration totale initiale à partir des paramètres de sortie générés par la simulation, à déterminer un emplacement pour au moins un dispositif de commande de vibration selon la vibration totale initiale pour réduire la vibration totale initiale, et à disposer au moins un dispositif de commande de vibration sur le train de tiges de forage à l'emplacement déterminé.

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