Method for determining the rotational speed of a drill bit

Details Method for determining the rotational speed of a drill bit Method for determining the rotational speed of a drill bit

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) G01L 3/00 (2006.01) G01P 3/44 (2006.01) G01P 7/00 (2006.01)

Patent

CA 2072139

rocedure to determine the rotation speed of a drilling tool (16), with the tool being attached to the end of a rotating surface (20). According to the invention, the procedure comprises the following stages: measure the axial acceleration at one point on the surface, process this measurement to determine the energy content of the acceleration, apply a correction to this energy value in order to determine the rotation speed.

Procédé de détermination de la vitesse de rotation d'un outil de forage (16), l'outil étant disposé à une extrémité d'une garniture (20) mise en rotation. Selon l'invention le procédé comporte les étapes suivantes: mesure de l'accélération axiale en un point de la garniture, traitement de cette mesure pour déterminer le contenu énergétique de l'accélération, application à cette valeur énergétique d'une correction pour déterminer ainsi la vitesse de rotation.

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