Method and apparatus for determining drill string movement mode

E - Fixed Constructions – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

E21B 47/024 (2006.01) E21B 36/04 (2006.01) E21B 41/00 (2006.01) E21B 44/00 (2006.01) E21B 47/04 (2006.01)

Patent

CA 2482922

A method is disclosed for determining movement mode in a drill string (32). The method includes measuring lateral acceleration of the drill string, determining lateral position of the drill string from the acceleration measurements, and determining mode from the position with respect to time. Also disclosed is a method including measuring drill string acceleration along at least one direction, spectrally analyzing the acceleration, and determining existence of a particular mode from the spectral analysis. Also disclosed is a method for determining destructive torque on a BHA (42) including measuring angular acceleration at least at one location along the BHA, and comparing the acceleration to a selected threshold. The threshold relates to a moment of inertia of components of the BHA and a maximum torque applicable to threaded connections between BHA components. A warning is generated when acceleration exceeds the threshold.

L'invention concerne un procédé de détermination d'un mode de mouvement dans un train de tiges (32). Ledit procédé comprend la mesure de l'accélération latérale dudit train de tiges, la détermination de la position latérale du train de tiges par rapport à des mesures d'accélération, et la détermination du mode de la position par rapport au temps. L'invention concerne également un procédé comprenant la mesure de l'accélération du train de tiges dans au moins une direction, l'analyse spectrale de l'accélération et la détermination de l'existence d'un mode particulier à partir de l'analyse spectrale. L'invention concerne également un procédé de détermination du couple destructeur sur un fond du sondage (42), comprenant la mesure de l'accélération angulaire d'au moins un emplacement le long du fond du sondage et la comparaison de l'accélération et d'un seuil sélectionné. Ledit seuil concerne le moment d'inertie des composants du fond du sondage et un couple maximum applicable à des liaisons filetées entre les composants du fond du sondage. Un signal d'alerte est produit lorsque l'accélération dépasse le seuil.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for determining drill string movement mode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining drill string movement mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining drill string movement mode will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1376704

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.