E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 44/00 (2006.01) E21B 47/00 (2006.01)
Patent
CA 2080483
A method for automatically monitoring the vibrational condition of a drill string fitted with detectors comprises the following steps: obtaining a reference spectrum for each detector; obtaining a spectrum for each detector representing the actual situation; comparing the two spectra to detect possible instabilities in the values measured by the detectors; indication of said instabilities by means of audio and/or visual devices.
Méthode de surveillance automatique de l'état vibratoire d'une garniture de forage pourvue de capteurs, ladite méthode com- portant les étapes suivantes: obtention d'un spectre de référence pour chacun des cap- teurs, obtention d'un spectre pur chacun des capteurs en situation réelle, comparai- son des deux spectres afin de détecter d'éventuelles instabilités au niveau des grandeurs mesurées par les capteurs, signalisation desdites instabilités au moyen de dispositifs auditifs et/ou visuels.
Elf Exploration Production
Robic
Societe Nationale Elf Aquitaine
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