Automatic method for monitoring the vibrational state of a drill string
US5273122A · kind A · utility
6Cited by
6References
6Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 20, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Nov 20, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.