System to measure vibrations using fiber optic sensors
US8708664B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2010 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Jul 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration monitoring system for an electrical submersible pump (ESP) that includes a fiber optic cable coupled with the ESP and an optical sensor coupled with the fiber optic cable. The optical sensor emits electromagnetic radiation into the fiber optic cable, some of which reflects back from optical discontinuities provided in the fiber optic cable. By receiving the reflected electromagnetic radiation, the optical sensor estimates the location of the optical discontinuities. Displacement and rate of displacement of the optical discontinuities can be estimated when the reflections are received over a period of time. Because the fiber optic cable, and the optical discontinuities, move with the ESP, displacement measurements of the optical discontinuities correlate to ESP movement, including ESP vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.