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Proceedings Paper

Sensitivity requirements for fiber optic pressure and velocity sensors
Author(s): Fred C. DeMetz
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Paper Abstract

Optical dynamic pressure and velocity sensors are under development for oil exploration and reservoir monitoring. The abilities of these sensors to operate in high temperature and static pressure environments, without nearby electronics, offers the potential for enhanced reliability with significant reduction in life-cycle costs. To aid in the design of these sensors, the minimum sensitivity requirements are derived in terms of the minimum detectable signals by the signal conditioning equipment and background noise levels in their operating environments. These requirements are compared with the performance achieved with commercially available electronic sensors. The results indicate that conventional moving coil geophones may have serious limitations in performing wide frequency-bandwidth measurements of seismic wave particle velocity in typical borehole noise environments. Accelerometer response, on the other hand, increases linearly with frequency, and consequently the useful bandwidth of an accelerometer generally exceeds that of the geophone.

Paper Details

Date Published: 20 November 2003
PDF: 10 pages
Proc. SPIE 5278, Sixth Pacific Northwest Fiber Optic Sensor Workshop, (20 November 2003); doi: 10.1117/12.544378
Show Author Affiliations
Fred C. DeMetz, Sound Path Technologies, LLC (United States)

Published in SPIE Proceedings Vol. 5278:
Sixth Pacific Northwest Fiber Optic Sensor Workshop
Eric Udd; Stephen T. Kreger; Jeff Bush, Editor(s)

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