Sensitivity requirements for fiber optic pressure and velocity sensors

Fred C. DeMetz Sr.

doi:10.1117/12.544378

20 November 2003 Sensitivity requirements for fiber optic pressure and velocity sensors

Fred C. DeMetz Sr.

Proceedings Volume 5278, Sixth Pacific Northwest Fiber Optic Sensor Workshop; (2003) https://doi.org/10.1117/12.544378
Event: Sixth Pacific Northwest Fiber Optic Sensor Workshop, 2003, Troutdale, OR, United States

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.

Citation Download Citation

Fred C. DeMetz Sr. "Sensitivity requirements for fiber optic pressure and velocity sensors", Proc. SPIE 5278, Sixth Pacific Northwest Fiber Optic Sensor Workshop, (20 November 2003); https://doi.org/10.1117/12.544378

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