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Proceedings Paper

Performance comparison of fiber laser geophones and moving-coil geophones
Author(s): Xuebing Wu; Faxiang Zhang; Xiaolei Zhang; Shujuan Li
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Paper Abstract

This paper reports laboratory comparison of fiber laser geophones and moving-coil geophones. A fiber laser geophone and a 20 DX geophone geophone were tested. The fiber laser geophone is based on a L shape beam structure and demodulated with an interferometric method. The signal of the moving-coil geophone is measured by a 24-Bit DAQ. Typical features of geophones include sensitivity, frequency response, spurious frequency, dynamic range, damp and noise character were compared. The results show that the fiber laser geophone has comparable performances with moving-coil geophone, and exhibits very high sensitivity and better high-frequency signal to noise ratio than moving-coil geophone. The fiber laser geophone is expect to be applied in micro-seismic monitoring of unconventional oil and gas hydraulic fracturing.

Paper Details

Date Published: 3 December 2014
PDF: 5 pages
Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 929736 (3 December 2014); doi: 10.1117/12.2073203
Show Author Affiliations
Xuebing Wu, Sinopec Geophysical Corp. (China)
Institute of Acoustics (China)
Faxiang Zhang, Shandong Academy of Sciences (China)
Xiaolei Zhang, Shandong Academy of Sciences (China)
Shujuan Li, Shandong Academy of Sciences (China)


Published in SPIE Proceedings Vol. 9297:
International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors
Jurgen Czarske; Shulian Zhang; David Sampson; Wei Wang; Yanbiao Liao, Editor(s)

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