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Optical Engineering

Fiber-Bragg-grating-based seismic geophone for oil/gas prospecting
Author(s): Yan Zhang; Sanguo Li; Zhifan Yin; Bingquan Chen; Hong-Liang Cui; Jing Ning
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Paper Abstract

A new type of fiber Bragg grating (FBG) sensor–based seismic geophone is presented. The major application of this FBG geophone is in the seismic reflection survey of oilfield exploration to detect the seismic waves from the Earth. The customized FBG geophone prototype that is demonstrated consists of two FBG sensor/demodulation grating pairs attached on a spring-mass mechanical system. The sensor performance is characterized in the laboratory in comparison with the conventional geophone. The FBG sensor is resistant to electromagnetic interference and has higher frequency response bandwidth and sensitivity than a conventional moving-coil electromagnetic geophone. The field tests results taken in the oil field show the sensor system frequency response bandwidth at 10 to 100 Hz in Shallow layer and 10 to 140 Hz in medium and deep layer separately.

Paper Details

Date Published: 1 August 2006
PDF: 4 pages
Opt. Eng. 45(8) 084404 doi: 10.1117/1.2337631
Published in: Optical Engineering Volume 45, Issue 8
Show Author Affiliations
Yan Zhang, Stevens Institute of Technology (United States)
Sanguo Li, Stevens Institute of Technology (United States)
Zhifan Yin, Stevens Institute of Technology (United States)
Bingquan Chen, Stevens Institute of Technology (United States)
Hong-Liang Cui, Stevens Institute of Technology (United States)
Jing Ning, Shengli Geophysics Corp. (China)

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