High sensitivity fiber laser geophone array and field test analysis |
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| Affiliation: | 1. Shandong Province Key Laboratory of Optical Fiber Sensing Technology, Laser Institute of Shandong Academy of Sciences, Jinan 250014, China;2. Shengli Oilfield Geophysical Exploration and Development Company of SINOPEC, Dongying 257100, China;3. Photonics & Optical Communications Group, School of Electrical Engineering & Telecommunications, The University of New South Wales, Sydney 2052, Australia;1. Computer Science Research and Application Center, Yüzüncü Y?l University, Van 65080, Turkey;2. Department of Computer Engineering, ?nönü University, Malatya 44280, Turkey;1. University of Udine, Dept. of Electrical, Management and Mechanical Engineering, Via delle Scienze 208, 33100 Udine, Italy;2. University of Parma, Dept. of Information Engineering, Via delle Scienze 181a, 43100 Parma, Italy |
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| Abstract: | In this paper we report the development and field test analysis of a high sensitivity fiber laser geophone array. The fiber laser geophone array, as well as a moving-coil geophone array for comparison purpose, is field tested using the downhole explosion method at different points of the array at Shengli oilfield, Shandong, China. The detailed information of the acquired seismic signals, e.g. waveform, frequency spectrum, and noise is analyzed for assessing the performance of the fiber laser geophone array. Single channel contrast, gather contrast and stack section contrast are analyzed between the fiber laser geophone and moving-coil geophone. In comparison the moving coil geophone, fiber laser geophones have the advantages of high sensitivity, wide bandwidth, and good high-frequency response. This work shows that using fiber laser technology to develop geophone for micro-seismic data acquisition system is both advantageous and feasible. |
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| Keywords: | DFB fiber laser Fiber laser geophone Micro-seismic monitoring Field test |
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