Articles | Volume 14, issue 1
https://doi.org/10.5194/se-14-89-2023
https://doi.org/10.5194/se-14-89-2023
Research article
 | 
01 Feb 2023
Research article |  | 01 Feb 2023

Investigation of the effects of surrounding media on the distributed acoustic sensing of a helically wound fibre-optic cable with application to the New Afton deposit, British Columbia

Sepidehalsadat Hendi, Mostafa Gorjian, Gilles Bellefleur, Christopher D. Hawkes, and Don White

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Cited articles

Bellefleur, G., Schetselaar, E., Wade, D., White, D., Enkin, R., and Schmitt, D. R.: Vertical seismic profiling using distributed acoustic sensing (DAS) with scatter-enhanced fiber-optic cable at the Cu-Au New Afton porphyry deposit, British Columbia, Canada, Geophysical Prospecting, 68, 313–333, https://doi.org/10.1111/1365-2478.12828, 2020. 
Daley, T. M., Freifeld, B. M., Ajo-Franklin, J., Dou, S., Pevzner, R., Shulakova, V., Kashikar, S., Miller, D. E., Goetz, J., Henninges, J., and Lueth, S.: Field testing of fiber-optic distributed acoustic sensing (DAS) for subsurface seismic monitoring, The Leading Edge, 32, 699–706, 2013. 
Den Boer, J. J., Mateeva, A. A., Pearce, J. G., Mestayer, J. J., Birch, W., Lopez, J. L., Hornman, J. C., and Kuvshinov, B. N.: Shell Oil Co.: Detecting broadside acoustic signals with a fiber optical distributed acoustic sensing (DAS) assembly, U.S. Patent 9,766,119, 2017. 
Eaid, M., Li, J., and Innanen, K. A.: Modeling the response of shaped-DAS fibres to microseismic moment tensor sources, in: SEG Technical Program Expanded Abstracts 2018, Society of Exploration Geophysicist, 4698–4702, 2018. 
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In this study, the modelling results are used to help understand the performance of a helically wound fibre (HWC) from a field study at the New Afton mine, British Columbia. We introduce the numerical 3D model to model strain values in HWC to design more effective HWC system. The DAS dataset at New Afton, interpreted in the context of our modelling, serves as a practical demonstration of the extreme effects of surrounding media and coupling on HWC data quality.