1887

Abstract

Summary

We assume two DAS cable geometries of 300 recording channels that replicate the Oseberg PRM (seafloor array) and a deviated well (akin to that used in hydraulic fracturing). We calculate the longitudinal strain at each channel, subject to the amplitude relationships described by , for P-waves and a coupled-cable to-medium case. The DAS cable’s sensitivity across the medium is investigated for differing wrapping angles of helical fibre. We then test how a 3D event location performs in these scenarios and create probability density estimates of the mislocations. These findings and the future implications for DAS as a viable microseismic monitoring technique are then discussed.

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/content/papers/10.3997/2214-4609.201800065
2018-03-26
2024-04-20
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References

  1. Botev, Z.I., Grotowski, J.F., and Kroese, D.P.
    , 2010, Kernel density estimation via diffusion: Annals of Statistics, v. 38, p. 2916–2957, doi: 10.1214/10‑AOS799.
    https://doi.org/10.1214/10-AOS799 [Google Scholar]
  2. Hartog, A., Kotov, O., and Liokumovich, L.
    , 2013, The Optics of Distributed Vibration Sensing, in Second EAGE Workshop on Permanent Reservoir Monitoring, Extended Abstracts, v. 6, p. 2–5.
    [Google Scholar]
  3. Kuvshinov, B.N.
    , 2016, Interaction of helically wound fibre-optic cables with plane seismic waves: Geophysical Prospecting, v. 64, p. 671–688, doi: 10.1111/1365‑2478.12303.
    https://doi.org/10.1111/1365-2478.12303 [Google Scholar]
  4. Madsen, K., N., Parker, T., and Gaston, G.
    , 2012, A VSP Field Trial Using Distributed Acoustic Sensing in a Producing Well in the North Sea, in 74th EAGE Conference & Exhibition, p. 4–7.
    [Google Scholar]
  5. Parker, T., Shatalin, S., and Farhadiroushan, M.
    , 2014, Distributed Acoustic Sensing - A new tool for seismic applications: First Break, v. 32, p. 61–69, doi: 10.3997/1365‑2397.2013034.
    https://doi.org/10.3997/1365-2397.2013034 [Google Scholar]
  6. Webster, P., Wall, J., Perkins, C., and Molenaar, M.
    , 2013, Micro-Seismic Detection Using Distributed Acoustic Sensing: 2013 SEG Annual Meeting, p. 2459–2463.
    [Google Scholar]
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