1887

Abstract

Summary

Systematic discrepancies in estimated focal depth estimates have been noted for induced seismicity monitoring using either surface broadband sensors or microseismic monitoring arrays. This report considers two possible sources of such discrepancies, namely dispersion associated with seismic attenuation and velocity model uncertainty. Synthetic modeling shows that while attenuation causes some changes in arrival time, it is not a viable explanation for the discrepancies. Velocity model error, however, can cause significant errors, especially if the source of the event is below a low velocity zone. With increasing velocity model error, there is a bias for the surface arrays to locate events deeper than necessary, and for the downhole arrays to locate events shallower than necessary.

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/content/papers/10.3997/2214-4609.201700751
2017-06-12
2024-04-19
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References

  1. Alberta Energy Regulator
    [2015] Subsurface Order No. 2, https://aer.ca/documents/orders/subsurface-orders/SO2.pdf
    [Google Scholar]
  2. Aki, K., and P. G.Richards
    [2002] Quantitative Seismology: Second Edition, University Science Books, 63–77.
    [Google Scholar]
  3. Atkinson, G.M., Eaton, D.W., Ghofrani, H., Walker, D., Cheadle, B., Schultz, R., Shcherbakov, R., Tiampo, K., Gu, J., Harrington, R.M., Liu, Y., van der Baan, M. and Kao, H.
    [2016] Hydraulic Fracturing and Seismicity in the Western Canada Sedimentary Basin. Seismological Research Letters, 87(3), 631–647.
    [Google Scholar]
  4. Eaton, D., Akram, J., St-Onge, A., and Forouhideh, F.
    [2011] mmp: A prototype matlab-based borehole microseismic processing system. Microseismic Industry Consortium Research Report, 1, 8:1–8.
    [Google Scholar]
  5. Kolsky, H.
    [1956] The propagation of stress pulses in viscoelastic solids, Phys. Mag., 1, 693–710.
    [Google Scholar]
  6. Maxwell, S.
    [2014] Microseismic imaging of hydraulic fracturing: improved engineering of unconventional shale reservoirs (distinguished instructor seroes no. 17), SEG, 1–214.
    [Google Scholar]
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