This abstract presents a case study where an anisotropic velocity model for surface microseismic monitoring is obtained from travel time inversion using P- and SV-wave arrivals of microseismic events that are observable on the surface records. Additionally, we correct for statics using cross-correlation of the P-wave arrivals of the same events. The calibration of the velocity model proves robust to uncertainties in the locations of the reference events. The comparison to event locations derived with an isotropic velocity model results in negligible differences in the epicentre and comparable depths of events. Finally, the application of static corrections shifts the event locations while increasing the maximum stacked energy, suggesting improvement in location accuracy. The findings emphasize the relative importance of near-surface effects over the importance of anisotropy and heterogeneity for this particular case study.


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  1. Backus, G.E.
    [1962] Longwave elastic anisotropy produced by horizontal layering. Journal of Geophysical Research, 67(11), 4427–4440.
    [Google Scholar]
  2. Drew, J., Leslie, D., Armstrong, P. and Michaud, G.
    [2005] Automated microseismic event detection and location by continuous spatial mapping. SPE Annual Technical Conference and Exhibition, SPE-95513-MS.
    [Google Scholar]
  3. Eisner, L., Duncan, P., Heigl, W. and Keller, W.
    [2009] Uncertainties in passive seismic monitoring. The Leading Edge, 28(6), 648–655.
    [Google Scholar]
  4. Le Calvez, J., Williams, M. and Couch, J.
    [2013] Tool and Velocity Model Calibration for Downhole-Based Hydraulic Fracture Monitoring of Induced Microseismicity. SEG Annual Meeting, SEG-2013-0212.
    [Google Scholar]
  5. Mizuno, T., Leaney, S. and Michaud, G.
    [2010] Anisotropic velocity model inversion for imaging the microseismic cloud. 72nd EAGE Conference & Exhibition, Extended Abstracts, F014.
    [Google Scholar]
  6. Thomsen, L.
    [1986] Weak elastic anisotropy. Geophysics, 51(10), 1954–1966.
    [Google Scholar]
  7. Tsvankin, I.D.
    [2001] Seismic signatures and analysis of reflection data in anisotropic media. In: Helbig, K. and Treitel, S. (Eds.) Handbook of Geophysical Exploration. Pergamon, Amsterdam and New York.
    [Google Scholar]
  8. Warpinski, N.R., Waltman, C.K., Du, J. and Ma, Q.
    [2009] Anisotropy effects in microseismic monitoring. SPE Annual Technical Conference and Exhibition, SPE-124208-MS.
    [Google Scholar]

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