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Abstract

Summary

In this work we consider a microseismic dataset acquired during a hydraulic stimulation of a shale gas reservoir in the Horn River Basin. We apply our common-receiver gather technique to analyze microseismic waveforms and to detect multiple arrivals of the slow shear wave. This information is extremely useful for velocity model inversion because it helps to constrain the anisotropy parameters in the target layer. We also show that even advanced microseismic monitoring system that includes two non vertical borehole receiver arrays may introduce ambiguity into a grid search based microseismic event location algorithm. To overcome this problem we present a location workflow that in addition to arrival times takes into account polarizations of the P-wave as well as crosscorelations between microseismic recordings. We show how this updated workflow improves quality of event localization.

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/content/papers/10.3997/2214-4609.201413018
2015-06-01
2020-01-23
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References

  1. Kummerow, J.
    [2010] Using the value of the crosscorrelation coefficient to locate microseismic events. Geophysics, 75(4), MA47–MA52, doi:10.1190/1.3463713.
    https://doi.org/10.1190/1.3463713 [Google Scholar]
  2. Maxwell, S.C., Rutledge, J., Jones, R. and Fehler, M.
    [2010] Petroleum reservoir characterization using downhole microseismic monitoring. Geophysics, 75(5), 75A129–75A137.
    [Google Scholar]
  3. Mayerhofer, M., Lolon, E., Warpinski, N., Cipolla, C., Walser, D. and Rightmire, C.
    [2008] What is stimulated rock volume?SPE Shale Gas Production Conference, doi:10.2118/119890‑MS.
    https://doi.org/10.2118/119890-MS [Google Scholar]
  4. Pavlis, G.L.
    [1992] Appraising relative earthquake location errors. Bulletin of the Seismological Society of America, 82(2), 836–859.
    [Google Scholar]
  5. Reshetnikov, A. and Shapiro, S.
    [2014] Common-receiver Gathers as a Tool for Analysis of Microseismic Waveforms and Quality of Time Picks. 76th EAGE Conference and Exhibition 2014.
    [Google Scholar]
  6. Rutledge, J., Phillips, W. and Mayerhofer, M.
    [2004] Faulting induced by forced fluid injection and fluid flow forced by faulting: An interpretation of hydraulic-fracture microseismicity, Carthage Cotton Valley gas field, Texas. Bulletin of the Seismological Society of America, 94(5), 1817–1830.
    [Google Scholar]
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