1887

Abstract

Summary

Understanding how fluids pressure produce seismic or aseismic motion along faults is an important goal for seismic hazard assessment and for geological reservoir monitoring. Seismicity rate increase in fluid injection areas where some events may reach magnitude greater than 5. Besides, the microseismicity is one the few tools used to follow fluid migration at depth. In-situ experiments were performed in limestones similar to those observed in the Middle-East. By injecting fluids at high-pressure in the damaged zone of an inactive fault at 280m depth, we study the seismological and hydromechanical responses (recorded by 31 sensors) of different fracture types to a fluid perturbation. Only a few tests have generated seismicity even if ruptures are observed with a displacement sensor at the injection point. Detected earthquakes are characterized by high frequency content (0.6 to 3 KHz) and weak magnitude (−4). The relative and absolute locations (1.5m accuracy) indicate a lack of events in the vicinity of injection borehole. Results show that about 96% of the deformation is aseismic. Finally, our experiment showed that fluid injection mainly drives aseismic motion and the seismicity might be only an indirect effect related to stress transferred from the volume deformed by fluid pressurization.

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/content/papers/10.3997/2214-4609.201701224
2017-06-12
2024-04-20
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References

  1. Brune, J.
    [1970] Tectonic stress and the spectra of seismic shear waves from earthquakes. Journal of Geophysical Research, 75, 4997–5009.
    [Google Scholar]
  2. Cornet, F.H.
    [2016]. Seismic and aseismic motions generated by fluid injections. Geomechanics for Energy and the Environment, 5, 42–54.
    [Google Scholar]
  3. Daniel, G.
    [2014]. Bias in magnitude for earthquakes with unkwon focal mechanism. Geophysical Prospecting, 62, 848–861.
    [Google Scholar]
  4. De Barros, L., Daniel, G., Guglielmi, Y., Rivet, D., Caron, H., Payre, X., Bergery, G., Henry, P., Castilla, R., Dick, P., Barbieri, E., Gourlay, M.
    [2016]. Fault structure, stress, or pressure control of the seismicity in shale? Insights from a controlled experiment of fluid-induced fault reactivation. Journal of Geophysical Research : Solid Earth, 121(6), 4506–4522.
    [Google Scholar]
  5. Derode, B., Gugliemi, Y., De Barros, L., Cappa, F.
    [2015]. Seismic responses to fluid pressure perturbations in a slipping fault. Geophysical Research Letters, 42, 3197–3203.
    [Google Scholar]
  6. Ellsworth, W. L., Llenos, A. L., McGarr, A. F., Michael, A. J., Rubinstein, J. L., Mueller, C. S., Petersen, M. D., Calais, E.
    [2015]. Increasing seismicity in the U. S. midcontinent: Implications for earthquake hazard. The Leading Edge, 34(6), 618–626.
    [Google Scholar]
  7. Guglielmi, Y., Cappa, F., Avouac, J.-P., Henry, P., Elsworth, D.
    [2015]. Seismicity triggered by fluid injection-induced aseismic slip. Science, 348, 1224–1226.
    [Google Scholar]
  8. Guglielmi, Y., Cappa, F., Lançon, H., Janowczyk, J.-B., Rutqvist, J., Tsang, C., Wang, J.
    [2013]. ISRM Suggested Method for Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP): Using a 3-Components Borehole Deformation Sensor. Rock Mechanics and Rock Engineering47, 303–311.
    [Google Scholar]
  9. McGarr, A.
    [2014]. Maximum magnitude earthquakes induced by fluid injection. Journal of Geophysical Research: Solid Earth, 119, 1008–1019.
    [Google Scholar]
  10. Shapiro, S., Rothert, E., Rath, V., Rindschwentner, J.
    [2002]. Characterization of fluid trasnport properties of reservoir using induced microseismicity. Geophysics, 67(1), 212–220.
    [Google Scholar]
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