1887

Abstract

Summary

Safe geologic sequestration of CO is important to decrease the concentration of greenhouse gases in the atmosphere. However, the injection could increase the underground pore pressure and potentially induce sliding of critically stressed faults. We report results from a laboratory test where fluid injections close to an artificial interface of ∼1m length were observed to induce sliding. During the injection, the pore pressure at the injection point reached up to 6.2 MPa and after shut-in, it dropped down to almost zero. However, about 10 minutes later, a sudden sliding of the interface (stick-slip motion) was recorded. Two types of acoustic emission (AE) signals were detected: short bursts and long-lasting oscillations (tremors). The analysis of the spatial distribution of the AE energy was applied to monitor the dynamics of stick-slip, indicating a nucleation phase of the sliding, then the rupture propagated through the whole interface with an average rupture velocity of a few m/s. The speed and the energy radiated during this event were approximately 6 orders of magnitude larger than observed during quasi-static sliding preceding the stick-slip. This observed stick-slip motion can be considered a laboratory analogue to earthquakes, and its occurrence can be related to the injection of fluids.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800718
2018-06-11
2020-07-04
Loading full text...

Full text loading...

References

  1. Bauer, R.A., M.Carney and R.J.Finley
    [2016] Overview of microseismic response to CO2 injection into the Mt. Simon saline reservoir at the Illinois Basin-Decatur Project USA, J. Greenhouse Gas Sci and Technol. 54, 378–388; doi:10.1016/j.iggc.2015.12.015.
    https://doi.org/10.1016/j.iggc.2015.12.015 [Google Scholar]
  2. Cerasi, P., R.M.Holt, A.Lavrov, J.F.Stenebråten
    [2016] Investigation of Geomechanical and Rock Physics Aspects Related to Underground Storage and Monitoring of CO2, J. Ind. Geophys. Unio.
    [Google Scholar]
  3. Finley, R.
    [2014] An overview of the Illinois Basin – Decatur Project, J. Greenhouse Gas Sci Techno. 4:571–579; doi: 10.1002/ghg.1433.
    https://doi.org/10.1002/ghg.1433 [Google Scholar]
  4. Goertz-Allmann, B.P., S.J.Gibbons, V.Oye, R.Bauer, and R.Will
    (2017), Characterization of induced seismicity patterns derived from internal structure in event clusters, J. Geophys. Res. Solid Earth, 122, 3875–3894, doi:10.1002/2016JB013731.
    https://doi.org/10.1002/2016JB013731 [Google Scholar]
  5. Johnston, M., R.Borcherdt, A.Linde, and M.Gladwin
    [2006] Continuous borehole strain and pore pressure in the near field of the 28 September 2004 Mw 6.0 Parkfield, California, earthquake: Implications for nucleation, fault response, earthquake prediction, and tremor, BSS. 96(4B).
    [Google Scholar]
  6. McGarr, A., B.Bekins, N.Burkardt, J.Dewey, P.Earle, W.Ellsworth, S.Ge, S.Hickman, A.Holland, E.Majer, J.Rubinstein, A.Sheehan
    [2015] Coping with earthquakes induced by fluid injection, Science, 347, 830–810, doi: 10.1126/science.aaa0494.
    https://doi.org/10.1126/science.aaa0494 [Google Scholar]
  7. McLaskey, G. and B.Kilgore
    [2013] Foreshocks during the nucleation of stick-slip instability. Journal of Geophysical Research: Solid Earth, 118, 2982–2997, doi:10.1002/jgrb.50232
    https://doi.org/10.1002/jgrb.50232 [Google Scholar]
  8. Stroisz, A.M., S.Pradhan, M.Jordan, P.Cerasi, L.E.Walle, A.Bauer, J.F.Stenebråten, S.Stanchits, R.Will
    [2016] Monitoring of Fracture Reopening in Sandstones, in Proc. 50th US Rock Mech. Symp.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800718
Loading
/content/papers/10.3997/2214-4609.201800718
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error