EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Experimental and numerical investigation of acoustic emission and its moment tensors in sandstones during failure based on the elastoplastic approach

Elena Grishko1, Viktoriya Yarushina2, Maria Bobrova1, Sergei Stanchits1, Alexander Minakov3, and Vladimir Stukachev1
Elena Grishko et al.
  • 1Skolkovo Institute of Science and Technology, Center for Hydrocarbon Recovery, Moscow, Russian Federation
  • 2Institute for Energy Technology, Department of Reservoir Technology, Kjeller, Norway
  • 3University of Oslo, Centre for Earth Evolution and Dynamics, Oslo, Norway

Microseismicity and acoustic emission (AE) studies are a part of earthquake science. Compared to ordinary earthquakes, microseismic events are characterized by higher frequencies, lower magnitudes, shorter duration, and more complex source mechanisms. The researchers associate the induced seismicity with different processes: borehole breakouts, tunnel excavations, hydraulic fracturing, wastewater injection, and stimulation of geothermal reservoirs.

Acoustic emission represents elastic waves generated spontaneously due to the formation of microfractures when the rock is undergoing a sufficiently high load. AE can be used to obtain continuous data at various stages of the deformation process: from distributed plastic failure to localized macroscopic failure. The spatial distribution of AE events indicates the location of fractures, and the source mechanism provides information about the failure mode: a tensile fracture, a shear fracture, or a combination of both.

This work shows the results of an experimental study of borehole breakouts in sandstones. We measured AE during the deformation experiments and applied the moment tensor analysis to microseismic waveforms. We used a continuum mechanics model of Minakov and Yarushina [2021] to relate the laboratory AE data to the deformation processes. The comparison of the failure patterns and corresponding seismic responses obtained in laboratory and simulations, allows to classify the deformation regimes in real rocks based on seismic observables.

EG, MB, SS, and VS gratefully acknowledge support from the Ministry of Science and Higher Education of the Russian Federation under agreement No. 075-15-2020-119 within the framework of the development program for a world-class Research Center.



  • Minakov, A., Yarushina, V., Elastoplastic source model for microseismicity and acoustic emission, Geophysical Journal International, Volume 227, Issue 1, October 2021, Pages 33–53,

How to cite: Grishko, E., Yarushina, V., Bobrova, M., Stanchits, S., Minakov, A., and Stukachev, V.: Experimental and numerical investigation of acoustic emission and its moment tensors in sandstones during failure based on the elastoplastic approach, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-12337,, 2022.