1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. 79th EAGE Conference and Exhibition 2017
  5. Conference paper

Abstract

Summary

Source mechanism is an attribute of interest in acoustic emission (AE) analysis which has been used to determine the nature of failure during laboratory experiments. In this abstract, we present the results of the moment tensor inversion of AEs recorded during the hydraulic fracturing of a Colton sandstone block at triaxial stress conditions. The source geometries given by the biaxial decomposition of the moment tensor solutions contain a family of auxiliary planes lying parallel to the orientation of the main hydraulic fracture’s plane. During fracture propagation, most AEs were concentrated near the edge of the fracture, reflecting a tensile stress regime with opening angles mostly around 30 degrees. After breakdown, the pumps were reversed to withdraw fluid from the borehole. At this point, the stress field became compressive with AEs distributed across the complete face of the hydraulic fracture showing source mechanisms that reflected the closing of the fracture’s plane. Closing angles were in general lower in magnitude than opening angles.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201700538
2017-06-12
2024-04-26

  • From This Site

    /content/papers/10.3997/2214-4609.201700538
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Aker, E., Kuhn, D., Vavryčuk, V., Soldal, M. and Oye, V.
    [2014] Experimental investigation of acoustic emissions and their moment tensors in rock failure. International Journal of Rock Mechanics & Mining Sciences, 70, 286–295.
     [Google Scholar]
  2. Chapman, C. and Leaney, W.
    [2012] A new moment-tensor decomposition for seismic events in anisotropic media. Geophysical Journal International, 188, 343–370.
     [Google Scholar]
  3. Dahm, T.
    [1996] Relative moment tensor inversion based on ray theory: theory and synthetic tests. Geophysical Journal International, 124, 245–257.
     [Google Scholar]
  4. Goodfellow, S., Nasseri, M., Maxwell, S. and Young, R.
    [2015] Hydraulic fracture energy budget: insights from the laboratory. Geophysical Research Letters, 42, 3179–3187.
     [Google Scholar]
  5. Majer, E. and Doe, T.
    [1986] Studying Hydrofractures by High Frequency Seismic Monitoring. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 23, 185–199.
     [Google Scholar]
  6. Manthei, G.
    [2005] Characterization of Acoustic Emission Sources in a Rock Salt Specimen under Triaxial Compression. Bulletin of the Seismological Society of America, 95, 1674–1700.
     [Google Scholar]
  7. Ohtsu, M.
    [1991] Simplified Moment Tensor Analysis and Unified Decomposition of Acoustic Emission Source: Application to in Situ Hydrofracturing Test. Journal of Geophysical Research, 96, 6211–6221.
     [Google Scholar]
  8. Vera Rodriguez, I., Stanchits, S. and Burghardt, J.
    [2016a] Data-driven, in-situ, relative sensor calibration based on waveform fitting moment tensor inversion. Rock Mechanics and Rock Engineering, DOI 10.1007/s00603‑016‑1144‑4.
     https://doi.org/10.1007/s00603-016-1144-4 [Google Scholar]
  9. [2016b] Insights on the robustness of event locations from analysis of acoustic emissions observed in a triaxial experiment. 78th EAGE Conference and Exhibition, EAGE, Vienna, Austria.
     [Google Scholar]
  10. Zang, A., Wagner, F., Stanchits, S., Dresen, G., Andersen, R. and Haidekker, M.
    [1998] Source analysis of acoustic emissions in Aue granite cores under symmetric and asymmetric compressive loads. Geophysical Journal International, 135, 1113–1130.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201700538
Loading
Non-double Couple Microseismic Events - Evidence from the Laboratory
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201700538
/content/papers/10.3997/2214-4609.201700538
/content/papers/10.3997/2214-4609.201700538
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

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