Insights on the robustness of event locations from analysis of acoustic emissions observed in a triaxial experiment

I. A. Vera Rodriguez, S. Stanchits, J. Burghardt

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

This work compares acoustic emission raw-location results for a hydraulic fracture experiment performed under triaxial stress conditions. The observed acoustic emissions were located using two different homogeneous velocity models. One of the models considers only compressional velocities derived from the measurement of transmission signals. The second model uses the same velocity for compressional waves but also incorporates an estimation of shear wave velocity. Both, compressional and shear wave velocities, present errors that in the case of compressional waves are known to be in the range from 1.5% to 5%. The acoustic emission raw-clouds obtained with both models are compared with the surface of the created hydraulic fracture, which was laser-scanned over the open rock sample. The raw-location results highlight robustness in the location algorithms to the errors in the velocity models and place more importance in the incorporation of shear wave information for the determination of accurate hypocentre locations.

Original languageEnglish
Title of host publication78th EAGE Conference and Exhibition 2016
Subtitle of host publicationEfficient Use of Technology - Unlocking Potential
PublisherEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Electronic)9789462821859
Publication statusPublished - 2016
Externally publishedYes
Event78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential - Vienna, Austria
Duration: 30 May 20162 Jun 2016

Publication series

Name78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential

Conference

Conference78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential
Country/TerritoryAustria
CityVienna
Period30/05/162/06/16

Fingerprint

Dive into the research topics of 'Insights on the robustness of event locations from analysis of acoustic emissions observed in a triaxial experiment'. Together they form a unique fingerprint.

Cite this