Comprehensive data set of in-situ hydraulic stimulation experiments for geothermal purposes at the Äspö Hard Rock Laboratory (Sweden)

Cite as:

Zang, Arno; Niemz, Peter; von Specht, Sebastian; Zimmermann, Günther; Milkereit, Claus; Plenkers, Katrin; Klee, Gerd (2023): Comprehensive data set of in-situ hydraulic stimulation experiments for geothermal purposes at the Äspö Hard Rock Laboratory (Sweden). GFZ Data Services. https://doi.org/10.5880/GFZ.2.6.2023.004

Status

I N R E V I E W : Zang, Arno; Niemz, Peter; von Specht, Sebastian; Zimmermann, Günther; Milkereit, Claus; Plenkers, Katrin; Klee, Gerd (2023): Comprehensive data set of in-situ hydraulic stimulation experiments for geothermal purposes at the Äspö Hard Rock Laboratory (Sweden). GFZ Data Services. https://doi.org/10.5880/GFZ.2.6.2023.004

Abstract

This data set contains measurements of an underground hydraulic fracture experiment at Äspö Hard Rock Laboratory in May and June 2015. The experiment tested various injection schemes for rock fracture stimulation and monitored the resulting seismicity. The primary purpose of the experiment is to identify injection schemes that provide rock fracturing while reducing seismicity or at least mitigate larger seismic events. In total, six tests with three different injection schemes were performed in various igneous rock types. Both the injection process and the accompanied seismicity were monitored. For injection monitoring, the water flow and pressure are provided and additional tests for rock permeability.

The seismicity was monitored in both triggered and continuous mode during the tests by high-resolution acoustic emission sensors, accelerometers and broadband seismometers. Both waveform data and seismicity catalogs are provided.

Authors

Zang, Arno;GFZ German Research Centre for Geosciences, Potsdam, Germany;Institute of Earth Sciences, University of Potsdam, Germany
Niemz, Peter;University of Utah Seismograph Stations, Salt Lake City, UT, US;GFZ German Research Centre for Geosciences, Potsdam, Germany
von Specht, Sebastian;Institute of Mathematics, University of Potsdam, Germany
Zimmermann, Günther;GFZ German Research Centre for Geosciences, Potsdam, Germany
Milkereit, Claus;GFZ German Research Centre for Geosciences, Potsdam, Germany
Plenkers, Katrin;GmuG mbH, Bad Nauheim, Germany
Klee, Gerd;SolExperts GmbH, Bochum, Germany

Contact

Zang, Arno; GFZ German Research Centre for Geosciences, Potsdam, Germany;

Keywords

hydraulic experiments, broadband seismic data, acoustic emissions, Äspö Hard Rock Laboratory, borehole images

GCMD Science Keywords

EARTH SCIENCE > SOLID EARTH
EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS
In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS > SEISMOLOGICAL STATIONS

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