Hydraulic data recorded at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1), GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2) and EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1)(Soultz-sous-Forêts) during 1995 stimulation, injection and circulation tests. 5 datasets are available: SSFS1995-Hydraulic_June: Flowrate, pressure and temperature data recorded from 10:05 06/06/95 to 23:59 30/06/95 during the two injection tests, the short term stimulation experiment and the long term stimulation experiment at GPK2. SSFS1995-Hydraulic_July: Flowrate, pressure and temperature data recorded from 00:00 01/07/95 to 10:20 29/07/95 during the stepped post-fracturing injection test at GPK2 and during the first circulation test between GPK1 and GPK2. SSFS1995-Hydraulic_August: Flowrate, pressure and temperature data recorded from 11:24 29/07/95 to 09:15 22/08/95 during the two last circulation tests between GPK1 and GPK2. SSFS1995-Hydraulic_GPK1_June_July: Downhole temperature and pressure data recorded at GPK1 from 02:16 26/06/95 to 09:24 03/07/95 during the end of the long term stimulation experiment and the stepped post-fracturing injection test at GPK2. SSFS1995-Hydraulic_GPK1_August: Downhole temperature and pressure data recorded at GPK1 from 17:09 15/08/95 to 13:08 20/08/95 during the third circulation test experiment between GPK1 and GPK2. SSFS1995-Hydraulic_GPK2_June_July: Downhole temperature and pressure data recorded at GPK2 from 16:12 16/06/95 to 13:24 10/07/95 during the long term stimulation experiment at GPK2, the stepped post-fracturing injection test at GPK2 and during the beginning of the first circulation test between GPK1 and GPK2. SSFS1995-Hydraulic_GPK2_August: Downhole temperature and pressure data recorded at GPK2 from 16:42 30/07/95 to 09:17 21/08/95 during the third circulation test between GPK1 and GPK2. Last update of data: 29/01/2020

During June/July 2000 a hydraulic stimulation program was conducted in the well GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK2) at the European Hot Dry Rock project, Soultz-sous-Forêts, France. The stimulation was performed over the openhole section of GPK2 from 4431 m measured depth (MD) to the bottom of the well at around 5084 m MD. A total of 27 800 m3 of water were injected. At the start of the stimulation 700 m3 of brine with a density of approximately 1.2 g/cc were injected in an effort to encourage downward growth of the stimulated region. The stimulation covered a period of 6 days. After a break of 7 days a post-fracturing, injection test was performed. Seismic monitoring continued for a further 11 days after the injection test (Dyer, B., 2001.Soultz GPK2 stimulation June/July 2000. Seismic monitoring report.). Dates of the different tests of the 2000 hydraulic program: - Stimulation test at GPK2: from 18:44 30/06/2000 to 16:33 06/07/2000. - Post-stimulation injection test at GPK2: from 10:09 13/07/2000 to 20:25 15/07/2000. The Episode contains several datasets which you can find further down the page in "Links".

After drilling GPK2 an extensive hydraulic program was performed in 1995 to test the well and the circulation with GPK1. The main tests were realized during June, July and August 1995. It consisted first of two injection tests at GPK2 in June. The injection tests revealed that the injectivity was too low to consider circulation between the two wells GPK1 and GPK2. A short term and a long term stimulation experiments were also performed in June at GPK2 to stimulate the fracture network. A total of 28000 m3 of fluid was injected during the long term experiment. Following the stimulations, a stepped post-fracturing injection test was realized to observe the results of the stimulations. Finally, three relatively short circulation experiments were performed in July and August by using GPK1 as production borehole and GPK2 as reinjection borehole. Dates of the different tests of the 1995 hydraulic programme: - First injection test at GPK2: from 11:26 11/06/95 to 01:50 12/06/95 - Second injection test at GPK2: from 11:56 12/06/95 to 23:11 12/06/95 - Short term stimulation experiment at GPK2: from 20:00 14/06/95 to 01:27 15/06/95 - Long term stimulation experiment at GPK2: from 10:24 17/06/95 to 16:03 28/06/95 - Stepped post-fracturing injection test at GPK2: from 08:08 01/07/95 to 20:02 02/07/95 - First circulation test between GPK1 and GPK2: from 08:35 09/07/95 to 21:32 24/07/95 - Second circulation test between GPK1 and GPK2: from 13:09 31/07/95 to 19:04 09/08/95 - Third circulation test between GPK1 and GPK2: from 04:50 16/08/95 to 19:19 20/08/95 Baumgärtner, J., Jung, R., Gérard, A., Baria, R. and Garnish, J., 1996.The European HDR project at Soultz-sous-Forêts: stimulation of the second deep well and first circulation experiments, Proceedings of the 21st Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 22-24, 1996. Gérard, A., Baumgärtner, J., Baria, R. and Jung, R., 1997. An attempt towards a conceptual model derived from 1993-1996 hydraulic operations at Soultz, Proceedings of the NEDO International Geothermal Symposium, Sendai, Japan, 11-12 March 1997.

Microseismic catalogue recorded by the EOPGS surface network and the downhole network at Soultz-sous-Forêts during the 1993 episode. The catalogue is part John Helm's thesis : The natural seismic hazard and induced seismicity of the European HDR (Hot Dry Rock) geothermal energy project at Soultz-sous-Forêts (Bas-Rhin, France), Appendix V. The events of the catalogue cover the 1st stimulation test, the 2nd packer test and the 2nd stimulation test of the 1993 episode. Number of events: 96. Time period: 07/09/1993 18:08:32 - 16/10/1993 19:56:43. The data parameters used are the following: Column 1: Seismic ID Column 2: EOPGS event number Column 3: CSMA file Column 4: CSMA event number Column 5: Date Column 6: Corrected origin time (UTC) Column 7: Easting from GPK1 wellhead * Column 8: Northing from GPK1 wellhead * Column 9: Depth from GPK1 wellhead * Column 10: Latitude WGS84 ** Column 11: Longitude WGS84 ** Column 12: Elevation WGS84 ** Column 13: Event magnitude Column 14: Seismic moment Column 15: Source radius * The local coordinate system is based on the UTM32 system. ** Latitude, longitude and elevation have been derived from easting, northing and depth from GPK1 wellhead. The EOPGS microseismic surface network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-surface_network). The microseismic downhole network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-network). The velocity model used is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-velocity_model). Unfortunately the waveforms recorded by the surface network have been lost. Last update of data: 23/07/2019

The microseismic monitoring at Rittershoffen began 6 months before any drilling. Four permanent stations were deployed at the surface in 2012 and completed the network of eight surface stations from the Soultz-sous-Forêts network. The permanent network is composed of one or three-components seismometers. A temporary network of 31 stations (TOPASE network) was deployed from June 2013 to November 2014 to improve the dectection and location of the seismic monitoring during the field development operations. The stations of the temporary network were three-component seismometers belonging to the Geophysical Instrument Pool Potsdam (GIPP) of the GFZ German Research Centre for Geosciences. Easting and northing in the file refer to the extended Lambert II Cartesian system. The latitude and longitude in the WGS84 coordinate system have been derived from the extended Lambert II Cartesian system. Original data from Maurer et al., 2020 https://doi.org/10.1186/s40517-020-0155-2

The 4601 well was an old oil well drilled in 1951. It has been deepened in the framework of the Soultz-sous-Forêts project from 1010m to 1604m. A seismic probe was deployed at the bottom of the well to monitor the microseismic activity induced by the several experiments conducted on the geothermal site of Soultz-sous-Forêts. Location of the 4601 wellhead (in WGS84): - Latitude: 48.92805654 | 48° 55' 41" N - Longitude: 7.84882476 | 7° 50' 55" E - Altitude: 169m

The 4616 well was an old oil well drilled in 1950-1951. The well was recovered and used as seismic observation well of the Soultz-sous-Forêts geothermal project from 1987. It has been deepened in the framework of the project to 1414m in 1990. Location of the 4616 wellhead (in Lambert coordinates): - Latitude: 48.93879707 | 48° 56' 19" N - Longitude: 7.86502087 | 7° 51' 54" E - Altitude: 155.4m

The downhole seismological network in 1993 consisted of three accelerometers (4-component sensors) built by the CSMA and one hydrophone. The 4-component sondes were deployed in boreholes 4616 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4616), 4601 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4601) and 4550 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4550) ( at depths of around 1500m within the granite and were grouted in place. The hydrophone was deployed in EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) at a depth of around 2000m (Baria, R. 1996.The European HDR programme 1992-1995). The X,Y,Z coordinates in the file refer to the local coordinate system with the GPK1 wellhead as origin: X: Easting in meters from GPK1 wellhead (toward UTM32 East) Y: Northing in meters from GPK1 wellhead (toward UTM32 North) Z: Depth in meters from GPK1 wellhead The local coordinate system is based on the UTM32 system. The coordinates of the stations in the local coordinate system have been obtained from the report R 39025 of the BRGM by Hulot et al., 1996 (Testing the hodogram method on the 1993 Soultz microseismic data). The latitude, longitude and elevation in the WGS84 coordinate system have been derived from the local coordinate system. The associated catalogue is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-catalogue). The associated waveforms are available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-seed). Last update of data: 24/07/2019

Catalogue of microseismicity recorded at Soultz-sous-Forêts during 1993 stimulation by the downhole network. Calculated by the CSMA. Number of events: 10744. The data parameters are the following: Column 1: Seismic ID Column 2: Event number Column 3: Easting from GPK1 wellhead * Column 4: Northing from GPK1 wellhead * Column 5: Depth from GPK1 wellhead * Column 6: Latitude WGS84 ** Column 7: Longitude WGS84 ** Column 8: Elevation WGS84 ** Column 9: Maximum peak to peak P-wave amplitude Column 10: Maximum peak to peak S-wave amplitude Column 11: Source radius Column 12: Stress drop Column 13: Moment magnitude Column 14: Record name Column 15: Date (local) Column 16: Time (local) Column 17: Date (UTC) *** Column 18: Time (UTC) *** * The local coordinate system is based on the UTM32 system. ** Latitude, longitude and elevation have been derived from easting, northing and depth from GPK1 wellhead. *** The UTC time has been calculated from the local time. The associated waveforms are available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-seed). The description of the downhole network is available (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1993-network). Last update of data: 24/09/2019

Hydraulic data recorded at GPK2 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK2), GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) and EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1). Two datasets are available: SSFS2000-Hydraulic_stimulation.csv: hydraulic data from 30/06/2000 to 13/07/2000. SSFS2000-Hydraulic_injection_test.csv: hydraulic data from 13/07/2000 to 20/07/2000. The first dataset corresponds to the data collected during the stimulation phase of GPK2. The second dataset corresponds to the data recorded during the post-stimulation injection test realized at GPK2. The data parameters are the following: Qin1: GPK2 injection flowrate with Omega/Ebara pump Qin2: GPK2 injection flowrate with ERGA pump Tin: GPK2 injection temperature Pw1: GPK2 wellhead pressure (400 bar sensor) Pw2: GPK2 wellhead pressure (200 bar sensor) Pa: GPK2 annulus pressure Pa_EPS1: EPS1 annulus pressure Qin3: GPK2 injection flowrate with BGR pump Qin4: ? Pwc_GPK1: GPK1 pressure above water column Pa_GPK1: GPK1 annulus pressure Qin_total: GPK2 total injection flowrate WL_GPK1: GPK1 water level Pw3: GPK2 wellhead pressure (50 bar sensor) Last update of data: 06/09/2019