Catalogue of microseismicity recorded at Soultz-sous-Forêts during 1995 stimulation, injection and circulation tests. Number of events: 5295. Time period: 15:15:45 14/06/1995 to 04:33:27 15/08/1995. The data parameters are the following: Column 1: Seismic ID Column 2: Time and date (yyyy-mm-dd hh:mm:ss) 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 ** 3636 events from this catalogue are in the other catalogue for 1995 (available https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFS1995-Catalogue) as well. There are differences of location for 3287 events between the two catalogues, probably due to the use of different models for the relocation. * 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. Last update of data: 12/07/2019

Geoven (http://www.geoven.fr) is a geothermal powerplant project led by Fonroche Géothermie now Arverne (https://arverne.earth/). The project is implemented on the site of the Rhenan Ecoparc at Vendenheim, north of Strasbourg. The geothermal powerplant produced 6 MW of electrical energy and 40 MW of thermal energy. To this end, two wells were used to draw the hot water and reinject it at more than 4000 meters deep. The two wells VDH-GT1 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/VDH-GT1) and VDH-GT2 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/VDH-GT2) had been drilled and some tests had been conducted (5 injectivity and productivity cycles between 02/2018 and 11/2019). A first interruption occured after a first period of seismicity (11/2019 – 01/2020, MLv=3.0 max) at Strasbourg and Vendenheim, to allow a third-party scientific expertise. During this period, the well was deepened of 450m to reach 5000m. New tests were authorized starting 10/2020, but were stopped on 28/10/2020 after a new period of seismicity with quake reaching 3.6MLv (04/12/2020). Authority decided on 07/12/2020 to definitely stop the project. Another earthquake of 3.9 ML (https://www.franceseisme.fr/donnees/intensites/2021/210626_0300/Rapport_BCSF-RENASS_2021R1_EVT210626-DPT67.pdf) occured on 26/06/2021. Authorities set up a committee of experts that delivered a first report (https://www.bas-rhin.gouv.fr/Politiques-publiques/Environnement/Geothermie/Rapport-du-comite-d-experts-cree-en-appui-a-l-administration-sur-la-boucle-geothermique-GEOVEN).

In June and July 1994, the hydraulic experimental programme consisted of a production test and an injection test at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1). During the production test in June, EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1) was used as injection well. A total of 6200 m3 of fluid were produced during the test. Then the injection test in July was intended to determine the injectivity of the stimulated fracture system as a function of the flowrate. A total of 9600 m3 of water were injected at various flowrates during the test (Baria, R., 1996.The European HDR programme 1992 - 1995). Dates of the different tests of the 1994 hydraulic programme: - Production test at GPK1: from 15:58 16/06/94 to 10:15 28/06/96 - Injection test at GPK1: from 11:06 05/07/94 to 14:56 13/07/96 The Episode contains the following datasets: - Microseismic downhole network - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Downhole_network); - Microseismic catalogue of the downhole network from CSMA - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Catalogue_all); - Microseismic catalogue with moment magnitude of the downhole network from CSMA - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Catalogue); - Flow logs - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Flow_logs_gpk1); - Temperature logs - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Temperature_logs_gpk1); - Hydraulic data - Soultz-sous-Forêts 1994 Hydraulic Tests (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSFC1994-Hydraulic);