Hydraulic data recorded at 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) during the 1994 hydraulic programme. 5 datasets are available: -SSFC1994-Hydraulic_production.csv : Hydraulic data from GPK1 and EPS1 recorded from 14:56:19 16/06/94 to 10:15:44 28/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_production_GPK1.csv : Downhole hydraulic data from GPK1 recorded from 19:42:40 15/06/94 to 07:39:56 30/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_production_EPS1.csv : Hydraulic data from EPS1 recorded from 08:36:33 16/06/94 to 09:15:40 30/06/94 during the production test at GPK1. -SSFC1994-Hydraulic_injection.csv : Hydraulic data from GPK1 recorded from 11:06:29 05/07/94 to 05:35:02 17/07/94 during the injection test at GPK1. -SSFC1994-Hydraulic_injection_GPK1.csv : Downhole hydraulic data from GPK1 recorded from 10:58:39 05/07/94 to 12:56:06 16/07/94 during the injection test at GPK1. For an unknown reason some data are missing on several time periods for the files SSFC1994-Hydraulic_production_GPK1.csv, SSFC1994-Hydraulic_production_EPS1.csv and SSFC1994-Hydraulic_injection_GPK1.csv. Last update of data: 24/01/2020

Flow logs recorded at GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) well during 1993 stimulation. *Depth is given in meters *Flow is given in L/s Date of the logs: - 05/09/1993 - 06/09/1993 - 08/09/1993 - 09/09/1993 - 10/09/1993 - 11/09/1993 - 12/09/1993 - 13/09/1993 - 14/09/1993 - 15/09/1993 - 16/09/1993 - 18/09/1993 - 19/09/1993 - 20/09/1993 - 12/10/1993 - 13/10/1993 - 14/10/1993 - 15/10/1993 - 16/10/1993 - 18/10/1993 - 19/10/1993 More detailed information is given in the header of each file. Last update of data: 27/08/2019

Temperature logs recorded at GPK1 well (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) during 1993 stimulation. *Depth is given in meters *Temperature is given in °C Date of the logs: - 03/09/1993 - 04/09/1993 - 05/09/1993 - 06/09/1993 - 07/09/1993 - 08/09/1993 (2 logs) - 09/09/1993 - 10/09/1993 (2 logs) - 11/09/1993 - 12/09/1993 (2 logs) - 13/09/1993 - 14/09/1993 (2 logs) - 15/09/1993 - 16/09/1993 - 18/09/1993 (3 logs) - 19/09/1993 - 20/09/1993 - 21/09/1993 - 11/10/1993 - 12/10/1993 - 13/10/1993 - 14/10/1993 - 15/10/1993 - 16/10/1993 - 18/10/1993 (2 logs) - 19/10/1993 More detailed information is given in the header of each file. Last update of data: 27/08/2019

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

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

During the 1991 episode, two 50 hours hydraulic injection tests were carried out at the bottom of the well GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1). The fresh water was injected at a flowrate of 7 l/s during the first test and 15 l/s during the second test. New seismic probes composed of 3-axis accelerometers built by the CSM (Camborne School of Mines) monitored the induced seismicity. Two of them were deployed in new recovered wells 4550 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4550) and 4601 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-4601). In addition, two hydrophones were installed in a new borehole EPS1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-EPS1), drilled in 1990 and sited at about 600m SSE of GPK1. The network permitted to detect more than 400 induced seismic events during the two tests of the episode. About 60% of them were located. The following report from BRGM in the link gives details about the experiments and presents the results about the seismic monitoring and the location of the events. Some hydraulic data are presented as well with figures.

The Hot Dry Rock (HDR) site of Soultz-sous-Forêts in Alsace was chosen in 1986 for scientific investigations. During the first phase of the project (1987-1988), a first borehole GPK1 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK1) was drilled. It reached a final depth of 2000 m and various investigations were undertaken during that period. In December 1988, an injection test was made at the bottom zone of this borehole with a relatively low flow rate of 3.3 l/s for a period of three days. Induced seismicity recorded was detected by 3-axis geophone probes deployed in three old recovered oil wells at depth ranging from 850 to 1350 m. A small amount of the detected seismicity could be located and showed a trend to grow towards greater depths than the injection zone. The following report from BRGM in the link gives details about the experiments and presents the results about the seismic monitoring and the location of the events. Some hydraulic data are presented as well with figures.

Hydraulic data recorded at GPK1, GPK2, GPK3, GPK4 and EPS1 during the 2004 hydraulic program. Two datasets are available: SSFS2004-Hydraulic_injection.csv: hydraulic data from 07/09/2004 to 12/09/2004 during the low flow injection test at GPK4 SSFS2004-Hydraulic_stimulation.csv: hydraulic data from 12/09/2004 to 02/10/2004 during the stimulation test at GPK4 The data parameters for the file SSFS2004-Hydraulic_injection.csv are the following: Column 1: Date and time (UTC) Column 2: Qin_MeSy - GPK4 injection flowrate Column 3: Vin - Cumulative volume of injected fluid Column 4: Tin_MeSy - Temperature of injected fluid Column 5: WL_Tank - Water level in the tank * Column 6: P_Tank - Pressure in the tank * Column 7: Rho_Tank - Density of injected fluid Column 8: Pw3 - GPK3 wellhead pressure Column 9: Pan3 - GPK3 annulus pressure Column 10: Pw2 - GPK2 wellhead pressure Column 11: Pan2 - GPK2 annulus pressure Column 12: Pw4 - GPK4 wellhead pressure Column 13: Pan4 - GPK4 annulus pressure Column 14: Pan_EPS1 - EPS1 annulus pressure The data parameters for the file SSFS2004-Hydraulic_stimulation.csv are the following: Column 1: Date and time (UTC) Column 2: Qin_omega - GPK4 injection flowrate Column 3: Vin - Cumulative volume of injected fluid Column 4: Qout - GPK3 production flowrate Column 5: Vout - Cumulative volume of produced fluid Column 6: Tin_omega - Temperature of injected fluid Column 7: Tout2 - Temperature of produced fluid Column 8: Tout3 - Temperature of produced fluid (other sensor) Column 9: WL_Tank - Water level in the tank * Column 10: P_Tank - Pressure in the tank * Column 11: Rho_Tank - Density of injected fluid Column 12: Pw3 - GPK3 wellhead pressure Column 13: Pan3 - GPK3 annulus pressure Column 14: Pw2 - GPK2 wellhead pressure Column 15: Pan2 - GPK2 annulus pressure Column 16: Pw4 - GPK4 wellhead pressure Column 17: Pan4 - GPK4 annulus pressure Column 18: Pan_EPS1 - EPS1 annulus pressure Column 19: Pwc1 - GPK1 wellhead pressure Column 20 : Pan1 - GPK1 annulus pressure * The tank was used as a buffer for injection fluid. Last update of data: 31/10/2018

During February/March 2005 a hydraulic stimulation program was conducted in the well GPK4 (https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK4) at European Hot Dry Rock Project, Soultz-sous-Forêts, France. It is the second stimulation of GPK4, after the previous one, performed in September 2004. The hydraulic stimulation was followed a few days later by a program of chemical stimulation (injection of diluted HCl). This program involved the chemical stimulation itself and two identical step-rate injection tests. The first injection test was performed before the chemical stimulation and the second after, in order to observe the efficiency of the chemical stimulation. Dates of the 2005 hydraulic programme: - Second hydraulic stimulation of GPK4: from 18:05 07/02/2005 to 18:00 11/02/2005. - First step-rate injection test of GPK4: from 15:30 22/02/2005 to 15:30 25/02/2005. - Chemical stimulation of GPK4 with HCl: from 13:30 02/03/2005 to 06:00 05/03/2005. - Second step-rate injection test of GPK4: from 10:00 13/03/2005 to 09:55 16/03/2005. The Episode contains several datasets which you can find further down the page in "Links".

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 GPK3 (https://cdgp.u-strasbg.fr/geonetwork/srv/fre/catalog.search#/metadata/SSF-GPK3). Nine datasets are available: - SSFC2010-Flowrate_gpk1.csv : Injection flowrate recorded in GPK1 from 05:49:21 10/12/2009 to 23:50:00 14/10/2010. - SSFC2010-Flowrate_gpk2.csv : Production flowrate recorded at GPK2 from 23:23:51 18/11/2009 to 16:00:00 14/10/2010. - SSFC2010-Flowrate_gpk3.csv : Injection flowrate recorded in GPK3 from 00:45:42 01/12/2009 to 17:25:00 14/10/2010. - SSFC2010-Wellhead_pressure_gpk1.csv : Wellhead pressure recorded at GPK1 from 04:00:00 23/03/2010 to 23:20:00 14/10/2010. - SSFC2010-Wellhead_pressure_gpk2.csv : Wellhead pressure recorded at GPK2 from 14:34:18 19/11/2009 to 23:25:00 14/10/2010. - SSFC2010-Wellhead_pressure_gpk3.csv : Wellhead pressure recorded at GPK3 from 10:05:04 23/11/2009 to 23:55:00 24/10/2010. - SSFC2010-Temperature_gpk1.csv : Temperature recorded at GPK1 from 04:39:01 19/11/2009 to 23:55:00 14/10/2010. - SSFC2010-Temperature_gpk2.csv : Temperature recorded at GPK2 from 08:53:35 01/11/2009 to 23:00:00 14/10/2010. - SSFC2010-Temperature_gpk3.csv : Temperature recorded at GPK3 from 09:32:48 19/11/2009 to 23:55:00 14/10/2010. Due to several problems with the data acquisition system, some time periods of data are missing for all the files. Last update of data: 02/12/2019