The 2004 stimulation was aimed at improving the hydraulic performances of the well GPK4 ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSF-GPK4 ). This borehole was stimulated twice. The 2004 episode corresponds to the first stimulation of GPK4. 9300 m3 of water were injected during the test at a constant flowrate of 30 l/s, with peaks up to 45 l/s. A low flow injection test of GPK4 was performed before the stimulation to evaluate the initial injectivity of the well. The data from the injection test are included too.

Dates of the 2004 hydraulic programme:

- GPK4 low flow injection: from 10:38 08/09/2004 to 10:00 12/09/2004.

- GPK4 stimulation: from 08:32 13/09/2004 to 20:00 16/09/2004.

The Episode contains the following datasets:

- Microseismic catalogue of the downhole network by B.C. Dyer - Soultz-sous-Forêts 2004 Stimulation ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Catalogue_downhole );

- Microseismic downhole network - Soultz-sous-Forêts 2004 and 2005 Stimulations ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Downhole_network );

- Seismological waveforms - Soultz-sous-Forêts 2004 Stimulations ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Waveforms );

- Hydraulic data - Soultz-sous-Forêts 2004 Stimulation ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-Hydraulic );

- Velocity model and station corrections used by B.C. Dyer to locate seismic events recorded by the downhole network - Soultz-sous-Forêts 2004 and 2005 Episodes ( https://cdgp.u-strasbg.fr/geonetwork/srv/eng/catalog.search#/metadata/SSFS2004-velocity_model_downhole );