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-GPK 2) 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".