Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Collection

The 1996 hydraulic programme at GPK‑2 included a production test, a major re‑stimulation injecting 28 000 m³ at rates up to 78 L/s, a stepped injectivity test, and two short circulation experiments between GPK‑2 and GPK‑1. Around 7 500 microseismic events were detected, with about 5 700 successfully located.

Soultz-sous-Forêts

Aug. 14, 1996 - Oct. 30, 1996

Production test / Hydraulic Stimulation / Stepped Injection Test

Last updated on July 27, 2026

Flow logs - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Flow logs from GPK1 and GPK2 were recorded during the 1996 Soultz‑sous‑Forêts hydraulic programme, documenting depth‑dependent flow profiles (depth in m, flow in L/s) over multiple injection and circulation phases. Each file header contains the detailed acquisition parameters.

Soultz-sous-Forêts

Sept. 19, 1996 - Oct. 19, 1996

geophysics

Last updated on June 15, 2026

Hydraulic data - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Hydraulic data from GPK2, GPK1, and EPS1 were recorded during the 1996 Soultz‑sous‑Forêts hydraulic programme, covering production, stimulation, stepped‑injection, and two circulation tests. Five datasets document wellhead pressure, flowrate, temperature, and related hydraulic parameters, with full metadata provided in each file header.

Soultz-sous-Forêts

Aug. 14, 1996 - Oct. 30, 1996

Hydraulic

Last updated on June 15, 2026

Microseismic catalogue with moment magnitude of the downhole network from CSMA - Soultz-sous-Forêts 1996 Stimulation

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Microseismic catalogue of 3464 events recorded by the downhole network during the 1996 Soultz‑sous‑Forêts stimulation. The dataset covers only the stimulation phase and a few days after, with almost no events at low flow rates and a strong increase in seismicity during the 78 L/s injection stage.

Soultz-sous-Forêts

Sept. 22, 1996 - Sept. 28, 1996

Seismology

Last updated on June 15, 2026

Microseismic downhole network - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

In 1996, three CSMA 4‑component accelerometers (in wells 4550, 4601, 4616) and one hydrophone (in EPS1) were deployed for the Soultz microseismic network. Sensors were not grouted.

Soultz-sous-Forêts

1996

Seismology

Last updated on June 15, 2026

Temperature logs - Soultz-sous-Forêts 1996 Stimulation and Hydraulic Tests

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Temperature logs from GPK1 and GPK2 were recorded during the 1996 Soultz‑sous‑Forêts hydraulic programme, documenting depth‑dependent temperature profiles (depth in meters, temperature in °C). Measurements were acquired on multiple dates in September–October 1996, with full acquisition details provided in each file header.

Soultz-sous-Forêts

Sept. 9, 1996 - Oct. 19, 1996

geophysics

Last updated on June 15, 2026

Catalogue with hydraulic data from Drif et al.(2024)- Soultz-sous-Forêts 1996 Stimulation

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Hourly hydraulic–seismic catalogue for the 1996 Soultz stimulation, starting 18/09/1996 12:00. It reports flowrate, injected volume, hydraulic energy, and the corresponding seismic response (event depth, cumulative moment, radiated and faulting energies) to evaluate how injected hydraulic energy converts into seismic energy, following Drif et al. (2024).

Soultz-sous-Forêts

1996

Hydraulic

Last updated on June 15, 2026

Microseismic catalogue with seismic moment and moment magnitude from Drif et al.(2024) - Soultz-sous-Forêts 1996 Stimulation

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

Microseismic catalogue of the 1996 Soultz‑sous‑Forêts stimulation, listing events with location, CSMA moment magnitude, and recalculated seismic moment and moment magnitude. The dataset is derived from the CSMA 1996 downhole catalogue and reprocessed following Drif et al. (2024).

Soultz-sous-Forêts

Sept. 22, 1996 - Sept. 28, 1996

Seismology

Last updated on June 15, 2026

Petrophysical properties - Soultz-sous-Forêts

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

This dataset compiles petrophysical properties of Soultz‑sous‑Forêts geothermal samples, gathered by Prof. Michael J. Heap from published studies. It includes lithology, depth, fractures, porosity, velocities, permeability, mechanical properties, and the reference for each sample.

Soultz-sous-Forêts

2018

physical property

Last updated on June 11, 2026

GeORG 3D Geological Model—Soultz-sous-Forêts

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

The GeORG project provides a 3D geological model of the Upper Rhine Graben. The BRGM distributes the French section, from which a 10 km cut‑out around Soultz‑sous‑Forêts was extracted, including major lithological interfaces and faults.

Soultz-sous-Forêts

2012 - 2014

Model

Last updated on June 11, 2026

Geological sections from GeORG- Soultz-sous-Forêts

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

The GeORG project (2008–2012) built a 3D geological model of the Upper Rhine Graben, providing a full geoscientific database with maps, temperature models, and geological cross‑sections.

Soultz-sous-Forêts

2008 - 2012

Geology

Last updated on June 2, 2026

GPK2 well

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

GPK2, drilled south of GPK1, was the third geothermal well at Soultz. Initially completed to 3900 m in 1995, it was later deepened to 5084 m to reach the ~200 °C reservoir for power production.

Soultz-sous-Forêts

1995 - 2003

Geology

Last updated on May 29, 2026

GPK1 well

Dataset in collection Episode: 1996 Stimulation and Hydraulic Tests Soultz-sous-Forêts

GPK1, drilled in 1987 as the first geothermal well at Soultz‑sous‑Forêts, initially reached 2000 m (140 °C) before being deepened to 3600 m in 1992 (160 °C).

Soultz-sous-Forêts

1993

Geology

Last updated on May 28, 2026