EPS1 well

Dataset in collection Episode: 1993 Stimulation Soultz-sous-Forêts

EPS‑1 was deepened and cored in 1990–1991 to study the granite reservoir. Despite strong deviation, coring from 930 to 2227 m produced valuable scientific data.

Soultz-sous-Forêts

1990 - 1991

Geology

Last updated on June 11, 2026

4601 well

Dataset

The 4601 oil well (drilled in 1951) was later deepened to 1604 m for the Soultz‑sous‑Forêts geothermal project, where a seismic probe monitored induced microseismicity.

Soultz-sous-Forêts

1990 - 1991

Geology

Last updated on June 11, 2026

4550 well

Dataset

The 4550 oil well (1949–1950) was deepened to 1500 m in 1990 for the Soultz‑sous‑Forêts geothermal project, where a seismic probe monitored induced microseismicity.

Soultz-sous-Forêts

1949 - 1950

Geology

Last updated on June 11, 2026

4616 well

Dataset

The 4616 oil well (1950–1951) was reused as a seismic observation well for the Soultz‑sous‑Forêts project and was deepened to 1414 m in 1990.

Soultz-sous-Forêts

1950 - 1951

Geology

Last updated on June 11, 2026

OPS4 well

Dataset

The OPS‑4 well was drilled in 2000 to enhance seismic monitoring at the Soultz‑sous‑Forêts geothermal site and reached a depth of 1537 m after two months.

Soultz-sous-Forêts

2000

Geology

Last updated on June 11, 2026

RIT-GRT1 well

Dataset in collection Episode: ECOGI geothermal project at Rittershoffen - development phase

GRT‑1 is the first well drilled for the ECOGI geothermal project at Rittershoffen.

Rittershoffen

2014

Geology

Last updated on June 10, 2026

RIT-GRT2 well

Dataset in collection Episode: ECOGI geothermal project at Rittershoffen - development phase

GRT‑2 is the second well of the ECOGI geothermal project at Rittershoffen.

Rittershoffen

2014

Geology

Last updated on June 10, 2026

VDH-GT1 well

Dataset in collection Episode: Geoven geothermal project at Vendenheim

VDH‑GT1, the first well of the Geoven geothermal project, was drilled between 2017 and 2020 to a final depth of 5447 m and will serve as the production well.

Vendenheim

2018

Geology

Last updated on June 10, 2026

VDH-GT2 well

Dataset in collection Episode: Geoven geothermal project at Vendenheim

VDH‑GT2, second well of the Geoven project, was drilled between 2018 and 2020 to 6312 m (5011 m TVD) and will serve as the injection well.

Vendenheim

2018 - 2019

Geology

Last updated on June 10, 2026

Geological sections from GeORG- Soultz-sous-Forêts

Dataset

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

GPK3 well

Dataset

GPK3, drilled in 2002, was designed to complete the GPK2, GPK3, GPK4 geothermal triplet and reach the deeper, hotter reservoir at ~5 km depth (about 200 °C).

Soultz-sous-Forêts

2002

Geology

Last updated on May 29, 2026

GPK2 well

Dataset in collection Episode: 1995 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

GPK4 well

Dataset

GPK4, drilled in 2004, was designed to complete the deep geothermal triplet with GPK2 and GPK3, targeting the ~5000 m / 200 °C reservoir. The well reaches 5260 m.

Soultz-sous-Forêts

2004

Geology

Last updated on May 29, 2026

GPK1 well

Dataset

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