Introduction of micro-gravity as standard in geothermal exploration¿

• Unité de recherche: INNOSUISSE
• Numéro de projet: 11950.1 PFIW-IW
• Titre du projet anglais: Introduction of micro-gravity as standard in geothermal exploration¿

Description succincte (Allemand)

Mikrogravimetrie als Standardprospektionsmethode für geothermische Reservoire

Description succincte (Anglais)

Introduction of micro-gravity as standard in geothermal exploration¿

Résumé des résultats (Abstract) (Allemand)

The productivity of a geothermal reservoir depends mainly on the transmissivity of the geological unit. It is a challenge to assess this during exploration. A first step is the assessment of porosity. Inversion of gravity based on 3D geology has revealed the thermal anomaly of Soultz-sous-Forêts. The aim is to further develop this methodology and to introduce it as a standard in the geothermal reservoir exploration in Switzerland.|The innovation is to put the focus on the evaluation of porosity changes in the target zones in combination|with detailed (3D) seismic studies, which reduce the uncertainty in the geological interpretation of gravity|data and thus allow the assessment of density changes due to porosity variation.

Résumé des résultats (Abstract) (Anglais)

The productivity of a geothermal reservoir depends mainly on the transmissivity of the geological unit. It is a challenge to assess this during exploration. A first step is the assessment of porosity. Inversion of gravity based on 3D geology has revealed the thermal anomaly of Soultz-sous-Forêts. The aim is to further develop this methodology and to introduce it as a standard in the geothermal reservoir exploration in Switzerland.|The innovation is to put the focus on the evaluation of porosity changes in the target zones in combination|with detailed (3D) seismic studies, which reduce the uncertainty in the geological interpretation of gravity|data and thus allow the assessment of density changes due to porosity variation.