Bedretto, Switzerland

Bedretto, Switzerland

The Bedretto project wants to show that the construction of a heat exchanger that is sustainable over several decades can be planned and controlled with the aid of hydraulic stimulation processes. The experiments will be carried out on larger scales (hundreds of meters) compared to the Grimsel ISC project (tens of meters). The larger scale implicates longer boreholes, which allow more realistic experiments to be carried out, applying different stimulation concepts.

Similar to other projects, the Bedretto project will perform in-situ stimulation concepts tests while monitoring hydro-seismo-mechanical key parameters at a high spatial resolution. The addressed questions are:

  1. Which stimulation concepts are appropriate for enhancing the permeability by orders of magnitudes while minimizing induced seismicity?
  2. What are the relationships between the hydro-mechanical response, the stimulation concept, permeability creation, effective porosity, and induced seismicity?
  3. How can micro-seismicity be minimized?
  4. What are the heat exchanger properties of the reservoir?
Operator operator-logo

Operator of Bedretto: ETH Zurich

Responsible DESTRESS Partner: Geo-Energie Suisse AG

Work Package No

5

Location

Bedretto Valley, Canton Ticino, Switzerland

Construction Year

2018/2019

Foreseen Stimulation Techniques stimulation-logo

Multi-zonal stimulation

Type of Use

Demonstration of multi-zonal stimulation concept

Soil Condition

Fractured granite

Production Horizon

Prove of concept

Upper Depth (m)

1000 m

Thickness (m)

ca. 100 m

T (°C)

14°C

Salinity (g/l)

low

Contact

Dr. Peter Meier (CEO)
Geo-Energie Suisse AG
Reitergasse 11
8004 Zürich
Switzerland

Phone: +41 (0)79 248 48 65
E-mail: p.meier@geo-energie.ch

http://www.geo-energie.ch