Experimentor

The GEOTREF project seeks to implement and exploit micro-seismic measures, which, on fractured reservoirs are still very poorly exploited. These will make it possible to improve knowledge about:

  • The geomechanical characteristics of fractured reservoirs,
  • Their geomechanical behaviour based on the flow conditions,
  • Preferential flow paths in fractured environments whose evolution over time, according to physico-chemical phenomena, is a major concern in high geothermal energy.

Beyond establishing a better understanding and characterization of fractured geothermal reservoirs, it will also be necessary to address micro-seismic monitoring in terms of risk as well as the exploitation of the deposit.

The GEOTREF project therefore aims to develop methods for the recovery of the micro-seismic data in geothermal energy. To achieve this, a micro-seismic experimentation phase is planned to test the equipment and methods to be transposed in a second phase on the demonstrator in Guadeloupe.

 

Location of Vauvert salt site

Location of Vauvert salt site

The Vauvert salt mine was selected for this micro-seismic experiment. The nature of induced seismicity (magnitude <0), the depth of the objectives (approximately 2000 m) and the availability of deep wells, make the Vauvert salt mine a unique test site for the study and the development of “passive seismic” techniques.

The provision of this site by KEM ONE company will make it possible to deploy:

  • Deep well sensors,
  • Subsurface antennas,
  • Subsurface sensors.

The analysis of induced micro-seismic data will then be transposed for the characterization and modelling of the fracturing.

Vauvert salt site

Vauvert salt site