At the Everything Borehole Imaging seminar hosted by the London Petrophysical Society (LPS) on 11 December, Angela Pascarella from TNO presented research findings from the Dutch innovation programme Geo4all. Her presentation focused on geomechanical heterogeneity and thermal cooling in the sandstone geothermal reservoir of Middenmeer (Ennatuurlijk Aardwarmte).
The field test in Middenmeer is part of Work Package 4 (WP4) of Geo4all. A central question in this work package is: where does cooling occur in the subsurface, and what are the implications for seismic safety and reservoir integrity? Using advanced measurement techniques, the natural stress state of the subsurface was mapped – a critical parameter for operators when modelling safe production processes and applying for permits.
Stress and temperature measurements revealed that cooling does not occur uniformly, but is strongly influenced by the geological structure of the reservoir. These insights are valuable when assessing existing wells: can they deliver more heat using the same infrastructure – without requiring additional investments?
- View the presentation abstract
- Watch the presentation
- The stress test was captured on video. Watch the video here.
