Right now, an exciting event titled "Borehole Thermal Energy Systems (BTES) in Crystalline Basement Rocks" is underway in Espoo. Hosted by the Geological Survey of Finland (GTK), this gathering brings together geothermal specialists from the Geological Survey of Estonia (EGT) to delve into a wide array of captivating topics, ranging from shallow (<500m) to deep (>3000m) geothermal energy.

The agenda covers systems predominantly found in crystalline rocks, with a glance at those in Quaternary sediments as well. Participants are treated to case studies and examples from both Finland and beyond. Discussions have been lively, touching on subjects like the impact of fluid flow on geothermal productivity, the influence of fractures and alteration, and the pros and cons of systems at various depths.

One of the highlights has been exploring data collection techniques such as Distributed Temperature Sensing (DTS) and Thermal Response Tests (TRT). Attendees have also delved into modelling, dimensioning, and many other topics. With so much ground to cover, there's a palpable sense of excitement and curiosity among participants.

This training course, designed into three blocks, covers a comprehensive range of topics essential for understanding and implementing BTES. From thermogeological parameters to techno-economic characteristics and fieldwork techniques, it equips participants with valuable insights and practical knowledge.

As we dive deeper into the event, it's clear that exchanging ideas and expertise will greatly benefit the geothermal energy community. Stay tuned for more updates as we explore the fascinating BTES world in crystalline basement rocks.

We will write more in-depth about what we learned and the discussions after the event. So stay tuned for new posts!