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> Yeah I know drilling through ~8-10 kilometers of rock is kinda hard… they know, they tried, maybe it now is a good political climate to try again? The Finnis
by distances 11mo ago
> Yeah I know drilling through ~8-10 kilometers of rock is kinda hard… they know, they tried, maybe it now is a good political climate to try again?
The Finnish 7 kilometer geothermal drilling failed commercially, I guess that's what you're referring to. Is there any reason to assume drilling deeper would work?
Ref. https://fi.wikipedia.org/wiki/Otaniemen_syv%C3%A4rei%C3%A4t https://fi.wikipedia.org/wiki/Otaniemen_syv%C3%A4rei%C3%A4t
- baq 11mo agoYeah, that’s the one. Economics of this are hard - but money is numbers in computers, it’s just a question of how serious the government is with getting it done - physics-wise it gets like 10-15C warmer with every km, which is important for the delta T obviously. I know nothing about drilling the extra couple km, though, only assuming it can be done with enough engineering.
- distances 11mo agoI understood that temperature wasn't the problem. How it works is that you pump water into one well, and get it out from an adjacent one. The main problem was permeability, they couldn't get the necessary flow rate between the wells.
- baq 11mo agoAh good to know, I for some reason thought it wasn't hot enough. Sounds like they need to figure out horizontal drilling 8km deep in volcanic rock.