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What does drilling a Hole for Water cost here in Europe?

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Lord of nothing:

--- Quote ---the ground water is 8-10'C.
--- End quote ---
Well I would only order a Company to drill here if the Data show the could find Natural Thermal Water who is way above "normal" Temp here.

G7PSK:

--- Quote from: Lord of nothing on March 22, 2022, 08:26:44 pm ---
--- Quote ---the piece of land they own
--- End quote ---
Theoretical in my Country its not possible to "own" Something since the Gov. can take the Land who you life away and re purpose it. You also have to pay Tax just for "own" a Land who I would say it more pay Rent to the Gov. But beside of that dont be to political. Sure I know I must apply for an Permit but before I drive the Gov. Employee to insanity I would like know if it is affordable enough or so expensive to not think further.
Sorry I have no idea what something could cost. So before I plan way ahead in the Future its good to know if it is just a dream or it could come true.
Thanks  :-+

--- End quote ---
Here in the UK theoretically  you own the land right down to the centre of the earth, with the catch being if anything valuable is found it belongs to the crown which means you have to pay the government to dig up or otherwise extract what is in the ground you own. You could drill yourself, there are well drilling rigs on Ebay.https://www.ebay.co.uk/itm/274651617730?hash=item3ff28319c2:g:AgMAAOSw~sJgBaqM

Marco:

--- Quote from: Someone on March 25, 2022, 05:35:51 am ---"Effects of Bore Closure at Rotorua, New Zealand"
https://www.geothermal-energy.org/pdf/IGAstandard/Japan/1997/Scott.pdf

--- End quote ---

They could likely have had far greater extraction rates with modern double wall heat exchangers rather than wasteful open systems. Any way, it's ultimately just a question of depth. If you go deep enough the thermal resistance to the core shrinks and the core has defacto infinite energy.

Someone:

--- Quote from: Marco on March 29, 2022, 06:30:51 pm ---
--- Quote from: Someone on March 25, 2022, 05:35:51 am ---"Effects of Bore Closure at Rotorua, New Zealand"
https://www.geothermal-energy.org/pdf/IGAstandard/Japan/1997/Scott.pdf

--- End quote ---
They could likely have had far greater extraction rates with modern double wall heat exchangers rather than wasteful open systems. Any way, it's ultimately just a question of depth. If you go deep enough the thermal resistance to the core shrinks and the core has defacto infinite energy.
--- End quote ---
Its not infinite, there is a fundamental inflow (flux) of energy available, as fancy as you try to analyse it:
"Longevity and power density of intermediate-to-deep geothermal wells in district heating applications"
https://link.springer.com/article/10.1140/epjp/s13360-021-01094-8
Its still energy in < energy out or you're going to run out. Their simple explanation:

--- Quote ---One of the most important things to keep in mind is that, once the well has been depleted, its rather modest ability to recover leads effectively to a single-use solution unless additional charging is provided. This, however, would merely convert the well from a heat source into a heat storage, incurring additional, perhaps significant electricity costs. Hence, in sizing the well, one should consider choosing a configuration which guarantees a sustainable level of longevity and does not require re-drilling of the bore holes every few years.
--- End quote ---

Earths radius: 6,378km
Deepest borehole ever: 12km
Its small angle approximation territory, deeper isnt getting access to more flux, just a larger thermal mass (to deplete). No way is this close to infinite energy, current economic extraction is based around years/decades of useful life.

Marco:

--- Quote from: Someone on March 29, 2022, 10:02:26 pm ---deeper isnt getting access to more flux

--- End quote ---
Of course it does, the volume of rock you can steal flux from before it escapes to space grows quadratically with depth.

Depth is a trade off for area.

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