United Downs Deep Geothermal Project

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Roy Morton
50.2% (Neutral)
Newbie Topic Starter

6 years ago

Things are moving at the site with the arrival of the drilling rig.
The rig is still in the process of setting up and drilling is scheduled to start very soon.
The first hole will be 24" diameter and eventually reducing to 8" at the final destination.
2 holes will be drilled. The injection hole will be 2.5km (1.55 miles) deep, with the production hole deeper at 4.5km (2.8 Miles) deep.
There's details about the project online but not a great deal. Information about 'Fracking' of the target zone has not been mentioned. ::)

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"You Chinese think of everything!"
"But I''m not Chinese!"
"Then you must have forgotten something!"

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Roy Morton
50.2% (Neutral)
Newbie Topic Starter

6 years ago

They propose to eventually use water from the old mines in the area, which they would surely need to buffer, if only for the sake of their equipment.
I wonder what other additives will need to be thrown in to ensure that the fractures don't gum up? There's a lot of dissolved solids in mine water, especially once you start moving the stuff around.

"You Chinese think of everything!"
"But I''m not Chinese!"
"Then you must have forgotten something!"

Nicho
50.2% (Neutral)
Newbie

6 years ago

Are you sure you're using the term 'fluccans' in the right context? My understanding is that 'a fluccan' is a lens of clayey material in the country-rock, often found in the lode but not necessarily, and in places in faults or crosscourses. But I'm not aware that a fluccan necessarily goes the full depth or length of a fault, where the most likely material would be brecciated country rocks and lenses of fluccan, with loads of water of course.

Nicho
50.2% (Neutral)
Newbie

6 years ago

Actually, they have mentioned it, quietly of course, as they have a system of monitors set up to monitor any minor seismic activity.

Morlock
50.2% (Neutral)
Newbie

6 years ago

You have mail.:)

Nicho
50.2% (Neutral)
Newbie

6 years ago

Ah, ok. I've only ever come across it describing clay-filled lenses or pockets, either referred to as 'fluccan' or 'a fluccan', depending, I suppose, on how large. Sometimes called 'floocan'? Excellent example in a long level near St Neot.