Hello everyone,
I have a question regarding two planned deep geothermal boreholes, each with a depth of 60 m (197 feet), located in the area of the driveway.
Is it possible to place the boreholes within a paved driveway area, or can problems or efficiency losses be expected due to the paving stones applied afterwards? What is your assessment of this situation?
I would appreciate your feedback. Thank you in advance for your responses!
Best regards
I have a question regarding two planned deep geothermal boreholes, each with a depth of 60 m (197 feet), located in the area of the driveway.
Is it possible to place the boreholes within a paved driveway area, or can problems or efficiency losses be expected due to the paving stones applied afterwards? What is your assessment of this situation?
I would appreciate your feedback. Thank you in advance for your responses!
Best regards
B
Bau-Schmidt3 Oct 2017 20:12That should not be a problem.
That is possible, but the minimum distance to the property line is 3m (10 feet), to the house is 3m (10 feet), and the probes must be at least 6m (20 feet) apart from each other.
What forces you to drill twice 60m (200 feet) instead of drilling once deeper? That would save a good amount of money.
What forces you to drill twice 60m (200 feet) instead of drilling once deeper? That would save a good amount of money.
Thank you for the feedback so far.
I am not fundamentally required to have two boreholes instead of one. This is just the current recommendation from the drilling company. The drilling company is apparently only allowed to drill up to a maximum of 99.9 meters (328 feet). My question regarding this issue is whether one borehole of 99.9 meters (328 feet) can be considered energetically equivalent to two boreholes of 60 meters (197 feet) each. If so, I would approach the drilling company again and request one borehole of 99.9 meters (328 feet) instead of the two planned boreholes of 60 meters (197 feet) each.
I also need to point out that the two planned boreholes are not 6 meters (20 feet) apart, but only 5 meters (16 feet). Is this a significant problem or rather negligible?
I am not fundamentally required to have two boreholes instead of one. This is just the current recommendation from the drilling company. The drilling company is apparently only allowed to drill up to a maximum of 99.9 meters (328 feet). My question regarding this issue is whether one borehole of 99.9 meters (328 feet) can be considered energetically equivalent to two boreholes of 60 meters (197 feet) each. If so, I would approach the drilling company again and request one borehole of 99.9 meters (328 feet) instead of the two planned boreholes of 60 meters (197 feet) each.
I also need to point out that the two planned boreholes are not 6 meters (20 feet) apart, but only 5 meters (16 feet). Is this a significant problem or rather negligible?
Starting from 100m (330 feet), an additional permit is required, and that’s it. Also, the extraction efficiency is better at shallower depths. So yes, overall fewer drilling meters. Additionally, the drill does not need to be repositioned or sealed twice, etc. It also eliminates the need for the shaft with the couplings when using multiple probes.
It’s not inherently a problem. If the drilling cost is included as a flat rate, it’s fine. But if you have to pay per meter, look for another solution.
The 6m (20 feet) should be known by the drilling specialist. The drilling itself still needs to be applied for, so I’m not sure if this could become an issue.
It’s not inherently a problem. If the drilling cost is included as a flat rate, it’s fine. But if you have to pay per meter, look for another solution.
The 6m (20 feet) should be known by the drilling specialist. The drilling itself still needs to be applied for, so I’m not sure if this could become an issue.
Hello,
We had a borehole drilled 132 meters (432 feet) deep in our driveway and then paved over it. It posed no problem at all.
We also had the option between one or two boreholes. Having two boreholes would have easily added an extra 1500 to 2000 euros in costs.
As far as I know, for depths beyond 100 meters (328 feet), you only need an additional permit, which is usually not difficult to obtain. It’s possible that the drilling company handles this themselves.
Don’t let anyone take advantage of you, and it’s a good idea to ask another drilling company whether having just one borehole would be an issue.
Regards,
Michael
We had a borehole drilled 132 meters (432 feet) deep in our driveway and then paved over it. It posed no problem at all.
We also had the option between one or two boreholes. Having two boreholes would have easily added an extra 1500 to 2000 euros in costs.
As far as I know, for depths beyond 100 meters (328 feet), you only need an additional permit, which is usually not difficult to obtain. It’s possible that the drilling company handles this themselves.
Don’t let anyone take advantage of you, and it’s a good idea to ask another drilling company whether having just one borehole would be an issue.
Regards,
Michael