UrbanGeo
In the very heart of Stockholm, a building needed heating and cooling. This project required a method that provided a safe working environment, was environmentally friendly and could drill straight holes.
Stockholm, Sweden
Wessman Drilling Solutions
W100 Hammer
Background
In central Stockholm, Sweden, close to the square Stureplan, a building needed heating and cooling. The solution was to install geo-energy. The building is located in the heart of Stockholm and there are constantly a lot of people in motion and old buildings sensitive to vibrations nearby. No dust, no vibration, minimal noise level i.e. no significant disturbance was allowed in this project.
The contractor choice
The chosen contractor for the geo-drilling was Wessman Drilling Solutions. The CEO Per Wessman says that LKAB Wassara and their water-powered DTH hammer was chosen for reasons like safety, quality, environmentally friendly and hole straightness. The drilling result turned out very well.
A successful pilot project for the client
A large praise is to be given to the client, Hufvudstaden, who dared to invest in, for them, an untested technology and to let Wessman Drilling Solutions do the pilot project.
The location of the building is the most central one can imagine and there has been full regular operation in the house throughout the drilling. When it comes to install geo-energy this was Hufvudstaden’s first project.
The good outcome will result in more geo-energy drilling in the future with equally complex conditions.
| DTH Hammer | W100 Hammer |
| Drill bit | Ø 115 mm |
| Drill rods | Ø 89 mm, length 1,0 m |
| Rig | Hytte 202 (Casagrande) |
| Water pump | WASP 120E |
| Borehole length | 350 m |
| Scope of drilling | 7 200 meters |
| Geologic formation | Rock (granite) |
| Project year | 2016 |
See our featured Case studies below to learn what real world UrbanGeo-projects our technology as been a part of.
