Drilling & Excavation

We have recently taken delivery of our  bespoke designed geothermal drilling rig  to offer greater flexibility to our customer’s needs. We are the only company in Wales to offer this service, with full geothermal heat pump installation.

 

We can drill closed loop boreholes up to depths of a 100m being the normal depth, with single or double loop installations. We then install PE 100 pipe with either 32mm to 40mm diameter.  All loops are flow and pressure tested before being sealed with a geothermal grout. This ensures the correct thermal properties of the loop in the borehole, it also avoids ground contamination of local water sources.

 

The grout we use is a Thermal Bentonite Grout combined as required with Silica Sands depending on the specification and geological requirements of the ground.  This is  mixed using our specialised grout mixer and pumped into the borehole to seal the complete borehole from bottom to ground level.

We can also drill open loop boreholes with sizes and depths being drilled to suit the geothermal requirements of the project.

Typical drilling methods we can use are air, air/mist, water  and drilling muds.  We can also offer simultaneous drilling & casing methods for poor ground conditions with the final borehole finished to 120m plus.

Borehole sizes vary from 115mm upwards.  This is complemented with our ancillary equipment as required for the complete installation of the works.

We also operate pipework teams for the installation of the borehole loops back to the clients' buildings and manifolds ready for connection to the heating system.