GDE Geotechnical is the Group’s specialised geotechnical drilling division, that focuses on and delivers high-specification drilling services to the infrastructure, construction, and environmental industries.

The Geotechnical Drilling division specialises in deep-hole and directional drilling services at the Site Investigation stage, whether on land or at marine sites. With an in-depth knowledge of client’s requirements GDE Geotechnical is able to provide support at every stage of the process; from survey planning, to the acquisition of samples and to the interpretation of data.


  • Soil Drilling with typical borehole sizes
  • Near-shore and Offshore Investigation
  • Undisturbed sample recovery
  • Rock coring via triple-tube diamond coring
  • Vane Shear Tests
  • Standard & Cone Penetration Tests
  • In-Situ Permeability Tests
  • Pressure meter Testing
  • Packer Tests
  • Seismic CPT

The GDE Geotechnical team understands the importance of providing only the highest quality and accurate data for our clients. They are committed not just in word but also through actions, as they operate with professionalism and efficiency like other divisions within the GDE Group.