Geotechnical Drilling

Geotechnical drilling is carried out to determine soil and rock characteristics and groundwater tables. As leaders in this field, our team of specialists regularly encounter major fault lines, glacial valleys and volcanic materials. This means that difficult drilling conditions are all in a days work, and any problems arising are quickly overcome. This is just one of the reasons why we are New Zealand's only result driven geotechnical drilling specialists.

Our geotechnical services and methods of drilling and installation are:

  • Rotary core drilling
  • Rotary mud
  • Sonic drilling
  • Concentrix casing systems
  • Standard penetration tests
  • CPT testing
  • Sampling
  • Hollow stem auger
  • Auger
  • Down hole hammer
  • Air coring
  • Test pits
  • Labour
  • Bore logging
  • Piezometer and Inclinometer installation


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Griffiths Drilling offers a comprehensive range of drilling services. Each service is backed-up with our considerable drilling capability, technical expertise and vast practical experience that comes from operating for over 44 years within the New Zealand drilling industry.

Sonic Drilling Services

Griffiths Drilling have the only dual head sonic drilling rig available in New Zealand. Sonic drilling is up to 4 times faster than traditional methods and there are many other advantages and benefits when you use our newly arrived, XL CRS-F Duo Sonic Rig.

Cone Penetration Test (CPT) Services

Our Cone Penetration Test (CPT) service uses our 2 dedicated CPT rigs. These specialist drilling rigs have been designed and customised specifically to meet the needs and demands of our clients and New Zealand drilling conditions.

Technical Consultancy Services

Our technical consultancy services include dedicated Project Managers, technical support and instrumentation monitoring. We also offer geological and geotechnical services and have access to over 45 years of drilling records and geological information that has proven valuable to our clients.

Other Drilling Services

Our other drilling services include construction and foundation drilling (includes ground anchors and soil nails), water bore and water well drilling, environmental drilling and monitoring and seismic drilling for exploration.

Water Bore Services

We have 50 years experience in drilling water bores. Our water bore drilling and development services are both comprehensive and complete. They include water infrastructure asset management, water bore construction and water bore integrity.