Multi-purpose Drilling Rigs

  • Multi-Purpose2 Our Comacchio and Fraste multi-purpose drilling rigs are ideal for geotechnical and geo-environmental site investigations. The rigs are able to drill boreholes up to 100m in depth.
  • All rigs are fitted with a solid safety cage equipped with emergency stop system. Cages are fully compliant with current HSE legislation. Diesel engines have spark arrestors and permanently fitted chalwyn valves.
  • Rotary coring of hard surfacing in up to 300mm diameter to allow hand pitting.
  • For drilling in soils the Comacchio and Fraste rigs use a dynamic sampling technique and produce high quality fully lined samples.
  • The rigs have a top drive rotary head for coring rock and solid strata. The rigs can use water, air or polymer flush as required.
  • The rotary head can also be operated in a low speed, high torque, gear to allow hollow, or solid stem, augering up to 300mm in diameter. Percussive soil sampling can be undertaken in advance of the auger to obtain lined soil samples.
  • Down the hole hammer (DTHH), tri-cone rock roller and drag bits can be employed for rotary open hole drilling using air or water flush.
  • Three different diameters of temporary steel drilling casing can be used to support the boreholes while drilling and allow clean drilling techniques.
  • Multi-Purpose3The rigs can all undertake standard penetration testing (SPT), with calibration certificates provided upon request, and undisturbed sampling (U70, U100 and UT100).
  • Boreholes can be completed with monitoring wells and instrumentation including monitoring/remediation wells to 150mm diameter, inclinometers, vibrating wire piezometers, pneumatic piezometers and extensometers.
  • All of our multi-purpose rigs are mounted on rubber tracks.