Raeburn Drilling & Geotechnical Ltd is one of the largest and most prominent independent Site Investigation contractors in the U.K.
RDG’s fleet of LS250 Sonic Drilling rigs may look similar to many of its other rotary coring rigs. The main difference is the wide low ground bearing rubber tracks and Sonic drill head. Counter-rotating weights within the head generate high frequency vibratory forces (resonance energy) which act vertically on the drill string. Rotation of the drill string ensures even distribution of energy down to the bit face. This is manipulated by the Lead Driller to optimise sample recovery through reducing friction and permitting the quick advancement of the sample barrel and casing into each formation encountered.
An added advantage of choosing RDG for your Sonic Drilling needs is the uniquely supported ancillary plant. With compressors and water tanks fitted to low ground pressure bearing tracked vehicles, RDG’s LS250 Sonic Drilling rigs are capable of achieving unassisted access which is unprecedented in the Site Investigation industry. RDG has an unrivalled track record in delivering Sonic Drilling services on remote, soft and boggy wind farm sites, environmentally sensitive locations and hilly exposed terrain.
Sonic Drilling offers an overburden drilling system which cases off the borehole on a continuous basis. This has a number of drilling benefits over many traditional techniques including ensuring borehole stability and isolating zones of contamination during the drilling process.
Where drilling in sensitive environs or contaminated land Sonic Drilling offers a safe, clean method of Ground Investigation. The unique way in which the sampled material is extruded directly into the specialised liners ensures Drilling Operatives do not come into contact with potentially contaminated soils.