Hollow stem auger drilling is a proven and relatively inexpensive technique for a wide range of environmental and geotechnical applications including: sampling, installation of monitoring wells and data collection instruments, and subsurface improvements. Hollow stem auger drilling employs flighted tubing (augers), a cutter head and rotation to advance through the formation and remove the drill cuttings. Different cutter head designs can be utilized based on geology. Soil samples are easily obtained by lowering and advancing a variety of different sized split spoon samplers through the hollow stem augers and out in front of the bit face.
This technology is ideal for drilling through unconsolidated alluvial deposits such as sands, silts and clays. The augers maintain bore hole integrity and facilitate soil sampling and well installation. It is the perfect application for environmental sampling because there are no additives, such as mud, used during the drilling process. Depth limitations will vary based on lithology. We have achieved depths to 450 feet using 3 ¼ inch ID augers.
- COST EFFECTIVE Auger is a cost-effective drilling method with high productivity in setting relatively shallow wells in unconsolidated materials.
- SAMPLING Auger eliminates down hole contamination of samples by fluids.
- VERSATILITY The auger rig platform is convertible for multiple applications on a single job.