In a recent discussion about his purchase of a Dando Drilling sonic rig, Enviroprobe Service Inc. CEO Tim Gallagher said, “Everyone knew that, at some point, sonic head technology would become important to the environmental and geotechnical drilling sectors.”
Last month, we discussed “nominal diameter” as the term (incorrectly used by drillers) relates to augers, sonic pipe, casing, bits and borehole diameters.