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Drill Rig Selection

John Huang, Ph.D., PE and John Poullain, PE

This three hour online course discusses the commonly used equipment and methods used for conventional drilling and sampling operations. The various types of drill rigs, drill bits, drive methods and equipment and apparatus such as casings used to drill and stabilize boreholes are presented. Factors that determine the selection of the drill rig such as type of subsurface materials, condition of rock, accessibility and water table are discussed. Visual observations and other measures used during drilling and sample recovery are considered. The types of equipment and drilling methods covered in the course include solid-stem, hollow-stem flight augers, hammer drills, rotating wash, churn drills, bucket augers and hand auger boring. Guidelines for sampling methods are discussed with brief coverage of sampling devices. Oil and gas well drill rigs are not covered here.

Drill rigs are used for many purposes but all essentially bore holes in the ground. They are used to drill water wells, and oil and gas wells, and to sample subsurface soil and rock formations. Drill rigs are used to perform subsurface construction such as utilities, tunnels, and cast in place piers. They can be mounted on trucks, trailers, tractors, skids, and permanently mounted on land or marine-based platforms or piles. Drill rigs are classified by the power source, i.e. electric, hydraulic, pneumatic or mechanical, by the length of pipe, and methods of drilling, i.e. rotation and/or percussion. Drill types include auger, cable tool, direct push, hydraulic-rotary or percussion rotary drilling.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.