boring
drilling a hole, tunnel, or well in the earth
offshore drilling
mechanical process where a wellbore is drilled below the seabed
well drilling
method of extracting a natural resource
low-clearance drilling
drilling of holes in environments with low overhead clearance
reverse circulation drilling
a ground drilling technique where compressed air or liquid is used to extract cuttings through the centre of a boring device
scientific drilling
way for scientists to probe the Earth's sediments, crust, and upper mantle