Drilling Rig Classification
There are many types and designs of drilling rigs, with many drilling rigs capable of switching or combining different drilling technologies as needed. Drilling rigs can be described using any of the following attributes:
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Famous quotes containing the word drilling:
“Don’t spend your time in drilling soldiers, who may turn out hirelings after all, but give to undrilled peasantry a country to fight for.”
—Henry David Thoreau (1817–1862)