top drive
noun1
A mechanical device on a drilling rig that provides clockwise torque to the drill string to drill a borehole.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A mechanical device on a drilling rig that provides clockwise torque to the drill string to drill a borehole.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
Do you accept non-essential analytics cookies?