18 July 2017

Hoisting drum

The large flanged spool in the drawworks on which the hoisting cable is wound. See drawworks.
18 July 2017

Hole

Usually refers to the wellbore.
18 July 2017

Hook

A large, hook-shaped device from which the swivel is suspended. It is designed to carry maximum loads ranging from 100 to 650 tons (90 to 590 […]
18 July 2017

Hook horsepower

The horsepower equivalent for any given hook load and hoisting speed.