terms:rathole
(1) A hole in the rig floor 30 to 35 feet deep. Lined with casing that projects above the floor into which the kelly is placed when hoisting operations are in progress.
(2) A hole of a diameter smaller than the main hole. It is drilled in the bottom of the main hole.
terms/rathole.txt · Last modified: 2023/11/22 08:42 by 127.0.0.1