Definition(s)
Rat Hole
“Rat hole” means a shallow hole into which the kelly and swivel are placed when hoisting operations are in progress.
Source: Division of Mineral Resources Management – Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. Regulations
Rat Hole
“Rathole” or “mousehole” means the temporary storage space that is used to store the kelly or drill pipe while adding a new section of pipe to the drill string at some rotary drilling rigs.
Source: Division of Mineral Resources Management – Oil and Gas, Ohio Administrative Code, Chapter 1501:9, January 2012. Regulations