V-Door Opening
Drilling EquipmentAn opening at floor level in a side of a derrick or mast, opposite the drawworks, used as an entry to bring in drill pipe, casing, and other tools from the catwalk.
An opening at floor level in a side of a derrick or mast, opposite the drawworks, used as an entry to bring in drill pipe, casing, and other tools from the catwalk.