A set of clamps that are latched onto the drill pipe to allow the driller to raise or lower the drill string out of or into the hole are the _________________.
A
lifts
B
collars
C
elevators
D
clamps
E
İlgili Sorular
You are transporting dangerous cargo on your vessel. The regulations require you to __________.What is the maximum number of crew members that may be berthed in one room aboard your cargo vessel?The "iron mike" is a(n) __________.Spaces containing batteries require good ventilation§because _______.A jackup drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound ...