Drilling rig classification-By height

Drilling rig classification-By height

(All rigs drill with only a single pipe. Rigs are differentiated by how many connected pipe they are able to "stand" in the derrick when needing to temporarily remove the drill pipe from the hole. Typically this is done when changing a drill bit or when "logging" the well.)

• Single — can pull only single drill pipes. The presence or absence of vertical pipe racking "fingers" varies from rig to rig.
• Double — can hold a stand of pipe in the derrick consisting of two connected drill pipes, called a "double stand".
• Triple — can hold a stand of pipe in the derrick consisting of three connected drill pipes, called a "triple stand".