Derrick In Drilling Rigs Complete Guide
The derrick and substructure play an essential role in drilling rig operations. The derrick provides the height necessary for the hoisting system to raise and lower the pipe. The greater the height, the longer the section of pipe that you can handle and, thus, the faster a long string of pipe you can run into or remove from the hole.

Derricks can handle sections (stands), which have a composition of two, three, or four joints of drill pipe.
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