Which component rises above the substructure and houses the crown block and draw works?

Which component rises above the substructure and houses the crown block and draw works?

• A. Jackup Rig
• B. Drill Floor
• C. Derrick
• D. Drawworks

Answer: (C)

The derrick is the tall vertical framework that rises above the substructure on a drilling rig. It provides the space and support for the crown block at its top and the draw works, which power the hoisting of the drill string. The crown block and draw works are fixed to the top of the derrick as part of the hoisting system, so this structure must rise above the substructure to house them. The drill floor sits at the base where the crew handles pipe, the substructure is the lower foundation, a jackup rig refers to a different rig type with legs, and the drawworks is the hoisting drum assembly, not the elevated framework itself.

The derrick is the tall vertical framework that rises above the substructure on a drilling rig. It provides the space and support for the crown block at its top and the draw works, which power the hoisting of the drill string. The crown block and draw works are fixed to the top of the derrick as part of the hoisting system, so this structure must rise above the substructure to house them. The drill floor sits at the base where the crew handles pipe, the substructure is the lower foundation, a jackup rig refers to a different rig type with legs, and the drawworks is the hoisting drum assembly, not the elevated framework itself.