Rig:

Terms Related to Rig

• Mast

  A portable derrick that is capable of being erected as a unit, as distinguished from a standard derrick that cannot be raised to a working ...

• Substructure

  The foundation on which the derrick or mast and usually the drawworks sit. It contains space for storage and well-control equipment.

• Production rig

  A portable servicing or workover outfit, usually mounted on wheels and self-propelled. A well servicing unit consists of a hoist and engine mounted on a ...

• Modular-spaced workover rig

  Workover equipment designed in equipment packages or modules that are light enough to be lifted onto an offshore platform by a platform crane. In most ...

• Portable mast

  A mast mounted on a truck and capable of being erected as a single unit. See telescoping derrick.

• V-door

  An opening at floor level in a side of a derrick or mast. The v-door is opposite the drawworks and is used as an entry ...

• Workover rig

  See production rig. Also see pulling unit.