Mandrel Casing Hangers
This article describes the mandrel casing hanger make-up and running proedures.
Mandrel Casing Hanger Make-up
The “total” hanger will consist of:
- bottom pupjoint
- MCH (Mandrel Casing Hanger)
- top pupjoint.
The bottom pupjoint has to be made-up on the MCH by the bucking machine to the optimum torque.
The top pupjoint should be made up to half the optimum make-up torque to enable to back out the pupjoint easily.
The 5ft top pupjoint is only installed as . . .