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What is the Top Tension Drilling Riser System?

asked Oct 14, 2014 in Drilling by bbenoit (710 points)
What is the Top Tension Drilling Riser (TTDR) System and its associated equipment?

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answered Oct 14, 2014 by bxander (1,180 points)

The Top Tension Drilling Riser (TTDR) forms a single high-pressure barrier for containing well bore fluids and pressures between the subsea wellhead and the surface Blowout Preventer (BOP).

The following is a list of equipment to be supplied by the equipment supplier:

  • Subsea external wellhead connector assembly
  • Stress joint
  • Riser joints
  • Riser pup joints, as required
  • Buoyancy, as required
  • Keel joint assembly, as required
  • BOP adapter/head
  • Drilling riser tensioner
  • Riser handling equipment
  • Riser tools and accessories
  • Riser running spider

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