🔍 Key Concepts

• Riser tensioning system purpose on a drilling unit • How a telescoping joint works between the rig and the subsea BOP stack • Which part of the telescoping joint moves vertically to maintain tension

💭 Think About

• Visualize the riser string from the rig floor down to the seabed. Where are the tensioners connected so they can keep the riser in tension while the rig heaves? • On a telescoping joint, think about which member must be pulled up and down by the wire ropes as the vessel moves. • Ask yourself which component is designed to carry the tension load from the rig motion rather than simply connect to the wellhead or BOP.

✅ Before You Answer

• Identify which choice is actually part of the telescoping joint rather than a seabed or rigid connector. • Decide which barrel (inner vs outer) is fixed to the vessel and which is attached to the lower riser string. • Confirm which member must be directly linked to the tensioner wire ropes so that vessel motion is absorbed without over‑stressing the riser.