Tieback connectors are the crucial element providing a robust and reliable connection between the subsea well and the top-tensioned riser (TTR) systems, maintaining pressure integrity while transferring the dynamic loads from the riser through the subsea wellheads to the seafloor. The tieback connector has an annular piston design, which limits the maximum OD to 32.50 in. Hydraulic pressure acting on the piston activates collet segments similar to those in a traditional collet connector.
In the locked position, the segments close around the 18 3/4-in wellhead mandrel. The Cameron collet connector technology, in a high-capacity and compact envelope, has been proven to deliver best-in-class bending, tensile, and fatigue resistance capabilities in more than 2,000 subsea well applications.
The reduced OD allows installation through standard rotary tables without the need to modify the drill floor setup, speeding up installation time and reducing HSE and risk exposure. The collet design features direct load-transfer paths through high-strength structural members, large misalignment tolerance during installation (or disconnect), and the ability to perform multiple make-break cycles when deployed subsea. These features translate to superior fatigue and operation performance and allow for a large installation and operational window, resulting in faster run times and lower rig and operational downtime.