Stena Drilling is one of the world’s foremost independent drilling contractors, a wholly-owned subsidiary of Stena AB.
Stena Drilling operates two semi-submersibles; the Stena Don and Stena Spey. Stena Spey is a conventionally moored unit; whilst Stena Don is dynamically positioned ans is in the process of being fitted with a self-contained 8-point mooring system. With drilling depths of up to 27,900 ft, Stena Drilling’s fleet of semi-submersibles can operate in water depths up to 2,132 ft (650m).
Check the specifications of our Semi-Submersibles below
The Stena Don is a harsh environment dynamically positioned Class 3 semi submersible drilling, completion and workover vessel for worldwide operations. The Stena Don has a capability for a water depth up to 1640ft using a 18 ¾” – 15,000psi WP ‘TL’ Cameron BOP and Cameron 21” LK 2.0 riser.
The Stena Spey is a Friede & Goldman L907 (enhanced Pacesetter) twin pontoon, column stabilised self propelled, semi submersible offshore drilling unit. The Stena Spey has a SBOP capability for a water depth of 5,000ft using 18 ¾” – 15,000psi Hydril BOP and Vetco MR-6C riser.