Seawell

Since 1987, the Seawell has remained at the forefront of the oil and gas well intervention industry with an impressive track record that includes saturation diving and riser-based and riserless well intervention work throughout the United Kingdom Continental Shelf (UKCS).  

The Seawell has entered more than 730 wells, decommissioned over 200 live and suspended wells, including 15 subsea fields. She is fitted with a twin bell saturation diving system rated to 300m with a capacity for up to an 18-man dive team; twin remotely operated vehicle (ROV) capability; and is capable of subsea construction and decommissioning, well intervention; plus be capable of stand-by and rescue duties if needed.

The Seawell is a DP2 light well intervention and saturation diving vessel with a purpose-built Module Handling System (MHS) tower positioned over a 7.0m x 5.0 m moonpool. The main winch is rated 150 Te (SWL) hook load capacity in passive or active heave compensation modes. The tower also incorporates guide wire tensioners and winches, active and passive podlines and constant tension Launch and Recovery System (LARS) winches. The MHS can deploy 5” and 7” SIL systems to 500m water depth, including the 7-1/16” Subsea Intervention Lubricator (SIL), which enables communication with next-generation Subsea Trees. Seawell’s subsea crane provides an AHC lifting capacity of 45Te. Inbuilt vessel tanks offer generous storage for chemical treatment (pumping) capabilities.

The Seawell’s unique design and multi-service capability significantly reduce intervention time and provide a cost-effective method of maintaining subsea well stock through well maintenance and production enhancement solutions.

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