ABERDEEN, UK – Boskalis Subsea Services has completed its first saturation diving project for Perenco UK on a pipeline in the UK southern North Sea.
The company mobilized its dive support vessel Boka Da Vinci to replace a 29-m (95-ft) section of pipeline, which takes hydrocarbons from the NW Bell field to the Bessemer platform.
From there they are delivered via the Inde field facilities to the Bacton gas terminal in Norfolk for processing.
The vessel with 100 crew on board sailed from Great Yarmouth to the pipeline location, 78 km (48 mi) east of the Lincolnshire coast.
The Boka Da Vinci is equipped with two bells for saturation diving work at depths of up to 300 m (984 ft) and a 140-t active heave-compensated main crane.
It also transported a mechanical connector from Connector Subsea Solutions, plus equipment to perform testing, flushing, and cutting services.
The campaign included dimensional surveys, dredging, and concrete mattress removal, storage and re-positioning activities.
IKM Testing personnel conducted barrier testing and flushing services, with Claxton Engineering preparing, cutting and removing the existing steel pipe before installing Magma’s M-pipe replacement.