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Shell Shearwater - Central North Sea

Shearwater is a Shell UK owned and operated production platform, located in the Central North Sea sector of the UK. (https://www.shell.co.uk/business-customers/upstream-oil-and-gas-infrastructure/north-sea-operated-assets.html)

The DBB-SAVER was used in order to safely replace a flow meter in the export gas system, connecting the platform via the subsea pipeline system to onshore installations. There ws a DBB valve configuration, of which both valves were found to be passing.

Safety risk assessments were performed in adition of the Shell Global approval document (for use of the DBB-SAVER on any of their assets) to identify any other risks in this specific application, on that specific platform.

The outlet of the DBB-SAVER was led outside the topsides to a safe area via full diameter hoses, the rupture disc connection was connected to the platform central flare system. This guaranteed no gas release within the topside modules. Important in a 3-dimensional explosion safe zoned structure, which is one of the challanges offshore.

The DBB-SAVER can be specified for offshore applications. The working principle is the same as an onshore version, but the design is adapted to the specific hook-up and conditions as experienced in an offshore environment.

Link to the customers website:


 Company:   Shell UK – Shearwater platform
 Situation:   Replacement of export gas flow meter
 Result:   Reduction of platform downtime and limit blowdown volume



Business cases

See other cases

NAM Tjuchem

Safe working on gas transfer station

NAM UGS Norg (1)

Repair of equipment on wellhead field pipeline

NAM UGS Norg (2)

Hot work on pressure vessel

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