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| Troll B platform | |
|---|---|
| Name | Troll B |
| Location | Troll oil and gas field, North Sea |
| Operator | Equinor |
| Type | Fixed steel jacket |
| Depth | ~303 m |
| Installed | 1995 |
| Status | Converted to gas processing |
Troll B platform The Troll B platform is a major offshore installation on the Troll field in the Norwegian sector of the North Sea, developed to exploit the Troll field’s large natural gas reserves. Built and installed in the mid-1990s by a consortium led by Equinor (formerly Statoil), the platform has been integral to Norwegian energy exports via infrastructure such as the Statpipe and Vesterled pipelines. Troll B’s lifecycle has been shaped by industry actors including Royal Dutch Shell, TotalEnergies, Petoro, and contractors like Kværner and Aker Solutions.
Troll B is one of several fixed platforms on the Troll complex alongside Troll A platform and Troll C platform, concentrated near the Utsira High geological feature and the Norwegian continental shelf. Designed primarily for gas production and processing, its operations tie into national frameworks like the Petroleum Act (Norway) and fit within export networks feeding terminals such as Draupner S and the Kårstø processing plant. The field’s commercialization involved partners including Royal Dutch Shell, ConocoPhillips, TotalEnergies, Mitsubishi, and the state-owned Equinor affiliate Petoro.
Troll B was designed as a large fixed steel jacket platform with topsides housing gas processing, utilities, and accommodation modules conceived by engineering firms such as Kværner and Aker Solutions. Structural analysis referenced standards from organizations like Det Norske Veritas (now DNV) and the International Organization for Standardization through collaborations with research institutes such as SINTEF. Key components included gas separators, condensate recovery similar to systems used on Heidrun oil field facilities, high-pressure export compressors akin to equipment seen on Tampen projects, and safety systems influenced by lessons from incidents at installations like Alexander Kielland and Piper Alpha. The jacket was fabricated with welding procedures consistent with codes promoted by Norsk olje og gass and designed to resist metocean conditions recorded by studies around Dogger Bank and Norwegian Sea operations.
Fabrication of Troll B’s jacket and topsides involved shipyards and yards such as Kværner Stord, Aker Stord, and heavy-lift operations contracting vessels associated with Sleipner A and modules transported along routes used by Tjeldbergodden logistics. Installation employed heavy-lift crane vessels comparable to those used for the MV Blue Marlin or techniques developed during construction of Brent Bravo and Statfjord platforms. The project schedule coordinated with pipeline tie-ins to the Statpipe and export compression facilities at Kårstø and integration with subsea infrastructure including wells drilled by rigs like Transocean Winner and SeaDrill units. Regulatory approvals referenced practices by Petroleum Safety Authority Norway and environmental assessments drawing on work from Norwegian Petroleum Directorate.
Since commissioning in the 1990s, Troll B has produced and processed gas fed into the Norwegian export system, contributing to deliveries to markets via linkages with Zeebrugge and the UK gas network through interconnectors used during trade influenced by entities such as Gazprom and European Commission policies. Operational partners over time included Equinor, Petoro, TotalEnergies, Royal Dutch Shell, and ConocoPhillips, with maintenance campaigns managed by service providers like Halliburton, Schlumberger, and Baker Hughes. The platform’s lifecycle intersected with international developments including Kyoto Protocol obligations, EU energy security debates, and supply disruptions during events like the Russia–Ukraine gas disputes.
Troll B’s safety record has been managed under frameworks from Petroleum Safety Authority Norway and industry bodies such as Norsk olje og gass, with protocols informed by historic incidents at Piper Alpha and Alexander Kielland. Routine safety upgrades incorporated technology from specialist firms including Siemens and ABB for control and emergency shutdown systems, and firefighting systems modeled after standards applied on platforms like Statfjord C. Investigations and audits involved consultants such as DNV and response coordination with Norwegian emergency assets exemplified by cooperation between Joint Rescue Coordination Centre of Southern Norway and coastal authorities.
Long-term planning for Troll B has considered decommissioning frameworks codified by the Petroleum Act (Norway) and precedents set by projects like the decommissioning of Brent Bravo and initiatives coordinated by Oljedirektoratet (Norwegian Petroleum Directorate). Options studied include reuse, removal, or conversion to alternative uses such as carbon capture and storage trials linked to projects like Northern Lights and electrification initiatives promoted by Gassnova and Enova SF. Stakeholders including Equinor, Petoro, and international partners evaluate economic and environmental factors in line with directives from the European Union and national policy from the Norwegian Ministry of Petroleum and Energy.
Category:Offshore platforms in Norway