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Jotun A

The Jotun A FPSO, a 92,000 DWT FPSO capable of producing 70,000 bpd, began producing in 1999 on the Jotun field (Norway). As part of Vår Energi’s investment in increased oil recovery from the Balder field in the North Sea an upgrade of the Jotun FPSO is required. The Balder Future project will extend the life of the field (PL 001) by 2045, giving Norway’s oldest license a lifetime of 80 years.

Boskalis performed the engineering and prepared the method statements for the lift off activities from the Jotun A FPSO its turret, gantries and turntable.Due to the outreach, height and capability one of the few sheerlegs capable to execute same is the Taklift 4. The lifting was executed in Stavanger (Norway) by the Taklift 4 with 30 meters fly-jib assisted by AHT Sapphire, both Boskalis own equipment, and under guidance of a Boskalis Heavy Lift Supervisor.

The upgrade was contracted under the coordination of Rosenberg Worley in Stavanger. The upgrade includes an overhaul of the turret, pipes, process equipment, hulls, marine systems, living quarters, control and security systems. The FPSO is scheduled to be re-installed between the Balder FPSO and the Ringhorne platform during summer 2022.

Related projects

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Deepening of the Eems-pipeline

The 42" Eems pipeline is part of the pipeline connection between the gas cleaning and drying plant of Phillips Petroleum at Rysumer Nacken in Germany, and the natural gas pipeline network in the Netherlands. The gas is obtained from the Ekofisk gas field in the Norwegian region of the North Sea. The pipeline crosses the morphologically dynamic Eems estuary over a length of 4 km, passing both the deep shipping lane ‘Oostfriesche Gaatje’ and the shallow sand bank ‘Paap’.

Development gas export pipeline,
Hibiscus to Point Fortin

The NCMA Development Project comprised the development of the North Coast Marine Area, which is located in the Caribbean Sea and Bay of Paria, Trinidad. The project included the installation of a 24" Gas Export Pipeline from the Hibiscus Platform to a landfall at Point Fortin. From the landfall the pipeline was routed by directional drilling and by surface laid pipeline, to a termination point in the Atlantic LNG Terminal at Point Fortin. As part of this project Boskalis was awarded the contract for the provision of landfall, directional drilling and onshore pipeline installation and testing of the 24" gas pipeline system.

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Hanze F2a Development Project

Hanze, 200 kilometers offshore Den Helder in block F/2 of the North Sea, is the first operated development in the Dutch sector by Germany's Veba Oil. The oilfield reserved approximate 34 million bbl, plus 40 bcf of associated gas. 

Installation gas pipeline, Takoradi

Late November 1998 Boskalis was awarded a subcontract for the installation of two marine pipelines to supply and discharge cooling seawater for the Takoradi thermal power plant that was under construction for the Volta River Authority, near the village of Aboadze approximately 20 kilometers north-east of Takoradi, Republic of Ghana.

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Re-insulation Gannet 'C' Bundles, North Sea

The Gannet 'C' satellite field, which is located in the North Sea at 112 miles East of Aberdeen in 95-meter water depth, comprises four drill centres, each having one or more producing wells. The drill centres are connected to the local platform Gannet 'A' by four flowline bundles with a total length of 10 kilometers. A glycol-based gel, filling the annulus of the Gannet 'C' carrier pipe, insulated the individual flow lines. Prompted by degradation of the gel and the resulting drop in oil and gas arrival temperatures at the platform, an EPIC project took off for a re-insulation system. The objective of the re-insulation system was that it should provide sufficient insulation to the bundles in order to safeguard production during the total field life of Gannet 'C', being a minimum lifetime of 15 years. Boskalis Offshore was supported by Hydronamic - the in-house engineering department.