Work has started on the steel jacket for the Johan Sverdrup field's riser platform, seen as the biggest industrial project in Norway for decades to come.
The steel jacket now being built at the Kværner Yard in Verdal will weigh 26 500 tonnes, making it the biggest steel jacket in Europe.
“The steel jacket will also be one of the most complex ever built by the industry. Not only will we route the land-based power through the jacket, we’ll also be controlling the subsea water injection and exporting the field’s oil and gas from it. In addition, we’re also preparing to tie in future phases of the Johan Sverdrup field development to the riser platform. In building this jacket, we’re in fact making preparations to take in as many as 56 conduits,” Digre says.
The steel jacket for the riser platform will be transported and installed on the Johan Sverdrup field in 2017. Due to its size, the jacket will be shipped out to the field on the biggest barge in the world for this type of transport, Heeremas H-851. In order to receive the 260 metre-long barge, the quay at Kværner Verdal is being upgraded.
The steel jacket is not the only Johan Sverdrup element currently under construction. The 246-tonne template for the wells, to be pre-drilled on the field from March 2016, is being produced at Vlissingen in The Netherlands. The well template will be installed on the field in the course of the summer/autumn 2015.
“We’ve got an ambitious plan to bring Johan Sverdrup on stream in late 2019 and in accordance with this plan, we’ve now started to produce first building bricks for the project,” says Digre.
The Johan Sverdrup partnership consists of Statoil, Lundin Norway, Petoro, Det norske oljeselskap and Maersk Oil. The partnership has recommended that Statoil be operator for all the field’s phases.
Johan Sverdrup is one of the five biggest oil fields on the Norwegian continental shelf. With expected resources of between 1.7 – 3.0 billion barrels of oil equivalent, it will also be one of the most important industrial projects in Norway over the next 50 years. The development and operation of this enormous field will provide revenues and jobs for coming generations.
Peak production on Johan Sverdrup will be equivalent to 25% of all Norwegian petroleum production.
First-phase development work can provide some 51,000 man-years of work in Norway; 2,700 man-years in the production phase.