US engineering group McDermott International, soon to merge with CB&I, has inked a major lump sum contract with Maersk Oil for work on the largest ever oil and gas project offshore Denmark.
McDermott is to provide engineering, procurement, construction and commissioning (EPCC) services for the US$3.36 billion Tyra Redevelopment project, in the Danish sector of the North Sea, under two separate work packages.
McDermott will supply a range of topside modules, bridges, flares, and module support frames for the project, with project management out of Kuala Lumpur, Malaysia, and construction out of Batam Island, Indonesia. The combined weight of all structures to be provided by McDermott for the project will be nearly 32,000-tonne (29,000 metric tons), the scope represents one of the largest combined projects for McDermott in the North Sea. Work is due to start early 2017 with sail-away between 1 February 2020 and 1 February 2021.
Sitting 139mi (225km) west of Esbjerg, Denmark, Tyra is in blocks 5504/11 and 12. The facilities process some 90% of Denmark's gas production. First production was from the field in 1984.
Today the Tyra field consists of two main centres; Tyra East and Tyra West. Tied into the centre are five unmanned satellites; Tyra Southeast, Harald, Valdemar, Svend and Roar.
Under the investment project, the two existing gas processing and accommodation platforms on Tyra East and Tyra West will be replaced by one new processing platform and one new accommodation platform. The four wellhead platforms and two riser platforms will have their jackets extended by 10m. The current topsides will be replaced by new topsides. The unmanned satellite platforms in the area have not been affected by subsidence and will therefore not be redeveloped.
One McDermott work package consists of the Tyra East G platform’s gas processing topside of ca.18,188-ton (16,500 metric tons) and includes two, 328ft (100m) connecting bridges and a 449ft-long (137m) flare.
The other McDermott work package consists of two wellhead topsides for Tyra East B and Tyra East C at 1763 and 1366-ton (1600 and 1240 metric tons) respectively; a 2480-ton (2250 metric ton) riser topside at Tyra East E; two wellhead topsides for Tyra West B and Tyra West C at 1421 and 1488-ton (1290 and 1350 metric tons) respectively; and a riser topside at 335-ton (304 metric ton) at Tyra West E. Also included are four connecting bridges ranging from 60 to 1102-tons (55 to 1000 metric tons).
McDermott will also fabricate six module support frames (MSF) totaling 1289-ton (1170 metric tons) to raise the existing platforms 42ft (13m) to account for seabed subsidence.
The existing four wellheads and two riser topsides along with the old bridges will be removed by others while retaining the original jackets to accept the new topsides with their MSFs.
“This award heralds our return to the North Sea and is a part of our strategic growth strategy,” said Scott Munro, Vice President of Americas, Europe and Africa. “By executing our part of the Tyra Redevelopment project from Kuala Lumpur and Batam, the project showcases our vertically integrated One McDermott Way approach to project execution and delivery, which demonstrates our global engineering and fabrication capabilities. This is one of several projects executed in this way. We have had a long relationship with Maersk Oil, and are committed to ensuring the efficient use of resources to meet their needs for a safe, on-schedule, within budget project, and one that fully meets the stringent requirements for automation and corrosion resistance, ensuring a long and productive life for the new facilities.”