Statoil has awarded Heerema Fabrication Group (HFG) the contract for the engineering, procurement and construction (EPC) of the unmanned wellhead platform at Oseberg Vestflanken 2, as well as the transport and installation of the platform.
Heerema Marine Contractors (HMC) will be responsible for the transport and installation of the platform. Fabrication of the platform will start in June 2016 and the sail away is scheduled for summer 2017, followed by installation with HMC’s semisubmersible crane vessel.
The Oseberg Vestflanken 2 platform will be installed in the Norwegian part of the North Sea at a water depth up to 110m and approximately 8km northwest of the Oseberg Field center. The topside will measure 25 x 23m, has a height of 20m and will weigh 900-tonne. The jacket will have a height of 138m with a foot print of 36 x 36m and a weight of approximately 4400-tonne. Special to the jacket are suction buckets instead of piles.
Oseberg Vestflanken 2 is the first of three planned phases for developing the remaining reserves in the Oseberg area, about 130km northwest of Bergen.
The Oseberg Vestflanken development will consist of an unmanned wellhead platform with 10 well slots. Two existing subsea wells will also be reused. All wells will be drilled by a jackup Cat-J drilling rig. The well stream will be routed to the Oseberg Field center via a new pipeline, and the wells will be remote-controlled from the field center. The field development will provide 110 MMboe. Production start is scheduled for Q2 2018.
“Our design of an unmanned wellhead platform with no facilities, helicopter deck or lifeboats represents a new solution in Norway with great possibilities,” Koos-Jan van Brouwershaven, CEO of HFG said. “It meets the challenges of lower investment costs and higher efficiency requirements of Statoil. Our innovative and detailed design capability, knowledge and experience are recognized as critical success factors for the execution of this project. Also important to Statoil is that the engineering, procurement and construction of the platform will be executed on one site, our Zwijndrecht yard.”
“Even though we have two separate contracts we want to show Statoil and the oil & gas industry that we can deliver unmanned wellhead platforms as an integrated EPCI contractor,” Jan-Pieter Klaver, CEO of HMC said.
Image of Oseberg, from Statoil.
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