PLATFORM CONCEPT
Eni Norge AS and Statoil have selected the Sevan FPSO 1000 (Floating, Production, Storage and Off-loading) concept for development of the Goliat field.
This concept was selected as the best option following a design competition. In addition, Sevan was selected as the contractor for the Goliat project’s future detailed design of the FPSO.
Design adapted to strict environmental requirements
The detailed design phase was completed by the end of 2009. The Sevan 1000 was designed to operate under the challenging conditions prevailing in the Barents Sea and introduces, among other things, new principles for winterisation, as well as being adapted to fulfil the strict environmental requirements in the region.
GOLIAT FPSO INSTALLATION
Hyundai Heavy Industries Co Ltd (HHI) has been selected to supply the floating production, storage and offloading (FPSO) installation for the Goliat field.
The contract applies to work connected with:
• Detailed project design
• Procurements
• Construction
• Preparation for operation
• Transport from Korea to Norway.
HHI has widespread experience from the construction of a number of FPSO units which are in operation in various parts of the world. HHI and Eni both have experience from other arctic regions such as Canada, Alaska and Siberia.
The selection and development of the concept were based on strict requirements regarding health, safety and the environment. The FPSO will be supplied with electricity from land, resulting in a significant reduction in emissions of greenhouse gases.
Project and engineering consultancy services
Eni Norge AS and Sevan Marine ASA have entered into a contract under which the partners will collaborate to achieve a successful result for the Goliat FPSO project. The contract includes the provision by Sevan Marine of project and engineering consultancy services as well as assistance in the form of services during the preparation of production start-up at Goliat.
The services will include the provision of personnel who will be integrated by Eni Norge in its project organisation. Sevan Marine will also carry out, and assist Eni in, several engineering and construction projects in copyrighted technology fields related to the company’s FPSO concept.
MARINE INSTALLATION WORK
DOF Subsea Norway AS has been awarded a contract for marine installation work connected with the Goliat FPSO. The value of the contract is approximately NOK 300 million and it will run from July 2011 to December 2013.
DOF has been selected as a preferred vendor following a thorough evaluation of both technical and commercial criteria.
The contract for marine installation work applies to:
the production and installation of 14 suction anchors, pre-installation of bottom chain, polyester line, buoyancy elements, temporary mooring of the FPSO outside Hammerfest and the final tow-out and hook-up at the field.
SEABED PRODUCTION SYSTEM (SPS)
The SPS contract has been awarded to Aker Subsea and applies generally to all activities connected with the supply of equipment: project management, engineering services, procurement, production, reception and integration testing, as well as assistance in connection with the installation, testing, completion and start-up phases of the project.
The equipment to be supplied consists of eight integrated well templates equipped with 22 wellhead and production valve gear systems, control cables, riser bases and overhaul systems. The contract came into effect on 15 September 2009.
Flowlines, risers and installation
Technip Norge AS has been awarded the contract to carry out all operations connected with the supply and installation of pipelines and riser systems at the Goliat field. The contract applies to project management, engineering services, procurement and installation of all pipelines and riser systems. Installation of the seabed templates and manifolds, riser bases and control cables is also included in the agreement.
The contract came into effect on 23 September 2009. The offshore operations are planned to be carried out in 2011, 2012 and 2013. The Goliat field is located in the Barents Sea.
STANDBY VESSEL- ESVAGT AURORA
Eni Norge has signed a letter of intent with Esvagt A/S for the construction of a new vessel, the most modern of its type, and an important milestone towards the goal of a robust and effective contingency system adapted to the Goliat field.
The winterised vessel will maintain a continuous presence at the field and will be designed and equipped for conditions in the Barents Sea.
The vessel will satisfy the latest specifications for search and rescue and oil spill contingency operations (NOFO 2009). It will ensure a rapid and effective response in the event of incidents involving personnel or oil spills and will reinforce the overall contingency apparatus in the region as regards both search and rescue and oil spill protection operations.
ELECTRIFICATION OF THE GOLIAT PLATFORM
The energy supply concept for the Goliat platform is based on partial electrification. This means that instead of generating all the energy out on the platform, about half of the electrical consumption will be supplied from onshore.
To transmit enough electrical energy out to the platform, it will be necessary to upgrade the electrical supply grid in the Hammerfest area.
The upgrading will consist of two projects:
1. Construction of a new power supply line, an electrical substation and underground cables
Siemens is the principal contractor for the onshore work. Skanska will be Siemens’ subcontractor for construction and infrastructure, Bravida for cables and installation and Istad Energimontasje will be responsible for the construction and demolition of overhead lines. Skanska has chosen Larsen Maskin & Transport as its subcontractor for excavation, blasting, roads and outdoor work.
2. Hammerfest Energi Nett will be responsible for upgrading the local electrical supply grid
The world’s longest submarine cable
The submarine cable from the mainland to the Goliat platform will be produced by ABB and installed in 2013.
Read more about the electrification of Goliat