Golden Eagle Development Area Project, United Kingdom
Nexen Petroleum's Golden Eagle Area Development (GEAD) project includes development of the Golden Eagle and Peregrine (formerly Pink) fields.
The fields are located in blocks 20/1, 20/1N and 14/26a of the North Sea, about 110km northeast of Aberdeen. Water depth in the region is 89-139m.
The GEAD project was approved by the UK Department of Energy and Climate Change in October 2011. It is being executed by the operator, Nexen, holding a 36.5% interest. Partners include Maersk Oil North Sea (31.56%), Suncor Energy (26.69%) and Edinburgh Oil and Gas (5.21%).
First production from the project is expected in 2014 at the rate of 60,000 to 65,000 barrels of oil a day (bopd). An investment of $3.3bn is being made in the project.
Discovery of the North Sea oil fields
Golden Eagle field was discovered in 2007 and the Peregrine field in 2008. Another prospect, Hobby, was discovered in February 2009. This prospect has now been defined as part of the Golden Eagle field.
Geology and reserves at Golden Eagle and Peregrine
Oil and gas at the Golden Eagle and Peregrine fields have been discovered in the Burns and Punt sandstones.
Proven and probable reserves of 140 million barrels of oil equivalent are expected to be recovered from the project over a period of 18 years.
Field development of Nexen Petroleum's Golden Eagle area development
The field is planned to be developed using two platforms - a wellhead platform and a production, utility and quarters (PUQ) platform. The two platforms will be connected by a 70m bridge.
Nexen plans to drill 24 wells, including seven subsea and 17 from the wellhead platform. The ENSCO 120 jackup rig has been contracted to drill the wells from the platform.
Drilling of subsea wells will be carried out by a semi-submersible rig at two drilling centres (north and south).
The subsea wells will be connected to a pipeline end manifold, which in turn will be connected to the platform complex through umbilicals and flowlines.
Wellhead platform and production, utility and accommodation platform at GEAD
The wellhead platform will be 50m x 50m and weigh 4,000t. It will be supported by a 6,000t steel piled jacket and will include 21 well slots.
The PUQ platform will measure 85m x 40m and weigh 10,000t. It will include facilities for processing hydrocarbon fluids, an accommodation module and utility systems.
The topsides of the platform will be supported by a four-legged jacket weighing 6,000t. The platform's deck will include a separate living quarters to accommodate 140 personnel.
Exportation of produced oil and contractors
Oil produced from the field will be exported either to the Forties Pipeline System through a tie-in at the Buzzard field by a new 20km pipeline or to the Flotta terminal through a tie-in at the Claymore field through a new 75km pipeline.
The gas will be exported through a tie-in at the Ettrick field into the Scottish area gas evacuation (SAGE) pipeline by a new 16.75km pipeline.
Nexen contracted Penspen to carry out the front-end engineering and design (FEED) for the subsea development of the project.
Heerema Fabrication Group was contracted to fabricate the jackets for the wellhead platform and PUQ platform. Deliveries are scheduled for the second quarter of 2013.
A €135m contract was awarded to Technip in January 2012 to supply and install subsea infrastructure for the project. Scope of supply includes two export flowlines, one production flowline, one umbilical and other subsea equipment.
GE Oil & Gas has been contracted to provide production and control equipment.
The engineering, procurement and construction contract for the accommodation module has been awarded to SLP Engineering. A $150m detailed engineering design contract for the topsides of the two platforms was awarded to CB&I. FEED work for the project has been completed by CB&I and the detailed design is expected to be completed by the end of 2012.
The decks of the two platforms will be manufactured by Lamprell under a $200m contract. Prosafe will provide its Safe Caledonia vessel for accommodation support during the development of the project. The contract is worth $74m.
Mech-Tool will supply a laboratory module to be installed on the production platform. RDS, a unit of KCA Deutag, was contracted to provide concept designs for the drilling facilities.
BMT Cordah prepared the environmental impact assessment statement. Fairstar Heavy Transport has been contracted by Saipem to provide transportation services.