Project Profile
Value: US$2,700 million
Location: Norwegian Continental Shelf, Norway
Water Depth: 787 to 984 feet (240 to 300 metres)
Reserves: 735 MMbo and 8.2 Tcf (232 Bcm) of gas
Production: 49,700 bopd (October 2014)
Start-up Year: 1999
Located 124 miles (200 kilometres) offshore Norway in the Halten Bank of the Norwegian Sea, the Asgard field is comprised of three geographical segments: the Midgard, Smorbukk and Smorbukk South discoveries. A major development in the Haltenbanken, the Asgard facilities serve as a production hub for the area. Spanning Blocks 6507/11 and 6407/2, Midgard is a gas and condensate field that was discovered in 1981. Containing oil, gas and condensate, Smorbukk and Smorbukk South are located on Block 6506/11 and were discovered in 1984 and 1985, respectively. With water depths ranging from 787 to 984 feet (240 to 300 metres), the three finds were unitised into one production license in 1995, resulting in combined estimated reserves of 735 MMbo and 8.2 Tcf (232 Bcm) of gas.
In 2015, production commenced from iSmørbukk South Extension. The offshore project at the Åsgard field is a world class project in production from tight formations. Through a combination of wells with long well sections and new completion technology, oil and gas are now produced from a reservoir previously regarded as not feasible. This pioneer project opens up for other similar developments. The reserves in the Smørbukk South Extension project are estimated to be 16.5 million bbl oil equivalent and will contribute significantly to the production from the Åsgard A FPSO in the times ahead.
On 6th October 2015 a new subsea wet gas compressor, the first of its kind in the world, began operations. Using this technology on Åsgard is expected to yield 49 million scm in additional gas and condensate from the Midgard and Mikkel reservoirs.
The recovery rate from the Midgard and Mikkel reservoirs at the field has been raised from 67% to 87% and from 59% to 84%, respectively. It stands in 300 metres of water and covers an area similar to a football pitch. Gas is recovered from reservoirs 2,500 metres beneath the seabed. (August, 2016)
Operators:
Statoil: Operator with 34.57% interest
Petoro: 35.69% interest
Eni: 14.82% interest
Total: 7.68% interest
ExxonMobil: 7.24% interest
Contractors:
ABB: Deliver nine subsea transformers for the world’s first subsea gas compressor station
Aker Solutions: FEED, EPC for Asgard subsea gas compression and EPC for subsea compression topside modifications of Åsgard A and B platforms and well services
Baker Hughes: Provide integrated drilling services
Bergen Group Offshore: Fabrication of subsea structures
EMAS AMC: Subsea engineering, procurement and offshore construction contract
FMC Technologies: Subsea gas compression control systems as well as subsea equipment
Mokveld: Subsea anti-surge control valves
Nemo Engineering AS: Two 12\" hot tap gooseneck spools
Nexans: 165 km of static and dynamic power umbilical and power cables
Siemens: Designing subsea gas compression unit
Technip: Installation contract, subsea contract and future intervention services
Transocean: Drilling using semi-submersible Transocean Leader
Kaefer: Insulation, scaffolding and surface treatment (ISO) service contract (December, 2017)
Sub contractor:
ABB: Drives and transformers to subsea power distribution system
Agility Group: Supply subsea systems for FMC Technologies
AXTech: Supply a special handling system for lifting and handling large subsea modules
Expro: Power connectors awarded by Aker Solutions
MAN Turbo AG: Designing subsea gas compression unit
Schneider Electric: Supply a control unit for power supply awarded by Aker Solutions
SKF: Supply magnetic bearings and electronics
Balltec Engineered Solutions: Design and manufacture of a unique lifting and handling solution that has played a key part in the installation of the underwater gas compression plant, Åsgard. Balltec’s scope of work was to design a flexible connector solution able to pick up the modules and land them on the seabed. The connectors were designed as part of an engineered lift and were used to connect the modules and a lifting frame to accommodate the complex load parameters. The module designers, Aker Solutions, chose Balltec to develop the lifting system. (October, 2015)
SKF: Contract to supply magnetic bearings for use in the subsea gas compression system at the Asgard gas field off the Norwegian coast. SKF has been involved in the development of the project for five years, working in conjunction with MAN Diesel & Turbo, the manufacturer of the electric motor-driven centrifugal compressors that are a part of the overall gas compression system. (November, 2015)