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Statoil Åsgard

Statoil Åsgård

Norway Blocks 6407/2, 6506/11 and 6507/11

Landmark: North Sea’s largest subsea development

North Sea’s largest subsea development at the time of completion, Åsgard lies on the Haltenbank in the Norwegian Sea, about 120 miles (200 km) from mid-Norway and 30 miles (50 km) south of Statoil’s Heidrun field. Åsgard is comprised of the Midgard, Smorbukk and Smorbukk South deposits, which were discovered in 1981, 1984 and 1985, respectively. Water depths vary from 790 to 980 ft (240 to 300 m). Midgard straddles Blocks 6507/11 and 6407/2, while the other two deposits lie in Block 6506/11.

The development consists of a mono-hull unit (Åsgard A), for oil and condensate production with the world’s largest floating gas semisubmersible platform (Åsgard B). The other installation for development of the fields are Åsgard C (a storage ship) and the necessary subsea production installations. The subsea systems include 17 templates and 59 wells. The project was executed as an EPC contract under Statoil's and Saga’s integrated team philosophy. All phases of the project (drilling, installation, operation and maintenance) are designed for diverless operation. The HOST® template design is used for all templates. HOST® introduced a new concept, where the template is assembled of modules (on deck or subsea). The modules are moonpool deployable. Pull-in and connection are performed in one operation with the new UTIS® tie-in tool.

Some of the trees from Åsgard were used on several other Statoil fields to accelerate their development. This was possible through Statoil's practice of standardized subsea system equipment. The Åsgard field will produce 420 bcf of natural gas per year (plateau), as well as 200,000 bopd and 94,000 bpd of condensate.

  • Contract Award: 1996
  • Sales: Kongsberg, Norway
  • Fabrication Trees: Dunfermline, U.K.
  • Fabrication Controls: Kongsberg, Norway
  • Service Base: Bergen, Norway
  • Host Type: FPS-Semi and FPSO
  • Contract Type: EPC