Development plans for the Statoil-operated Tyrihans field in the Norwegian Sea were formally approved by the Council of State and submitted to the Storting (parliament). The project embraces two structures – Tyrihans South, an oil field with a gas cap, and Tyrihans North. The latter is a gas and condensate discovery with a thin oil zone. Plans call for the Tyrihans structures to be developed with five seabed templates tied back to the Statoil-operated Kristin field, about 40km to the NW. A 43km pipeline will carry the well-stream to the Kristin platform for separation and export of rich gas from both fields via the Šsgard Transport system. This runs to Kårstø north of Stavanger, where the gas will be processed before onward transmission to European customers. Liquids production – condensate (light oil) and crude – will be combined with Kristin output after stabilisation and piped to the Šsgard C storage ship for export by shuttle tanker. Tyrihans is due to come on stream in 2009, when spare capacity will be available in Kristin’s topside facilities. A total of 12 wells are due to be drilled on the field, which lies in roughly 300m of water on the Halten Bank. According to the plan for development and operation, it will cost an estimated NOK 14.5 billion in nominal value to bring Tyrihans on stream. Recoverable reserves are put at roughly 182 million barrels of oil and condensate, and 34.8bcm of rich gas.
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