| On stream | 2003 | 2003 | 2003 | 2004 | 2004 | 
 | Year of discovery | 1992 | 1987 | 1991 | 1994 | 1990 | 
 | Operator | Norsk Hydro Produksjon as | Statoil ASA | Norsk Hydro Produksjon as | EssoMobil Expl. & Prod. Norway AS | Total E Norge AS | 
 |  |  |  |  |  |  | 
 | Production facilities | Two Subsea connections to Troll C. | Two Subsea connections to Åsgard B. | Integrated platform | Integrated platform | Subsea connection to Heimdal. | 
 |  |  |  |  |  |  | 
 | Transport solution | Oil to Mongstad, Gas for injection and later to Kolsnes. | Gas to Kårstø through Åsgard Transport. Condensate to Åsgard B for shiping. | Oil via Grane oljerør to Sture. Gas import from Heimdal. | Gas to Kolsnes and kondensat in pipes to Mongstad via Troll oilpipeline II. | Gas to Heimdal. | 
 | Water depth, metres | - | 220 | 127 | 190 | - | 
 |  |  |  |  |  |  | 
 | Initially recoverable reserves1 |  |  |  |  |  | 
 | Oil. Million Sm³ | 11.2 | - | 120.3 | 18.0 | 1.6 | 
 | NGL. Million tonnes | 0.1 | 6.0 | - | 2.2 |  | 
 | Gas. Billion Sm³ | 4.3 | 24.1 | - | 51.8 | 6.7 | 
 | Condensate. Million Sm3. | - | 6.6 | - |  |  | 
 |  |  |  |  |  |  | 
 | Remaining reserves1 |  |  |  |  |  | 
 | Oil. Million Sm³ | 7.6 |  | 112.5 | 17.7 | 1.4 | 
 | NGL. Million tonnes | 0.1 | 5.4 |  | 2.2 |  | 
 | Gas. Billion Sm³ | 4.3 | 22.0 |  | 51.3 | 6.0 | 
 | Condensate. Million Sm3. | - | 5.7 |  |  |  | 
 |  |  |  |  |  |  | 
 | Petoro. Per cent | - | - | 30.0 | 30.0 | 30.0 | 
 |  |  |  |  |  |  | 
 | Investments. Bill. NOK2, 3 | 3.9 | 2.1 | 18.4 | 10.7 | 2.4 | 
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