The giant Johan Sverdrup field was discovered in 2010 by well 16/2-6 drilled on the Utsira high, in the central part of the Norwegian North Sea. This area was considered exhausted after more than 40 years of disappointing on-and-off exploration drilling. The discovery of the significant Edvard Grieg field by well 16/1-8 in 2007 converted the Johan Sverdrup prospect to a high probability prospect. The predrill hypothesis was that the two prospects could be part of one large deposit with a 40 to 50 m (131 to 164 ft) saturated oil leg beneath a gas cap and a common...