Wintershall Norge AS completed drilling wildcat wells 16/1-19 S and 16/1-20 A in production licence 457 about 2.5km from appraisal wells 16/1-16 and 16/1-16 A at the Ivar Aasen field in the Norwegian North Sea.
The primary target for 16/1-19 S was to prove petroleum in Lower Cretaceous reservoir rocks (the Åsgard formation) in the western part of the Utsira High.
The reservoir quality was poorer than expected and classified as dry.
The primary target for 16/1-20 A was to prove petroleum in Middle Jurassic reservoir rocks (the Hugin formation) and to assess a possible extension of the Ivar Aasen field.
The well encountered about 600m of sandstone with traces of oil in several intervals in the Åsgard, Draupne, Heather and Hugin formations. The reservoir quality is mostly good, as expected, but the was classified as dry.
These are the third and fourth exploration wells in production licence 457, which was awarded in 2007.
The wells, drilled by the Borgland Dolphin drilling facility in 113m water depth, have been plugged and abandoned.
The unit will now move to the northern North Sea to carry out well repairs on the Vega field, operated by Statoil.
Image: The Borgland Dolphin