Stella

• The Stella development lies in the Central North Sea, 15 km northwest of the Joanne Field and was discovered in 1979 by well 30/6-2 when gas/condensate was encountered throughout a 25 ft section of Paleocene Andrew sand. Oil was also observed in the underlying Ekofisk Chalk reservoir.  Subsequent appraisal wells achieved flow rates of 2,900 boepd of condensate and 23 mmscf per day of gas from the Andrew sands.


• Ithaca drilled an appraisal well and a sidetrack (30/6a-8 and 30/6a-8Z respectively) on the Stella discovery in 2010. The 30/6a-8 well targeted a down flank location to test the extent of the structural closure; earlier appraisal wells had been located at the crest.  The 30/6a-8Z sidetrack was drilled to target a mid flank location.


• The Andrew Sand has average net reservoir porosity of 22 % (up to 26 %) with an average permeability of 30 mD (up to 74 mD)

• The Stella Field will be a multi well development tied into local infrastructure and exported via the existing pipeline systems in this sector of the Central North Sea


• Significant upside on Stella has been identified in the north of the field which could be appraised during the field development.

The latest Sproule report (December 2010) assumes:

• 4 Andrew Sandstone Production wells
• 1 Ekofisk Chalk Production well
• 222 ft Oil column height