Print this pageBritannia Satellites Phase One—Combining Mature, Stratigraphically Distinct Discoveries Through a Multi Field Development, Outer Moray Firth, United Kingdom Continental Shelf
Tucker, Steve,
Paul McQuillan, Kim Watson, ConocoPhillips (
The Britannia Satellites Phase 1 Development involves the
development of two relatively small fields in the Outer Moray Firth of the
UKCS. The two fields are known as Callanish, an oil field with a gas cap, and
Brodgar a Gas Condensate Field, The Fields are located within a 40 km radius
of the Britannia Platform, through which the hydrocarbons will be exported.
Due to the complex technical issues around their definition, their size and the
commercial situation it was only in December 2003 that a Field development
plan gained sanction. This paper will focus primarily on the resolution of the
technical GG&RE issues that finally allowed the project to go forward.
The Callanish Field comprises two mappable accumulations: a main
field area, discovered by the 15/29b-12 Finder well in 1999, and an untested
Outlier separated from the main accumulation by a structural saddle. The main
field area was appraised in 2000 by the 15/29b-13 well. The reservoir is a
complex Forties Sandstone channel system of late Palaeocene age.
The Brodgar
Field is a gas-condensate accumulation. The Field was discovered by the 21/3a-
4 well in 1985 and subsequently appraised in 2000 by the 21/3a- 7 well. The
Brodgar accumulation is a northwest-southeast trending compressional ridge in
the South Buchan Graben. The reservoir is the Lower Cretaceous Kopervik
Sandstone which has 3 way dip closure bounded on the northeast by a
stratigraphic seal against the footwall of the Rattray volcanic high.