Asgard subsea gas compression plan submitted
The partners in the Asgard licenses have submitted to Norway’s minister for petroleum and energy a 15 billion kroner plan for development and operation (PDO) of subsea gas compression to maintain production from Mikkel and Midgard fields, about 200 km off Norway.
Operator Statoil expects the subsea compression to increase recovery from Mikkel and Midgard by about 28.7 billion cu m of gas and 21.9 million bbl of condensate. Water depth in the area is 240-310 m.
Because of a pressure decline in the fields, the plan calls for installing seabed compressors near the wellheads to increase pressure for piping the wellstreams 40-50 km in a common line to the Asgard B semisubmersible production platform.
The plan includes the installation of one subsea template with two compressors, coolers, separators, and pumps. A submarine cable will provide power.
The work will also include modifications on the Asgard B platform and the Asgard A floating production, storage, and offloading vessel.
Statoil expects the work to be completed in first-quarter of 2015.
Statoil has already let a 650 million kroner contract to Aker Solutions for topsides modification work (OGJ Online, June 20, 2011) and a 3.4 billion kroner contract also to Aker Solutions for a full-scale subsea compression system (OGJ Online, Dec. 1, 2010).
Asgard licensees include Statoil 34.57%, Petoro AS 35.69%, Eni Norge AS 14.82%, Total E&P Norge AS 7.68%, and ExxonMobil Exploration & Production Norway AS 7.24%.
Mikkel licensees are Statoil 43.97%, ExxonMobil E&P Norway 33.48%, Eni Norge 14.9%, and Total E&P Norge 7.65%.
Guntis Moritis | Production Editor
Guntis Moritis has covered production and drilling technology for the Oil & Gas Journal since January 1988. Previous to that, he worked for several major oil companies in the areas of drilling, production, and reservoir engineering. Moritis has a degree in petroleum engineering from the Colorado School of Mines.
