2015 represents an important milestone for Statoil as both the Gullfaks and Åsgard subsea compression projects achieved production start-up.

The Gullfaks subsea wet gas compression system is projected to increase recovery from the Gullfaks South Brent reservoir by 22 million barrels of oil equivalent. The solution involves two 5 megawatt wet gas compressors that handle a production rate of 10 million standard cubic metres of gas per day. The compressor system is connected to existing subsea templates and piping 15 kilometres from Gullfaks C.

The Åsgard subsea compression system is projected to provide 306 million barrels of oil equivalent in increased recovery from the Mikkel and Midgard fields. The solution involves two 11.5 megawatt centrifugal compressors that handle a production rate of 21 million standard cubic metres of gas per day. The compressor system is connected to existing subsea templates and piping 40 kilometres from Åsgard B. The difference in scale and boosting requirements helps to explain why two quite different technical solutions have been selected.

This presentation will provide an overview of the two projects including:

Why subsea compression

The business cases and technology selection

The technology assessment and qualification.

The execution program for the projects including engineering, procurement, construction, testing and installation.

Commissioning and start up

Future subsea compression opportunities

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