Two world firsts – subsea compression at Gullfaks and ?sgard

摘要

2015 represents an important milestone for the Gullfaks and ?sgard subsea compression systems, with both installations starting up within the year. 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 connected to existing subsea templates and piping 15 kilometres from Gullfaks C. The Asgard 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 ?sgard B. The difference in scale and boosting requirements helps to explain why two quite different technical solutions have been selected. This presentation will provide a history of the development of the projects, including the benefits of subsea compression and the technology assessment and selection of technology for the two fields. Technology gaps, development and qualification activities and risk management will be reviewed. The schedule for the projects will be described, leading to start-up and operation in 2015. The presentation will also explore future subsea compression needs and opportunities.