GDF SUEZ E&P Norge has awarded SPT Group the contract for delivery of an online Flow Assurance System (FAS) and associated flow assurance services for the Gjøa field located in the North Sea. The FAS will be configured in SPT Group’s online e-Field Solution (edpm®) based on OLGA multiphase flow simulator. The flow assurance service contract period is for 5 years with possibility of extending twice by 3 years.
Integrated Operations (IO) Philosophy
“GDF SUEZ Integrated Operations ambitions are to increase hydrocarbon recovery factor, increase preventive maintenance and reduce operational expenditures through better and faster decisions through collaboration with external vendors and service companies like SPT Group”, informs Terje Overvik, Managing Director for GDF SUEZ E&P Norge.
Knut Erik Spilling, SPT Group’s Senior Vice President for e-Field Solutions, says “Our online production management solution and flow assurance service capabilities is an excellent fit with the IO Philosophy of GDF SUEZ, which is demonstrated through this exciting and long-term oriented contract”.
The Gjøa Flow Assurance System (FAS) will be used to:
- Decide production routing of individual wells to gas or liquid flowlines
- Provide virtual flow meters for each well as a back-up system for the sub sea multiphase flow meters
- Predict forming of slugs throughout the subsea production facility
- Monitor critical operational parameters like temperature (related to waxing)
- Provide a production planning and advice tool for operational scenarios and operational changes
- Validate operational procedures, gather operational experiences and field verification data
The Key Components of the Gjøa Flow Assurance System
edpm® model:
-13 wells
- 5 subsea manifolds
- 2 production flowlines (1 loop)
- 1st and 2nd stage separators
- Gas lift and gas warm up dynamics
edpm® system modes:
- Real-time
- Planning (what-if)
The Gjøa FAS will be connected to the Historical Database (OSI PI) for frequent update with field measurements
edpm® applications:
- Transparent production system
- Virtual metering
- Liquid inventory advisor
- Slugging advisor
- MEG tracking advisor
- Planned production forecasting advisor
The Gjøa Field
Gjøa is being developed with five subsea templates tied back to a semi-submersible platform, located in a water depth of 370m. The Gjøa field will produce gas and light oil. Gjøa's recoverable reserves are some 82 million barrels of oil and condensate and roughly 40 billion standard cubic metres of gas. Gjøa will be produced via separate gas and oil wells. The gas and oil wells will be tied back to the Gjøa semi via dedicated gas and oil flowlines. There are facilities for gas lift to the oil wells.
The gas will be exported to the Shell St Fergus Gas Terminal in Scotland, via a new gas export pipeline and tie-in to FLAGS pipeline. Stabilised oil will be piped via a new oil export pipeline to the Troll II pipeline and further to the StatoilHydro operated Mongstad terminal north of Bergen.
StatoilHydro is the development operator for the Gjøa field and semi. GDF SUEZ takes over as operator when the field comes on stream. Start-up of oil and gas production is planned for October 2010. GDF SUEZ's operations organisation will be based in Stavanger, with a logistics, supply and helicopter base at Florø, north of Mongstad.
Gjøa, including the Vega satellite development, is the largest project in the North Sea today.
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