Project Profile
Value: US$5.6 billion
Location: Norwegian Sea, blocks 6706/12, 6707/10, roughly 186 miles (300 kilometres) from land northwest of Sandnessjøen in Nordland county
Start-up Year: second half of 2018
Estimated recoverable volume, including Haklang and Snefrid Sør, is 47 billion standard cubic metres (Sm3) of gas
Water Depth: 4,290 feet (1,300 metres)
The Luva gas field (know known as Aasta Hansteen) is located on Blocks 6706/12, 6707/10, roughly 186 miles (300 kilometres) from land in 4,265 feet (1,300 metres) of water in the Norwegian sector of the North Sea. Statoil serves as the operator, holding a 75% interest; ExxonMobil holds 15%; and ConocoPhillips holds the remaining 10% interest. Discovered in 1997, the well was plugged and abandoned as a gas find with oil shows. A year later, the Transocean Leader semisub drilled an appraisal well 6706/12-1 to a total depth of 12,956 feet (3,949 metres), confirming the find was a discovery.
The Aasta Hansteen discovery was discovered in 1997 and the well was plugged and abandoned as a gas find with oil shows. One year later, the Transocean Leader semisub drilled an appraisal well 6706/12-1 to a total depth of 12,956 feet (3,949 metres) and confirmed the find was a discovery. Recovering the resources on Aasta Hansteen will be demanding, due to the discovery being located far from land and outside of the established infrastructure. The water depth is significant and the weather conditions are challenging. The Plan for development and operations was submitted to the Ministry of Petroleum and Energy at the end of December 2012. Production from the Statoil-operated Aasta Hansteen gas field off Norway is expected to start in the second half of 2018.
Operators:
Statoil ASA: Operator with 75% interest
OMV: 15% interest
ConocoPhillips: 10% interest
Contractors:
ABB: internal and external telecommunication systems
Allsea: Carry out pipelaying
Aker Solutions: Deep-draft semi-submersible initial study, FEED for the cylinder-shaped floating facility for the SPAR platform, supply of deepwater umbilicals, supply 3 template manifolds, 7 subsea trees and a number of wellheads, controls and workover & tie-in systems
Baker Hughes: Provide integrated drilling services
CB&I: Provision of FEED services and detailed engineering design and procurement services
DeepOcean: Supply and installation of 140 kilometres of fibre optic cable
Dockwise: Spar buoy transport contract
Emerson Process Management: Supply of pressure and temperature measuring equipment
EMAS AMC: Transport and installation of subsea templates
First Subsea: Provide mooring line connectors
GE Oil & Gas: Supply advanced aeroderivative gas turbine equipment
Hyundai Heavy Industries: Install a topside facility. HHI is building both the lower hull and the topsides. (August, 2016)
IKM Ocean Design: Pipeline FEED contract
JFE: Fabricating line pipe
Marubeni Itochu: Fabricating line pipe
Metocean Services International (Pty) Ltd (MSI): Site current survey
Sevan Marine ASA: Cylindrical floater initial study
Subsea 7: Subsea pipeline and marine installation work
Technip: FEED contract and design, procurement and delivery of the Spar platform hull readied for mating with the platform topsides
Transocean: Drilling contractor
Wasco: Apply coating to line pipe
IKM: US$8 million contract with Subsea 7 for subsea pre-commissioning of pipelines and risers
Van Oord: Subsea Rock installation works using the flexible fallpipe vessel Stornes executed in relation to the development of the Aasta Hansteen gas field and Polarled pipeline in the Norwegian Sea. Recently Van Oord completed the first phase of these record subsea rock installation works, for energy company Statoil. Van Oord will execute the second phase in 2015.
CKT Project: Contract to deliver the living quarters (LQ) for the Aasta Hansteen. CKT spent more than two years of engineering and building to complete the living quarters. Several hundred people took part in the process. once installed, the unit will offer accommodation to Statoil’s employees aboard the first spar platform ever deployed in Norway. The platform is being built by Hyundai Heavy Industries, and will be moored in the Norwegian Sea, 300 km west of Bodø. The unit has been designed to take 108 people. Given the fact the platform will be moored above the Arctic Circle, the massive, eight-storey LQ has been built to withstand the most extreme weather conditions. (November 2015)
PGS: To conduct a 3D GeoStreamer survey. (April 2016)
Sub contractor:
CB&I: Detailed engineering design and procurement services for the spar topside awarded by HHI
Hertel Offshore: Provide the accommodation awarded by HHI
Kvaerner: Provide services for onshore and offshore hook-up and commissioning assistance for HHI
Lankhorst Ropes: Supply the mooring lines for HHI
Unasys: Project’s mechanical completion and commissioning phases
Wärtsilä: Contract to supply inert gas and nitrogen generator systems for the spar platform under construction for Aasta Hansteen field
BMT Scientific Marine Services (BMT): Contract by Subsea7 to supply the riser monitoring system for the Aasta Hansteen Spar, approximately 300 km off the coast of Norway including an innovative suite of remotely operated underwater vehicles (ROV) deployed strain, motion and position sensors to monitor steel catenary riser (SCR) response in the Touch Down Zone (TDZ).
Nautronix: Order to supply NASNet®, an underwater positioning system for Subsea 7. The system will be used on the Aasta Hansteen field. The system employs a broadcast technique to provide true multi-user, accurate and reliable positioning in all water depths with no acoustic interference.