Norway Blocks 15/6 & 15/9
Landmark: Unique Integral Protective Structure
Project Overview
- Contract Award: 2002
- Sales: Kongsberg, Norway
- Fab. Trees: Dunfermline, U.K.
- Fab. Controls: Kongsberg, Norway
- Service Base: Bergen, Norway
- Host Type: Platform
- Contract Type: Frame Agreement
Project Characteristics
- No. Trees: 5
- Water Depth: 110 m (360 ft)
- Tree Type: Horizontal
- Tree Pressure: 10,000 psi
- Tree Bore Size: 7"x2"
- Hydrocarbon: Gas
Project Ownership
- StatoilHydro 59%
- ExxonMobil 32%
- Total 9%
Scope of Work
- Five (5) horizontal 7"x2" 10,000 psi subsea trees
- UWD-15 subsea wellheads
- Blind internal tree cap
- ROV interface/override facilities
- Diverless make-up of flowline and control umbilicals
- ROVCON® MK-I diverless tie-in and connection tool rental
- Multiplexed electro-hydraulic control system
- Diverless workover
- Integrated template structure with suction anchors and manifolds
- System integration testing, installation assistance, service and maintenance
Comments
This field was discovered in 1974, and lies in the Norwegian North Sea Blocks 15/6 and 15/9. The Alfa Nord satellite is a sub-field of the Sleipner West Field, which produces through a four-well subsea facility with the well-stream tied back with an 18 km (11 mile) flowline to the Sleipner T platform. The umbilical to control the satellite field ties back to the Sleipner A platform. The development of Alfa Nord began in August 2002 and will start producing gas condensates in the latter part of 2004.
The gas of the field will travel to the European market via the Statpipe, Zeepipe and Europipe. The condensate will be piped to a receiving terminal at Kårstø, north of Stavanger for export by ship. Sleipner West is tied back to Sleipner East, and the two (2) fields are produced by a single operations organization in StatoilHydro. The Sleipner West development embraces the B wellhead platform and the T gas treatment installation. Unprocessed output from the B platform is piped 12 km (7 miles) to the Sleipner T platform, which is linked by a bridge to the Sleipner A installation.