Norway Blocks 6305/1, 2, 4, 5, 7 & 8

Landmark: Europe's Deepest Subsea Development at 1,000 m (3,300 ft)

Project Overview:

• Contract Award: 2003 (Ph I)
• 2007E (Ph II)
• Sales: Kongsberg, Norway
• Fab. Trees: Dunfermline, U.K.
• Fab. Controls: Kongsberg, Norway
• Service Base: Kristiansund, Norway
• Host Type: Onshore
• Contract Type: EPC

Project Characteristics:

• No. Trees: 8 + 2 (Ph I)
• No. Trees: 10 (Ph II)
• Water Depth: 850 - 1000m (3,300 ft)
• Tree Type: Enhanced Horizontal
• Tree Pressure: 10,000 psi
• Hydrocarbon: Gas

Project Ownership:

• Petoro 36 %
• StatoilHydro 29 % (operator for development phase)
• Shell 17 % (operator for operational phase)
• Dong 11 %
• ExxonMobil 7 %

Scope of Work: Phase I & Phase 2

• Ten (8 + 2) Ph1 and Ten (10) Ph2 enhanced horizontal 7" 10,000 psi subsea trees
• Separate installable-retrievable choke modules
• Eleven (9 + 2) Ph1 and Ten (10) ph 2 UWD-15 subsea wellhead systems
• Two (2) 8-slot ph 1 and one (1) 8-slot ph 2 foundation bottom structures and manifold systems with 20" headers
• One (1) PLET Ph1 (pipeline end termination) module including 30" pig-loop system
• Four (4) PLEM Ph2 (pipeline end module)
• KS-200 control systems with fiber optic as primary communication system
• Electro-hydraulic Work-Over Control Systems (WOCS) with XT, LS and HSW umbilical systems
• Open sea Lower Riser Package (LRP) and Emergency Disconnect Package (EDP)
• Drillpipe landing string system
• Choke module running tool, Module Running Tool (MRT) and ROV tooling system
• Large-bore tie-in system for 20"/30" clamp connectors
• Small-bore tie-in system for less than 14" collett connectors
• System Integration testing, installation assistance, service and maintenance

Comments

The Ormen Lange Development is so far the single largest project in Norway. As many as 18,000 people have been employed directly and indirectly as a result of this project. The development is situated 120 km (75 miles) off the west coast of Norway in the upper part of the Storegga area. Natural gas reserves cover a geographical area of 350 km2 (130 miles) and are located in water depths varying from 850 to 1,000 m (2,800 to 3,600 ft). The seabed is very irregular, with a soil varying from stiff rock to soft clay.

The well stream is transferred via pipelines to an onshore processing plant. The processed gas is transported through pipelines and then exported to the U.K. and the European continent. StatoilHydro was the operator for the planning and development phase. Shell took over as operator when Ormen Lange came on stream in October 2007. Shell is responsible and has drilled the existing production wells.