Ormen Lange (Subsea to Shore Technology)

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)
2005E (Ph II)
2007E (Ph III)
Sales: Kongsberg, Norway
Fab. Trees: Dunfermline, U.K.
Fab. Controls: Kongsberg, Norway
Service Base: Bergen, Norway
Host Type: Onshore
Contract Type: EPC

Project Characteristics:
No. Trees: 8 (Ph I)
No. Trees: 8 (Ph II)
No. Trees: 8 (Ph III)
Water Depth: 1,000m (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
Eight (8) enhanced horizontal 7″ 10,000 psi subsea trees
Separate installable-retrievable choke modules
Nine (9) UWD-15 subsea wellhead systems
Two (2) 8-slot foundation bottom structures and manifold systems with 20″ headers including 30″ pig-loop system
One (1) PLET (pipeline end termination) 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


The Ormen Lange Development is presently the single largest project in Norway. As many as 18,000 people will be 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 1,100 m (2,800 to 3,600 ft). The seabed is very irregular, with a soil varying from stiff rock to soft clay.

The development is divided into three phases. The well stream will be transferred via pipelines to an onshore processing plant. The processed gas will be transported through pipelines and then exported to the U.K. and the European continent. The development will operate both as a base and swing load field. Norsk Hydro is the operator for the planning and development phase. Shell will take over as operator when Ormen Lange comes onstream in October 2007. Shell will also be responsible for drilling of the production wells.

The development plan for the Ormen Lange Field offers improved economics when compared with the original concept selection. This is due to an increase in recoverable reserves, increased production level, higher processing capacity, higher transport capacity and more flexibility in the proposed concept.
taken from :


a presentation / pdf file that discusses more about Ormen Lange Field, you can find in here :



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