Landmark: North Sea’s First Completion in Water Depths Over 350 m (1,150 ft)

ConocoPhillips Heidrun WINorway Blocks 6507/7 & 6507/8

Project OverviewContract Award: 1993Sales: Kongsberg, NorwayFab. Trees: Dunfermline, U.K.Fab. Controls: Kongsberg, NorwayService Base: Bergen, NorwayHost Type: TLPContract Type: EPC

Project CharacteristicsNo. Trees: 6Water Depth: 350 m (1,150 ft)Tree Type: VerticalTree Pressure: 5,000 psiTree Bore Size: 5”x2”Hydrocarbon: Oil and Gas

Project OwnershipPetoro 58%ConocoPhillips 24%Statoil 13%Fortum 5%

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Regional Sales Office:FMC TechnologiesKirkegårdsveien 45NO-3601 Kongsberg, NorwayPhone: +47 3228 6700Fax: +47 3228 6750

Worldwide Headquarters:FMC Technologies1803 Gears RoadHouston, TX 77067 USAPhone: +1 (281) 591 4000Fax: +1 (281) 591 4291

www.fmctechnologies.com

Scope of Work4 Six (6) vertical 5”x2” 5,000 psi subsea trees

4 Two (2) water-injection templates tied back to a TLP

4 Tie-in system on templates and riser base

4 Electro-hydraulic control system with umbilical and topside controls

4 UWD-II 10,000 psi 18-3/4” subsea wellhead system

4 Mechanically oriented tubing hanger (metal seals throughout) run with hydraulically actuated tool

4 Remote retrievable choke bridge arrangement

4 Pressure and temperature transducers on subsea tree and downhole

4 Vertical wireline access for production and annulus through tubing hanger/subsea tree

4 Diverless make-up flowline and controls umbilical

4 Multiplexed electro-hydraulic control system

4 ROV interface/override facilities

4 Common workover and intervention tools with Statfjord Satellites project

4System integration, testing, installation assistance, service and maintenance

CommentsThe Heidrun Water Injection subsea system is comprised of two (2) 4-slot templates with three (3) injection subsea trees each. The templates are tied back to the concrete TLP production facility by two (2) flowlines and control umbilicals. Two (2) subsea riser bases connect the dynamic riser and umbilical to the seabed flowlines and umbilicals.

The project was executed as an EPC contract. Template design is identical to Statoil’s Statfjord Satellite Project, incorporating field-proven technical solutions. Workover and intervention tooling is utilized through a common tool pool with Statoil and Shell. Delivery time from firm order to offshore installation was eighteen (18) months. The project was executed as an EPC contract.

In 1995, Statoil took over the operatorship of the field.