Canada Blocks Graben, East Flank, Far East

Landmark: World’s First Major Project in Iceberg-Infested Waters

Project Overview

• Contract Award: 1998 (Ph I)
• 2000 (Ph II)
• 2003 (Ph III)
• Sales: Kongsberg, Norway
• Houston, Texas
• Fabrication: Dunfermline, U.K.
• Houston, Texas
• Service Base: Newfoundland, Canada
• Host Type: FPSO
• Contract Type: Alliance

Project Characteristics

• No. Trees: 19 (Ph I)
• No. Trees:6 (Ph II)
• No. Trees:2 (Ph III)
  
• Water Depth: 90 m (300 ft)
• Tree Type: Horizontal
• Tree Pressure: 6,650 psi
• Tree Bore Size: 5"x2"
• Hydrocarbon: Oil

Project Ownership

• PetroCanada 34%
• ExxonMobil 22%
• Norsk Hydro 15%
• Husky 13%
• Murphy 12%
• Mosbacher 3%
• ChevronTexaco 1%

Scope of Work

Subsea

• Ph I: Nineteen (19) horizontal 5"x2" 6,650 psi trees
• Seven (7) HOST® templates and manifolds
• Pig loop modules
• Subsea wellheads
• Ph II: Six (6) horizontal 5"x2" 6,650 psi trees
• Ph III: Two (2) horizontal 5"x2" 6,650 psi trees 
  • Electro-hydraulic controls including control modules
  • Completion system with workover controls
  • Intervention system w/complete ROV tie-in (ROVCON®)
  • System integration testing, offshore installation support and technical assistance

Floating Production

• Design and engineering of internal disconnectable turret system (supplied by FMC SOFEC)
• FPSO equipment provision to include quick connect and disconnect turret, moorings and swivel (supplied by FMC SOFEC)
• Tanker offloading systems (supplied by FMC Loading Systems)

Comments

The Terra Nova project is located in the Jeanne d’Arc Basin, 350 km (220 miles) east-southeast of St. John’s Newfoundland. It is comprised of three (3) geological blocks: Graben, East Flank and Far East. Phases I and II consist of twenty-four (24) wells drilled through seven (7) subsea templates and one spare subsea tree. The subsea wells are linked to a Floating Production Storage and Offloading (FPSO) facility. Subsea layout consists of production wells feeding into manifolds, which in turn are connected by flexible flowlines to a riser base, and then to the FPSO via a riser system.

This project was executed as a result of an alliance between Petro-Canada, Coflexip Stena Offshore, ShawMont Brown and Root, Halliburton Energy Services, PCL Industrial Constructors Inc, Doris ConPro Limited and FMC. The wells are located in dredged out trenches called glory holes to protect them from the impact of icebergs that occasionally scour the area.