Congo/ Haute Mer Blocks
Landmark: The First Subsea Development in Congo's Continental Shelf
Project Overview
- Contract Award: 2005
- Sales: Kongsberg, Norway
- Fab. Trees: Dunfermline, U.K.
- Fab. Controls: Kongsberg, Norway
- Service Base: Pointe Noir, Congo
- Host Type: CCF/MSS
- Contract Type: EPC
Project Characteristics
- No. Trees: 14
- Water Depth: 540 - 740 m (1,772 ft - 2,428 ft)
- Tree Type: EHXT
- Tree Pressure: 5,000 psi
- Tree Bore Size: 5-1/8"
- Hydrocarbon: Oil
Project Ownership
- Total 53.5%
- Chevron 31.5%
- Societe Nationale des Petroles du Congo 15.0%
Scope of Work
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Fourteen (14) EHXT systems (including 5 for Water Injection)
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Topside controls and 16 off subsea control modules
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Two (2) template manifold systems
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Nine (9) Well Jumpers
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Two (2) Workover system systems
- One (1) set of ROV Tools
- System integration, testing, installation assistance, service and maintenance
Comments
The project embraces two structures – Bilondo and Mobim. Both are an oil discovery. The development concept is based upon a subsea production system connected via a riser system to the floating production unit with facilities for process and accommodation. FMC Technologies is delivering 14 subsea trees and two template structures with manifolds. The agreement also includes production control systems, well jumpers and workover systems for well interventions. A full set of ROV tools is also part of the delivery.
The Mobim and Bilondo structures will be developed with two seabed templates, tied back to a Total-operated FPU. A 30 km (19 miles) export line will carry the oil to Djéno, Emerauda. The projects’ main technologically challenge is the thermal performance. The SPS flow assurance issues are low production temperatures, high WAT of 30°C, potential for hydrate formation and cold gas injected into manifold and tubing hanger.
Moho Bilondo is due to come onstream in April 2008.