Angola Block 18 

Landmark: Subsea Development with Largest Angolan Content

Project Overview

• Contract Award: 2004
• Sales: Kongsberg, Norway
• Fabrication Trees: Dunfermline, U.K.
• Fabrication Controls: Kongsberg, Norway
• Fabrication Manifolds: Lobito, Angola & Larvik, Norway
• Fabrication PGBs: Luanda, Angola
• Fabrication Connection: Kongsberg, Norway
• Service Base: Luanda, Angola
• Host Type: FPSO
• Contract Type: EPC

Project Characteristics

• No. Trees: 45 
• Water Depth: 1,200 - 1,400 m (3,937 ft - 4,593 ft) 
• Tree Type: Dual Enhanced Vertical Conventional
• Tree Pressure: 10,000 psi
• Tree Bore Size: 5"x2"
• Hydrocarbon: Oil and Gas 

Project Ownership

• Concessionaire:  Sonangol
• BP (operator)  50%
• SSI 50%

Scope of Work

• Forty-three (44) UWD-15 Wellhead Systems w/ Guide Bases
• Twenty-one (21) Production Trees (incl. one spare)
• Twenty-four (24) Injection Trees (incl. one spare)
• Installable / Retrievable Choke Modules
• Eight (8) Production Manifolds
• One (1) Gas / Water Injection Manifold
• Connection Systems for Flowlines and Umbilicals
• Multiplexed Electro Hydraulic Production Control System
• Acoustic Monitoring System
• Workover Equipment w/ associated Control System
• Installation and Commissioning Support

Comments

Greater Plutonio is one of the largest contracts executed by FMC. The project is executing some significant "firsts" in Angola. In addition to the production of six (6) manifolds and forty-two (42) PGBs at local suppliers, twenty-five (25) of the subsea trees are assembled locally at the FKIA Luanda Base. A comprehensive training program of Angolan nationals is completed. Management, fabrication, assembly and offshore service assistance are localized in Luanda. A 1,400 m2 Pipe Work Fabrication Hall in Lobito is built for execution of the manifold contract. The Greater Plutonio project will initially develop five (5) fields: Galio, Cromio, Paladio, Plutonio and Cobalto. A spread-moored FPSO, located southeast of Paladio, will process the fluids produced from the subsea production wells. A single flowline will accommodate production from the Northern system (Galio, Cromio and Paladio), and a looped flowline system will accommodate production from the Southern system (Cobalto and Plutonio). Manifolds will be offline from the flowlines and connected via tie-in spools to inline tree assemblies. Water injection will be used to provide reservoir pressure maintenance. Injection water will be transported by a single flowline for the Northern system, and by two (2) flowlines for the Southern system. First oil was achieved 1st of October 2007.