Angola Block B
Landmark: FMC Technologies First Early-Production Subsea System
Project Overview
- Contract Award: 1994
- Sales: Houston, Texas
- Fabrication: Houston, Texas
- Service Base: Houston, Texas
- Host Type: FPSO
- Contract Type: EPC
Project Characteristics
- No. Trees: 3
- Water Depth: 120 m (390 ft)
- Tree Type: Vertical
- Tree Pressure: 5,000 psi
- Tree Bore Size: 3"x2"
- Hydrocarbon: Oil
Project Ownership
- Sonangol 41%
- ChevronTexaco 39%
- Total 10%
- ENI 10%
Scope of Work
- Subsea
- Three (3) vertical 3"x2" 5,000 psi subsea trees
- Universal guidebases (wellhead adapter spool assemblies)
- Layaway vertical flowline hub assemblies for tree
- Nominal 3"x2" completion tubing hanger
- Hydraulic-operated chemical injection isolation valves
- Nominal 1/2" buried check valve assembly
- Production flowloop
- Crossover flowloop
- Tree manifold
- Hydraulic tree cap assembly
- Running tools and workover equipment
- System integration testing, installation assistance, service and maintenance
Floating Production
Design and supply of permanent spread mooring system for installation on an Early Production System (supplied by FMC SOFEC)
Comments
ChevronTexaco’s (Chevron) Nemba Field is located in 120 m (390 ft) of water about 60 km (40 miles) off the coast of the Cabinda Province in exploration Block B offshore Angola.
FMC was responsible for the Early Production System (EPS), which represents the initial phase of the South Nemba and Lomba Oil subsea development project.
Chevron enhanced existing technology and installed a subsea completion arrangement capable of producing up to 20,000 bopd from three (3) wells drilled into the Pinda formation. Production was maintained at or near that level for the 2-1/2 years prior to installation of the South Nemba and Lomba platforms in 1998. The EPS approach was devised to achieve early production while permanent production facilities were fabricated and installed. In the interim, crude was produced to a Floating Production, Storage and Offloading (FPSO) vessel, the S.S. Jamestown, where it was processed and sent via a subsea pipeline to the Malongo terminal. First production through the two (2) platforms was achieved in the latter part of 1998.