Sangos/Cinguvu

Sangos/Cinguvu Oil Field Profile

Location

The Sangos/Cinguvu oil field is located offshore Angola, specifically within Block 15/06. The approximate coordinates for the field are -6.272, 11.2208.

Operator and Ownership

The field is operated by Eni S.P.A., with the ownership structure as follows:

• Eni S.P.A.: 36.84%
• Sonangol Pesquisa e Produção: 36.84%
• SSI Fifteen Limited (associated with SINOPEC, Dayuan, CS control, etc.): 26.32%.

Discovery and Production

• Discovery Year: The Sangos field was discovered in 2008, followed by the Cinguvu field in 2009.
• Production Start Year: The field began production in 2014.

Project Details

The Sangos/Cinguvu oil field is part of the West Hub development project, which also includes the Mpungi, Ochigufu, and Vandumbu fields.

• Subsea Wells: The project involves the drilling of 21 subsea wells, including 12 producers, 4 alternate water and gas injectors, and 5 water injectors. These wells are grouped in clusters and connected to the N'Goma FPSO (Floating Production, Storage, and Offloading) vessel.
• Water Depth: The fields are located in water depths ranging between 1,000 and 1,500 meters.
• FPSO: The N'Goma FPSO is moored in about 1,250 meters of water depth and is equipped with facilities to monitor and control the subsea production system. It has a process capability of 100,000 barrels of oil per day (bopd), with a storage capacity of 1.5 million barrels of oil. The FPSO also handles liquids, water, and gas, with specific capacities for each.

Production and Reserves

• Production Volume: The field has produced varying amounts over the years, with notable production figures including:
  • 21.9 million barrels per year in 2016
  • 9.96 million barrels per year in 2017
  • 17.41 million barrels per year in 2015.
• Reserves: While specific reserve figures for the Sangos/Cinguvu field alone are not detailed, the West Hub project as a whole includes several fields with significant oil reserves. The overall project is designed to optimize production from multiple fields in the area.

Development and Expansion

• Development Phases: The West Hub project has seen several phases of development, including the integration of additional fields such as Mpungi North and Vandumbu. The Ochigufu field was also tied into the project.
• Contractors and Partners: Key contractors involved in the project include SBM Offshore for FPSO refurbishment, Aker Solutions for engineering and umbilicals, and FMC Technologies for subsea equipment and services.

Geology

The reservoirs in the West Hub project, including the Sangos and Cinguvu fields, are primarily composed of Upper and Middle Miocene sand reservoirs.

History and Milestones

• 2006: Eni was awarded Block 15/06 during the Angolan licensing round.
• 2008: The Sangos field was discovered.
• 2009: The Cinguvu field was discovered.
• 2010: The Mpungi field was discovered.
• 2013: The Vandumbu oil field was discovered.
• 2014: First oil production began, and Total and Statoil sold their stakes to Sonangol.
• 2015-2018: Production started on the Cinguvu, Mpungi, Vandumbu, and Ochigufu fields.