Mostarda

Mostarda Oil and Gas Field Profile

Location and Block Details

• The Mostarda Oil and Gas Field is located offshore Angola, specifically within Block 32, approximately 150 kilometers off the Angolan coast.
• The field is situated in water depths reaching up to 1,950 meters.

Project Overview

• The Mostarda Oil and Gas Field is part of the larger Kaombo Oil Project, which is the biggest ultra-deepwater oil field development in Angola. The project involves the development and tie-back of six satellite fields: Gengibre, Gindungo, Caril, Canela, Mostarda, and Louro.

Ownership and Operation

• The field is operated by TotalEnergies, which holds a 30% interest. Other partners include Sonangol (30%), Sonangol Sinopec International (20%), Esso (15%), and Somoil (5%).

Discovery and Production

• The Mostarda field was discovered in 2006. However, specific details on the Final Investment Decision (FID) year and the exact production start year are not provided in the available sources.
• The field started producing oil as part of the Kaombo project, with the first oil from the Kaombo Norte FPSO achieved in July 2018 and the Kaombo Sul FPSO, which processes oil from the Mostarda field, commencing operations in April 2019.

Production and Reserves

• The Kaombo project, including the Mostarda field, is estimated to hold 658 million barrels of oil reserves. The project has a total production capacity of 230,000 barrels of oil per day (bopd).
• The Mostarda field, along with the other five fields, is connected via 300 kilometers of subsea pipelines to two Floating Production, Storage, and Offloading (FPSO) vessels: Kaombo Norte and Kaombo Sul. The Kaombo Sul FPSO processes oil from the Canela, Mostarda, and Louro fields.

Technical Details

• The project involves 59 subsea production wells, making it the largest subsea well system in Angola for a single project. The wells are tied back to the FPSO units through extensive subsea infrastructure.
• Each FPSO unit has a processing capacity of 115,000 bopd and 100 million cubic feet of gas compression per day, along with a storage capacity of 1.7 million barrels of oil.

Contractors and Infrastructure

• The project involved several major contractors, including Technip and Heerema Marine Contractors for the subsea umbilicals, risers, and flowlines (SURF), and Aker Solutions for the subsea production system. Saipem was responsible for the engineering, procurement, construction, installation, and commissioning (EPCIC) of the FPSO units.
• The FPSO vessels were converted from very large crude carriers (VLCCs) named Olympia and Antarctica, now known as Kaombo Norte and Kaombo Sul, respectively.

Crude Oil Characteristics

• The crude oil from the Mostarda field has specific properties, including an API gravity of 28.6, a density of 0.8834 g/cc at 15°C, and a total sulfur content of 1.03% wt. It also contains various hydrocarbon molecules and has a pour point of -9°C.

Environmental and Operational Considerations

• The associated gas produced at the field is exported to the Angola LNG plant.
• The project is notable for its innovative approach, including the conversion of oil tankers into FPSO vessels to control costs and align with Total’s policy of continuous improvement.

The Mostarda Oil and Gas Field is a significant component of the Kaombo project, showcasing advanced technical capabilities and innovative solutions in ultra-deepwater oil production.