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Marathon Oil has been producing oil and natural gas in the United Kingdom for more than 20 years. The Company's current holdings in the U.K. include the Company-operated Brae Complex and the Foinaven Field. Our U.K. operations are based in Aberdeen, Scotland. Marathon Oil’s net sales from the UK averaged 16 mbbld of liquid hydrocarbons and 48 mmcfd of natural gas for the 12 months ended December 2012. This represents 9 percent of the Company’s non-U.S. liquid hydrocarbon sales and 9 percent of non-U.S. natural gas sales.
The Brae Alpha platform and facilities act as host for the underlying South Brae Field, as well as the adjacent Central Brae and West Brae fields. The North Brae and the East Brae fields are gas-condensate fields.
The export of Brae Field liquids is via the Marathon-operated Brae-Forties pipeline, in which the Company has a 42 percent interest, and via the BP-operated Forties pipeline system to Cruden Bay in Scotland. Stabilized crude liftings are made at the Firth of Forth loading terminal near Edinburgh, Scotland.
The Brae group owns a 50 percent interest in the outside-operated SAGE pipeline, which provides transportation for Brae- and Beryl-area gas and has a total wet gas capacity of approximately 1.1 billion cubic feet per day (bcfd). The SAGE terminal at St. Fergus provides processing for gas from the SAGE pipeline and processing for 1 bcfd of third-party gas.
Marathon holds a non-operated working interest in the Foinaven area, west of the Shetland Islands in water depths between 1,300 and 1,900 feet. The Company's working interests comprise a 28 percent stake in the main Foinaven Field, 47 percent of East Foinaven and 20 percent of the T35 and T25 accumulations.
The export of Foinaven liquids is via shuttle tanker direct from FPSO to market. Current upgrading of the FPSO will extend the life of this project through 2021.
Marathon Oil UK LLC
Rubislaw Hill, Anderson Drive
Aberdeen, AB15 6FZ, Scotland
Phone: +44 1224-80-3000
Fax: +44 1224-80-3190
Marathon Oil U.K. LLC is committed to environmental protection and places significant emphasis and resources on minimizing wastes, emissions and other releases through its operations. Environmental performance indicators are a key part of Marathon Oil’s corporate and operational performance commitments with targets designed to drive continuous improvement. This report summarises the 2012 environmental performance for Marathon Oil’s UK offshore operations.
The Devenick field, the 30th third party subsea tie-back to the Brae Field, commenced production safely and on schedule in September 2012. The addition of this new tie-back enables Marathon Oil to extend the life of the East Brae platform beyond 2020.
Marathon Oil in the UK was responsible for managing a large part of the Devenick project scope on behalf of the Devenick Operator, including the engineering design, procurement, construction and commissioning of a new 600 tonne topsides module for East Brae. Over 300 personnel were involved in the 27 month duration of the project.
The topsides modification project was completed safely, with no significant injuries or incidents and within the Q3 2012 target set.
The development connects gas production to the Devenick subsea manifold via specially insulated flow lines. The gas is sent to the East Brae platform via a 34 km pipeline. From the East Brae platform the gas is exported through the SAGE transportation pipeline system to the terminal at St Fergus. Oil production is exported from the East Brae platform through the Brae Liquids Pipeline to the Forties Pipeline System.