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Last updated: 30 Jul 2014

Key statistics

Key activities Licences Acreage
(sq km)
Producing fields 1H 2014  Working  Interest  production (boepd)
E D P 16 1,089 11 9,000

Tullow first entered the UK offshore exploration, development and production arena in 2000, when it acquired a significant number of Southern North Sea gas assets from BP. The acquisition comprised of assets in the CMS and Thames-Hewett Areas. The portfolio has since been expanded through a number of new licence awards and bolt-on acquisitions including transactions with Shell, Chevron-Texaco and Conoco-Phillips. Tullow has succeeded in extending the life of these mature assets through focused cost reduction, successful exploration and innovative developments. Tullow's first offshore operated development was the Horne and Wren project in the Thames Area where production commenced in 2005.

In 2012, Tullow announced its intention to sell its UK and Netherlands gas assets. Tullow signed an agreement to sell a 53.1% interest in the Schooner Unit and a 60% interest in the Ketch field in the UK Southern North Sea to Faroe Petroleum (U.K.) Limited in April 2014. The purchase has an effective date of 1 January 2014 and is expected to complete by the end of the year when operatorship of Schooner and Ketch will also transfer to Faroe. Tullow is making good progress with selling the remainder of its UK and Dutch North Sea assets.


Decommissioning the Thames area complex


In October 2014, Tullow and its partners have submitted draft plans to decommission the Horne & Wren platform, Wissey and Orwell subsea installations and the connecting pipelines and umbilicals within the Thames Area Complex, in accordance with the provisions of the Petroleum Act 1998.

The Horne & Wren installation and pipeline is located in the UK Continental Shelf (UKCS) in Blocks 53/03, 53/04 and 49/28 of Southern North Sea, approximately 65 km east of the nearest UK landfall and approximately 38 km from the UK / Netherlands trans-boundary line. The Horne and Wren fields lie in and straddle Blocks 53/03 and 53/04. The Wissey field is located in Block 53/04 and is approximately 10 km east of the Horne & Wren platform. The Orwell field is located in Block 50/26a and lies approximately 100 km east of the nearest landfall in Norfolk and 35 km west of the Thames Area Complex.

The Horne & Wren, Wissey and Orwell fields produced gas which was flowed through the Thames Area Complex and then exported to the Bacton Gas terminal in Norfolk.

There are five documents listed below regarding our decommissioning plans;

1.       Draft Decommissioning programme for Wissey

2.       Draft Decommissioning programme for Orwell

3.       Draft Decommissioning programme for  Horne and Wren

4.       EIA for Thames Area Decommissioning

5.       Thames Comparative Assessment


'Cameron' well Environmental Statement

Tullow drilled an exploration well at the 'Cameron' prospect (UKCS Block 44/19b) during 2011. Tullow Oil prepared an Environmental Statement associated with the drilling of this well. The Environmental Statement can be downloaded by clicking on the link below:

Infrastructure Code of Practice

Licence list