UK Operations and Licences
Operations
Tullow first entered the UK offshore exploration and production arena in 2001, when it acquired a significant number of Southern North Sea (SNS) gas assets from BP. The acquisition comprised assets in two main areas, CMS (the Caister Murdoch System) and the Thames/Hewett Area. The portfolio has since been expanded through a number of transactions and licence awards. The SNS gas assets include significant equity in the associated infrastructure, the export pipelines, and one of the onshore receiving and processing terminals at Bacton. In the CMS area, a five-field development known as CMS III was completed during 2004, with all the fields tied back to the CMS production infrastructure. Further exploration success in the area led to the discovery and development of the Kelvin field, which came on stream in November 2007.
In March 2005 Tullow completed a deal with Shell and Esso which gave the Company operatorship and significant holdings in the CMS area Schooner and Ketch Fields as well as interests in three discoveries in adjacent acreage. Since acquiring the Schooner and Ketch assets Tullow has increased production through development drilling and improved performance via facilities maintenance and well optimisation programmes. Production from the Thames area Horne and Wren fields, Tullow's first operated development offshore UK, commenced in June 2005. This was later followed by the sub-sea Thurne development in September 2007 and the Wissey Field which came on stream in August 2008 as a tie-back to the Horne & Wren platform.
Projects to sustain production at current levels are ongoing and include infill wells on the Murdoch, Boulton and Hewett fields and an infill well on the Bure field is planned for Q1 2009.
Tullow operates over 70% of its UK gas production.
UK exploration activity reduced somewhat during 2008, although we continue to seek opportunities in the core CMS Carboniferous play. The appraisal potential of the 2006 K4 discovery is currently under review as well as development options for the 2007 Harrison discovery.
In June 2008 Tullow announced that it has signed a Memorandum of Understanding with Eni for the sale of its 51.69 % interest in the offshore Hewett Unit fields and related infrastructure, including the onshore Bacton terminal. The deal is expected to complete at year-end.
The Southern North Sea gas business remains a core Tullow asset. Recent portfolio adjustments leave the company better placed to add significant value and increase its already significant position in the basin. Thames area fields will continue to export gas via the Bacton terminal.
Maps and Data
Licences
North Sea - Caister Murdoch (CMS) Area
| Licence | Blocks | Fields | Tullow Interest |
Operator | Other Partners |
|---|---|---|---|---|---|
| P450 | 44/21a | Boulton B&F | 9.50% |
ConocoPhillips | GDF |
| P451 | 44/22a 44/22b |
Murdoch Boulton H, Watt |
34.00% |
ConocoPhillips | GDF |
| P452 | 44/23a (part) |
Murdoch (K) | 6.91% |
ConocoPhillips | GDF |
| P453 | 44/28b | Ketch | 100.00% |
Tullow | |
| P516 | 44/26a | Schooner | 97.05% |
Tullow | GDF |
| P847 | 49/2b | 15.00% |
GDF | RWE | |
| P1006 | 44/17b | Munro | 20.00% |
GDF | ConocoPhillips |
| P1013 | 49/2a | 25.00% |
GDF | RWE | |
| P1058 | 44/18b, 44/23b |
Kelvin |
22.50%
|
ConocoPhillips | GDF |
| P1139 | 44/19b | 22.50%
|
ConocoPhillips | GDF | |
| P1437 | 44/13a | 25.00%
|
GDF | E.ON, Endeavour |
|
| CMS III Unit | 44/17a (part) 44/17c (part) 44/21a (part) 44/22a (part) 44/22b (part) 44/22c (part) 44/23a (part) |
Boulton H, Hawksley, McAdam, Murdoch K, Watt |
14.10% |
ConocoPhillips | GDF |
| Murdoch Unit | 44/17b 44/17a |
Munro | 15.00% |
ConocoPhillips | GDF |
| Schooner Unit | 44/26a 43/30a |
Schooner | 90.35%
|
Tullow | Faroe Petr., GDF |
North Sea Thames - Hewett Area
| Licence | Blocks | Fields | Tullow Interest |
Operator | Other Partners |
|---|---|---|---|---|---|
| P007 | 49/24F1(part) (Excluding Gawain) 49/24F1(part) |
Gawain |
100.00% 50.00% |
Tullow Perenco |
|
| P028 | 48/30a, 52/5a | Hewett | 53.24% |
Tullow | Eni |
| P037 | 48/28a, 48/29a 49/28a, 49/28b 49/28d |
Hewett Thames, Yare, Bure, Deben, Wensum, Thurne* |
49.84% 66.67% 66.67% |
Perenco Perenco Perenco |
Eni Centrica Centrica |
| P039 | 53/4a 53/4d |
Welland** Wissey |
75.00% 62.50% |
Tullow Tullow |
First Oil First Oil, Faroe Petr. |
| P060 | 50/26a | Orwell | 100.00% |
Tullow | |
| P105 | 49/29a(part) | Gawain | 50.00% |
Perenco | |
| P112 | 52/4a | Hewett | 52.39%
|
Tullow | Eni, Perenco |
| P133 | 53/3a 53/3a P4 |
45.00% 35.00% |
BG BG |
Dyon Dyon |
|
| P786 | 53/3c | Horne | 50.00% |
Tullow | Centrica |
| P852 | 53/4b | Horne & Wren | 50.00% |
Tullow | Centrica |
| P1445 | 48/28c 52/3a 52/4b 52/5b |
100.00% |
Tullow | ||
| Gawain Unit | 49/24F1 (part) 49/29a (part) |
Gawain | 50.00% |
Perenco | |
| Hewett Unit | 48/28a, 48/29a, 48/30a (part) 52/4a, 52/5a |
Hewett Deborah, Della, Delilah |
51.69%
|
Tullow | Eni, Perenco |
| Welland Unit | 49/29b (part) 53/4a |
Welland** | 33.73% |
ExxonMobil | First Oil |
Notes :
* - Tullow has an 86.96% interest in Thurne.
* * - Production from the Welland field ceased in 2002
North Sea - Central North Sea
| Licence | Blocks | Fields | Tullow Interest |
Operator | Other Partners |
|---|---|---|---|---|---|
| P477 | 16/13c | 6.25%
|
ConocoPhillips | Maersk, BG, Endeavour, Global Santa Fe | |
| P1045 | 16/18b | 6.25%
|
ConocoPhillips | Maersk, BG, Endeavour, Global Santa Fe |
 |
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