Gas field · UK
East Sean
East Sean is a gas field in the southern North Sea, operated by ONE-Dyas. It was discovered in 1983 and produced from 1994 to 2022. Production has ceased. Over its life it produced about 2.8 billion cubic metres of gas.
Production
East Sean produced about 135,000 barrels of oil and condensate and 2.8 billion cubic metres of gas between November 1994 and November 2022.
Latest: 0 million cubic metres a day in November 2022. Highest year: 1996, averaging 1.4 million cubic metres a day. Highest month: November 1995.
Latest: 0 barrels a day in November 2022. Highest year: 1996, averaging 82 barrels a day. Highest month: December 1997.
Average production by year
| Year | Oil and condensate, barrels a day | Gas, million m³ a day |
|---|---|---|
| 2022 (Jan–Nov) | under 1 | under 0.001 |
| 2021 | under 1 | 0.029 |
| 2020 | 3 | 0.059 |
| 2019 | 6 | 0.11 |
| 2018 | 5 | 0.11 |
| 2017 | 3 | 0.1 |
| 2016 | 5 | 0.11 |
| 2015 | under 1 | 0.029 |
| 2014 | under 1 | 0.082 |
| 2013 | 0 | 0 |
| 2012 | 0 | 0 |
| 2011 | 2 | 0.044 |
| 2010 | 15 | 0.15 |
| 2009 | 13 | 0.45 |
| 2008 | 7 | 0.24 |
| 2007 | 0 | 0 |
| 2006 | under 1 | 0.018 |
| 2005 | 2 | 0.045 |
| 2004 | under 1 | 0.02 |
| 2003 | 5 | 0.099 |
| 2002 | 2 | 0.087 |
| 2001 | 9 | 0.34 |
| 2000 | 13 | 0.4 |
| 1999 | 28 | 0.69 |
| 1998 | 31 | 0.62 |
| 1997 | 47 | 0.83 |
| 1996 | 82 | 1.4 |
| 1995 | 81 | 1.4 |
| 1994 (Nov–Dec) | 50 | 1.1 |
Field details
| Status | Production ceased |
|---|---|
| Type | Gas field |
| Operator | ONE-Dyas |
| Partners |
|
| Original operator | Shell |
| Discovered | June 1983 (well 49/25a-5) |
| First production | November 1994 |
| Water depth | 32 m |
| Region | Southern North Sea |
| Wells inside the outline | 1 |
Platforms and installations
No platforms or production ships are recorded on the field or within 2 km of it.
Licences
The field lies in this current licence:
Nearby
- Fields within 10 km: South Sean (1 km), North Sean (1.3 km), Indefatigable (7.1 km), Orwell (8.8 km).
Sources
Production: NSTA, UKCS field production reports (PPRS), monthly to July 2026. Field details, platforms, licences and wells: NSTA open data, as on the atlas map. Contains information provided by the North Sea Transition Authority and/or other third parties. Used under the NSTA Open User Licence.
Offshore Data Atlas converts the reported volumes to barrels and cubic metres a day (one cubic metre is 6.29 barrels). UK gas figures are all the gas produced, including gas used offshore as fuel, flared or put back into the reservoir.