Gas field · UK
Indefatigable South West
Indefatigable South West is a gas field in the southern North Sea, operated by Perenco Oil & Gas. It was discovered in 1967 and has produced since 1989.
Production
Indefatigable South West has produced about 118,000 barrels of oil and condensate and 2.1 billion cubic metres of gas since October 1995. The NSTA's monthly records for the field begin in October 1995, but it started producing in October 1989, so earlier output isn't included.
Latest: 0.016 million cubic metres a day in June 2026. Highest year: 1997, averaging 0.58 million cubic metres a day. Highest month: December 1997.
Latest: under 1 barrels a day in June 2026. Highest year: 1996, averaging 53 barrels a day. Highest month: April 1996.
Average production by year
| Year | Oil and condensate, barrels a day | Gas, million m³ a day |
|---|---|---|
| 2026 (Jan–Jun) | 2 | 0.036 |
| 2025 | under 1 | 0.04 |
| 2024 | under 1 | 0.054 |
| 2023 | under 1 | 0.027 |
| 2022 | 4 | 0.064 |
| 2021 | 3 | 0.043 |
| 2020 | 7 | 0.085 |
| 2019 | 6 | 0.098 |
| 2018 | 12 | 0.16 |
| 2017 | 7 | 0.092 |
| 2016 | 3 | 0.043 |
| 2015 | 5 | 0.059 |
| 2014 | 3 | 0.14 |
| 2013 | 0 | 0.28 |
| 2012 | 0 | 0.37 |
| 2011 | 0 | 0.43 |
| 2010 | 0 | 0.1 |
| 2009 | 1 | 0.02 |
| 2008 | under 1 | 0.005 |
| 2007 | 2 | 0.046 |
| 2006 | 4 | 0.085 |
| 2005 | 6 | 0.13 |
| 2004 | 9 | 0.17 |
| 2003 | 12 | 0.2 |
| 2002 | 23 | 0.4 |
| 2001 | 30 | 0.51 |
| 2000 | 20 | 0.34 |
| 1999 | 32 | 0.54 |
| 1998 | 23 | 0.49 |
| 1997 | 43 | 0.58 |
| 1996 | 53 | 0.14 |
| 1995 (Oct–Dec) | 47 | 0 |
Field details
| Status | Producing |
|---|---|
| Type | Gas field |
| Operator | Perenco Oil & Gas |
| Partners |
|
| Original operator | Amoco |
| Discovered | June 1967 (well 49/23-2) |
| First production | October 1989 |
| Water depth | 25 m |
| Region | Southern North Sea |
| Wells inside the outline | 1 |
Platforms and installations
Licences
The field lies in this current licence:
Nearby
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.