Gas field · UK
Tethys
Tethys is a gas field in the southern North Sea, operated by Harbour Energy PLC. It was discovered in 1991 and produced from 2007 to 2018. Production has ceased. Over its life it produced about 499 million cubic metres of gas.
Production
Tethys produced about 92,000 barrels of oil and condensate and 499 million cubic metres of gas between March 2007 and March 2018.
Latest: 0.008 million cubic metres a day in March 2018. Highest year: 2008, averaging 0.29 million cubic metres a day. Highest month: March 2007.
Latest: 1 barrels a day in March 2018. Highest year: 2008, averaging 48 barrels a day. Highest month: March 2007.
Average production by year
| Year | Oil and condensate, barrels a day | Gas, million m³ a day |
|---|---|---|
| 2018 (Jan–Mar) | 2 | 0.013 |
| 2017 | 2 | 0.014 |
| 2016 | 4 | 0.032 |
| 2015 | 1 | 0.009 |
| 2014 | 5 | 0.029 |
| 2013 | 13 | 0.053 |
| 2012 | 5 | 0.022 |
| 2011 | 14 | 0.061 |
| 2010 | 26 | 0.11 |
| 2009 | 31 | 0.14 |
| 2008 | 48 | 0.29 |
| 2007 (Mar–Dec) | 120 | 0.72 |
Field details
| Status | Production ceased |
|---|---|
| Type | Gas field |
| Operator | Harbour Energy PLC |
| Partners |
|
| Original operator | ConocoPhillips |
| Discovered | February 1991 (well 49/11b-8) |
| First production | February 2007 |
| Water depth | 34 m |
| Region | Southern North Sea |
| Wells inside the outline | 2 |
Platforms and installations
No platforms or production ships are recorded on the field or within 2 km of it.
Licences
The field lies in these 2 current licences:
Nearby
- Fields within 10 km: Saturn (1.9 km), Ann (3.6 km), Audrey (5.2 km), Viking A (7.9 km), Wenlock (8.4 km).
- Wind farms within 40 km: Hornsea One (23 km), Hornsea Two (35 km).
- Protected areas overlapping the field: Southern North Sea SAC.
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.