Field · the network on the UK Continental Shelf
South Sean
South Sean is a gas field on the UK Continental Shelf, operated by One-Dyas. The map shows the owners.
Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.
The network
From owner to landfall. Links without their own label have their source in the column heading; curated and derived links are labelled at the link.
- The colour shows the content:
- Gas
- Oil
- Condensate
- CO₂
- Oil and condensate
- The line shows the source:
- pipeline in NSTA data
- curated, with the source at the link
- possible onward route, not measured flow
- planned or not in service
The links show direction, not volume.
- ONE-DYAS UK LIMITED50%ONE-Dyas · first seen 8 Oct 2026 · truncated by the source
- ROCKROSE UKCS 10 LIMITED50%Rockrose Energy · first seen 8 Oct 2026 · truncated by the source
Production per month
The source's figures in the source's unit. The oil equivalents in the key figures are converted by the Norwegian Offshore Directorate's rule.
Production per monthNSTA · 8 Oct 2026
| Month | Gas 1,000 Sm³ | Condensate m³ |
|---|---|---|
| March 2026 | 0 | 0 |
| February 2026 | 0 | 2.20 |
| January 2026 | 12.8 | 84.4 |
| December 2025 | 8,995 | 124 |
| November 2025 | 10,547 | 131 |
| October 2025 | 11,574 | 157 |
| September 2025 | 11,601 | 152 |
| August 2025 | 12,453 | 146 |
| July 2025 | 720 | 5.50 |
Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.
Licences
The licences the field lies in, with the licensees as the source states them. A licence share is not a field share.
LicencesNSTA · 8 Oct 2026
| Name | Type | Operator | Licensees |
|---|---|---|---|
| P7 | licence | – | – |
| P54 | licence | – | – |
| P64 | licence | – | – |
Notes
- NSTA's field layer gives the shares in whole percent, truncated (97.13915 is shown as 97). The sum for a field can be below 100%, and share × production then comes out slightly low. For 68 fields the shares with decimals from a subarea in NSTA's licence subareas are used: the subarea carries the field name, exactly the same licensees, shares that truncate to the field layer's whole percent and a sum of 100%.
- NSTA has no share history. OESA keeps its own snapshots of the shares from 8 Oct 2026; changes before that are unknown.
- The production is NSTA's PPRS figures per field and month: oil and condensate in m³, gas (associated and dry gas combined) in 1,000 Sm³. Fields reported in parts are the sum of the parts. Coal mine vents are not included.
- The operator is NSTA's organisation group (for example APACHE CORPORATION), not the legal company holding the share. NSTA does not link installations and pipelines to fields; they are listed under the operator. Only pipelines in use carrying oil, gas, condensate, mixed hydrocarbons or CO₂ are included.
Sources
All figures and links on the page come from these sources. The licence and attribution are as each source requires. Conversions and calculations are OESA's own and labelled with the method.
- NSTA – offshore fields with licensees and shares North Sea Transition Authority · 8 Oct 2026Licence: North Sea Transition Authority User Agreement (June 2023)Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.
- NSTA – licence subareas by equity group holder (exact shares) North Sea Transition Authority · 8 Oct 2026Licence: North Sea Transition Authority User Agreement (June 2023)Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.
- NSTA – field production by month (PPRS) North Sea Transition Authority · 8 Oct 2026Licence: North Sea Transition Authority User Agreement (June 2023)Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.
All sources for United Kingdom
Not in the data: Flow in each pipeline, where the gas ends up, and the buyers of oil and gas.