Company · the network on the UK Continental Shelf

CHRYSAOR LIMITED

CHRYSAOR LIMITED holds stakes in 21 fields on the UK Continental Shelf. The map shows how the fields connect to facilities, pipelines and landfall.

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Calculated equity production, last 12 months: 2.65 million Sm³ o.e.; Estimate · Aug 2025–Jul 2026 · NSTA · 8 Oct 2026
Per day: 46,000 barrels o.e./day; Estimate · Aug 2025–Jul 2026 · NSTA · 8 Oct 2026
Share of production in the United Kingdom: 4.53%; Estimate · Aug 2025–Jul 2026 · NSTA · 8 Oct 2026
Fields with a stake: 21; NSTA · 8 Oct 2026
Licences with a share or operatorship: 10; NSTA · 8 Oct 2026

Estimate: Calculated by OESA, not figures from the company: for each field the share that applied in each month is multiplied by the production from NSTA (Aug 2025–Jul 2026), converted to oil equivalent and summed over 21 fields and licences. Some shares are stated as of 8 Oct 2026 and may have differed earlier in the period. Some shares are truncated by the source. Oil equivalent by the Norwegian Offshore Directorate's rule: oil, condensate and NGL in Sm³ count equally, 1,000 Sm³ of gas = 1 Sm³ o.e. and 1 tonne of NGL = 1.9 Sm³ o.e. Estimate: the source gives m³ without reference conditions, and the figure is treated as Sm³. The error can be up to about 5%. Oil equivalent by the Norwegian Offshore Directorate's rule: oil, condensate and NGL in Sm³ count equally, 1,000 Sm³ of gas = 1 Sm³ o.e. and 1 tonne of NGL = 1.9 Sm³ o.e. The figure applies in the United Kingdom and is not the company's global production. Per day: Sm³ o.e. × 6.29 barrels per Sm³ divided by the number of days in the period. Rounded to the nearest 10 below 1,000, the nearest 100 below 10,000 and the nearest 1,000 above that.

Estimate: The calculated equity production divided by the total for all fields in the source (Aug 2025–Jul 2026), both in oil equivalent. The total for the country is over 233 of 289 fields with production in the period; 56 fields that started or stopped in the period are left out of both.

Attribution: Contains information provided by the North Sea Transition Authority and/or other third parties.

The network

The fields with a stake or operatorship, with facilities, pipelines and landfall. Links without their own label have their source in the column heading.

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.

CHRYSAOR LIMITED21 fields with a stakeGroup: Harbour EnergyRegistration number: GB-COH 06418649

Field and shareNSTA · 8 Oct 2026

Facilities and pipelines

Landfall

Field and shareJudy 30%truncated by the sourcefield 1.19 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareTalbot 30%truncated by the sourcefield 1.06 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareJade 35%field 0.73 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareErskine 32%field 0.60 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareEverest 100%field 0.57 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareBeryl 39%truncated by the sourcefield 0.50 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareJoanne 30.5%field 0.42 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareJasmine 30%truncated by the sourcefield 0.29 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareStorr 41%truncated by the sourcefield 0.24 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareLomond 100%field 0.21 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.

Show all 21Show fewer

Field and shareSeymour 43%truncated by the sourcefield 0.14 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareNevis 42%truncated by the sourcefield 0.14 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareBuckland 37.47%field 0.096 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareFleming 23%truncated by the sourcefield 0.075 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareCallater 45%truncated by the sourcefield 0.066 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareDrake 23%truncated by the sourcefield 0.062 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareHawkins 11%truncated by the sourcefield 0.032 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareSkene 34.04%field 0.028 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareMaria 64%field 0.004 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareLoirston 39%truncated by the sourcefield 0.000 million Sm³ o.e. Aug 2025–Jul 2026
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.
Field and shareNess 39%truncated by the source
Facilities and pipelines
The source does not link facilities to the fields.
Landfall
The source does not show where the production comes ashore.

The group

CHRYSAOR LIMITED belongs to the group Harbour Energy.

The link comes from the source · NSTA · 8 Oct 2026

Licences

The licences where CHRYSAOR LIMITED holds a share or is the operator. A licence share is not a field share.

LicencesNSTA · 8 Oct 2026

Name	Type	Operator	Licensees
P139Beryl, Ness, Nevis	licence	APACHE BERYL I LIMITED	APACHE BERYL I LIMITED 60.56%, CHRYSAOR LIMITED 39.44%
P254Nevis	licence	APACHE BERYL I LIMITED	APACHE BERYL I LIMITED 50.91%, CHRYSAOR LIMITED 49.09%
P337Beryl, Loirston, Ness, Nevis	licence	APACHE BERYL I LIMITED	APACHE BERYL I LIMITED 60.56%, CHRYSAOR LIMITED 39.44%
P355Fleming	licence	CHRYSAOR NORTH SEA LIMITED	CHRYSAOR NORTH SEA LIMITED 50.34%, CHRYSAOR LIMITED 49.66%
P1589	licence	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED	CHRYSAOR LIMITED 35%, CHRYSAOR PETROLEUM COMPANY U.K. LIMITED 32.5%, ITHACA SP E&P LIMITED 17.57%, ITHACA GSA LIMITED 14.93%
P1764	licence	APACHE BERYL I LIMITED	APACHE BERYL I LIMITED 60.56%, CHRYSAOR LIMITED 39.44%
P2221	licence	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED 36.5%, ITHACA EF LIMITED 33%, CHRYSAOR LIMITED 30.5%
P2399	licence	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED 36.5%, ITHACA EF LIMITED 33%, CHRYSAOR LIMITED 30.5%
P2456	licence	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED	CHRYSAOR PETROLEUM COMPANY U.K. LIMITED 36.5%, ITHACA GSA LIMITED 33%, CHRYSAOR LIMITED 30.5%
P2538	licence	–	CHRYSAOR LIMITED 100%

Partners

The companies CHRYSAOR LIMITED shares the most fields with, by current stakes in the source. NSTA · 8 Oct 2026

APACHE BERYL I LIMITED 8 shared fields
CHRYSAOR NORTH SEA LIMITED 5 shared fields
CHRYSAOR PETROLEUM COMPANY U.K. LIMITED 5 shared fields
ITHACA EF LIMITED 3 shared fields
ITHACA GSA LIMITED 2 shared fields
ITHACA ENERGY (UK) LIMITED 1 shared field
ITHACA MA LIMITED 1 shared field
ITHACA SP E&P LIMITED 1 shared field
SERICA ENERGY MISTRAL LIMITED 1 shared field

Notes

The shares are legal ownership shares at NSTA, not the company's reported production.
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, the buyers of oil and gas and the company's contracts.