Oil field · UK

Guillemot West

Name: Guillemot West oil field monthly production
Creator: North Sea Transition Authority
License: https://www.nstauthority.co.uk/footer/terms-and-conditions/

Guillemot West is an oil field in the central North Sea, operated by Dana Petroleum Limited. It was discovered in 1983 and has produced since 2000.

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Production

Guillemot West has produced about 30.3 million barrels of oil and condensate and 2 billion cubic metres of gas since April 2000.

Oil and condensate, barrels a day, by month

Latest: 300 barrels a day in January 2026. Highest year: 2003, averaging 10,000 barrels a day. Highest month: January 2004.

Gas, million cubic metres a day, by month

Latest: 0.094 million cubic metres a day in January 2026. Highest year: 2001, averaging 0.88 million cubic metres a day. Highest month: August 2001.

Average production by year

Year	Oil and condensate, barrels a day	Gas, million m³ a day
2026 (Jan)	300	0.094
2025	340	0.11
2024	930	0.11
2023	1,000	0.081
2022	740	0.008
2021	1,200	0.013
2020	820	0.015
2019	1,200	0.041
2018	1,500	0.066
2017	2,700	0.051
2016	3,200	0.065
2015	1,700	0.022
2014	390	0.02
2013	300	0.018
2012	1,300	0.04
2011	3,300	0.064
2010	4,500	0.17
2009	3,000	0.075
2008	1,100	0.02
2007	2,700	0.087
2006	2,300	0.088
2005	2,700	0.52
2004	8,200	0.84
2003	10,000	0.78
2002	9,800	0.82
2001	9,000	0.88
2000 (Apr–Dec)	12,000	0.61

Field details

Status	Producing
Type	Oil field
Operator	Dana Petroleum Limited
Partners	Dana Petroleum (E&P) Limited 90% Serica Energy Mistral Limited 10%
Original operator	Shell
Discovered	February 1983 (well 21/25-3)
First production	April 2000
Water depth	88 m
Region	Central North Sea
Wells inside the outline	27

Platforms and installations

No platforms or production ships are recorded on the field or within 2 km of it. It is probably produced through wells on the seabed, piped to a platform elsewhere.

Licences

The field lies in these 3 current licences:

P13Adura Energy, Dana Petroleum Limited, Hibiscus Petroleum, NEO NEXT+ Energy, Ping Petroleum Limited, Serica Energy

P21Dana Petroleum Limited

P215Dana Petroleum Limited, Serica Energy

Nearby

Fields within 10 km: Guillemot A (0 km), Guillemot North West (0.8 km), Guillemot North (1.4 km), Gannet B (2.7 km), Teal South (3.6 km), Gannet C (3.7 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.