Gullfaks Sør
North Sea · Oil/gas · Producing · Operator Equinor Energy AS
Gullfaks Sør is an oil and gas field in the North Sea operated by Equinor Energy AS, discovered in 1978 by wellbore 34/10-2. The Norwegian Offshore Directorate lists it as producing.
In the 12 months reported through August 2026 it sold 7.14 million Sm³ of oil equivalents (1.13 million Sm³ of oil, 5.22 billion Sm³ of gas), down 5% on the 12 months before.
Since October 1998 it has reported 184.1 million Sm³ of oil equivalents: 62.9 million Sm³ of oil and 98.5 billion Sm³ of gas.
3 companies hold it; the largest share is Equinor Energy AS with 51%.
171 wellbores are on file for the field.
- 7.14
- mill Sm³ o.e., last 12 reported -5%
- 1.13
- mill Sm³ oil, last 12
- 5.22
- bill Sm³ gas, last 12
- 184.1
- mill Sm³ o.e. since Oct 1998
- 171
- wellbores on file
- 3
- licensees today
SODIR PRODUCTION PROFILES · SALEABLE VOLUMES · REPORTED THROUGH AUG 2026
Oil by month
TEN YEARS · SM³ SOLD
Last 12 months 1,130,743 · prior 12 1,222,112(-7%)
Gas by month
TEN YEARS · SM³ SOLD
Last 12 months 5,215,989,000 · prior 12 5,424,712,000(-4%)
Produced water by month
TEN YEARS · SM³ IN THE FIELD
Last 12 months 611,910 · prior 12 782,322(-22%)
Licensees
SHARES TODAY · LICENCE 050
| Company | Share | Since |
|---|---|---|
| Equinor Energy ASOPERATOR | 51% | Sep 1, 2025 |
| Petoro AS | 30% | Sep 1, 2025 |
| OMV Norge AS | 19% | Sep 1, 2025 |
Production licence 050: ownership history and register messages →
Reserves
THE DIRECTORATE'S ESTIMATE · AS OF DEC 31, 2025
These are the Norwegian Offshore Directorate's own year-end estimates, shown as it publishes them. Petrora does not estimate reserves.
| Oil, mill Sm³ | Gas, bill Sm³ | NGL, mill tonnes | Condensate, mill Sm³ | O.e., mill Sm³ | |
|---|---|---|---|---|---|
| Originally recoverable | 67.4 | 111.8 | 13.8 | 0 | 205.4 |
| Remaining | 5.5 | 16.5 | 2.31 | 0 | 26.4 |
About the field
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
- Development
- Gullfaks Sør is a field in the northern part of the North Sea, just south of the Gullfaks field. The water depth is 130-220 metres. Gullfaks Sør was discovered in 1978, but comprises several discoveries made in later years. The Gullfaks Sør deposits have been developed with a total of 13 subsea templates tied-back to the Gullfaks A and Gullfaks C facilities. The initial plan for development and operation (PDO) for Gullfaks Sør Phase I was approved in 1996 and included production of oil and condensate from the Gullfaks Sør, Rimfaks and Gullveig deposits. The production started in 1998. The PDO for Phase II was approved in 1998 and included production of gas from the Brent Group in the Gullfaks Sør deposit. In 2004, the Gulltopp discovery was included in Gullfaks Sør. Gulltopp is produced through an extended reach production well from the Gullfaks A facility. A PDO for the Skinfaks discovery and Rimfaks IOR was approved in 2005. An amended PDO for the redevelopment of Gullfaks Sør Statfjord Formation with two new subsea templates was approved in 2012. A PDO for Gullfaks Rimfaksdalen, which includes the Rutil and Opal deposits, was approved in 2015. It consists of a new subsea template and four production wells. Since 2017, gas production is increased by two subsea wet gas compressors, tied-back to the Gullfaks C platform. A PDO exemption for some prospects and small discoveries, which can be drilled and produced from existing Gullfaks Sør facilities, was granted in 2018. A PDO exemption for the Opal Sør deposit was granted in 2019.
- Reservoir
- The Gullfaks Sør deposits produce oil and gas from Middle Jurassic sandstone in the Brent Group and from Lower Jurassic and Upper Triassic sandstone in the Statfjord Group and Cook and Lunde Formations. The reservoirs are in several rotated fault blocks at depths of 2400-3400 metres. The reservoirs in the Gullfaks Sør deposit are heavily segmented, with many internal faults and challenging flow characteristics, especially in the Statfjord Group and Lunde Formation. The other deposits in the Gullfaks Sør area have generally good reservoir quality.
- Recovery strategy
- The Brent reservoir in Gullfaks Sør is mainly produced by pressure depletion after gas injection ceased in 2009. Pressure support from gas injection started for the Skinfaks Sør deposit in 2023. The Lunde Formation in Gullfaks Sør is produced with depletion as well as pressure support from gas injection. Gas export from Rimfaks started in 2015, but limited gas injection was maintained in the Brent Group until 2018. The Gullveig, Gulltopp and Rutil deposits are produced by pressure depletion and partial aquifer drive. The Skinfaks deposit is produced with gas lift. The Rutil and Opal deposits are produced by pressure depletion.
- Transport
- The oil is transported to the Gullfaks A facility for processing, storage and further transport by tankers. Rich gas is processed on Gullfaks C and exported through Statpipe to the Kårstø-terminal.
- Status
- The Gullfaks Sør production is on decline, but the field still has significant remaining gas volumes. New wells are continuously drilled in the area with a licence-owned rig. Work is ongoing to optimise gas injection on the field and timing of blowdown of the gas cap in Gullfaks Sør Statfjord.
Production by year
MONTHLY ROWS ADDED UP · NEWEST FIRST
| Year | Oil, mill Sm³ | Gas, bill Sm³ | NGL, mill Sm³ | Condensate, mill Sm³ | O.e., mill Sm³ | Water, mill Sm³ |
|---|---|---|---|---|---|---|
| 20268 MONTHS | 0.7 | 3.47 | 0.52 | 0 | 4.69 | 0.42 |
| 2025 | 1.22 | 5.72 | 0.9 | 0 | 7.84 | 0.64 |
| 2024 | 1.25 | 4.61 | 0.78 | 0 | 6.64 | 0.78 |
| 2023 | 1.39 | 5.03 | 0.8 | 0 | 7.22 | 0.42 |
| 2022 | 1.3 | 5.57 | 0.83 | 0 | 7.7 | 0.42 |
| 2021 | 1.32 | 5.75 | 1.2 | 0 | 8.27 | 0.56 |
| 2020 | 1.23 | 4.88 | 1.23 | 0 | 7.34 | 1.01 |
| 2019 | 1.46 | 4.91 | 1.1 | 0 | 7.47 | 1.11 |
| 2018 | 1.2 | 6.03 | 1.53 | 0 | 8.76 | 1.26 |
| 2017 | 1.49 | 5.92 | 1.59 | 0 | 9 | 1.06 |
| 2016 | 1.69 | 4.33 | 1.27 | 0 | 7.29 | 1.85 |
| 2015 | 1.84 | 3.17 | 0.93 | 0.03 | 5.97 | 1.53 |
| 2014 | 2.23 | 3.38 | 0.98 | 0.02 | 6.61 | 1.6 |
| 2013 | 2.38 | 2.75 | 0.77 | 0 | 5.9 | 1.77 |
| 2012 | 1.88 | 2.44 | 0.67 | 0 | 4.98 | 1.44 |
| 2011 | 1.59 | 1.61 | 0.28 | 0 | 3.48 | 0.33 |
| 2010 | 2.09 | 2.34 | 0.74 | 0 | 5.16 | 0.16 |
| 2009 | 3.01 | 2.64 | 0.82 | 0 | 6.46 | 0.45 |
| 2008 | 3.11 | 3.74 | 0.88 | 0 | 7.72 | 0.36 |
| 2007 | 3.28 | 4.04 | 1.02 | 0 | 8.34 | 0.61 |
| 2006 | 2.93 | 3.64 | 0.97 | 0 | 7.54 | 0.56 |
| 2005 | 3.89 | 3.8 | 0.82 | 0 | 8.52 | 0.39 |
| 2004 | 4.17 | 3.21 | 0.74 | 0 | 8.13 | 0.19 |
| 2003 | 3.38 | 2.54 | 0.58 | 0 | 6.5 | 0.18 |
| 2002 | 3.73 | 1.89 | 0.46 | 0 | 6.07 | 0.24 |
| 2001 | 3.84 | 0.6 | 0.15 | 0 | 4.59 | 0.37 |
| 2000 | 2.99 | 0.5 | 0.1 | 0 | 3.6 | 0.19 |
| 1999 | 2.21 | 0 | 0 | 0 | 2.21 | 0 |
| 19983 MONTHS | 0.07 | 0 | 0 | 0 | 0.07 | 0 |
Wellbores
Production 98 · Injection 21 · Observation 19 · Appraisal 18 · Wildcat 14 · Soil drilling 1
All 171 wellbores in Gullfaks Sør, searchable → · Discovery wellbore 34/10-2 →
Operator history
- Equinor Energy ASMay 16, 2018 to today
- Statoil Petroleum ASNov 1, 2009 to May 15, 2018
- StatoilHydro Petroleum ASJan 1, 2009 to Oct 31, 2009
- StatoilHydro ASAOct 1, 2007 to Dec 31, 2008
- Statoil ASA (old)May 10, 2001 to Sep 30, 2007
- Den norske stats oljeselskap a.sMar 29, 1996 to May 9, 2001
This field on Sodir FactPages →
About this data
Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Production is saleable volume by month from the Directorate's profiles, cut at the latest month any field has reported; yearly and cumulative figures are those months added up. Shares are the current rows of the field's licensee history. Reserves are the Directorate's estimate.
Developers: this page as JSON is GET /v1/data/norway/fields/43699, documented in the API reference.