Sleipner Vest
North Sea · Gas/condensate · Producing · Operator Equinor Energy AS
Sleipner Vest is a gas and condensate field in the North Sea operated by Equinor Energy AS, discovered in 1974 by wellbore 15/6-3. The Norwegian Offshore Directorate lists it as producing.
In the 12 months reported through August 2026 it sold 1.23 million Sm³ of oil equivalents (0.23 million Sm³ of oil, 0.94 billion Sm³ of gas), up 110% on the 12 months before.
Since August 1996 it has reported 90.7 million Sm³ of oil equivalents: 5.9 million Sm³ of oil and 35.2 billion Sm³ of gas.
3 companies hold it; the largest share is Equinor Energy AS with 58.35%.
52 wellbores are on file for the field.
- 1.23
- mill Sm³ o.e., last 12 reported +110%
- 0.23
- mill Sm³ oil, last 12
- 0.94
- bill Sm³ gas, last 12
- 90.7
- mill Sm³ o.e. since Aug 1996
- 52
- 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 234,482 · prior 12 79,806(+194%)
Gas by month
TEN YEARS · SM³ SOLD
Last 12 months 942,194,000 · prior 12 489,741,000(+92%)
Produced water by month
TEN YEARS · SM³ IN THE FIELD
Last 12 months 49,421 · prior 12 15,048(+228%)
Licensees
SHARES TODAY · UNIT SLEIPNER VEST UNIT
| Company | Share | Since |
|---|---|---|
| Equinor Energy ASOPERATOR | 58.3494% | Sep 25, 2024 |
| ORLEN Upstream Norway AS | 24.4112% | Sep 25, 2024 |
| Vår Energi ASA | 17.2394% | Sep 25, 2024 |
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 | 7.49 | 156.8 | 10.6 | 29.7 | 214.2 |
| Remaining | 1.58 | 7.08 | 0.22 | 0 | 9.09 |
About the field
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
- Development
- Sleipner Vest is a field in the central part of the North Sea, 12 km west of Sleipner Øst. The water depth is 110 metres. Sleipner Vest was discovered in 1974, and the plan for development and operation (PDO) was approved in 1992. The field is developed with two platforms: the normally unmanned wellhead platform Sleipner B, which is remotely operated from the Sleipner A facility on the Sleipner Øst field, and the gas treatment platform Sleipner T, connected by a bridge to Sleipner A. The production started in 1996.
- Reservoir
- Sleipner Vest produces gas and condensate mainly from Middle Jurassic sandstone in the Hugin Formation. Minor hydrocarbon volumes occur locally in the Sleipner Formation. The reservoir is at a depth of 3450 metres and is highly segmented. Faults in the field are generally not sealing and communication between the sand deposits is good.
- Recovery strategy
- The field is produced by pressure depletion. CO2 is removed from the gas and injected for storage in the Utsira Formation.
- Transport
- The well stream is sent to the Sleipner A facility for processing. Sales gas is exported from Sleipner A via Gassled (Area D) to the market. Unstable condensate is transported in a pipeline to the Kårstø terminal.
- Status
- Sleipner Vest is in the middle of the tail production phase. To increase the production from the field, the inlet pressure at Sleipner T has been reduced and is planned to be reduced further in the coming years. A drilling campaign started in 2025 and will continue in 2026.
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 | 0.21 | 0.78 | 0.04 | 0 | 1.03 | 0.04 |
| 2025 | 0.08 | 0.44 | 0.02 | 0 | 0.54 | 0.02 |
| 2024 | 0.23 | 1.36 | 0.07 | 0 | 1.67 | 0.05 |
| 2023 | 0.3 | 1.91 | 0.09 | 0 | 2.3 | 0.08 |
| 2022 | 0.2 | 1.31 | 0.06 | 0 | 1.58 | 0.05 |
| 2021 | 0.31 | 1.82 | 0.21 | 0 | 2.34 | 0.11 |
| 2020 | 0.43 | 2.29 | 0.34 | 0 | 3.06 | 0.15 |
| 2019 | 0.52 | 2.82 | 0.4 | 0 | 3.74 | 0.15 |
| 2018 | 0.69 | 3.16 | 0.43 | 0 | 4.28 | 0.17 |
| 2017 | 0.74 | 3.45 | 0.39 | 0 | 4.57 | 0.16 |
| 2016 | 0.77 | 3.62 | 0.39 | 0 | 4.78 | 0.28 |
| 2015 | 0.83 | 4.08 | 0.53 | 0 | 5.43 | 0.36 |
| 2014 | 0.65 | 3.17 | 0.59 | 0.22 | 4.62 | 0.19 |
| 2013 | 0 | 0 | 0.76 | 1.06 | 1.82 | 0.22 |
| 2012 | 0 | 0 | 0.89 | 1.33 | 2.22 | 0.22 |
| 2011 | 0 | 0 | 0.97 | 1.46 | 2.43 | 0.14 |
| 2010 | 0 | 0 | 0.76 | 1.05 | 1.81 | 0.11 |
| 2009 | 0 | 0 | 0.84 | 1.24 | 2.08 | 0.12 |
| 2008 | 0 | 0 | 0.71 | 1.27 | 1.98 | 0.13 |
| 2007 | 0 | 0 | 0.88 | 1.6 | 2.48 | 0.21 |
| 2006 | 0 | 0 | 0.91 | 1.59 | 2.5 | 0.19 |
| 2005 | 0 | 0 | 0.91 | 1.78 | 2.69 | 0.16 |
| 2004 | 0 | 0 | 0.88 | 1.49 | 2.37 | 0.14 |
| 2003 | 0 | 0 | 1.08 | 1.79 | 2.87 | 0.12 |
| 2002 | 0 | 0 | 1.34 | 1.99 | 3.33 | 0.09 |
| 2001 | 0 | 0 | 1.36 | 2.15 | 3.51 | 0.11 |
| 2000 | 0 | 0 | 1.07 | 2.26 | 3.33 | 0.09 |
| 1999 | 0 | 3.1 | 1.08 | 2.38 | 6.56 | 0 |
| 1998 | 0 | 1.45 | 0.86 | 2.26 | 4.58 | 0 |
| 1997 | 0 | 0.44 | 0.78 | 2.26 | 3.48 | 0 |
| 19965 MONTHS | 0 | 0 | 0.21 | 0.5 | 0.7 | 0 |
Wellbores
Production 31 · Appraisal 13 · Observation 4 · Unstated 3 · Wildcat 1
All 52 wellbores in Sleipner Vest, searchable → · Discovery wellbore 15/6-3 →
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.sDec 14, 1992 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/43457, documented in the API reference.