Vest Ekofisk
North Sea · Gas/condensate · Approved for production · Operator ConocoPhillips Skandinavia AS
Vest Ekofisk is a gas and condensate field in the North Sea operated by ConocoPhillips Skandinavia AS, discovered in 1970 by wellbore 2/4-6. The Norwegian Offshore Directorate lists it as approved for production.
No production has been reported since July 1998.
Since May 1977 it has reported 41 million Sm³ of oil equivalents: 12.2 million Sm³ of oil and 26 billion Sm³ of gas.
4 companies hold it; the largest share is Vår Energi ASA with 52.28%.
21 wellbores are on file for the field.
- 0
- mill Sm³ o.e., last 12 reported
- 0
- mill Sm³ oil, last 12
- 0
- bill Sm³ gas, last 12
- 41
- mill Sm³ o.e. since May 1977
- 21
- wellbores on file
- 4
- licensees today
SODIR PRODUCTION PROFILES · SALEABLE VOLUMES · REPORTED THROUGH AUG 2026 · LAST VOLUME JUL 1998
Licensees
SHARES TODAY · LICENCE 018 F
| Company | Share | Since |
|---|---|---|
| Vår Energi ASA | 52.284% | Dec 19, 2025 |
| ConocoPhillips Skandinavia ASOPERATOR | 35.112% | Dec 19, 2025 |
| ORLEN Upstream Norway AS | 7.604% | Dec 19, 2025 |
| Petoro AS | 5% | Dec 19, 2025 |
Production licence 018 F: 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 | 12.2 | 26 | 1.53 | 0 | 41 |
| Remaining | 0 | 0 | 0 | 0 | 0 |
About the field
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
- Development
- Vest Ekofisk is a field in the southern part of the Norwegian sector in the North Sea, five kilometres west of the Ekofisk field. The water depth is 70 metres. Vest Ekofisk was discovered in 1970. The original plan for development and operation (PDO) was approved in 1973, and production started in 1977. The field was developed with a combined drilling, production and living quarters facility. Vest Ekofisk was shut down in 1998, and the facility was removed in 2012. A PDO for the redevelopment of Vest Ekofisk was approved in 2026. The development concept includes a subsea template with three wells tied back to the Ekofisk Centre.
- Reservoir
- The reservoir contains gas and condensate from fractured chalk of Late Cretaceous age in the Tor Formation and of early Paleocene age in the Ekofisk Formation. The reservoir is at a depth of 3200 metres above a salt dome.
- Recovery strategy
- The field will be produced by pressure depletion.
- Transport
- The well stream will be transported via pipeline to the Ekofisk Complex for further export.
- Status
- The field is under development, and the production is planned to start in 2028.
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 |
|---|---|---|---|---|---|---|
| 19987 MONTHS | 0.03 | 0.09 | 0.02 | 0 | 0.13 | 0 |
| 1997 | 0.05 | 0.17 | 0.03 | 0 | 0.24 | 0 |
| 1996 | 0.05 | 0.2 | 0.03 | 0 | 0.28 | 0 |
| 1995 | 0.07 | 0.25 | 0.04 | 0 | 0.36 | 0 |
| 1994 | 0.1 | 0.35 | 0.05 | 0 | 0.5 | 0 |
| 1993 | 0.11 | 0.41 | 0.06 | 0 | 0.58 | 0 |
| 1992 | 0.1 | 0.36 | 0.05 | 0 | 0.5 | 0 |
| 1991 | 0.12 | 0.41 | 0.06 | 0 | 0.6 | 0 |
| 1990 | 0.16 | 0.52 | 0.1 | 0 | 0.78 | 0 |
| 1989 | 0.21 | 0.75 | 0.14 | 0 | 1.1 | 0 |
| 1988 | 0.28 | 1.07 | 0.2 | 0 | 1.56 | 0 |
| 1987 | 0.28 | 1.25 | 0.2 | 0 | 1.73 | 0 |
| 1986 | 0.33 | 1.34 | 0.22 | 0 | 1.89 | 0 |
| 1985 | 0.38 | 1.29 | 0.23 | 0 | 1.9 | 0 |
| 1984 | 0.4 | 1.28 | 0.21 | 0 | 1.89 | 0 |
| 1983 | 0.52 | 1.68 | 0.28 | 0 | 2.48 | 0 |
| 1982 | 0.52 | 1.67 | 0.23 | 0 | 2.42 | 0 |
| 1981 | 0.55 | 1.49 | 0.19 | 0 | 2.22 | 0 |
| 1980 | 1.16 | 2.88 | 0.35 | 0 | 4.39 | 0 |
| 1979 | 2.14 | 3.91 | 0.24 | 0 | 6.29 | 0 |
| 1978 | 3.85 | 4.35 | 0 | 0 | 8.19 | 0 |
| 19778 MONTHS | 0.75 | 0.26 | 0 | 0 | 1.01 | 0 |
Wellbores
Production 20 · Wildcat 1
All 21 wellbores in Vest Ekofisk, searchable → · Discovery wellbore 2/4-6 →
Operator history
- ConocoPhillips Skandinavia ASMay 6, 2003 to today
- Phillips Petroleum Norsk ASApr 1, 2003 to May 5, 2003
- ConocoPhillips NorgeOct 23, 2002 to Mar 31, 2013
- Phillips Petroleum Company NorwayMay 4, 1973 to Oct 22, 2002
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/43513, documented in the API reference.