NORWAY · FIELDS · NPDID 1028599
Tambar
North Sea · Oil · Producing · Operator Aker BP ASA
Tambar is an oil field in the North Sea operated by Aker BP ASA, discovered in 1983 by wellbore 1/3-3. The Norwegian Offshore Directorate lists it as producing.
In the 12 months reported through August 2026 it sold 0.33 million Sm³ of oil equivalents (0.32 million Sm³ of oil, 0 billion Sm³ of gas), up 1% on the 12 months before.
Since July 2001 it has reported 13 million Sm³ of oil equivalents: 12.4 million Sm³ of oil and 0 billion Sm³ of gas.
2 companies hold it; the largest share is Aker BP ASA with 55%.
9 wellbores are on file for the field.
- 0.33
- mill Sm³ o.e., last 12 reported +1%
- 0.32
- mill Sm³ oil, last 12
- 0
- bill Sm³ gas, last 12
- 13
- mill Sm³ o.e. since Jul 2001
- 9
- wellbores on file
- 2
- licensees today
SODIR PRODUCTION PROFILES · SALEABLE VOLUMES · REPORTED THROUGH AUG 2026
Oil by month
TEN YEARS · SM³ SOLD
Last 12 months 322,947 · prior 12 313,847(+3%)
Produced water by month
TEN YEARS · SM³ IN THE FIELD
Last 12 months 71,821 · prior 12 19,083(+276%)
Licensees
SHARES TODAY · LICENCE 065
| Company | Share | Since |
|---|---|---|
| Aker BP ASAOPERATOR | 55% | Dec 17, 2025 |
| DNO Norge AS | 45% | Dec 17, 2025 |
Production licence 065: 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 | 2.62 | 0.27 | 0 | 15.3 |
| Remaining | 0.36 | 0.07 | 0.01 | 0 | 0.44 |
About the field
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
- Development
- Tambar is a field in the southern part of the Norwegian sector in the North Sea, 16 kilometres southeast of the Ula field. The water depth is 70 metres. Tambar was discovered in 1983, and the plan for development and operation (PDO) was approved in 2000. The field has been developed with a remotely controlled wellhead platform tied-back to the Ula field. The production started in 2001.
- Reservoir
- Tambar produces oil from Upper Jurassic shallow marine sandstone in the Ula Formation. The reservoir is at a depth of 4100-4200 metres and has generally very good quality.
- Recovery strategy
- The field is produced by pressure depletion, with natural gas expansion combined with aquifer support. Gas lift is used to improve production performance.
- Transport
- The oil is transported by pipeline to Ula. After processing at Ula, the oil is exported in the pipeline system via the Ekofisk field to Teesside in the UK, while the gas is injected into the Ula reservoir to improve oil recovery.
- Status
- Tambar is currently in the late life phase. The production is declining due to decreased reservoir pressure and increasing water cut. Production from Tambar is dependent on the lifetime of the Ula field which is planned to be shut down 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 |
|---|---|---|---|---|---|---|
| 20268 MONTHS | 0.2 | 0 | 0.01 | 0 | 0.2 | 0.07 |
| 2025 | 0.4 | 0 | 0.01 | 0 | 0.42 | 0.02 |
| 2024 | 0.09 | 0 | 0.01 | 0 | 0.1 | 0.02 |
| 2023 | 0.16 | 0 | 0.01 | 0 | 0.16 | 0.04 |
| 2022 | 0.1 | 0 | 0.01 | 0 | 0.1 | 0.02 |
| 2021 | 0.2 | 0 | 0.01 | 0 | 0.21 | 0.04 |
| 2020 | 0.25 | 0 | 0.01 | 0 | 0.27 | 0.03 |
| 2019 | 0.22 | 0 | 0.01 | 0 | 0.23 | 0.02 |
| 2018 | 0.33 | 0 | 0.02 | 0 | 0.35 | 0.02 |
| 2017 | 0.19 | 0 | 0.01 | 0 | 0.2 | 0.04 |
| 2016 | 0.22 | 0 | 0.01 | 0 | 0.23 | 0.01 |
| 2015 | 0.25 | 0 | 0.01 | 0 | 0.26 | 0 |
| 2014 | 0.33 | 0 | 0.01 | 0 | 0.35 | 0.02 |
| 2013 | 0.24 | 0 | 0.01 | 0 | 0.25 | 0.01 |
| 2012 | 0.23 | 0 | 0.01 | 0 | 0.24 | 0 |
| 2011 | 0.29 | 0 | 0.01 | 0 | 0.3 | 0 |
| 2010 | 0.28 | 0 | 0.01 | 0 | 0.3 | 0 |
| 2009 | 0.34 | 0 | 0.02 | 0 | 0.36 | 0 |
| 2008 | 0.59 | 0 | 0.04 | 0 | 0.63 | 0.03 |
| 2007 | 0.65 | 0 | 0.04 | 0 | 0.69 | 0.02 |
| 2006 | 0.94 | 0 | 0.06 | 0 | 0.99 | 0.02 |
| 2005 | 1.24 | 0 | 0.07 | 0 | 1.31 | 0.01 |
| 2004 | 0.88 | 0 | 0.05 | 0 | 0.93 | 0 |
| 2003 | 1.46 | 0 | 0.07 | 0 | 1.54 | 0.01 |
| 2002 | 1.73 | 0 | 0.09 | 0 | 1.81 | 0.01 |
| 20016 MONTHS | 0.53 | 0 | 0.03 | 0 | 0.56 | 0 |
Wellbores
Production 6 · Appraisal 1 · Observation 1 · Wildcat 1
All 9 wellbores in Tambar, searchable → · Discovery wellbore 1/3-3 →
Operator history
- Aker BP ASANov 30, 2016 to today
- BP Norge ASMar 12, 2002 to Nov 29, 2016
- BP Amoco Norge ASApr 3, 2000 to Mar 11, 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/1028599, documented in the API reference.