Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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11.12.2024 - 01:27
Time of last synchronization with Norwegian Offshore Directorate's internal systems

GULLFAKS

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  • General information

    General information
    Attribute Value
    Field name
    Official field name
    GULLFAKS
    Factmaps in new window
    Current activity status
    Current activity status of the field. Example of legal values: SHUT DOWN, PRODUCING, PDO APPROVED
    Producing
    Discovery wellbore
    Name of the wellbore which proved the field.
    Discovery year.
    The year the field was discovered
    1978
    Main area
    Main NCS area. Example of legal values: NORTH SEA, NORWEGIAN SEA, BARENTS SEA
    North sea
    Main supply base
    Main supply base
    Mongstad
    NPDID field
    Norwegian Offshore Directorate's unique id for fields
    43686
  • Picture

    Picture
    GULLFAKS Field
  • Discoveries included

  • Activity status — history

    Activity status — history
    Status
    Status from
    Status to
    Producing
    22.12.1986
    Approved for production
    09.10.1981
    21.12.1986
  • Located in

    Located in
    Block name
    Prod. licence
    34/10
    34/10
  • PDO – Plan for Development and Operations

    PDO – Plan for Development and Operations
    Date PDO approved
    Description
    Type
    08.04.2020
    Hywind Gullfaks
    Changed PDO
    14.06.2019
    Shetland/Lista fase2
    Changed PDO
    14.06.2019
    Endret PUD for Shetland/Lista fase 2
    Changed PDO
    03.12.2015
    Endret PUD/Shet/List
    Changed PDO
    21.12.2005
    Endret PUD Gullfaks
    Changed PDO
    03.02.2004
    34/10-45B PUD fritak
    PDO Exemption
    27.02.2002
    34/10-45S PUD fritak
    PDO Exemption
    03.11.1995
    Gullfaks Lundefm.
    PDO
    15.01.1993
    Gullfaks Vest, Kongen i Statsråd
    PDO
    01.06.1985
    Gullfaks II
    PDO
    09.10.1981
    Behandlet i Stortinget
    PDO
  • Ownership — full history

    Ownership — full history
    Owner kind
    Owner name
    Ownership from date
    Ownership to date
    PRODUCTION LICENSE
    09.10.1981
  • Operatorship — full history

    Operatorship — full history
    Company name
    Operatorship from
    Operatorship to
    16.05.2018
    01.11.2009
    15.05.2018
    01.01.2009
    31.10.2009
    01.10.2007
    31.12.2008
    10.05.2001
    30.09.2007
    09.10.1981
    09.05.2001
  • Licensees — full history

    Licensees — full history
    Company name
    Nation code
    Company share [%]
    Date licensee from
    Date licensee to
    NO
    51.000000
    16.05.2018
    NO
    30.000000
    16.05.2018
    NO
    19.000000
    16.05.2018
    NO
    51.000000
    31.10.2013
    15.05.2018
    NO
    30.000000
    31.10.2013
    15.05.2018
    NO
    19.000000
    31.10.2013
    15.05.2018
    NO
    70.000000
    02.11.2009
    30.10.2013
    NO
    30.000000
    02.11.2009
    30.10.2013
    NO
    70.000000
    01.01.2009
    01.11.2009
    NO
    30.000000
    01.01.2009
    01.11.2009
    NO
    61.000000
    01.10.2007
    31.12.2008
    NO
    30.000000
    01.10.2007
    31.12.2008
    NO
    9.000000
    01.10.2007
    31.12.2008
    NO
    61.000000
    01.01.2007
    30.09.2007
    NO
    30.000000
    01.01.2007
    30.09.2007
    NO
    9.000000
    01.01.2007
    30.09.2007
    NO
    61.000000
    17.06.2001
    31.12.2006
    NO
    30.000000
    17.06.2001
    31.12.2006
    NO
    9.000000
    17.06.2001
    31.12.2006
    NO
    61.000000
    01.06.2001
    16.06.2001
    NO
    30.000000
    01.06.2001
    16.06.2001
    NO
    9.000000
    01.06.2001
    16.06.2001
    NO
    73.000000
    10.05.2001
    31.05.2001
    NO
    18.000000
    10.05.2001
    31.05.2001
    NO
    9.000000
    10.05.2001
    31.05.2001
    NO
    91.000000
    11.12.1999
    09.05.2001
    NO
    9.000000
    11.12.1999
    09.05.2001
    NO
    85.000000
    01.01.1985
    10.12.1999
    NO
    9.000000
    01.01.1985
    10.12.1999
    NO
    6.000000
    01.01.1985
    10.12.1999
    NO
    85.000000
    09.10.1981
    31.12.1984
    NO
    9.000000
    09.10.1981
    31.12.1984
    NO
    6.000000
    09.10.1981
    31.12.1984
  • Norwegian Offshore Directorate – estimate for reserves (Norwegian share)

    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
    Estimates for reserves do not take commercial agreements into consideration.
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
    Valid date:
    31.12.2023
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
    Orig. recoverable oil
    [mill Sm3]
    Orig. recoverable gas
    [bill Sm3]
    Orig. recoverable NGL
    [mill tonn]
    Orig. recoverable cond.
    [mill Sm3]
    Orig. recoverable oil eq.
    [mill Sm3 o.e]
    390.72
    23.08
    2.83
    0.00
    419.18
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
    Orig. inplace oil
    [mill Sm3]
    Orig. inplace ass. liquid
    [mill Sm3]
    Orig. inplace ass. gas
    [bill Sm3]
    Orig. inplace free gas
    [bill Sm3]
    745.00
    0.00
    84.00
    0.00
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
    Remaining oil
    [mill Sm3]
    Remaining gas
    [bill Sm3]
    Remaining NGL
    [mill tonn]
    Remaining cond.
    [mill Sm3]
    Remaining oil eq.
    [mill Sm3 o.e]
    12.95
    0.00
    0.00
    0.00
    12.95
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)
  • Description

    Description
    Type
    Text
    Date updated
    Development
    Gullfaks is a field in the Tampen area in the northern part of the North Sea. The water depth is 130-220 metres. Gullfaks was discovered in 1978, and the plan for development and operation (PDO) for Gullfaks Phase I was approved in 1981. A PDO for Gullfaks Phase II was approved in 1985. The production started in 1986. The field has been developed with three integrated processing, drilling and accommodation facilities with concrete bases (Gullfaks A, B and C). Gullfaks B has a simplified processing plant with first stage separation. The Gullfaks facilities are involved in production and transport from Tordis, Vigdis, Snorre, Visund, Visund Sør and Brime. A PDO for Gullfaks Vest was approved in 1993, and for recovery from the Lunde Formation in 1995. An amended PDO for the Gullfaks field, covering prospects and small discoveries, which could be drilled and produced from existing facilities, was approved in 2005. Amendments to the Gullfaks PDO, covering Phase I and Phase II production from the Shetland/Lista deposit, were approved in 2015 and 2019, respectively. In 2020, an amended PDO for the development of the Hywind Tampen wind farm was approved. The wind farm consists of 11 floating turbines that started supplying electricity to the Gullfaks and Snorre platforms in 2022/2023. These fields are the first in the world receiving power from a floating wind farm.
    13.12.2023
    Reservoir
    Gullfaks produces oil 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. Recoverable oil is also present in fractured carbonate and shale in the overlying Shetland Group and Lista Formation. The reservoirs are at depths of 1700-2000 metres in rotated fault blocks in the west and a structural horst (raised fault block) in the east, with a highly faulted area in between. Reservoir quality is generally good to very good in the Jurassic reservoirs within each fault compartment, but poor reservoir communication is a challenge for pressure maintenance.
    13.12.2023
    Recovery strategy
    The drive mechanism for the main reservoirs is primarily water injection, with gas injection and water alternating gas injection (WAG) in some areas. Initially, the drainage strategy for the Shetland/Lista reservoir was depletion, but pressure support by water injection has now been implemented.
    28.02.2023
    Transport
    Oil is exported from Gullfaks A and Gullfaks C via loading buoys onto tankers. Rich gas is transported by Statpipe for further processing at the Kårstø terminal.
    28.02.2023
    Status
    Drilling of new wells on Gullfaks has been challenging for many years due to overpressured areas in the Shetland/Lista interval. Production from the Shetland/Lista reservoirs has gradually contributed to reduced overpressures and improved drillability. Additional wells are being drilled continuously from all platforms. Hywind Tampen started power production 2022/2023.
    13.12.2023
  • Investments (expected)

    Investments (expected)
    The operator's future investments related to the reserves from 2023 [mill NOK 2023-kroner]. The stated investment estimate has not been corrected for possible investment sharing.
    28815
  • Investments (historical)

    Investments (historical)
    Investments
    [mill NOK nominal values]
    Sum
    111353
    2022
    3631
    2021
    3047
    2020
    2757
    2019
    3462
    2018
    3533
    2017
    2693
    2016
    3480
    2015
    3116
    2014
    3602
    2013
    3347
    2012
    3745
    2011
    2941
    2010
    2471
    2009
    2622
    2008
    2224
    2007
    1485
    2006
    1212
    2005
    1248
    2004
    1395
    2003
    1544
    2002
    1194
    2001
    1257
    2000
    1010
    1999
    1216
    1998
    1072
    1997
    1095
    1996
    857
    1995
    1073
    1994
    683
    1993
    1529
    1992
    1481
    1991
    1265
    1990
    1187
    1989
    3114
    1988
    4447
    1987
    8965
    1986
    9691
    1985
    7336
    1984
    5268
    1983
    2821
    1982
    880
    1981
    357
  • Production , saleable

    Production , saleable
    Month
    Net - oil
    [mill Sm3]
    Net - gas
    [bill Sm3]
    Net - condensate
    [mill Sm3]
    Net - NGL
    [mill Sm3]
    Net - oil equivalents
    [mill Sm3]
    Sum
    378.457953
    23.077293
    0.000000
    5.188282
    406.723528
    2024
    0.907841
    0.000000
    0.000000
    0.000000
    0.907841
    2023
    1.331800
    0.000000
    0.000000
    0.000000
    1.331800
    2022
    1.628335
    0.000000
    0.000000
    0.000000
    1.628335
    2021
    1.736165
    0.000000
    0.000000
    0.000000
    1.736165
    2020
    2.408227
    0.000000
    0.000000
    0.000000
    2.408227
    2019
    2.754750
    0.000000
    0.000000
    0.000000
    2.754750
    2018
    2.675509
    0.000000
    0.000000
    0.000000
    2.675509
    2017
    2.043233
    0.000000
    0.000000
    0.000000
    2.043233
    2016
    2.279256
    0.000000
    0.000000
    0.000000
    2.279256
    2015
    2.098276
    0.000000
    0.000000
    0.000000
    2.098276
    2014
    2.136387
    0.000000
    0.000000
    0.000000
    2.136387
    2013
    2.568067
    0.000000
    0.000000
    0.000000
    2.568067
    2012
    2.537106
    0.000000
    0.000000
    0.000000
    2.537106
    2011
    2.663029
    0.000000
    0.000000
    0.000000
    2.663029
    2010
    3.959405
    0.089829
    0.000000
    0.029930
    4.079164
    2009
    4.689915
    0.227613
    0.000000
    0.072721
    4.990249
    2008
    5.305486
    0.333240
    0.000000
    0.322071
    5.960797
    2007
    5.560263
    0.236004
    0.000000
    0.257056
    6.053323
    2006
    6.429326
    0.492866
    0.000000
    0.195578
    7.117770
    2005
    8.346418
    0.447541
    0.000000
    0.217165
    9.011124
    2004
    9.712272
    0.578601
    0.000000
    0.232312
    10.523185
    2003
    9.506187
    0.621735
    0.000000
    0.252403
    10.380325
    2002
    9.210722
    0.605040
    0.000000
    0.162583
    9.978345
    2001
    10.531939
    0.827120
    0.000000
    0.196686
    11.555745
    2000
    13.272057
    0.901957
    0.000000
    0.161710
    14.335724
    1999
    17.277185
    0.968084
    0.000000
    0.164634
    18.409903
    1998
    19.854842
    1.455468
    0.000000
    0.243637
    21.553947
    1997
    24.121289
    1.684111
    0.000000
    0.189060
    25.994460
    1996
    25.445015
    1.772801
    0.000000
    0.201980
    27.419796
    1995
    28.090946
    1.873128
    0.000000
    0.378054
    30.342128
    1994
    30.743270
    2.016501
    0.000000
    0.448404
    33.208175
    1993
    28.676620
    2.069095
    0.000000
    0.494592
    31.240307
    1992
    25.027100
    1.799395
    0.000000
    0.337307
    27.163802
    1991
    19.906698
    1.309804
    0.000000
    0.237480
    21.453982
    1990
    14.829574
    1.004890
    0.000000
    0.144990
    15.979454
    1989
    15.489959
    1.059438
    0.000000
    0.151071
    16.700468
    1988
    8.639010
    0.581511
    0.000000
    0.080098
    9.300619
    1987
    4.019991
    0.121521
    0.000000
    0.016760
    4.158272
    1986
    0.044483
    0.000000
    0.000000
    0.000000
    0.044483
  • Production , sum wellbores

    Production , sum wellbores
    Month
    Gross - oil
    [mill Sm3]
    Gross - gas
    [bill Sm3]
    Gross - condensate
    [mill Sm3]
    Gross - oil equivalents
    [mill Sm3]
    Sum
    378.548877
    109.881856
    0.000000
    488.430733
    2024
    0.950804
    0.413290
    0.000000
    1.364094
    2023
    1.372771
    0.443161
    0.000000
    1.815932
    2022
    1.641601
    0.514015
    0.000000
    2.155616
    2021
    1.759614
    1.010345
    0.000000
    2.769959
    2020
    2.393322
    1.604578
    0.000000
    3.997900
    2019
    2.739431
    1.693604
    0.000000
    4.433035
    2018
    2.675509
    1.506550
    0.000000
    4.182059
    2017
    2.043233
    1.271081
    0.000000
    3.314314
    2016
    2.279256
    1.324785
    0.000000
    3.604041
    2015
    2.098276
    1.103785
    0.000000
    3.202061
    2014
    2.136387
    0.837036
    0.000000
    2.973423
    2013
    2.568067
    0.751235
    0.000000
    3.319302
    2012
    2.537106
    0.668529
    0.000000
    3.205635
    2011
    2.663029
    4.223458
    0.000000
    6.886487
    2010
    3.959405
    5.028124
    0.000000
    8.987529
    2009
    4.689915
    6.260276
    0.000000
    10.950191
    2008
    5.305486
    6.878976
    0.000000
    12.184462
    2007
    5.560263
    7.622524
    0.000000
    13.182787
    2006
    6.429326
    6.388665
    0.000000
    12.817991
    2005
    8.346418
    7.140370
    0.000000
    15.486788
    2004
    9.712771
    6.582288
    0.000000
    16.295059
    2003
    9.506187
    5.100419
    0.000000
    14.606606
    2002
    9.210722
    4.907585
    0.000000
    14.118307
    2001
    10.531939
    3.760919
    0.000000
    14.292858
    2000
    13.272057
    3.129553
    0.000000
    16.401610
    1999
    17.277185
    2.464687
    0.000000
    19.741872
    1998
    19.854842
    2.607437
    0.000000
    22.462279
    1997
    24.121289
    3.080629
    0.000000
    27.201918
    1996
    25.445015
    3.046106
    0.000000
    28.491121
    1995
    28.090946
    3.170041
    0.000000
    31.260987
    1994
    30.743270
    3.244003
    0.000000
    33.987273
    1993
    28.676620
    3.045140
    0.000000
    31.721760
    1992
    25.027100
    2.671968
    0.000000
    27.699068
    1991
    19.906698
    2.101448
    0.000000
    22.008146
    1990
    14.829574
    1.504295
    0.000000
    16.333869
    1989
    15.489959
    1.521168
    0.000000
    17.011127
    1988
    8.639010
    0.879439
    0.000000
    9.518449
    1987
    4.019991
    0.376690
    0.000000
    4.396681
    1986
    0.044483
    0.003654
    0.000000
    0.048137
  • Production – charts

    Production – charts
    Graph Net oe
    Production – charts
    Graph Net oil
    Production – charts
    Graph Net gas
    Production – charts
    Graph Net gas
    Production – charts