Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
sodir.no    Norsk
sodir.no          Norsk
11.12.2024 - 01:27
Time of last synchronization with Norwegian Offshore Directorate's internal systems

TROLL

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  • General information
    General information
    Attribute Value
    Field name
    Official field name
    TROLL
    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
    1979
    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
    46437

  • Picture
    Picture
    TROLL Field

  • Discoveries included
    Discoveries included
    Discovery name

  • Activity status — history
    Activity status — history
    Status
    Status from
    Status to
    Producing
    19.09.1995
    Approved for production
    15.12.1986
    18.09.1995

  • Located in
    Located in
    Block name
    Prod. licence
    31/5
    31/6
    31/3
    31/2
    31/6
    31/3

  • PDO – Plan for Development and Operations
    PDO – Plan for Development and Operations
    Date PDO approved
    Description
    Type
    17.12.2021
    Endret PUD Kraft fra land til Troll Vest av OED
    Changed PDO
    12.12.2018
    Troll fase 3 Step 1 av OED
    PDO
    19.06.2009
    Troll prosjekter av Kongen i Statsråd
    PDO
    01.09.2000
    P2 brønnramme av Kongen i Statsråd
    PDO
    22.02.1999
    Brønngr.T (TVGP) av Kongen i Statsråd
    PDO
    10.06.1997
    TVGPS-J,K,L & Troll C av Kongen i Statsråd
    PDO
    11.10.1996
    TVGPS- I-klyngen av Kongen i Statsråd
    PDO
    20.05.1994
    TVGPS - H-klyngen av Kongen i Statsråd
    PDO
    18.05.1992
    Troll Vest oljeprovins i Stortinget
    PDO
    15.12.1986
    Troll Øst i Stortinget
    PDO

  • Ownership — full history
    Ownership — full history
    Owner kind
    Owner name
    Ownership from date
    Ownership to date
    BUSINESS ARRANGEMENT AREA
    01.01.1987

  • 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
    01.10.2007
    31.12.2008
    01.01.2007
    30.09.2007
    10.05.2001
    30.09.2007
    19.06.1996
    10.05.2001
    18.05.1992
    31.12.2006
    15.12.1986
    19.06.1996

  • Licensees — full history
    Licensees — full history
    Company name
    Nation code
    Company share [%]
    Date licensee from
    Date licensee to
    NO
    56.000000
    18.06.2021
    NO
    30.583850
    18.06.2021
    NO
    8.101450
    18.06.2021
    NO
    3.690960
    18.06.2021
    NO
    1.623740
    18.06.2021
    NO
    56.000000
    16.05.2018
    17.06.2021
    NO
    30.583850
    16.05.2018
    17.06.2021
    NO
    8.101450
    16.05.2018
    17.06.2021
    NO
    3.690960
    16.05.2018
    17.06.2021
    NO
    1.623740
    16.05.2018
    17.06.2021
    NO
    56.000000
    01.11.2009
    15.05.2018
    NO
    30.583850
    01.11.2009
    15.05.2018
    NO
    8.101450
    01.11.2009
    15.05.2018
    NO
    3.690960
    01.11.2009
    15.05.2018
    NO
    1.623740
    01.11.2009
    15.05.2018
    NO
    56.000000
    01.01.2009
    31.10.2009
    NO
    30.583850
    01.01.2009
    31.10.2009
    NO
    8.101450
    01.01.2009
    31.10.2009
    NO
    3.690960
    01.01.2009
    31.10.2009
    NO
    1.623740
    01.01.2009
    31.10.2009
    NO
    56.000000
    01.10.2007
    31.12.2008
    NO
    20.804710
    01.10.2007
    31.12.2008
    NO
    9.779140
    01.10.2007
    31.12.2008
    NO
    8.101450
    01.10.2007
    31.12.2008
    NO
    3.690960
    01.10.2007
    31.12.2008
    NO
    1.623740
    01.10.2007
    31.12.2008
    NO
    56.000000
    02.01.2007
    30.09.2007
    NO
    20.804710
    02.01.2007
    30.09.2007
    NO
    9.779140
    02.01.2007
    30.09.2007
    NO
    8.101450
    02.01.2007
    30.09.2007
    NO
    3.690960
    02.01.2007
    30.09.2007
    NO
    1.623740
    02.01.2007
    30.09.2007
    NO
    56.000000
    01.01.2007
    01.01.2007
    NO
    20.804710
    01.01.2007
    01.01.2007
    NO
    9.779140
    01.01.2007
    01.01.2007
    NO
    8.101450
    01.01.2007
    01.01.2007
    NO
    3.690960
    01.01.2007
    01.01.2007
    NO
    1.623740
    01.01.2007
    01.01.2007
    NO
    56.000000
    06.05.2003
    31.12.2006
    NO
    20.804710
    06.05.2003
    31.12.2006
    NO
    9.779140
    06.05.2003
    31.12.2006
    NO
    8.101450
    06.05.2003
    31.12.2006
    NO
    3.690960
    06.05.2003
    31.12.2006
    NO
    1.623740
    06.05.2003
    31.12.2006
    NO
    56.000000
    22.03.2003
    05.05.2003
    NO
    20.804710
    22.03.2003
    05.05.2003
    NO
    9.779140
    22.03.2003
    05.05.2003
    NO
    8.101450
    22.03.2003
    05.05.2003
    NO
    3.690960
    22.03.2003
    05.05.2003
    NO
    1.623740
    22.03.2003
    05.05.2003
    NO
    56.000000
    18.12.2001
    21.03.2003
    NO
    20.804710
    18.12.2001
    21.03.2003
    NO
    9.779140
    18.12.2001
    21.03.2003
    NO
    8.101450
    18.12.2001
    21.03.2003
    NO
    3.690960
    18.12.2001
    21.03.2003
    NO
    1.623740
    18.12.2001
    21.03.2003
    NO
    56.000000
    17.06.2001
    17.12.2001
    NO
    20.804710
    17.06.2001
    17.12.2001
    NO
    9.779140
    17.06.2001
    17.12.2001
    NO
    8.101450
    17.06.2001
    17.12.2001
    NO
    2.345480
    17.06.2001
    17.12.2001
    NO
    1.623740
    17.06.2001
    17.12.2001
    NO
    1.345480
    17.06.2001
    17.12.2001
    NO
    56.000000
    01.06.2001
    16.06.2001
    NO
    20.804710
    01.06.2001
    16.06.2001
    NO
    9.779140
    01.06.2001
    16.06.2001
    NO
    8.101450
    01.06.2001
    16.06.2001
    NO
    2.345480
    01.06.2001
    16.06.2001
    NO
    1.623740
    01.06.2001
    16.06.2001
    NO
    1.345480
    01.06.2001
    16.06.2001
    NO
    62.927920
    10.05.2001
    31.05.2001
    NO
    13.876780
    10.05.2001
    31.05.2001
    NO
    9.779140
    10.05.2001
    31.05.2001
    NO
    8.101450
    10.05.2001
    31.05.2001
    NO
    2.345480
    10.05.2001
    31.05.2001
    NO
    1.623740
    10.05.2001
    31.05.2001
    NO
    1.345480
    10.05.2001
    31.05.2001
    NO
    76.804710
    11.01.2001
    09.05.2001
    NO
    9.779140
    11.01.2001
    09.05.2001
    NO
    8.101450
    11.01.2001
    09.05.2001
    NO
    2.345480
    11.01.2001
    09.05.2001
    NO
    1.623740
    11.01.2001
    09.05.2001
    NO
    1.345480
    11.01.2001
    09.05.2001
    NO
    76.804710
    24.07.2000
    10.01.2001
    NO
    8.101450
    24.07.2000
    10.01.2001
    NO
    7.717530
    24.07.2000
    10.01.2001
    NO
    2.345480
    24.07.2000
    10.01.2001
    NO
    2.061610
    24.07.2000
    10.01.2001
    NO
    1.623740
    24.07.2000
    10.01.2001
    NO
    1.345480
    24.07.2000
    10.01.2001
    NO
    76.804710
    11.12.1999
    23.07.2000
    NO
    8.101450
    11.12.1999
    23.07.2000
    NO
    7.717530
    11.12.1999
    23.07.2000
    NO
    2.345480
    11.12.1999
    23.07.2000
    NO
    2.061610
    11.12.1999
    23.07.2000
    NO
    1.623740
    11.12.1999
    23.07.2000
    NO
    1.345480
    11.12.1999
    23.07.2000
    NO
    74.743100
    01.10.1999
    10.12.1999
    NO
    8.101450
    01.10.1999
    10.12.1999
    NO
    7.717530
    01.10.1999
    10.12.1999
    NO
    4.123220
    01.10.1999
    10.12.1999
    NO
    2.345480
    01.10.1999
    10.12.1999
    NO
    1.623740
    01.10.1999
    10.12.1999
    NO
    1.345480
    01.10.1999
    10.12.1999
    NO
    74.576000
    01.04.1993
    30.09.1999
    NO
    8.288000
    01.04.1993
    30.09.1999
    NO
    7.688000
    01.04.1993
    30.09.1999
    NO
    4.080000
    01.04.1993
    30.09.1999
    NO
    2.353440
    01.04.1993
    30.09.1999
    NO
    1.661130
    01.04.1993
    30.09.1999
    NO
    1.353430
    01.04.1993
    30.09.1999
    NO
    74.576000
    01.01.1988
    31.03.1993
    NO
    8.288000
    01.01.1988
    31.03.1993
    NO
    7.688000
    01.01.1988
    31.03.1993
    NO
    4.080000
    01.01.1988
    31.03.1993
    NO
    2.353440
    01.01.1988
    31.03.1993
    NO
    2.014560
    01.01.1988
    31.03.1993
    NO
    1.000000
    01.01.1988
    31.03.1993
    NO
    74.576000
    02.01.1987
    31.12.1987
    NO
    8.288000
    02.01.1987
    31.12.1987
    NO
    7.688000
    02.01.1987
    31.12.1987
    NO
    4.080000
    02.01.1987
    31.12.1987
    NO
    2.000000
    02.01.1987
    31.12.1987
    NO
    1.184000
    02.01.1987
    31.12.1987
    NO
    1.184000
    02.01.1987
    31.12.1987
    NO
    1.000000
    02.01.1987
    31.12.1987
    NO
    77.576000
    01.01.1987
    01.01.1987
    NO
    8.288000
    01.01.1987
    01.01.1987
    NO
    7.688000
    01.01.1987
    01.01.1987
    NO
    4.080000
    01.01.1987
    01.01.1987
    NO
    1.184000
    01.01.1987
    01.01.1987
    NO
    1.184000
    01.01.1987
    01.01.1987

  • 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]
    295.76
    1436.56
    21.52
    1.52
    1774.73
    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]
    664.00
    86.00
    38.00
    1625.00
    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]
    2.89
    606.03
    8.05
    0.00
    624.22
    Norwegian Offshore Directorate – estimate for reserves (Norwegian share)

  • Description
    Description
    Type
    Text
    Date updated
    Development
    Troll is a field in the northern part of the North Sea. The water depth is 300-330 metres. Troll was discovered in 1979, and the initial plan for development and operation (PDO) was approved in 1986. The plan was updated in 1990 and involved the transfer of gas processing to the Kollsnes terminal. The production started in 1995. A phased development was pursued for the Troll field, with Phase I recovering gas reserves in Troll Øst and Phase II focusing on the oil reserves in Troll Vest. Troll Phase I has been developed with Troll A, which is a fixed wellhead and compression platform with a concrete substructure. Troll A receives power from shore. The gas compression capacity at Troll A was increased in 2004/2005, and again in 2015. Troll Phase II was developed with Troll B, a floating concrete accommodation and production platform, and Troll C, a semi-submersible accommodation and production steel platform. The oil is produced from several subsea templates tied-back to Troll B and Troll C by flowlines. The production from Troll C started in 1999. The Troll C platform is also utilised for production from the Fram field. Several PDO amendments were approved in connection with various subsea templates at Troll Vest. A PDO for Troll Phase III (gas production from Troll Vest) was approved in 2018 and the production started in August 2021. An amended PDO for power from shore to Troll Vest was approved in 2021.
    14.12.2023
    Reservoir
    Troll contains very large amounts of gas resources and is also one of the largest oil producing fields on the Norwegian continental shelf. The field has two main structures: Troll Øst and Troll Vest. About two-thirds of the recoverable gas reserves lie in Troll Øst. The gas and oil reservoirs in the Troll Øst and Troll Vest structures consist primarily of shallow marine sandstone of Late Jurassic age in the Sognefjord Formation. Part of the reservoir is also in the underlying Fensfjord Formation of Middle Jurassic age. The field consists of three relatively large, rotated fault blocks. The eastern fault block constitutes Troll Øst. The reservoir depth at Troll Øst is 1330 metres. Pressure communication between Troll Øst and Troll Vest has been proven. Originally, the oil column in Troll Øst was mapped to be 0-4 metres thick. A well drilled in 2007 proved an oil column of 6-9 metres in the Fensfjord Formation in the northern segment of Troll Øst. The Troll Vest oil province originally had a 22 to 26-metre-thick oil column under a small gas cap, located at a depth of 1360 metres. The Troll Vest gas province originally had an oil column of 12-14 metres under a gas column of up to 200 metres. The oil column is now reduced to a thickness of only 1 to 5 metres. A significant volume of residual oil is encountered directly below the Troll Vest oil column.
    14.12.2023
    Recovery strategy
    The gas in Troll Øst is recovered by pressure depletion through 39 wells drilled from Troll A. The oil in Troll Vest is produced from long horizontal wells, which penetrate the thin oil zone directly above the oil-water contact. The recovery strategy is based primarily on pressure depletion, but this is accompanied by a simultaneous expansion of both the gas cap above the oil zone and the underlying water zone. Some gas is also reinjected. Produced water was reinjected into the northern part of the Troll Vest oil province from 2000 to 2016.
    28.02.2023
    Transport
    The gas from Troll Øst and Troll Vest is transported through three multiphase pipelines to the gas processing plant at Kollsnes. The condensate is separated from the gas and transported by pipeline to the Mongstad terminal. The dry gas is transported in Zeepipe II A and II B to Zeebrugge in Belgium. The oil from Troll B and Troll C is transported in the Troll Oil Pipelines I and II, respectively, to the oil terminal at Mongstad.
    28.02.2023
    Status
    More than two million reservoir metres have been drilled on Troll. Drilling of new oil production wells on Troll concluded altogether in 2023; however, the need for future oil wells will be considered regularly. A new gas compressor module on the Troll C platform started in 2020 to increase gas production and processing capacity. The production from the first stage of the Troll Phase III development started in 2021. The development includes eight new gas production wells on Troll Vest and a flowline to the Troll A facility.
    14.12.2023

  • 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.
    26235

  • Investments (historical)
    Investments (historical)
    Investments
    [mill NOK nominal values]
    Sum
    242658
    2022
    7901
    2021
    9018
    2020
    10953
    2019
    10879
    2018
    9499
    2017
    8967
    2016
    9784
    2015
    10030
    2014
    12734
    2013
    13040
    2012
    9233
    2011
    8663
    2010
    7628
    2009
    7752
    2008
    6130
    2007
    4225
    2006
    3217
    2005
    3202
    2004
    3471
    2003
    4067
    2002
    3590
    2001
    4583
    2000
    4421
    1999
    6671
    1998
    7836
    1997
    3747
    1996
    3268
    1995
    10887
    1994
    15964
    1993
    11358
    1992
    5067
    1991
    1466
    1990
    1023
    1989
    1631
    1988
    598
    1987
    111
    1986
    44

  • 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
    292.894023
    840.055804
    4.336981
    25.454581
    1162.741389
    2024
    1.446144
    32.142367
    0.000000
    1.004419
    34.592930
    2023
    2.336129
    37.464095
    0.000000
    1.322136
    41.122360
    2022
    3.627620
    39.784204
    0.000000
    1.285285
    44.697109
    2021
    4.068170
    37.360772
    0.000000
    1.373866
    42.802808
    2020
    4.992512
    35.079929
    0.000000
    1.323925
    41.396366
    2019
    6.258794
    31.566853
    0.000000
    1.197068
    39.022715
    2018
    6.410338
    38.561240
    0.000000
    1.481820
    46.453398
    2017
    7.243926
    36.744024
    0.000000
    1.467838
    45.455788
    2016
    7.348277
    31.870987
    0.000000
    1.281961
    40.501225
    2015
    7.014225
    34.633036
    0.000000
    1.337468
    42.984729
    2014
    7.297566
    29.045362
    0.000000
    1.229872
    37.572800
    2013
    7.096653
    29.633672
    0.000000
    1.234984
    37.965309
    2012
    7.100418
    34.407045
    0.000000
    1.410960
    42.918423
    2011
    7.264058
    24.795676
    0.000000
    0.929534
    32.989268
    2010
    6.869503
    28.555833
    0.000000
    1.072321
    36.497657
    2009
    7.849241
    24.401123
    0.000000
    1.065454
    33.315818
    2008
    8.168300
    29.738551
    0.000000
    1.074746
    38.981597
    2007
    9.425518
    35.779575
    0.000000
    1.369338
    46.574431
    2006
    10.819943
    30.700516
    0.000000
    1.400218
    42.920677
    2005
    14.092675
    28.339581
    0.000000
    1.309736
    43.741992
    2004
    17.763824
    26.361623
    0.449720
    0.281632
    44.856799
    2003
    20.820795
    26.169063
    1.512246
    0.000000
    48.502104
    2002
    21.194248
    25.581420
    0.767708
    0.000000
    47.543376
    2001
    19.502882
    21.433229
    0.639472
    0.000000
    41.575583
    2000
    18.361509
    24.665884
    0.750300
    0.000000
    43.777693
    1999
    12.908774
    25.461365
    0.217535
    0.000000
    38.587674
    1998
    13.253887
    19.954323
    0.000000
    0.000000
    33.208210
    1997
    14.767039
    14.317157
    0.000000
    0.000000
    29.084196
    1996
    13.323611
    5.507299
    0.000000
    0.000000
    18.830910
    1995
    2.856165
    0.000000
    0.000000
    0.000000
    2.856165
    1994
    0.060584
    0.000000
    0.000000
    0.000000
    0.060584
    1993
    0.060122
    0.000000
    0.000000
    0.000000
    0.060122
    1992
    0.063210
    0.000000
    0.000000
    0.000000
    0.063210
    1991
    0.176052
    0.000000
    0.000000
    0.000000
    0.176052
    1990
    1.051311
    0.000000
    0.000000
    0.000000
    1.051311

  • 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
    294.649472
    894.222228
    29.663596
    1218.535296
    2024
    1.384428
    30.440415
    0.866126
    32.690969
    2023
    2.389234
    39.002919
    1.266832
    42.658985
    2022
    3.632470
    41.282023
    1.139830
    46.054323
    2021
    4.116721
    38.000065
    1.322863
    43.439649
    2020
    4.856229
    36.498701
    1.214977
    42.569907
    2019
    6.200099
    33.922180
    1.125389
    41.247668
    2018
    6.502598
    40.685710
    1.385143
    48.573451
    2017
    7.384678
    39.122667
    1.373776
    47.881121
    2016
    7.548823
    34.293526
    1.197189
    43.039538
    2015
    7.245365
    36.849054
    1.331233
    45.425652
    2014
    7.455175
    30.960997
    1.217745
    39.633917
    2013
    7.188952
    30.851459
    1.234186
    39.274597
    2012
    7.145524
    35.712974
    1.408297
    44.266795
    2011
    7.356829
    25.934871
    0.931720
    34.223420
    2010
    6.968235
    28.922218
    1.070464
    36.960917
    2009
    7.924823
    25.087567
    1.077705
    34.090095
    2008
    8.359859
    30.631988
    1.081355
    40.073202
    2007
    9.610627
    36.947890
    1.372834
    47.931351
    2006
    11.234736
    31.588795
    1.403517
    44.227048
    2005
    14.226591
    29.237897
    1.313743
    44.778231
    2004
    18.209670
    26.892045
    0.731352
    45.833067
    2003
    21.074094
    26.749771
    0.638312
    48.462177
    2002
    21.444962
    26.374841
    0.657794
    48.477597
    2001
    19.559256
    23.036154
    0.553671
    43.149081
    2000
    18.419033
    26.699789
    0.650786
    45.769608
    1999
    12.584980
    26.545612
    0.642286
    39.772878
    1998
    12.826140
    21.942577
    0.538932
    35.307649
    1997
    14.541928
    15.979548
    0.416773
    30.938249
    1996
    13.204408
    8.430291
    0.193570
    21.828269
    1995
    2.871300
    2.225937
    0.046057
    5.143294
    1994
    0.000000
    3.309587
    0.067864
    3.377451
    1993
    0.000000
    3.390223
    0.067879
    3.458102
    1992
    0.000000
    3.922517
    0.070689
    3.993206
    1991
    0.124637
    2.666053
    0.052707
    2.843397
    1990
    1.057068
    0.083367
    0.000000
    1.140435

  • Production – charts
    Production – charts
    Graph Net oe
    Production – charts