Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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04.11.2024 - 01:25
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SLEIPNER ØST

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  • General information

    General information
    Attribute Value
    Field name
    Official field name
    SLEIPNER ØST
    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
    1981
    Main area
    Main NCS area. Example of legal values: NORTH SEA, NORWEGIAN SEA, BARENTS SEA
    North sea
    Main supply base
    Main supply base
    Dusavik
    NPDID field
    Norwegian Offshore Directorate's unique id for fields
    43478
  • Picture

    Picture
    SLEIPNER ØST Field
  • Discoveries included

    Discoveries included
    Discovery name
  • Activity status — history

    Activity status — history
    Status
    Status from
    Status to
    Producing
    24.08.1993
    Approved for production
    15.12.1986
    23.08.1993
  • Located in

    Located in
    Block name
    Prod. licence
    15/9
  • PDO – Plan for Development and Operations

    PDO – Plan for Development and Operations
    Date PDO approved
    Description
    Type
    11.02.2021
    Endret PUD. Sleipner kraft fra land av OED
    Changed PDO
    31.01.2007
    PUD fritak Pi-struktur
    PDO Exemption
    29.08.1995
    Loke Trias av Kongen i Statsråd
    PDO
    14.05.1991
    Loke Heimdal av Kongen i Statsråd
    PDO
    15.12.1986
    Behandlet i Stortinget
    PDO
  • Ownership — full history

    Ownership — full history
    Owner kind
    Owner name
    Ownership from date
    Ownership to date
    BUSINESS ARRANGEMENT AREA
    15.01.1993
    PRODUCTION LICENSE
    15.12.1986
    14.01.1993
  • 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
    15.12.1986
    09.05.2001
  • Licensees — full history

    Licensees — full history
    Company name
    Nation code
    Company share [%]
    Date licensee from
    Date licensee to
    NO
    59.600000
    25.09.2024
    NO
    25.000000
    25.09.2024
    NO
    15.400000
    25.09.2024
    NO
    59.600000
    18.06.2024
    24.09.2024
    NO
    25.000000
    18.06.2024
    24.09.2024
    NO
    15.400000
    18.06.2024
    24.09.2024
    NO
    59.600000
    23.01.2024
    17.06.2024
    NO
    15.400000
    23.01.2024
    17.06.2024
    NO
    15.000000
    23.01.2024
    17.06.2024
    NO
    10.000000
    23.01.2024
    17.06.2024
    NO
    59.600000
    02.05.2023
    22.01.2024
    NO
    15.400000
    02.05.2023
    22.01.2024
    NO
    15.000000
    02.05.2023
    22.01.2024
    NO
    10.000000
    02.05.2023
    22.01.2024
    NO
    59.600000
    28.01.2022
    01.05.2023
    NO
    15.400000
    28.01.2022
    01.05.2023
    NO
    15.000000
    28.01.2022
    01.05.2023
    NO
    10.000000
    28.01.2022
    01.05.2023
    NO
    59.600000
    10.12.2019
    27.01.2022
    NO
    15.400000
    10.12.2019
    27.01.2022
    NO
    15.000000
    10.12.2019
    27.01.2022
    NO
    10.000000
    10.12.2019
    27.01.2022
    NO
    59.600000
    16.05.2018
    09.12.2019
    NO
    15.400000
    16.05.2018
    09.12.2019
    NO
    15.000000
    16.05.2018
    09.12.2019
    NO
    10.000000
    16.05.2018
    09.12.2019
    NO
    59.600000
    21.12.2016
    15.05.2018
    NO
    15.400000
    21.12.2016
    15.05.2018
    NO
    15.000000
    21.12.2016
    15.05.2018
    NO
    10.000000
    21.12.2016
    15.05.2018
    NO
    59.600000
    31.12.2015
    20.12.2016
    NO
    15.400000
    31.12.2015
    20.12.2016
    NO
    15.000000
    31.12.2015
    20.12.2016
    NO
    10.000000
    31.12.2015
    20.12.2016
    NO
    59.600000
    01.11.2009
    30.12.2015
    NO
    30.400000
    01.11.2009
    30.12.2015
    NO
    10.000000
    01.11.2009
    30.12.2015
    NO
    59.600000
    01.01.2009
    31.10.2009
    NO
    30.400000
    01.01.2009
    31.10.2009
    NO
    10.000000
    01.01.2009
    31.10.2009
    NO
    49.600000
    01.10.2007
    31.12.2008
    NO
    30.400000
    01.10.2007
    31.12.2008
    NO
    10.000000
    01.10.2007
    31.12.2008
    NO
    10.000000
    01.10.2007
    31.12.2008
    NO
    49.600000
    01.01.2007
    30.09.2007
    NO
    30.400000
    01.01.2007
    30.09.2007
    NO
    10.000000
    01.01.2007
    30.09.2007
    NO
    10.000000
    01.01.2007
    30.09.2007
    NO
    49.600000
    01.10.2004
    31.12.2006
    NO
    30.400000
    01.10.2004
    31.12.2006
    NO
    10.000000
    01.10.2004
    31.12.2006
    NO
    10.000000
    01.10.2004
    31.12.2006
    NO
    49.600000
    06.05.2003
    30.09.2004
    NO
    30.400000
    06.05.2003
    30.09.2004
    NO
    10.000000
    06.05.2003
    30.09.2004
    NO
    10.000000
    06.05.2003
    30.09.2004
    NO
    49.600000
    01.06.2001
    05.05.2003
    NO
    30.400000
    01.06.2001
    05.05.2003
    NO
    10.000000
    01.06.2001
    05.05.2003
    NO
    10.000000
    01.06.2001
    05.05.2003
    NO
    30.400000
    10.05.2001
    31.05.2001
    NO
    29.600000
    10.05.2001
    31.05.2001
    NO
    20.000000
    10.05.2001
    31.05.2001
    NO
    10.000000
    10.05.2001
    31.05.2001
    NO
    10.000000
    10.05.2001
    31.05.2001
    NO
    49.600000
    24.07.2000
    09.05.2001
    NO
    30.400000
    24.07.2000
    09.05.2001
    NO
    10.000000
    24.07.2000
    09.05.2001
    NO
    10.000000
    24.07.2000
    09.05.2001
    NO
    49.600000
    01.01.1998
    23.07.2000
    NO
    30.400000
    01.01.1998
    23.07.2000
    NO
    10.000000
    01.01.1998
    23.07.2000
    NO
    10.000000
    01.01.1998
    23.07.2000
    NO
    49.600000
    15.01.1993
    31.12.1997
    NO
    30.400000
    15.01.1993
    31.12.1997
    NO
    10.000000
    15.01.1993
    31.12.1997
    NO
    9.000000
    15.01.1993
    31.12.1997
    NO
    1.000000
    15.01.1993
    31.12.1997
    NO
    49.600000
    01.01.1988
    14.01.1993
    NO
    30.400000
    01.01.1988
    14.01.1993
    NO
    10.000000
    01.01.1988
    14.01.1993
    NO
    9.000000
    01.01.1988
    14.01.1993
    NO
    1.000000
    01.01.1988
    14.01.1993
    NO
    40.000000
    01.01.1987
    31.12.1987
    NO
    40.000000
    01.01.1987
    31.12.1987
    NO
    10.000000
    01.01.1987
    31.12.1987
    NO
    9.000000
    01.01.1987
    31.12.1987
    NO
    1.000000
    01.01.1987
    31.12.1987
    NO
    50.000000
    15.12.1986
    31.12.1986
    NO
    40.000000
    15.12.1986
    31.12.1986
    NO
    10.000000
    15.12.1986
    31.12.1986
  • Norwegian Offshore Directorate – estimate for reserves (Norwegian share)

    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]
    0.42
    69.43
    13.41
    26.62
    121.95
    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]
    0.00
    77.00
    0.00
    91.00
    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]
    0.03
    0.18
    0.01
    0.00
    0.23
  • Description

    Description
    Type
    Text
    Date updated
    Development
    Sleipner Øst is a field in the central part of the North Sea. The water depth is 80 metres. Sleipner Øst was discovered in 1981, and the plan for development and operation (PDO) was approved in 1986. The field has been developed with Sleipner A, an integrated processing, drilling and accommodation facility with a concrete base structure. The development includes the Sleipner R riser facility, which connects Sleipner A to the pipelines for gas transport, and the Sleipner T facility for processing and CO2 removal. The production started in 1993. A PDO for Loke Heimdal was approved in 1991 and for Loke Triassic in 1995. Two subsea templates were installed, one for production from the northern part of Sleipner Øst and one for production from the Loke deposit. The Alpha Nord segment was developed in 2004 with a subsea template connected to Sleipner T. The Utgard field is tied-back to Sleipner T for processing and CO2 removal. The CO2 is injected into the Utsira Formation via a dedicated well at Sleipner A. The Sigyn, Gungne, Gudrun and Gina Krog fields are tied-back to Sleipner A.
    14.12.2023
    Reservoir
    Sleipner Øst produces gas and condensate. The Sleipner Øst and Loke reservoirs are in Paleocene turbidite sandstone in the Ty Formation, Middle Jurassic shallow marine sandstone in the Hugin Formation and in continental sandstone in the Triassic Skagerrak Formation. In addition, gas has been proven in the Heimdal Formation, overlying the Ty Formation. The Ty Formation has good reservoir quality, while the Skagerrak Formation generally has poorer reservoir quality than both Ty and Hugin Formations. The reservoirs are at a depth of 2300 metres.
    14.12.2023
    Recovery strategy
    The Hugin Formation reservoir is produced by pressure depletion. The reservoir in the Ty Formation was produced by dry gas recycling until 2005, and production from the Ty reservoir stopped in 2012. To optimise production, wells are produced at a reduced inlet pressure.
    28.02.2023
    Transport
    Sales gas is exported from the Sleipner A facility via Gassled (Area D) to market. Unstable condensate is transported to the Kårstø terminal by pipeline.
    28.02.2023
    Status
    Sleipner Øst is in the late tail production phase. The main focus is on increasing reserves and decreasing production decline. It is expected that Sleipner Øst continues operation for tied-back fields after cease of own production. From 2024, the facilities in the Sleipner area will be partly operated with power from shore.
    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.
    1423
  • Investments (historical)

    Investments (historical)
    Investments
    [mill NOK nominal values]
    Sum
    29733
    2022
    290
    2021
    589
    2020
    14
    2019
    75
    2018
    56
    2017
    90
    2016
    219
    2015
    344
    2014
    406
    2013
    488
    2012
    406
    2011
    201
    2010
    213
    2009
    562
    2008
    961
    2007
    503
    2006
    323
    2005
    297
    2004
    198
    2003
    65
    2002
    311
    2001
    290
    2000
    356
    1999
    162
    1998
    214
    1997
    23
    1996
    147
    1995
    284
    1994
    484
    1993
    3835
    1992
    6571
    1991
    4718
    1990
    3670
    1989
    1757
    1988
    538
    1987
    73
  • 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
    0.407984
    197.737423
    26.832274
    25.339522
    250.317202
    2024
    0.009763
    0.052348
    0.000000
    0.003534
    0.065645
    2023
    0.016763
    0.088312
    0.000000
    0.005671
    0.110746
    2022
    0.014301
    0.077978
    0.000000
    0.003922
    0.096201
    2021
    0.017419
    0.089121
    0.000000
    0.013465
    0.120005
    2020
    0.031902
    0.142350
    0.000000
    0.033088
    0.207339
    2019
    0.043317
    0.171056
    0.000000
    0.045884
    0.260257
    2018
    0.043449
    0.203320
    0.000000
    0.040501
    0.287270
    2017
    0.052767
    0.136266
    0.000000
    0.032373
    0.221406
    2016
    0.058753
    0.292202
    0.000000
    0.056587
    0.407542
    2015
    0.067935
    0.349050
    0.000000
    0.074973
    0.491958
    2014
    0.051615
    1.511883
    0.017880
    0.086656
    1.668034
    2013
    0.000000
    5.939875
    0.060071
    0.141961
    6.141907
    2012
    0.000000
    6.895643
    0.090722
    0.209146
    7.195511
    2011
    0.000000
    8.098495
    0.142569
    0.262186
    8.503250
    2010
    0.000000
    8.088174
    0.143849
    0.311903
    8.543926
    2009
    0.000000
    10.083317
    0.218891
    0.405797
    10.708005
    2008
    0.000000
    11.335180
    0.309336
    0.484124
    12.128640
    2007
    0.000000
    13.420229
    0.412751
    0.610363
    14.443343
    2006
    0.000000
    13.215261
    0.467099
    0.699644
    14.382004
    2005
    0.000000
    14.321462
    0.606960
    0.805603
    15.734025
    2004
    0.000000
    12.691870
    0.719983
    0.903865
    14.315718
    2003
    0.000000
    13.232623
    1.014870
    1.083105
    15.330598
    2002
    0.000000
    13.480653
    1.528643
    1.733532
    16.742828
    2001
    0.000000
    11.641258
    1.876867
    1.821244
    15.339369
    2000
    0.000000
    11.805584
    2.113172
    1.854324
    15.773080
    1999
    0.000000
    8.069493
    2.636656
    2.206482
    12.912631
    1998
    0.000000
    7.197881
    2.586032
    2.102149
    11.886062
    1997
    0.000000
    7.500478
    2.699619
    2.187024
    12.387121
    1996
    0.000000
    7.625174
    3.195352
    2.548212
    13.368738
    1995
    0.000000
    5.195400
    3.168372
    2.488660
    10.852432
    1994
    0.000000
    3.951791
    2.382600
    1.784172
    8.118563
    1993
    0.000000
    0.833696
    0.439980
    0.299372
    1.573048
  • 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
    0.000000
    100.996871
    55.881257
    156.878128
    2024
    0.000000
    0.060093
    0.015963
    0.076056
    2023
    0.000000
    0.101140
    0.024891
    0.126031
    2022
    0.000000
    0.086189
    0.021452
    0.107641
    2021
    0.000000
    0.092821
    0.033199
    0.126020
    2020
    0.000000
    0.146186
    0.074882
    0.221068
    2019
    0.000000
    0.175034
    0.107993
    0.283027
    2018
    0.000000
    0.193511
    0.118950
    0.312461
    2017
    0.000000
    0.135812
    0.068759
    0.204571
    2016
    0.000000
    0.294393
    0.133436
    0.427829
    2015
    0.000000
    0.354067
    0.164696
    0.518763
    2014
    0.000000
    0.369868
    0.175100
    0.544968
    2013
    0.000000
    0.446234
    0.229403
    0.675637
    2012
    0.000000
    0.660071
    0.350523
    1.010594
    2011
    0.000000
    0.937199
    0.463767
    1.400966
    2010
    0.000000
    1.250855
    0.509733
    1.760588
    2009
    0.000000
    2.079077
    0.621018
    2.700095
    2008
    0.000000
    3.768615
    0.873694
    4.642309
    2007
    0.000000
    4.733220
    1.058932
    5.792152
    2006
    0.000000
    4.931997
    1.211097
    6.143094
    2005
    0.000000
    5.748003
    1.437178
    7.185181
    2004
    0.000000
    5.464820
    1.637331
    7.102151
    2003
    0.000000
    5.538229
    2.159766
    7.697995
    2002
    0.000000
    6.816798
    3.327475
    10.144273
    2001
    0.000000
    7.365597
    3.812764
    11.178361
    2000
    0.000000
    7.111043
    4.310640
    11.421683
    1999
    0.000000
    7.441610
    5.113046
    12.554656
    1998
    0.000000
    7.254411
    5.238331
    12.492742
    1997
    0.000000
    7.217855
    5.425087
    12.642942
    1996
    0.000000
    7.513916
    6.020084
    13.534000
    1995
    0.000000
    7.034157
    5.967261
    13.001418
    1994
    0.000000
    4.747486
    4.346173
    9.093659
    1993
    0.000000
    0.926564
    0.828633
    1.755197
  • Production – charts

    Production – charts
    Graph Net oe
    Production – charts
    Graph Net oil
    Production – charts
    Graph Net gas
    Production – charts
    Graph Net gas
    Production – charts
    Graph Net NGL
    Production – charts
    Graph Water
    Any produced water is only included after 1.1.2000
  • Wellbores – exploration

    Wellbores – exploration
    Wellbore name
    Entered date
    Completed date
    Purpose
    Status
    Content
    04.05.1981
    14.07.1981
    WILDCAT
    P&A
    GAS/CONDENSATE
    18.09.1981
    23.12.1981
    APPRAISAL
    P&A
    GAS/CONDENSATE
    21.03.1982
    27.05.1982
    APPRAISAL
    P&A
    GAS/CONDENSATE
    28.06.1982
    24.08.1982
    APPRAISAL
    P&A
    GAS/CONDENSATE
    09.12.1982
    30.03.1983
    WILDCAT
    P&A
    GAS/CONDENSATE
    28.04.1991
    04.05.1991
    WILDCAT
    P&A
    GAS/CONDENSATE
    16.02.1994
    20.03.1994
    WILDCAT
    RE-CLASS TO DEV
    GAS
  • Wellbores – development

    Wellbores – development
    Wellbore name
    Entered date
    Completed date
    Purpose
    Content
    15.01.2000
    10.03.2000
    INJECTION
    GAS
    29.08.1994
    03.11.1994
    PRODUCTION
    GAS
    16.09.1993
    06.10.1993
    PRODUCTION
    GAS
    31.12.2001
    26.01.2002
    PRODUCTION
    GAS
    20.04.1995
    07.03.1996
    PRODUCTION
    GAS
    22.05.1994
    08.06.1994
    PRODUCTION
    GAS
    06.08.1993
    02.09.1993
    PRODUCTION
    GAS
    01.07.2002
    10.08.2002
    PRODUCTION
    GAS
    09.07.1995
    02.08.1995
    PRODUCTION
    GAS
    14.11.2008
    02.01.2009
    OBSERVATION
    NOT APPLICABLE
    06.01.2009
    26.01.2009
    PRODUCTION
    GAS/CONDENSATE
    09.08.2007
    11.04.2008
    PRODUCTION
    DRY
    07.05.2008
    24.06.2008
    PRODUCTION
    GAS/CONDENSATE
    12.01.1995
    02.03.1995
    PRODUCTION
    GAS
    13.03.1996
    04.04.1996
    INJECTION
    CO2
    12.03.2007
    28.05.2007
    PRODUCTION
    GAS/CONDENSATE
    28.05.1995
    02.07.1995
    INJECTION
    GAS
    12.03.1995
    14.04.1995
    PRODUCTION
    GAS
    09.11.1994
    27.12.1994
    PRODUCTION
    GAS
    16.02.1994
    20.03.1994
    PRODUCTION
    GAS
    PRODUCTION
    27.09.1996
    21.11.1996
    INJECTION
    GAS
    14.04.2005
    17.05.2005
    PRODUCTION
    GAS
    13.03.2009
    24.03.2009
    PRODUCTION
    GAS/CONDENSATE
    27.03.1994
    07.05.1994
    INJECTION
    GAS
    07.07.2001
    05.09.2001
    PRODUCTION
    GAS
    04.01.1994
    30.01.1994
    PRODUCTION
    GAS
    01.07.1994
    23.08.1994
    INJECTION
    WATER
    07.11.1993
    18.12.1993
    INJECTION
    GAS
    13.10.1992
    12.11.1992
    PRODUCTION
    GAS
    28.03.1998
    14.05.1998
    PRODUCTION
    GAS
    01.04.1993
    16.04.1993
    PRODUCTION
    GAS
    03.03.1993
    27.03.1993
    PRODUCTION
    GAS
  • Wellbores – other

    Wellbores – other
    Wellbore name
    Entered date
    Completed date
    Purpose
    Status