Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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21.11.2024 - 01:28
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15/9-2

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  • General information
    General information
    Attribute Value
    Wellbore name
    Official name of wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    15/9-2
    Type
    Wellbore type. Legal values: EXPLORATION, DEVELOPMENT, OTHER (see 'Purpose' for more information)
    EXPLORATION
    Purpose
    Final classification of the wellbore.

    Legal values for exploration wellbores:
    WILDCAT, APPRAISAL, WILDCAT-CCS, APPRAISAL-CCS.

    Legal values for development wellbores:
    OBSERVATION, PRODUCTION, INJECTION, INJECTION-CCS, OBSERVATION-CCS.

    Legal values for other wellbores:
    SOIL DRILLING (drilling in connection with track surveys and other subsurface surveys to investigate the soil conditions prior to placement of facilities),
    SHALLOW GAS (drilling to investigate shallow gas before the first 'real' drilling on the location),
    PILOT (drilling to investigate the geology and fluid connectors for location of the main wellbore),
    SCIENTIFIC (drilling according to Law of Scientific research and exploration),
    STRATIGRAPHIC (driling according to Law of Petroleum activities §2-1).
    APPRAISAL
    Status
    Status for the wellbore. Legal values are:

    BLOWOUT: A blowout has occurred in the well.
    CLOSED: A development wellbore that has been closed in a shorter or longer periode. Also applies to development wellbores where drilling is completed, but production/injection has not yet been reported.
    DRILLING: The well is in the drilling phase - can be active drilling, logging, testing or plugging,
    JUNKED: The drilling operation has been terminated due to technical problems.
    P&A: Exploration: The well is plugged and abandoned, and can not be reentered for further use. Development wells: The production/injection from/to the well is stopped and the well is plugged. The wellhead is removed or else made unavailable for further well operations.
    PLUGGED: The wellbore has been plugged, but the upper parts of the wellbore can be re-used. A sidetrack might be drilled at a later stage.
    PRODUCING: It was produced from the wellbore at the time of the operators last monthly report to the Norwegian Offshore Directorate.
    INJECTING: It was injected to the wellbore at the time of the operators last monthly report to the Norwegian Offshore Directorate.
    PREDRILLED: The upper part of the well has been drilled, usually as part of a batch-drilling campaign covering several wellbores.
    RE-CLASS TO DEV: Exploration wellbore that is reclassified to a development wellbore.
    RE-CLASS TO TEST: Exploration wellbore that is reclassified to test production.
    SUSPENDED: The drilling operation in the wellbore has been temporarily stopped. The current plan is to continue drilling later on.
    P&A
    Factmaps in new window
    Main area
    Name of the area on the Norwegian Continental Shelf where the wellbore is located. Legal values: BARENTS SEA, NORWEGIAN SEA, NORTH SEA.
    NORTH SEA
    Field
    Name of the field the wellbore is related to.
    Discovery
    Name of the discovery the wellbore is related to.
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    15/9-2
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    Line 510-314.Sp 785
    Production licence
    Official designation of the production licence the wellbore was drilled or planned to be drilled from ( well head posistion).
    Drilling operator
    Name of the licensee starting the drilling operation on behalf of the active production license (well head position). This will usually equal the operator of the production license.
    Den norske stats oljeselskap a.s
    Drill permit
    The drilling permit number together with the version of the drilling permit as stated in the drilling permit granted by the Norwegian Offshore Directorate.
    194-L
    Drilling facility
    Norwegian Offshore Directorate's name of the facility which the wellbore was drilled from.
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    67
    Entered date
    The date when he wellbore was spudded. For sidetracks: The date when new formation was drilled by kicking off from the mother-wellbore,
    12.04.1978
    Completed date
    Exploration wellbores from moveable facilities:
    For floating facilities - date when anchor handling is started. For jackups - date the jacking-down started. Exploration wellbores from fixed facilities and all development wellbores:
    Date when the wellbore is at total depth, and last casing, liner or screen is set. In case of immediate plugging of the wellbore, completed date equals the date the last plug i set in the wellbore.
    Date when the wellbore is at total depth, and last casing, liner or screen is set. In case of immediate plugging of the wellbore, completed date equals the date the last plug i set in the wellbore.
    17.06.1978
    Release date
    Date when raw data which has been reported to the authorities from the wellbore is not confidential any longer. Normally 2 years after finishing the drilling. May be earlier if the area of the production license is relinquished.
    17.06.1980
    Publication date
    Date quality control of the wellbore information was completed, so it can be published on the internet as a 'Well Data Summary Sheet' wellbore with more information available than other wellbores.
    20.05.2015
    Purpose - planned
    Pre-drill purpose of the wellbore. Legal values for exploration wellbores: WILDCAT, APPRAISAL, WILDCAT-CCS, APPRAISAL-CCS. Example of legal values for development wellbores: OBSERVATION, PRODUCTION, INJECTION.
    WILDCAT
    Reentry
    Status whether the wellbore has been re-entered (YES) or not (NO). Re-entered wellbores are not included in the count when wellbores are presented in statistical overviews.
    NO
    Content
    For exploration wellbores, status of discovery.

    Legal values:
    DRY, SHOWS (trace amounts of hydrocarbons), GAS, GAS/CONDENSATE, OIL or OIL/GAS.
    SHOWS (GAS SHOWS, OIL SHOWS or OIL/GAS SHOWS) are detected as fluorescent cut (organic extract), petroleum odour, or visual stain on cuttings or cores, or as increased gas reading on the mud-loggers gas detection equipment.
    Legal values for WILDCAT-CCS and APPRAISAL-CCS: WATER

    For development wellbores, type of produced/injected fluid.
    Legal values:
    WATER, CUTTINGS, NOT AVAILABLE, OIL, GAS/CONDENSATE, OIL/GAS, CO2, GAS, WATER/GAS, NOT APPLICABLE.
    GAS/CONDENSATE
    Discovery wellbore
    Indicator which tells if the wellbore made a new discovery. Legal values: YES, NO. Prior to press-release or other information regarding drilling results, the indicator will be “NO” as a default.
    NO
    1st level with HC, age
    Age of lithostratigraphic unit, 1st level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE. See also Norwegian Offshore Directorate bulletins.
    MIDDLE JURASSIC
    1st level with HC, formation
    Name of lithostartigraphic unit, 1st level, where hydrocarbons were encountered. Shown only for released wells. Examples of legal values: BASEMENT, COOK FM, EKOFISK FM, HEIMDAL FM, SANDNES FM, SOGNEFJORD FM, TARBERT FM, BRENT GP. See also Norwegian Offshore Directorate bulletins.
    HUGIN FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    25.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    108.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3764.0
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    107
    Oldest penetrated age
    Age (according to Geologic Time Scale 2004 by F. M. Gradstein, et al. (2004)) of the oldest penetrated formation. May differ from age at TD for example in deviated wellbores. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EARLY PERMIAN, EARLY TRIASSIC, EOCENE.
    TRIASSIC
    Oldest penetrated formation
    Name of the oldest lithostratigraphic unit penetrated by the wellbore. Shown only for released wells. In most wellbores this is formation or group at total depth. May differ from formation or group at TD for example in wellbores drilled with high deviation or through faults. Examples of legal values: AMUNDSEN FM, BALDER FM, BASEMENT, BLODØKS FM, BRYNE FM, BURTON FM, COOK FM, DRAKE FM, DRAUPNE FM, EKOFISK FM, DUNLIN GP.
    SKAGERRAK FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    58° 25' 34.06'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 42' 28.2'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6477027.07
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    424529.68
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    31
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    323

  • Wellbore history
    General
    Well 15/9-2 was drilled on the Sleipner Vest Field in the North Sea. The primary objective was to test the "beta closure" on the 15/6-3 Sleipner Vest discovery. The target was Middle Jurassic sandstones.
    Operations and results
    Well 15/9-2 was spudded with the semi-submersible installation Ross Rig on 12 April 1978 and drilled to TD at 3764 m in Late Triassic sediments in the Skagerrak Formation. The main problem in operations was the discovery of a washout in the well head 18 3/4" ax seal area after setting 9 5/8" casing. This was repaired so that drilling could proceed, but it was decided not to do the planned DST due to possible leak. Otherwise, operations proceeded without significant problem. The well was drilled with seawater and gel down to 644 m and with gel and lignosulphonate from 644 m to TD.
    The Vestland Group, Hugin Formation was encountered at 3483 m. The Hugin Formation contained gas/condensate down to the OWC between 3652 and 3654 m based on logs and pressure gradients. Weak shows continued down to 3659 m, 2 meters into top Sleipner Formation. Two spots of dead oil and fluorescence on limestone/siltstone cuttings at 2788 and 2812 m in the upper Shetland Group were the only other shows described in the well.
    A total of 186.3 m core was recovered in 11 cores from the interval 3498 m to 3692 m. RFT fluid samples were taken at 3490 m ((gas, condensate, water), 3535,7 m (gas and condensate), 3601.6 m (gas, condensate, water), 3640.4 m (gas, condensate, water), 3641 m (gas, condensate, water), 3641.5 m (gas, condensate, water), 3644 m (gas, condensate, water), 3652 m (gas, condensate, water), and 3654 m (water). The condensate gravity in the samples varied from 50.3 °API in the shallowest sample to 45.5 °API in the sample just above the OWC.
    The well was permanently abandoned on 17 June 1978 as a gas/condensate well.
    Testing
    No drill stem test was performed.

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    YES
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    170.00
    3834.00

  • Cores at the Norwegian Offshore Directorate
    Cores at the Norwegian Offshore Directorate
    Core sample number
    Core sample - top depth
    Core sample - bottom depth
    Core sample depth - uom
    1
    3498.0
    3514.6
    [m ]
    2
    3515.0
    3533.3
    [m ]
    3
    3533.3
    3551.6
    [m ]
    4
    3551.6
    3569.9
    [m ]
    5
    3569.9
    3588.2
    [m ]
    6
    3588.2
    3606.2
    [m ]
    7
    3606.2
    3625.7
    [m ]
    8
    3624.5
    3642.5
    [m ]
    9
    3645.7
    3661.1
    [m ]
    10
    3661.1
    3669.0
    [m ]
    11
    3674.0
    3690.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    185.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 3498-3500m
    Core photo at depth: 3500-3503m
    Core photo at depth: 3503-3506m
    Core photo at depth: 3506-3508m
    Core photo at depth: 3508-3511m
    3498-3500m
    3500-3503m
    3503-3506m
    3506-3508m
    3508-3511m
    Core photo at depth: 3511-3514m
    Core photo at depth: 3514-3515m
    Core photo at depth: 3515-3517m
    Core photo at depth: 3517-3520m
    Core photo at depth: 3520-3523m
    3511-3514m
    3514-3515m
    3515-3517m
    3517-3520m
    3520-3523m
    Core photo at depth: 3523-3525m
    Core photo at depth: 3525-3528m
    Core photo at depth: 3528-3531m
    Core photo at depth: 3531-3533m
    Core photo at depth: 3533-3535m
    3523-3525m
    3525-3528m
    3528-3531m
    3531-3533m
    3533-3535m
    Core photo at depth: 3535-3538m
    Core photo at depth: 3538-3541m
    Core photo at depth: 3541-3544m
    Core photo at depth: 3544-3546m
    Core photo at depth: 3546-3549m
    3535-3538m
    3538-3541m
    3541-3544m
    3544-3546m
    3546-3549m
    Core photo at depth: 3549-3551m
    Core photo at depth: 3551-3554m
    Core photo at depth: 3554-3556m
    Core photo at depth: 3556-3559m
    Core photo at depth: 3559-3562m
    3549-3551m
    3551-3554m
    3554-3556m
    3556-3559m
    3559-3562m
    Core photo at depth: 3562-3565m
    Core photo at depth: 3565-3567m
    Core photo at depth: 3567-3569m
    Core photo at depth: 3569-3572m
    Core photo at depth: 3572-3575m
    3562-3565m
    3565-3567m
    3567-3569m
    3569-3572m
    3572-3575m
    Core photo at depth: 3575-3577m
    Core photo at depth: 3577-3580m
    Core photo at depth: 3580-3583m
    Core photo at depth: 3583-3586m
    Core photo at depth: 3586-3588m
    3575-3577m
    3577-3580m
    3580-3583m
    3583-3586m
    3586-3588m
    Core photo at depth: 3588-3590m
    Core photo at depth: 3590-3593m
    Core photo at depth: 3593-3596m
    Core photo at depth: 3596-3598m
    Core photo at depth: 3598-3601m
    3588-3590m
    3590-3593m
    3593-3596m
    3596-3598m
    3598-3601m
    Core photo at depth: 3601-3604m
    Core photo at depth: 3604-3606m
    Core photo at depth: 3606-3608m
    Core photo at depth: 3608-3611m
    Core photo at depth: 3611-3614m
    3601-3604m
    3604-3606m
    3606-3608m
    3608-3611m
    3611-3614m
    Core photo at depth: 3614-3616m
    Core photo at depth: 3616-3619m
    Core photo at depth: 3619-3622m
    Core photo at depth: 3622-3623m
    Core photo at depth: 3624-3627m
    3614-3616m
    3616-3619m
    3619-3622m
    3622-3623m
    3624-3627m
    Core photo at depth: 3627-3629m
    Core photo at depth: 3629-3632m
    Core photo at depth: 3632-3635m
    Core photo at depth: 3635-3637m
    Core photo at depth: 3637-3640m
    3627-3629m
    3629-3632m
    3632-3635m
    3635-3637m
    3637-3640m
    Core photo at depth: 3640-3642m
    Core photo at depth: 3642-3645m
    Core photo at depth: 3645-3648m
    Core photo at depth: 3648-3650m
    Core photo at depth: 3650-3653m
    3640-3642m
    3642-3645m
    3645-3648m
    3648-3650m
    3650-3653m
    Core photo at depth: 3653-3656m
    Core photo at depth: 3656-3658m
    Core photo at depth: 3658-3660m
    Core photo at depth: 3661-3663m
    Core photo at depth: 3663-3666m
    3653-3656m
    3656-3658m
    3658-3660m
    3661-3663m
    3663-3666m
    Core photo at depth: 3666-3669m
    Core photo at depth: 3674-3676m
    Core photo at depth: 3676-3679m
    Core photo at depth: 3679-3682m
    Core photo at depth: 3682-3684m
    3666-3669m
    3674-3676m
    3676-3679m
    3679-3682m
    3682-3684m
    Core photo at depth: 3684-3687m
    Core photo at depth: 3687-3690m
    Core photo at depth: 3690-3691m
    Core photo at depth:  
    Core photo at depth:  
    3684-3687m
    3687-3690m
    3690-3691m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3148.0
    [m]
    DC
    3178.0
    [m]
    DC
    3208.0
    [m]
    DC
    3238.0
    [m]
    DC
    3262.0
    [m]
    SWC
    3298.0
    [m]
    DC
    3327.0
    [m]
    SWC
    3359.0
    [m]
    SWC
    3365.0
    [m]
    SWC
    3370.0
    [m]
    SWC
    3390.0
    [m]
    SWC
    3397.0
    [m]
    SWC
    3400.0
    [m]
    SWC
    3410.0
    [m]
    SWC
    3420.0
    [m]
    SWC
    3425.0
    [m]
    SWC
    3430.0
    [m]
    SWC
    3438.0
    [m]
    SWC
    3442.0
    [m]
    SWC
    3445.0
    [m]
    SWC
    3452.0
    [m]
    SWC
    3455.0
    [m]
    SWC
    3458.0
    [m]
    SWC
    3460.0
    [m]
    SWC
    3468.0
    [m]
    SWC
    3471.0
    [m]
    SWC
    3475.0
    [m]
    SWC
    3482.0
    [m]
    SWC
    3485.0
    [m]
    SWC
    3495.2
    [m]
    C
    3501.5
    [m]
    C
    3507.0
    [m]
    C
    3512.9
    [m]
    C
    3517.4
    [m]
    C
    3522.5
    [m]
    C
    3528.0
    [m]
    C
    3532.0
    [m]
    C
    3537.0
    [m]
    C
    3542.0
    [m]
    C
    3547.0
    [m]
    C
    3551.8
    [m]
    C
    3551.8
    [m]
    C
    3557.6
    [m]
    C
    3562.0
    [m]
    C
    3567.0
    [m]
    C
    3572.0
    [m]
    C
    3577.0
    [m]
    C
    3582.0
    [m]
    C
    3587.0
    [m]
    C
    3592.0
    [m]
    C
    3597.0
    [m]
    C
    3601.5
    [m]
    C
    3607.0
    [m]
    C
    3613.5
    [m]
    C
    3617.0
    [m]
    C
    3622.0
    [m]
    C
    3627.0
    [m]
    C
    3632.0
    [m]
    C
    3636.3
    [m]
    C
    3642.0
    [m]
    C
    3647.0
    [m]
    C
    3652.0
    [m]
    C
    3657.0
    [m]
    C
    3662.0
    [m]
    C
    3666.0
    [m]
    C
    3672.0
    [m]
    C
    3677.0
    [m]
    C
    3682.0
    [m]
    C
    3687.3
    [m]
    C
    3700.0
    [m]
    SWC
    3708.0
    [m]
    SWC
    3723.0
    [m]
    SWC
    3735.0
    [m]
    SWC
    3750.0
    [m]
    SWC
    3755.0
    [m]
    SWC
    3760.0
    [m]
    SWC

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.58
    pdf
    1.26

  • Documents – reported by the production licence (period for duty of secrecy expired)
    Documents – reported by the production licence (period for duty of secrecy expired)
    Document name
    Document format
    Document size [MB]
    pdf
    1.95
    pdf
    22.47

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL GR
    399
    1176
    CBL GR
    1908
    2785
    CBL VDL CCL GR
    2686
    2721
    CPI
    3460
    3750
    DLL MSFL GR
    3450
    3675
    FDC CNL GR
    2784
    3760
    FDC GR
    399
    2800
    GEODIP
    3476
    3660
    HDT
    2784
    3760
    ISF SON
    171
    3760
    LCS SON
    2784
    3750
    MLL
    3475
    3760
    NGS
    3450
    3760
    TDT
    3475
    3758

  • Casing and leak–off tests
    Casing and leak–off tests
    Casing type
    Casing diam.
    [inch]
    Casing depth
    [m]
    Hole diam.
    [inch]
    Hole depth
    [m]
    LOT/FIT mud eqv.
    [g/cm3]
    Formation test type
    CONDUCTOR
    30
    171.0
    36
    171.0
    0.00
    SURF.COND.
    20
    399.0
    26
    415.0
    0.00
    INTERM.
    13 3/8
    1181.0
    17 1/2
    1195.0
    0.00
    INTERM.
    9 5/8
    2788.0
    12 1/4
    2819.0
    0.00
    LINER
    7
    3763.0
    8 1/2
    3764.0
    0.00

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    171
    0.00
    spud mud
    530
    1.09
    water based
    1573
    1.24
    water based
    2517
    1.24
    water based
    2819
    1.25
    water based
    3578
    1.35
    water based
    3693
    1.35
    water based
    3764
    1.25
    water based

  • Pressure plots
    Pressure plots
    The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.
    Pressure plots
    Document name
    Document format
    Document size [MB]
    pdf
    0.21