Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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31.10.2024 - 01:27
Time of last synchronization with Norwegian Offshore Directorate's internal systems

15/9-18

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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.
    15/9-18
    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).
    WILDCAT
    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
    Multilateral
    Indicator telling if the parent well is multilateral, meaning it has more than one branch radiating from the main borehole. Example of legal values: YES, NO. See also Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    NO
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    15/9-18
    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.
    396-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.
    78
    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,
    16.12.1983
    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.
    02.03.1984
    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.
    02.03.1986
    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.
    10.01.2010
    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
    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.
    SHOWS
    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
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    97.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3622.0
    Final vertical depth (TVD) [m RKB]
    Vertical elevation from total depth to kelly bushing. Shown only for released wells. Referred to as true vertical depth (TVD).
    3621.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.15
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    104
    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.
    SMITH BANK FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    58° 21' 1.95'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 48' 12.27'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6468508.49
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    429961.76
    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.
    36

  • Wellbore history
    General
    Well 15/9-18 is located between the Sleipner Øst and Sleipner Vest Fields in the South Viking Graben in the North Sea.
    It was designed primarily to test hydrocarbon accumulations in the Middle Jurassic Hugin Formation. Secondary objectives were Paleocene sandstones in the Heimdal and Sleipner Formations, and sandstones of Triassic age.
    Operations and results
    Wildcat well 15/9-18 was spudded with the semi-submersible installation Deepsea Bergen on 16 December 1983 and drilled to TD at 3622 m in the Triassic Smith Bank Fm. No major problems occurred while drilling this well, but some tight hole problems were experienced in the 12 1/4" hole section. The well was drilled with seawater gel down to 520 m and with gypsum/lignosulphonate mud from 520 m to TD.
    Tertiary sands were penetrated at 866 m (Utsira Formation), 1254 m, and at 2071 m ("Frigg Fm Equivalent"). The Draupne Formation was encountered 105 m thick at 3108 m. The Hugin Formation was encountered at 3237 m. It was found hydrocarbon bearing in a 7.5 m interval from 3237.5 m and down to a coal layer at 3245.0 m but the hydrocarbons were immovable. The well did not encounter other hydrocarbon bearing intervals. Shows were however recorded further down in the Hugin Formation in the interval 3275 m to 3325 m.
    Four cores were cut, two in the Paleocene and two in the Middle Jurassic sequence. Segregated FMT fluid samples were taken in the hydrocarbon bearing interval in the Hugin Formation at 3238.3 m, 3239 m, and 3240 m. All samples were reported to recover mud filtrate only, but the samples from 3240 m were analysed to contain 0.2 g petroleum hydrocarbons.
    The well was permanently abandoned on 2 March 1984 as a dry well with shows.
    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]
    190.00
    3622.50

  • 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
    2630.0
    2632.2
    [m ]
    2
    2632.5
    2645.9
    [m ]
    3
    3230.0
    3248.4
    [m ]
    4
    3248.0
    3266.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    52.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2630-2632m
    Core photo at depth: 2632-2637m
    Core photo at depth: 2637-2642m
    Core photo at depth: 2642-2645m
    Core photo at depth: 3230-3236m
    2630-2632m
    2632-2637m
    2637-2642m
    2642-2645m
    3230-3236m
    Core photo at depth: 3236-3242m
    Core photo at depth: 3242-3248m
    Core photo at depth: 3248-3249m
    Core photo at depth: 3248-3254m
    Core photo at depth: 3254-3260m
    3236-3242m
    3242-3248m
    3248-3249m
    3248-3254m
    3254-3260m
    Core photo at depth: 3260-3266m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    3260-3266m

  • 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
    181.0
    36
    182.0
    0.00
    LOT
    SURF.COND.
    20
    499.0
    26
    520.0
    1.47
    LOT
    INTERM.
    13 3/8
    1150.0
    17 1/2
    1170.0
    1.52
    LOT
    INTERM.
    9 5/8
    2743.0
    12 1/4
    2762.0
    1.74
    LOT
    OPEN HOLE
    3622.0
    8 1/2
    3622.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CAL
    1500
    2743
    CBL VDL GR
    120
    2740
    CBL VDL GR
    200
    1150
    CDL CNL GR CAL
    1150
    3622
    CDL GR CAL
    499
    1170
    DIFL BHC AC
    120
    520
    DLL MLL GR
    3200
    3300
    FMT
    3238
    3571
    GR SP CAL
    499
    3623
    HR DIP
    2275
    2762
    HR DIP
    2742
    3623
    VELOCITY
    750
    3620

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.06
    pdf
    0.74
    pdf
    0.96

  • 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
    0.07
    pdf
    1.84
    pdf
    20.20
    pdf
    1.63
    pdf
    0.71
    pdf
    0.52
    pdf
    0.53
    pdf
    0.54
    pdf
    0.53
    pdf
    0.29
    pdf
    0.28
    pdf
    0.19
    pdf
    0.81
    pdf
    0.82
    pdf
    1.81
    pdf
    2.22
    pdf
    2.45
    pdf
    0.80
    pdf
    0.66
    pdf
    0.81
    pdf
    0.62
    pdf
    0.19
    pdf
    30.93
    pdf
    0.16
    pdf
    14.87
    pdf
    2.38
    pdf
    2.12
    pdf
    2.17
    pdf
    0.19
    pdf
    0.92
    pdf
    2.51
    pdf
    0.85
    pdf
    1.14
    pdf
    0.65
    pdf
    1.71
    pdf
    1.71
    pdf
    1.04
    pdf
    0.98
    pdf
    1.78
    pdf
    1.63
    pdf
    2.34
    pdf
    1.55
    pdf
    3.07
    pdf
    3.92

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    180
    1.04
    100.0
    WATER BASED
    330
    1.08
    38.0
    WATER BASED
    610
    1.10
    45.0
    WATER BASED
    705
    1.14
    49.0
    WATER BASED
    815
    1.13
    52.0
    WATER BASED
    1145
    1.12
    52.0
    WATER BASED
    1175
    1.13
    44.0
    WATER BASED
    1780
    1.17
    53.0
    WATER BASED
    1890
    1.20
    53.0
    WATER BASED
    2090
    1.23
    46.0
    WATER BASED
    2800
    1.24
    46.0
    WATER BASED
    3040
    1.35
    53.0
    WATER BASED
    3095
    1.39
    55.0
    WATER BASED
    3145
    1.42
    54.0
    WATER BASED

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2202.5
    [m]
    C
    2232.5
    [m]
    C
    2262.5
    [m]
    C
    2292.5
    [m]
    C
    2322.5
    [m]
    C
    2352.5
    [m]
    C
    2382.5
    [m]
    C
    2412.5
    [m]
    C
    2442.5
    [m]
    C
    2472.5
    [m]
    C
    2502.5
    [m]
    C
    2532.5
    [m]
    C
    2562.5
    [m]
    C
    2592.5
    [m]
    C
    2622.5
    [m]
    C
    2631.7
    [m]
    C
    OD
    2642.3
    [m]
    C
    OD
    2652.5
    [m]
    C
    2682.5
    [m]
    C
    2712.5
    [m]
    C
    2742.5
    [m]
    C
    2750.0
    [m]
    C
    2947.0
    [m]
    SWC
    RRI
    3220.0
    [m]
    DC
    OD
    3230.1
    [m]
    C
    OD
    3232.6
    [m]
    C
    OD
    3234.5
    [m]
    C
    OD
    3235.2
    [m]
    C
    OD
    3238.5
    [m]
    C
    OD
    3242.1
    [m]
    C
    OD
    3242.8
    [m]
    C
    OD
    3243.1
    [m]
    C
    OD
    3245.2
    [m]
    C
    OD
    3248.2
    [m]
    C
    OD
    3248.7
    [m]
    C
    OD
    3249.9
    [m]
    C
    OD
    3254.9
    [m]
    C
    OD
    3260.0
    [m]
    C
    OD
    3266.4
    [m]
    C
    OD
    3269.0
    [m]
    SWC
    RRI
    3298.0
    [m]
    SWC
    RRI
    3300.0
    [m]
    DC
    OD
    3313.0
    [m]
    SWC
    RRI
    3325.0
    [m]
    DC
    OD
    3329.0
    [m]
    SWC
    RRI
    3350.0
    [m]
    DC
    OD
    3367.0
    [m]
    SWC
    RRI
    3372.0
    [m]
    DC
    OD
    3400.0
    [m]
    DC
    OD
    3409.0
    [m]
    SWC
    RRI
    3420.0
    [m]
    SWC
    RRI
    3420.0
    [m]
    DC
    OD
    3440.0
    [m]
    DC
    OD
    3465.0
    [m]
    SWC
    RRI
    3584.5
    [m]
    SWC
    RRI