Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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29.04.2024 - 01:33
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24/12-3 S

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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.
    24/12-3 S
    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
    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
    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.
    24/12-3
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    WEST 2412SC-INLINE 2781 & CROSSLINE 1594
    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.
    847-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.
    33
    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,
    27.06.1996
    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.
    29.07.1996
    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.
    29.07.1998
    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.
    29.05.2002
    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.
    OIL
    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.
    YES
    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.
    PALEOCENE
    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.
    HEIMDAL 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.
    118.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3058.0
    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).
    2726.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    36.2
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    90
    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.
    PALEOCENE
    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.
    VÅLE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    59° 5' 57.53'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 47' 23.33'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6551890.29
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    430671.31
    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.
    2823

  • Wellbore history
    General
    The main objective for the well was to test the hydrocarbon potential in the Paleocene Heimdal Formation on the A-Heimdal Prospect.
    Operations and results
    Well 24/12-3S was spudded on 27 June 1996 with the semi submersible drilling rig "Deepsea Trym" and reached TD at 3058 m (2751 m TVD RKB) in the Paleocene Våle Formation on 23 July 1996. The well was drilled water based with bentonite spud mud down to 1130 m and with ANCO 2000 mud from 1130 to TD. Geochemical analyses indicated that the water based mud contained traces of oil, which did not originate from the reservoired oil in the well.

    The well proved 2.8m TVD of hydrocarbons in the top of the Heimdal Formation. This has been deducted from FMT sampling and petrophysical evaluation of wire line logs. The well was not tested due to the limited oil column present at the well location. One core was cut in the interval 2396 - 2408 m in the Heimdal Formation. An FMT segregated sample containing gas, oil, and mud filtrate was taken at 2398.4 m.

    The well was permanently plugged and abandoned as an oil discovery
    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]
    1140.00
    3057.00

  • 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
    2396.0
    2406.3
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    10.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2396-2401m
    Core photo at depth: 2401-2406m
    Core photo at depth: 2406-2407m
    Core photo at depth:  
    Core photo at depth:  
    2396-2401m
    2401-2406m
    2406-2407m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1340.0
    [m]
    DC
    UOS
    1360.0
    [m]
    DC
    UOS
    1380.0
    [m]
    DC
    UOS
    1410.0
    [m]
    DC
    UOS
    1420.0
    [m]
    DC
    UOS
    1430.0
    [m]
    DC
    UOS
    1450.0
    [m]
    DC
    UOS
    1470.0
    [m]
    DC
    UOS
    1480.0
    [m]
    DC
    UOS
    1500.0
    [m]
    DC
    UOS
    1510.0
    [m]
    DC
    UOS
    1530.0
    [m]
    DC
    UOS
    1540.0
    [m]
    DC
    UOS
    1560.0
    [m]
    DC
    UOS
    1570.0
    [m]
    DC
    UOS
    1590.0
    [m]
    DC
    UOS
    1600.0
    [m]
    DC
    UOS
    1620.0
    [m]
    DC
    UOS
    1630.0
    [m]
    DC
    UOS
    1640.0
    [m]
    DC
    UOS
    1650.0
    [m]
    DC
    UOS
    1670.0
    [m]
    DC
    UOS
    1680.0
    [m]
    DC
    UOS
    1700.0
    [m]
    DC
    UOS
    1710.0
    [m]
    DC
    UOS
    1730.0
    [m]
    DC
    UOS
    1740.0
    [m]
    DC
    UOS
    1760.0
    [m]
    DC
    UOS
    1770.0
    [m]
    DC
    UOS
    1790.0
    [m]
    DC
    UOS
    1800.0
    [m]
    DC
    UOS
    1820.0
    [m]
    DC
    UOS
    1830.0
    [m]
    DC
    UOS
    1850.0
    [m]
    DC
    UOS
    1860.0
    [m]
    DC
    UOS
    1880.0
    [m]
    DC
    UOS
    1890.0
    [m]
    DC
    UOS
    1900.0
    [m]
    DC
    UOS
    1920.0
    [m]
    DC
    UOS
    1940.0
    [m]
    DC
    UOS
    1950.0
    [m]
    DC
    UOS
    1970.0
    [m]
    DC
    UOS
    1980.0
    [m]
    DC
    UOS
    2000.0
    [m]
    DC
    UOS
    2015.0
    [m]
    DC
    UOS
    2030.0
    [m]
    DC
    UOS
    2039.0
    [m]
    DC
    UOS
    2051.0
    [m]
    DC
    UOS
    2060.0
    [m]
    DC
    UOS
    2069.0
    [m]
    DC
    UOS
    2081.0
    [m]
    DC
    UOS
    2090.0
    [m]
    DC
    UOS
    2099.0
    [m]
    DC
    UOS
    2111.0
    [m]
    DC
    UOS
    2120.0
    [m]
    DC
    UOS
    2129.0
    [m]
    DC
    UOS
    2141.0
    [m]
    DC
    UOS
    2150.0
    [m]
    DC
    UOS
    2159.0
    [m]
    DC
    UOS
    2171.0
    [m]
    DC
    UOS
    2180.0
    [m]
    DC
    UOS
    2189.0
    [m]
    DC
    UOS
    2210.0
    [m]
    DC
    UOS
    2219.0
    [m]
    DC
    UOS
    2231.0
    [m]
    DC
    UOS
    2240.0
    [m]
    DC
    UOS
    2249.0
    [m]
    DC
    UOS
    2261.0
    [m]
    DC
    UOS
    2270.0
    [m]
    DC
    UOS
    2279.0
    [m]
    DC
    UOS
    2291.0
    [m]
    DC
    UOS
    2300.0
    [m]
    DC
    UOS
    2309.0
    [m]
    DC
    UOS
    2321.0
    [m]
    DC
    UOS
    2330.0
    [m]
    DC
    UOS
    2339.0
    [m]
    DC
    UOS
    2351.0
    [m]
    DC
    UOS
    2360.0
    [m]
    DC
    UOS
    2420.0
    [m]
    DC
    UOS
    2429.0
    [m]
    DC
    UOS
    2444.0
    [m]
    DC
    UOS
    2450.0
    [m]
    DC
    UOS
    2456.0
    [m]
    DC
    UOS
    2465.0
    [m]
    DC
    UOS
    2480.0
    [m]
    DC
    UOS
    2492.0
    [m]
    DC
    UOS
    2510.0
    [m]
    DC
    UOS
    2519.0
    [m]
    DC
    UOS
    2531.0
    [m]
    DC
    UOS
    2540.0
    [m]
    DC
    UOS
    2550.0
    [m]
    DC
    UOS
    2562.0
    [m]
    DC
    UOS
    2586.0
    [m]
    DC
    UOS
    2616.0
    [m]
    DC
    UOS
    2625.0
    [m]
    DC
    UOS
    2640.0
    [m]
    DC
    UOS
    2661.0
    [m]
    DC
    UOS
    2673.0
    [m]
    DC
    UOS
    2685.0
    [m]
    DC
    UOS
    2727.0
    [m]
    DC
    UOS
    2739.0
    [m]
    DC
    UOS
    2748.0
    [m]
    DC
    UOS
    2769.0
    [m]
    DC
    UOS
    2778.0
    [m]
    DC
    UOS
    2787.0
    [m]
    DC
    UOS
    2802.0
    [m]
    DC
    UOS
    2811.0
    [m]
    DC
    UOS
    2820.0
    [m]
    DC
    UOS
    2841.0
    [m]
    DC
    UOS
    2862.0
    [m]
    DC
    UOS
    2871.0
    [m]
    DC
    UOS
    2880.0
    [m]
    DC
    UOS
    2889.0
    [m]
    DC
    UOS
    2901.0
    [m]
    DC
    UOS
    2910.0
    [m]
    DC
    UOS
    2928.0
    [m]
    DC
    UOS
    2937.0
    [m]
    DC
    UOS
    2949.0
    [m]
    DC
    UOS
    2961.0
    [m]
    DC
    UOS
    2970.0
    [m]
    DC
    UOS
    2979.0
    [m]
    DC
    UOS
    2981.0
    [m]
    DC
    UOS
    3000.0
    [m]
    DC
    UOS
    3018.0
    [m]
    DC
    UOS
    3027.0
    [m]
    DC
    UOS
    3042.0
    [m]
    DC
    UOS
    3051.0
    [m]
    DC
    UOS
    3057.0
    [m]
    DC
    UOS

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    143
    435
    994
    1373
    1648
    2260
    2260
    2325
    2379
    2398
    2831
    2915

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.39

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.63
    pdf
    0.86

  • 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
    16.77

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    DIP GR
    2342
    3000
    DLL MAC ZDL GR
    1124
    2275
    DLL MLL MAC DSL
    2362
    3059
    FMT QDYNE GR
    2381
    2749
    MAC GR
    2225
    2447
    MWD
    203
    2976
    SWC GR
    2369
    3034
    VSP GR
    2225
    2447
    ZDL CN GR
    2362
    3048

  • 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
    203.0
    36
    204.0
    0.00
    LOT
    INTERM.
    13 3/8
    1125.0
    17 1/2
    1126.0
    1.73
    LOT
    INTERM.
    9 5/8
    2362.0
    12 1/4
    2367.0
    1.75
    LOT
    OPEN HOLE
    3058.0
    8 1/2
    3058.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1470
    1.39
    18.0
    ANCO 2000
    1946
    1.39
    18.0
    ANCO 2000
    2230
    1.39
    18.0
    ANCO 2000
    2367
    1.39
    21.0
    ANCO 2000
    2396
    1.20
    15.0
    ANCO 2000
    2408
    1.20
    DUMMY
    2457
    1.20
    DUMMY
    2692
    1.20
    14.0
    ANCO 2000
    2929
    1.20
    15.0
    ANCO 2000
    2955
    1.20
    14.0
    ANCO 2000
    3058
    1.20
    15.0
    ANCO 2000

  • 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
    0.23