Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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25.11.2024 - 01:30
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6407/6-1

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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.
    6407/6-1
    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.
    NORWEGIAN SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    6407/6-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    line 627-423 & SP 337
    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.
    437-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.
    41
    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,
    16.09.1984
    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.
    26.10.1984
    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.
    26.10.1986
    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.
    13.12.2005
    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.
    DRY
    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.
    27.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    226.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2895.0
    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).
    2895.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    105
    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.
    LATE 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.
    RED BEDS (INFORMAL)
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    64° 38' 29.62'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 52' 31.53'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7169163.29
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    446258.70
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    32
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    444

  • Wellbore history
    General
    Well 6407/6-1 was the third well to be drilled on the TrØndelag Platform offshore Mid Norway. The primary objective of the well was to investigate the reservoir potential of Middle Jurassic Sandstones (Fangst Group). Secondary objectives of the well were the Early Jurassic Sandstone Hl-2 (Tilje and Åre Formations), and sandstones in the Triassic.
    Operations and results
    Wildcat well 6407/6-1 was spudded with the semi-submersible installation Zapata Ugland on 16 September 1984 and drilled to TD at 2895, 47 m into the Triassic Red Beds. In the 12 1/4" hole section the hole suddenly packed off at 1591, probably due to overpressured Early Eocene clays. The pipe was worked free and the mud weight increased. After that drilling proceeded without further difficulties. Logs were not run below 2869 m. The well was drilled with seawater/hi-vis slugs/gel down to 456 m, with gypsum/lignosulphonate mud from 456 m to TD. The well proved a good "upper sandstone member" (Garn Formation), and a "lower sandstone member" (Ile Formation). Sandstone sequences interbedded with siltstone, claystone, and coals were encountered also in the interval 2244 m to 2457 m, the Tilje Formation. Isolated weak shows were recorded on core no 1 in the lower part of the Garn Formation, otherwise no shows were observed in any part of the well. The RFT tool was run in the Middle Jurassic and four pressure points were obtained in good to very good permability sandstone in the Garn Formation. The average gradient was 1.00 g/cm, indicating the formation was water bearing. The electrical logs proved all reservoir sections in the well to be water bearing.
    Four cores were cut in the Middle Jurassic Sandstone over the interval from 1870 - 1888.2 m. No fluid samples were taken.
    The well was permanently abandoned on 26 October 1984 as a dry well.
    Testing
    No drill stem test was performed.

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    NO
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    320.00
    2892.00

  • 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
    1870.0
    1877.3
    [m ]
    2
    1877.3
    1886.4
    [m ]
    3
    1887.1
    1887.6
    [m ]
    4
    1887.7
    1888.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    17.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1870-1875m
    Core photo at depth: 1875-1877m
    Core photo at depth: 1877-1882m
    Core photo at depth: 1882-1886m
    Core photo at depth: 1887-1888m
    1870-1875m
    1875-1877m
    1877-1882m
    1882-1886m
    1887-1888m
    Core photo at depth: 1888-1889m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    1888-1889m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1500.0
    [m]
    DC
    STRAT
    1515.0
    [m]
    DC
    STRAT
    1530.0
    [m]
    DC
    STRAT
    1545.0
    [m]
    DC
    STRAT
    1560.0
    [m]
    DC
    STRAT
    1575.0
    [m]
    DC
    STRAT
    1590.0
    [m]
    DC
    STRAT
    1605.0
    [m]
    DC
    STRAT
    1620.0
    [m]
    DC
    STRAT
    1635.0
    [m]
    DC
    STRAT
    1650.0
    [m]
    DC
    STRAT
    1665.0
    [m]
    DC
    STRAT
    1680.0
    [m]
    DC
    STRAT
    1695.0
    [m]
    DC
    STRAT
    1710.0
    [m]
    DC
    STRAT
    1725.0
    [m]
    DC
    STRAT
    1731.0
    [m]
    DC
    STRAT
    1740.0
    [m]
    DC
    STRAT
    1745.5
    [m]
    SWC
    STRAT
    1750.4
    [m]
    SWC
    STRAT
    1755.0
    [m]
    SWC
    STRAT
    1760.0
    [m]
    SWC
    STRAT
    1770.0
    [m]
    SWC
    STRAT
    1780.0
    [m]
    SWC
    STRAT
    1790.0
    [m]
    SWC
    STRAT
    1800.0
    [m]
    SWC
    STRAT
    1810.0
    [m]
    SWC
    STRAT
    1815.0
    [m]
    SWC
    STRAT
    1817.2
    [m]
    SWC
    STRAT
    1819.4
    [m]
    SWC
    STRAT
    1824.5
    [m]
    SWC
    STRAT
    1831.7
    [m]
    SWC
    STRAT
    1833.5
    [m]
    SWC
    STRAT
    1834.2
    [m]
    SWC
    STRAT
    1834.9
    [m]
    SWC
    STRAT
    1836.3
    [m]
    SWC
    STRAT
    1837.7
    [m]
    SWC
    STRAT
    1842.0
    [m]
    SWC
    STRAT
    1845.9
    [m]
    SWC
    STRAT
    1849.5
    [m]
    SWC
    STRAT
    1850.7
    [m]
    SWC
    STRAT
    1854.3
    [m]
    SWC
    STRAT
    1855.5
    [m]
    SWC
    STRAT
    1858.0
    [m]
    SWC
    STRAT
    1861.0
    [m]
    SWC
    STRAT
    1864.0
    [m]
    SWC
    STRAT
    1867.0
    [m]
    SWC
    STRAT
    1870.3
    [m]
    C
    STRAT
    1871.6
    [m]
    C
    STRAT
    1874.9
    [m]
    C
    STRAT
    1875.2
    [m]
    C
    STRAT
    1876.2
    [m]
    C
    STRAT
    1876.5
    [m]
    C
    STRAT
    1879.1
    [m]
    C
    STRAT
    1880.5
    [m]
    C
    STRAT
    1881.6
    [m]
    C
    STRAT
    1882.5
    [m]
    C
    STRAT
    1887.3
    [m]
    C
    STRAT
    1887.9
    [m]
    C
    STRAT
    1890.0
    [m]
    DC
    STRAT
    1905.0
    [m]
    DC
    STRAT
    1923.0
    [m]
    DC
    STRAT
    1933.0
    [m]
    SWC
    STRAT
    1935.0
    [m]
    DC
    STRAT
    1948.0
    [m]
    SWC
    STRAT
    1986.0
    [m]
    DC
    STRAT
    1987.0
    [m]
    SWC
    STRAT
    1995.0
    [m]
    DC
    STRAT
    2002.0
    [m]
    SWC
    STRAT
    2010.0
    [m]
    DC
    STRAT
    2017.0
    [m]
    SWC
    STRAT
    2025.0
    [m]
    DC
    STRAT
    2039.0
    [m]
    SWC
    STRAT
    2040.0
    [m]
    DC
    STRAT
    2055.0
    [m]
    DC
    STRAT
    2070.0
    [m]
    DC
    STRAT
    2091.0
    [m]
    DC
    STRAT
    2091.5
    [m]
    SWC
    STRAT
    2103.0
    [m]
    DC
    STRAT
    2107.0
    [m]
    SWC
    STRAT
    2115.0
    [m]
    DC
    STRAT
    2126.0
    [m]
    SWC
    STRAT
    2130.0
    [m]
    DC
    STRAT
    2142.0
    [m]
    SWC
    STRAT
    2145.0
    [m]
    DC
    STRAT
    2160.0
    [m]
    DC
    STRAT
    2175.0
    [m]
    DC
    STRAT
    2190.0
    [m]
    DC
    STRAT
    2197.0
    [m]
    SWC
    STRAT
    2205.0
    [m]
    DC
    STRAT
    2220.0
    [m]
    DC
    STRAT
    2220.0
    [m]
    SWC
    STRAT
    2235.0
    [m]
    DC
    STRAT
    2242.0
    [m]
    SWC
    STRAT
    2250.0
    [m]
    DC
    STRAT
    2252.0
    [m]
    SWC
    STRAT
    2262.0
    [m]
    SWC
    STRAT
    2265.0
    [m]
    DC
    STRAT
    2276.0
    [m]
    SWC
    STRAT
    2280.0
    [m]
    DC
    STRAT
    2295.0
    [m]
    DC
    STRAT
    2298.0
    [m]
    SWC
    STRAT
    2307.0
    [m]
    DC
    STRAT
    2313.0
    [m]
    SWC
    STRAT
    2325.0
    [m]
    DC
    STRAT
    2340.0
    [m]
    DC
    STRAT
    2341.0
    [m]
    SWC
    STRAT
    2352.0
    [m]
    DC
    STRAT
    2377.0
    [m]
    SWC
    STRAT
    2388.0
    [m]
    DC
    STRAT
    2400.0
    [m]
    DC
    STRAT
    2415.0
    [m]
    DC
    STRAT
    2418.0
    [m]
    SWC
    STRAT
    2430.0
    [m]
    DC
    STRAT
    2445.0
    [m]
    DC
    STRAT
    2460.0
    [m]
    DC
    STRAT
    2471.5
    [m]
    SWC
    STRAT
    2475.0
    [m]
    DC
    STRAT
    2490.0
    [m]
    DC
    STRAT
    2505.0
    [m]
    DC
    STRAT
    2510.0
    [m]
    SWC
    STRAT
    2520.0
    [m]
    DC
    STRAT
    2535.0
    [m]
    DC
    STRAT
    2550.0
    [m]
    DC
    STRAT
    2562.0
    [m]
    SWC
    STRAT
    2564.0
    [m]
    DC
    STRAT
    2580.0
    [m]
    DC
    STRAT
    2591.0
    [m]
    SWC
    STRAT
    2595.0
    [m]
    DC
    STRAT
    2610.0
    [m]
    DC
    STRAT
    2611.0
    [m]
    SWC
    STRAT
    2625.0
    [m]
    DC
    STRAT
    2640.0
    [m]
    DC
    STRAT
    2653.5
    [m]
    SWC
    STRAT
    2655.0
    [m]
    DC
    STRAT
    2670.0
    [m]
    DC
    STRAT
    2678.5
    [m]
    SWC
    STRAT
    2685.0
    [m]
    DC
    STRAT
    2693.5
    [m]
    SWC
    STRAT
    2710.5
    [m]
    SWC
    STRAT
    2715.0
    [m]
    DC
    STRAT
    2730.0
    [m]
    DC
    STRAT
    2734.5
    [m]
    SWC
    STRAT
    2742.3
    [m]
    SWC
    STRAT
    2753.0
    [m]
    SWC
    STRAT
    2760.0
    [m]
    DC
    STRAT
    2775.0
    [m]
    SWC
    STRAT
    2788.0
    [m]
    SWC
    STRAT
    2790.0
    [m]
    DC
    STRAT
    2805.0
    [m]
    DC
    STRAT
    2807.0
    [m]
    SWC
    STRAT
    2817.5
    [m]
    SWC
    STRAT
    2820.0
    [m]
    DC
    STRAT
    2849.0
    [m]
    SWC
    STRAT
    2850.0
    [m]
    DC
    STRAT
    2857.0
    [m]
    SWC
    STRAT
    2865.0
    [m]
    DC
    STRAT
    2880.0
    [m]
    DC
    STRAT
    2892.0
    [m]
    DC
    STRAT

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.59

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.38
    pdf
    1.29
    pdf
    6.08

  • 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
    18.37

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL CCL GR
    253
    1333
    CBL VDL CCL GR
    253
    1872
    CST
    1745
    1836
    CST
    1836
    1870
    CST
    1900
    2341
    CST
    2356
    2859
    ISF BHC MSFL SP NGT
    1872
    2867
    ISF LSS MSFL SP GR
    253
    1887
    ISF LSS MSFL SP NGT
    2801
    2867
    LDL CNL GR
    456
    2863
    LDL GR
    313
    458
    LDL GR
    313
    458
    MWD - GR RES DIR
    253
    1870
    NGT
    1872
    2867
    NGT
    2801
    2864
    RFT GR
    1858
    1872
    SHDT GR
    1570
    2864
    VSP
    1063
    2863

  • 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
    314.0
    36
    316.0
    0.00
    LOT
    SURF.COND.
    20
    456.0
    26
    463.0
    1.30
    LOT
    INTERM.
    13 3/8
    1334.0
    17 1/2
    1349.0
    1.75
    LOT
    INTERM.
    9 5/8
    1873.0
    12 1/4
    1888.0
    1.68
    LOT
    OPEN HOLE
    2895.0
    8 1/2
    2895.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    954
    1.14
    WATER BASED
    27.09.1984
    1233
    1.25
    13.0
    8.0
    WATER BASED
    28.09.1984
    1347
    1.28
    19.0
    8.0
    WATER BASED
    01.10.1984
    1352
    1.34
    28.0
    8.0
    WATER BASED
    04.10.1984
    1600
    1.43
    24.0
    6.0
    WATER BASED
    04.10.1984
    1872
    1.43
    21.0
    6.7
    WATER BASED
    15.10.1984
    1880
    1.10
    11.0
    5.0
    WATER BASED
    15.10.1984
    2895
    1.10
    18.0
    5.8
    WATER BASED
    19.10.1984

  • 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
    0.27