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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6406/12-2

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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.
    6406/12-2
    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).
    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.
    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.
    6406/12-2
    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.
    824-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.
    47
    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,
    01.09.1995
    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.
    17.10.1995
    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.
    17.10.1997
    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.
    24.09.2003
    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.
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    334.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4367.0
    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).
    4363.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    5.9
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    146
    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.
    MIDDLE JURASSIC
    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.
    MELKE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    64° 6' 13.08'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    6° 51' 43.06'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7110486.95
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    395821.02
    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.
    2640

  • Wellbore history
    General
    Well 6406/12-2 is located approximately mid way between the Njord Field and the small 6406/11-1 S oil discovery. The main objective of the well was to prove oil accumulation in Upper Jurassic Sandstones in the Lambda prospect.
    Operations and results
    Exploration well 6406/12-2 was spudded with the semi-submersible installation "Deepsea Bergen" on 1 September 1995 and drilled to a total depth of 4367 m in Middle Jurassic Melke Formation sandstones. The well was drilled with Bentonite / CMC EHV down to 917 m, with "ANCO 2000" mud from 917 m to 2316 m, and with oil based "ANCOVERT" from 2316 m to TD.
    Drilling performance was good down to 3731 m but very low penetration rate was experienced below this level to TD due to very hard formation.
    Three cores were cut, one in Spekk Formation (shale), one in Rogn Formation II and one in Melke Formation. One FMT run was performed in the Rogn and Melke sandstone sections. The FMT log was run with sample chambers to collect a sample of the formation fluid if possible. All the pressure points showed tight formation. The well was permanently abandoned on 17 October 1995 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?
    YES
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    930.00
    4367.00

  • 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
    3731.0
    3758.4
    [m ]
    2
    3797.0
    3823.7
    [m ]
    3
    3999.0
    4006.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    61.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 3731-3736m
    Core photo at depth: 3736-3741m
    Core photo at depth: 3741-3746m
    Core photo at depth: 3746-3751m
    Core photo at depth: 3751-3756m
    3731-3736m
    3736-3741m
    3741-3746m
    3746-3751m
    3751-3756m
    Core photo at depth: 3756-3758m
    Core photo at depth: 3797-3802m
    Core photo at depth: 3802-3807m
    Core photo at depth: 3807-3812m
    Core photo at depth: 3812-3817m
    3756-3758m
    3797-3802m
    3802-3807m
    3807-3812m
    3812-3817m
    Core photo at depth: 3817-3822m
    Core photo at depth: 3822-3823m
    Core photo at depth: 3999-4004m
    Core photo at depth: 4004-4006m
    Core photo at depth:  
    3817-3822m
    3822-3823m
    3999-4004m
    4004-4006m

  • 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
    418.0
    36
    418.0
    0.00
    LOT
    SURF.COND.
    20
    906.0
    26
    907.0
    1.65
    LOT
    INTERM.
    9 5/8
    2308.0
    12 1/4
    2308.0
    2.02
    LOT
    OPEN HOLE
    4367.0
    8 1/2
    4367.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    DIFL AC ZDL GR
    906
    2309
    DIPL MAC ZDL CN GR CHT
    2257
    4370
    FMT-QD GR CHT
    3798
    4307
    HEXDIP GR CHT
    3650
    4372
    MWD DPR - TF4
    3660
    3727
    MWD DPR - TF5A
    2301
    3312
    MWD DPR - TF5A
    3722
    4350
    MWD RGD
    415
    2316
    SWC
    2350
    4298
    VSP
    640
    4360

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.62

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.93
    pdf
    1.92
    pdf
    1.91
    pdf
    0.19

  • 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
    27.76

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    422
    1.03
    SEAWATER/BENT.
    2000
    1.55
    25.0
    ANCO 2000
    2300
    1.55
    26.0
    ANCO 2000
    2656
    1.60
    42.0
    ANCO VERT
    3240
    1.70
    42.0
    ANCO VERT
    3672
    1.70
    46.0
    ANCO VERT
    3731
    1.70
    46.0
    ANCO VERT
    3758
    1.70
    DUMMY
    3797
    1.70
    45.0
    ANCO VERT
    3897
    1.70
    DUMMY

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1600.0
    [m]
    DC
    UOS
    1620.0
    [m]
    DC
    UOS
    1640.0
    [m]
    DC
    UOS
    1660.0
    [m]
    DC
    UOS
    1680.0
    [m]
    DC
    UOS
    1700.0
    [m]
    DC
    UOS
    1720.0
    [m]
    DC
    UOS
    1740.0
    [m]
    DC
    UOS
    1760.0
    [m]
    DC
    UOS
    1780.0
    [m]
    DC
    UOS
    1800.0
    [m]
    DC
    UOS
    1820.0
    [m]
    DC
    UOS
    1830.0
    [m]
    DC
    UOS
    1850.0
    [m]
    DC
    UOS
    1870.0
    [m]
    DC
    UOS
    1890.0
    [m]
    DC
    UOS
    2170.0
    [m]
    DC
    UOS
    2190.0
    [m]
    DC
    UOS
    2210.0
    [m]
    DC
    UOS
    2230.0
    [m]
    DC
    UOS
    2250.0
    [m]
    DC
    UOS
    2270.0
    [m]
    DC
    UOS
    2290.0
    [m]
    DC
    UOS
    2310.0
    [m]
    DC
    UOS
    2340.0
    [m]
    DC
    UOS
    2350.0
    [m]
    SWC
    WESTL
    2360.0
    [m]
    DC
    UOS
    2370.0
    [m]
    DC
    UOS
    2390.0
    [m]
    DC
    UOS
    2410.0
    [m]
    DC
    UOS
    2430.0
    [m]
    DC
    UOS
    2450.0
    [m]
    DC
    UOS
    2470.0
    [m]
    DC
    UOS
    2480.0
    [m]
    SWC
    WESTL
    2490.0
    [m]
    DC
    UOS
    2510.0
    [m]
    DC
    UOS
    2530.0
    [m]
    DC
    UOS
    2550.0
    [m]
    DC
    UOS
    2570.0
    [m]
    DC
    UOS
    2580.0
    [m]
    DC
    UOS
    2600.0
    [m]
    DC
    UOS
    2620.0
    [m]
    DC
    UOS
    2640.0
    [m]
    DC
    UOS
    2660.0
    [m]
    DC
    UOS
    2680.0
    [m]
    DC
    UOS
    2690.0
    [m]
    DC
    UOS
    2710.0
    [m]
    DC
    UOS
    2730.0
    [m]
    DC
    UOS
    2750.0
    [m]
    DC
    UOS
    2770.0
    [m]
    DC
    UOS
    2790.0
    [m]
    DC
    UOS
    2810.0
    [m]
    DC
    UOS
    2830.0
    [m]
    DC
    UOS
    2850.0
    [m]
    DC
    UOS
    2870.0
    [m]
    DC
    UOS
    2890.0
    [m]
    DC
    UOS
    2910.0
    [m]
    DC
    UOS
    2930.0
    [m]
    DC
    UOS
    2950.0
    [m]
    DC
    UOS
    2970.0
    [m]
    DC
    UOS
    2990.0
    [m]
    DC
    UOS
    3010.0
    [m]
    DC
    UOS
    3030.0
    [m]
    DC
    UOS
    3050.0
    [m]
    DC
    UOS
    3070.0
    [m]
    DC
    UOS
    3090.0
    [m]
    DC
    UOS
    3110.0
    [m]
    DC
    UOS
    3140.0
    [m]
    DC
    UOS
    3160.0
    [m]
    DC
    UOS
    3180.0
    [m]
    DC
    UOS
    3200.0
    [m]
    DC
    UOS
    3220.0
    [m]
    DC
    UOS
    3240.0
    [m]
    DC
    UOS
    3260.0
    [m]
    DC
    UOS
    3280.0
    [m]
    DC
    UOS
    3300.0
    [m]
    SWC
    WESTL
    3300.0
    [m]
    DC
    UOS
    3320.0
    [m]
    DC
    UOS
    3340.0
    [m]
    DC
    UOS
    3360.0
    [m]
    DC
    UOS
    3380.0
    [m]
    DC
    UOS
    3400.0
    [m]
    DC
    UOS
    3405.0
    [m]
    SWC
    WESTL
    3420.0
    [m]
    DC
    UOS
    3440.0
    [m]
    DC
    UOS
    3460.0
    [m]
    DC
    UOS
    3480.0
    [m]
    DC
    UOS
    3520.0
    [m]
    DC
    UOS
    3540.0
    [m]
    DC
    UOS
    3560.0
    [m]
    DC
    UOS
    3568.0
    [m]
    SWC
    WESTL
    3580.0
    [m]
    DC
    UOS
    3600.0
    [m]
    DC
    UOS
    3620.0
    [m]
    DC
    UOS
    3635.0
    [m]
    SWC
    WESTL
    3640.0
    [m]
    DC
    UOS
    3650.0
    [m]
    DC
    UOS
    3670.0
    [m]
    DC
    UOS
    3680.0
    [m]
    DC
    UOS
    3690.0
    [m]
    DC
    UOS
    3700.0
    [m]
    DC
    UOS
    3703.0
    [m]
    DC
    UOS
    3709.0
    [m]
    DC
    UOS
    3715.0
    [m]
    SWC
    WESTL
    3721.0
    [m]
    SWC
    WESTL
    3731.5
    [m]
    C
    WESTL
    3733.6
    [m]
    C
    WESTL
    3736.6
    [m]
    C
    WESTL
    3739.9
    [m]
    C
    WESTL
    3743.9
    [m]
    C
    WESTL
    3747.5
    [m]
    C
    WESTL
    3751.6
    [m]
    C
    WESTL
    3755.7
    [m]
    C
    WESTL
    3775.0
    [m]
    SWC
    WESTL
    3785.0
    [m]
    SWC
    WESTL
    3798.1
    [m]
    C
    WESTL
    3802.8
    [m]
    C
    WESTL
    3806.3
    [m]
    C
    WESTL
    3810.4
    [m]
    C
    WESTL
    3813.2
    [m]
    C
    WESTL
    3815.5
    [m]
    C
    WESTL
    3818.7
    [m]
    C
    WESTL
    3870.0
    [m]
    SWC
    WESTL
    3909.1
    [m]
    C
    WESTL
    3937.0
    [m]
    SWC
    WESTL
    3950.0
    [m]
    SWC
    WESTL
    3957.0
    [m]
    SWC
    WESTL
    3990.0
    [m]
    SWC
    WESTL
    4002.0
    [m]
    C
    WESTL
    4006.2
    [m]
    C
    WESTL
    4045.0
    [m]
    SWC
    WESTL
    4066.0
    [m]
    DC
    UOS
    4078.0
    [m]
    DC
    UOS
    4090.0
    [m]
    DC
    UOS
    4102.0
    [m]
    DC
    UOS
    4111.0
    [m]
    DC
    UOS
    4123.0
    [m]
    DC
    UOS
    4132.0
    [m]
    DC
    UOS
    4141.0
    [m]
    DC
    UOS
    4153.0
    [m]
    DC
    UOS
    4162.0
    [m]
    DC
    UOS
    4174.0
    [m]
    DC
    UOS
    4189.0
    [m]
    DC
    UOS
    4204.0
    [m]
    DC
    UOS
    4216.0
    [m]
    DC
    UOS
    4233.0
    [m]
    SWC
    WESTL
    4234.0
    [m]
    DC
    UOS
    4252.0
    [m]
    DC
    UOS
    4264.0
    [m]
    DC
    UOS
    4298.0
    [m]
    SWC
    WESTL
    4321.0
    [m]
    DC
    UOS
    4339.0
    [m]
    DC
    UOS
    4357.0
    [m]
    DC
    UOS
    4367.0
    [m]
    DC
    UOS