Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.11.2024 - 09:09
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31/4-A-4

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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.
    31/4-A-4
    Type
    Wellbore type. Legal values: EXPLORATION, DEVELOPMENT, OTHER (see 'Purpose' for more information)
    DEVELOPMENT
    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).
    OBSERVATION
    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.
    PLUGGED
    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
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    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.
    31/4-A-4
    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.
    Norsk Hydro Produksjon AS
    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.
    755-P
    Drilling facility
    Norwegian Offshore Directorate's name of the facility which the wellbore was drilled from.
    Production facility
    The Norwegian Offshore Directorate's name for the production facility, for development wells.
    BRAGE
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    105
    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,
    20.11.1992
    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.
    04.03.1993
    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.
    04.03.1995
    Plugged date
    Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).
    04.03.1993
    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.
    OBSERVATION
    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.
    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.
    EARLY JURASSIC
    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.
    137.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3975.0
    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).
    2482.0
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 32' 33.22'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 2' 50.29'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6711996.52
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    502595.25
    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.
    1903
  • 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
    3478.0
    3483.8
    [m ]
    2
    3484.0
    3503.4
    [m ]
    3
    3503.5
    3527.0
    [m ]
    5
    3546.0
    3570.0
    [m ]
    6
    3570.2
    3597.9
    [m ]
    7
    3671.5
    3678.3
    [m ]
    8
    3680.5
    3709.5
    [m ]
    9
    3709.5
    3750.8
    [m ]
    10
    3750.8
    3785.6
    [m ]
    11
    3785.6
    3832.2
    [m ]
    12
    3832.2
    3855.7
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    282.4
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES
  • Core photos

    Core photos
    Core photo at depth: 3478-3483m
    Core photo at depth: 3483-3484m
    Core photo at depth: 3484-3489m
    Core photo at depth: 3489-3494m
    Core photo at depth: 3494-3499m
    3478-3483m
    3483-3484m
    3484-3489m
    3489-3494m
    3494-3499m
    Core photo at depth: 3499-3503m
    Core photo at depth: 3503-3508m
    Core photo at depth: 3508-3513m
    Core photo at depth: 3513-3518m
    Core photo at depth: 3518-3523m
    3499-3503m
    3503-3508m
    3508-3513m
    3513-3518m
    3518-3523m
    Core photo at depth: 3523-3528m
    Core photo at depth: 3543-3548m
    Core photo at depth: 3548-3553m
    Core photo at depth: 3553-3558m
    Core photo at depth: 3558-3563m
    3523-3528m
    3543-3548m
    3548-3553m
    3553-3558m
    3558-3563m
    Core photo at depth: 3563-3568m
    Core photo at depth: 3568-3570m
    Core photo at depth: 3570-3575m
    Core photo at depth: 3575-3580m
    Core photo at depth: 3580-3585m
    3563-3568m
    3568-3570m
    3570-3575m
    3575-3580m
    3580-3585m
    Core photo at depth: 3585-3590m
    Core photo at depth: 3590-3595m
    Core photo at depth: 3595-3598m
    Core photo at depth: 3671-3676m
    Core photo at depth: 3676-3679m
    3585-3590m
    3590-3595m
    3595-3598m
    3671-3676m
    3676-3679m
    Core photo at depth: 3680-3685m
    Core photo at depth: 3685-3690m
    Core photo at depth: 3690-3695m
    Core photo at depth: 3695-3700m
    Core photo at depth: 3700-3705m
    3680-3685m
    3685-3690m
    3690-3695m
    3695-3700m
    3700-3705m
    Core photo at depth: 3705-3709m
    Core photo at depth: 3709-3714m
    Core photo at depth: 3714-3719m
    Core photo at depth: 3719-3724m
    Core photo at depth: 3724-3729m
    3705-3709m
    3709-3714m
    3714-3719m
    3719-3724m
    3724-3729m
    Core photo at depth: 3729-3734m
    Core photo at depth: 3734-3739m
    Core photo at depth: 3739-3744m
    Core photo at depth: 3744-3749m
    Core photo at depth: 3749-3751m
    3729-3734m
    3734-3739m
    3739-3744m
    3744-3749m
    3749-3751m
    Core photo at depth: 3751-3755m
    Core photo at depth: 3755-3760m
    Core photo at depth: 3760-3765m
    Core photo at depth: 3765-3770m
    Core photo at depth: 3770-3775m
    3751-3755m
    3755-3760m
    3760-3765m
    3765-3770m
    3770-3775m
    Core photo at depth: 3775-3780m
    Core photo at depth: 3780-3785m
    Core photo at depth: 3785-3786m
    Core photo at depth: 3786-3790m
    Core photo at depth: 3790-3795m
    3775-3780m
    3780-3785m
    3785-3786m
    3786-3790m
    3790-3795m
    Core photo at depth: 3795-3800m
    Core photo at depth: 3800-3805m
    Core photo at depth: 3805-3810m
    Core photo at depth: 3810-3815m
    Core photo at depth: 3815-3820m
    3795-3800m
    3800-3805m
    3805-3810m
    3810-3815m
    3815-3820m
    Core photo at depth: 3820-3825m
    Core photo at depth: 3825-3830m
    Core photo at depth: 3830-3832m
    Core photo at depth: 3832-3837m
    Core photo at depth: 3837-3842m
    3820-3825m
    3825-3830m
    3830-3832m
    3832-3837m
    3837-3842m
    Core photo at depth: 3842-3847m
    Core photo at depth: 3847-3852m
    Core photo at depth: 3852-3856m
    Core photo at depth:  
    Core photo at depth:  
    3842-3847m
    3847-3852m
    3852-3856m