Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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09.05.2024 - 01:35
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31/2-G-4 H

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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.
    31/2-G-4 H
    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.
    31/2-G-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.
    900-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.
    TROLL G
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    28
    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,
    19.03.1994
    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.
    15.04.1994
    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.
    15.04.1996
    Plugged date
    Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).
    15.04.1994
    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.
    NOT APPLICABLE
    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.
    329.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1944.0
    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).
    1735.0
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 45' 9.37'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 26' 21.77'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6735470.89
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    523949.94
    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.
    2307
  • 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]
    870.00
    1940.00
  • 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
    1596.1
    1613.9
    [m ]
    2
    1614.6
    1632.1
    [m ]
    3
    1632.6
    1650.0
    [m ]
    4
    1650.1
    1667.9
    [m ]
    5
    1668.3
    1686.3
    [m ]
    6
    1686.6
    1705.0
    [m ]
    7
    1705.2
    1723.4
    [m ]
    8
    1723.4
    1741.7
    [m ]
    9
    1742.4
    1760.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    161.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES
  • Core photos

    Core photos
    Core photo at depth: 1596-1600m
    Core photo at depth: 1600-1604m
    Core photo at depth: 1604-1608m
    Core photo at depth: 1608-1612m
    Core photo at depth: 1612-1614m
    1596-1600m
    1600-1604m
    1604-1608m
    1608-1612m
    1612-1614m
    Core photo at depth: 1614-1618m
    Core photo at depth: 1618-1622m
    Core photo at depth: 1622-1626m
    Core photo at depth: 1626-1630m
    Core photo at depth: 1630-1632m
    1614-1618m
    1618-1622m
    1622-1626m
    1626-1630m
    1630-1632m
    Core photo at depth: 1632-1636m
    Core photo at depth: 1636-1640m
    Core photo at depth: 1640-1644m
    Core photo at depth: 1644-1648m
    Core photo at depth: 1648-1650m
    1632-1636m
    1636-1640m
    1640-1644m
    1644-1648m
    1648-1650m
    Core photo at depth: 1650-1654m
    Core photo at depth: 1654-1658m
    Core photo at depth: 1658-1662m
    Core photo at depth: 1662-1666m
    Core photo at depth: 1666-1668m
    1650-1654m
    1654-1658m
    1658-1662m
    1662-1666m
    1666-1668m
    Core photo at depth: 1668-1672m
    Core photo at depth: 1672-1676m
    Core photo at depth: 1676-1680m
    Core photo at depth: 1680-1684m
    Core photo at depth: 1684-1686m
    1668-1672m
    1672-1676m
    1676-1680m
    1680-1684m
    1684-1686m
    Core photo at depth: 1686-1690m
    Core photo at depth: 1690-1694m
    Core photo at depth: 1694-1698m
    Core photo at depth: 1698-1702m
    Core photo at depth: 1702-1705m
    1686-1690m
    1690-1694m
    1694-1698m
    1698-1702m
    1702-1705m
    Core photo at depth: 1705-1709m
    Core photo at depth: 1709-1713m
    Core photo at depth: 1713-1717m
    Core photo at depth: 1717-1721m
    Core photo at depth: 1721-1723m
    1705-1709m
    1709-1713m
    1713-1717m
    1717-1721m
    1721-1723m
    Core photo at depth: 1723-1727m
    Core photo at depth: 1727-1731m
    Core photo at depth: 1731-1735m
    Core photo at depth: 1735-1739m
    Core photo at depth: 1739-1742m
    1723-1727m
    1727-1731m
    1731-1735m
    1735-1739m
    1739-1742m
    Core photo at depth: 1742-1746m
    Core photo at depth: 1746-1750m
    Core photo at depth: 1750-1754m
    Core photo at depth: 1754-1758m
    Core photo at depth: 1758-1761m
    1742-1746m
    1746-1750m
    1750-1754m
    1754-1758m
    1758-1761m