Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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31.12.2024 - 01:26
Time of last synchronization with Norwegian Offshore Directorate's internal systems

25/11-22

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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.
    25/11-22
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    25/11-22
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NH 9301 - INLINE 1156 & X-LINE 1642
    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.
    911-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.
    18
    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,
    07.01.1998
    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.
    24.01.1998
    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.
    24.01.2000
    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.
    29.08.2003
    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
    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.
    22.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    123.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1805.0
    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).
    1804.2
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.4
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    82
    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 CRETACEOUS
    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.
    TOR FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    59° 9' 40.27'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 31' 26.13'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6558249.06
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    472775.12
    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.
    3243

  • Wellbore history
    General
    Well 25/11-22 was drilled east of the Grane Field to test the hydrocarbon potential of the AQ prospect. Primary target was a prognosed 23 m thick Heimdal sand body within the Lista Formation shale. The trap was estimated as a stratigraphic pinch out of the sand.
    Operations and results
    Exploration well 25/11-22 was spudded with the semi-submersible installation "West Vanguard" on 7 January 1998 and drilled to a total depth of 1805 m, 31m into the Tor Formation. The well was drilled with seawater and bentonite down to 1249 m and with "ANCO 2000" mud from 1249 m to TD. No sand was detected. No hydrocarbons were detected. A total of 5 cores were cut from 1686 m to 1771 m in claystones in the Sele, Lista, and Våle Formations. The recovery varied from 20% to 99.7%. No fluid samples were taken. The well was permanently abandoned as a dry well on 24 January 1998.
    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]
    1252.00
    1805.00

  • 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
    1686.0
    1717.9
    [m ]
    2
    1718.0
    1722.4
    [m ]
    3
    1736.0
    1746.0
    [m ]
    4
    1747.0
    1760.3
    [m ]
    5
    1770.0
    1770.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    59.7
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: Core1-1
    Core photo at depth: Core1-2
    Core photo at depth: Core1-3
    Core photo at depth: Core1-4
    Core photo at depth: Core1-5
    Core1-1
    Core1-2
    Core1-3
    Core1-4
    Core1-5
    Core photo at depth: Core1-6
    Core photo at depth: Core1-7
    Core photo at depth: Core1-8
    Core photo at depth: Core1-9
    Core photo at depth: Core1-10
    Core1-6
    Core1-7
    Core1-8
    Core1-9
    Core1-10
    Core photo at depth: Core1-11
    Core photo at depth: Core1-12
    Core photo at depth: Core1-13
    Core photo at depth: Core1-14
    Core photo at depth: Core1-15
    Core1-11
    Core1-12
    Core1-13
    Core1-14
    Core1-15
    Core photo at depth: Core1-16
    Core photo at depth: Core1-17
    Core photo at depth: Core1-18
    Core photo at depth: Core1-19
    Core photo at depth: Core1-20
    Core1-16
    Core1-17
    Core1-18
    Core1-19
    Core1-20
    Core photo at depth: Core1-21
    Core photo at depth: Core1-22
    Core photo at depth: Core1-23
    Core photo at depth: Core1-24
    Core photo at depth: Core1-25
    Core1-21
    Core1-22
    Core1-23
    Core1-24
    Core1-25
    Core photo at depth: Core1-26
    Core photo at depth: Core1-27
    Core photo at depth: Core1-28
    Core photo at depth: Core1-29
    Core photo at depth: Core1-30
    Core1-26
    Core1-27
    Core1-28
    Core1-29
    Core1-30
    Core photo at depth: Core1-31
    Core photo at depth: Core1-32
    Core photo at depth: Core2-1
    Core photo at depth: Core2-2
    Core photo at depth: Core2-3
    Core1-31
    Core1-32
    Core2-1
    Core2-2
    Core2-3
    Core photo at depth: Core2-4
    Core photo at depth: Core2-5
    Core photo at depth: Core3-1
    Core photo at depth: Core3-2
    Core photo at depth: Core3-3
    Core2-4
    Core2-5
    Core3-1
    Core3-2
    Core3-3
    Core photo at depth: Core3-4
    Core photo at depth: Core3-5
    Core photo at depth: Core3-6
    Core photo at depth: Core3-7
    Core photo at depth: Core3-8
    Core3-4
    Core3-5
    Core3-6
    Core3-7
    Core3-8
    Core photo at depth: Core3-9
    Core photo at depth: Core3-10
    Core photo at depth: Core4-1
    Core photo at depth: Core4-2
    Core photo at depth: Core4-3
    Core3-9
    Core3-10
    Core4-1
    Core4-2
    Core4-3
    Core photo at depth: Core4-4
    Core photo at depth: Core4-5
    Core photo at depth: Core4-6
    Core photo at depth: Core4-7
    Core photo at depth: Core4-8
    Core4-4
    Core4-5
    Core4-6
    Core4-7
    Core4-8
    Core photo at depth: Core4-9
    Core photo at depth: Core4-10
    Core photo at depth: Core4-11
    Core photo at depth: Core4-12
    Core photo at depth: Core4-13
    Core4-9
    Core4-10
    Core4-11
    Core4-12
    Core4-13
    Core photo at depth: Core4-14
    Core photo at depth: Cores5-1
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core4-14
    Cores5-1

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1252.0
    [m]
    DC
    RRI
    1270.0
    [m]
    DC
    RRI
    1290.0
    [m]
    DC
    RRI
    1310.0
    [m]
    DC
    RRI
    1330.0
    [m]
    DC
    RRI
    1350.0
    [m]
    DC
    RRI
    1370.0
    [m]
    DC
    RRI
    1390.0
    [m]
    DC
    RRI
    1410.0
    [m]
    DC
    RRI
    1430.0
    [m]
    DC
    RRI
    1450.0
    [m]
    DC
    RRI
    1470.0
    [m]
    DC
    RRI
    1490.0
    [m]
    DC
    RRI
    1510.0
    [m]
    DC
    RRI
    1530.0
    [m]
    DC
    RRI
    1550.0
    [m]
    DC
    RRI
    1570.0
    [m]
    DC
    RRI
    1590.0
    [m]
    DC
    RRI
    1610.0
    [m]
    DC
    RRI
    1630.0
    [m]
    DC
    RRI
    1650.0
    [m]
    DC
    RRI
    1670.0
    [m]
    DC
    RRI
    1686.0
    [m]
    C
    RRI
    1688.0
    [m]
    C
    RRI
    1689.0
    [m]
    C
    RRI
    1690.0
    [m]
    C
    RRI
    1695.0
    [m]
    C
    RRI
    1696.0
    [m]
    C
    RRI
    1697.0
    [m]
    C
    RRI
    1698.0
    [m]
    C
    RRI
    1699.0
    [m]
    C
    RRI
    1700.0
    [m]
    C
    RRI
    1701.0
    [m]
    C
    RRI
    1705.0
    [m]
    C
    RRI
    1710.0
    [m]
    C
    RRI
    1715.0
    [m]
    C
    RRI
    1718.0
    [m]
    C
    RRI
    1720.0
    [m]
    C
    RRI
    1734.0
    [m]
    SWC
    RRI
    1741.0
    [m]
    C
    RRI
    1756.0
    [m]
    C
    RRI
    1758.0
    [m]
    C
    RRI
    1759.0
    [m]
    C
    RRI
    1760.0
    [m]
    DC
    RRI
    1761.0
    [m]
    SWC
    RRI
    1764.0
    [m]
    SWC
    RRI
    1765.0
    [m]
    DC
    RRI
    1767.0
    [m]
    SWC
    RRI
    1767.0
    [m]
    DC
    RRI
    1770.0
    [m]
    DC
    RRI
    1795.0
    [m]
    DC
    RRI
    1805.0
    [m]
    DC
    RRI

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.26

  • 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
    0.92
    pdf
    8.38

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST GR
    1675
    1785
    FMI DSI HNGS AMS
    206
    1803
    FMI DSI HNGS AMS
    1360
    1803
    MWD - GR RES DIR
    145
    1686
    MWD - GR RES DIR
    1771
    1805
    PEX-HALS TLD CNL SP GR AMS
    1205
    1803
    VSP GR
    180
    1790

  • 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
    209.0
    36
    209.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    1250.0
    17 1/2
    1250.0
    0.00
    LOT
    OPEN HOLE
    1599.0
    12 1/4
    1599.0
    0.00
    LOT
    OPEN HOLE
    1805.0
    8 1/2
    1805.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    209
    1.05
    WATER BASED
    530
    1.05
    WATER BASED
    1250
    1.20
    WATER BASED
    1343
    1.30
    12.0
    WATER BASED
    1652
    1.30
    20.0
    WATER BASED
    1718
    1.30
    17.0
    WATER BASED
    1736
    1.30
    20.0
    WATER BASED
    1759
    1.30
    21.0
    WATER BASED
    1780
    1.30
    20.0
    WATER BASED
    1805
    1.30
    20.0
    WATER BASED