Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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08.05.2024 - 01:33
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16/3-3

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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.
    16/3-3
    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.
    16/3-3
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    ES 89 - 111 SP. 185
    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.
    Esso Exploration and Production Norway 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.
    612-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.
    14
    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,
    24.07.1989
    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.
    06.08.1989
    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.
    06.08.1991
    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.
    19.10.2006
    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.
    28.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    119.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1566.0
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    61
    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.
    58° 49' 44.79'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 58' 21.84'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6521173.68
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    498425.63
    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.
    1415

  • Wellbore history
    General
    Well 16/3-3 is located on the eastern margin of the Utsira High in the North Sea. The primary objective of the well was to test the reservoir and hydrocarbon potential of the Paleocene Heimdal sands in the Havørn Prospect. The prospect sands pinches out to the east and south combined with a structural dip to the northwest. The source kitchen was expected to be the Late Jurassic Draupne Formation in the Southern Viking Graben. Top seal for the sands were prognosed to be the Late Paleocene- and the Eocene marine shales.
    Operations and results
    Wildcat well 16/3-3 was spudded with the semi-submersible installation Vildkat Explorer on 24 July 1989 and drilled to TD at 1566 m in the Late Cretaceous Tor Formation. No significant problems occurred during the operations. The well was drilled with seawater down to 445 m and with lignosulphonate/seawater and gel from 445 m to TD.
    Late Cretaceous rocks were encountered at 1488 m, underlying 1341 meters of Cenozoic claystones. The Late Cretaceous sediments (+ 78 m) consisted of white-creamy chalk. The Heimdal Formation sands were absent. No reservoir intervals were penetrated. No shows were recorded.
    No cores were cut and no fluid samples taken in this well.
    The well was permanently abandoned on 6 August 1989 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]
    460.00
    1566.00

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    460.0
    [m]
    DC
    520.0
    [m]
    DC
    550.0
    [m]
    DC
    580.0
    [m]
    DC
    610.0
    [m]
    DC
    640.0
    [m]
    DC
    670.0
    [m]
    DC
    1025.1
    [m]
    SWC
    1025.1
    [m]
    SWC
    STRATLAB
    1100.0
    [m]
    DC
    STRATLAB
    1110.0
    [m]
    DC
    STRATLAB
    1120.0
    [m]
    DC
    STRATL
    1130.0
    [m]
    DC
    STRATL
    1140.0
    [m]
    DC
    STRATL
    1152.0
    [m]
    SWC
    1163.1
    [m]
    SWC
    1163.1
    [m]
    SWC
    STRATLAB
    1170.0
    [m]
    DC
    STRATL
    1180.0
    [m]
    DC
    STRATL
    1190.0
    [m]
    DC
    STRATL
    1196.0
    [m]
    SWC
    STRATL
    1196.0
    [m]
    SWC
    1200.0
    [m]
    DC
    STRATLAB
    1210.0
    [m]
    DC
    STRATL
    1220.0
    [m]
    DC
    STRATL
    1230.0
    [m]
    DC
    STRATL
    1240.0
    [m]
    DC
    STRATL
    1247.0
    [m]
    SWC
    STRATL
    1247.0
    [m]
    SWC
    1257.0
    [m]
    SWC
    1257.0
    [m]
    SWC
    STRATLAB
    1266.0
    [m]
    SWC
    1280.0
    [m]
    DC
    STRATLAB
    1287.0
    [m]
    SWC
    STRATL
    1287.0
    [m]
    SWC
    1296.0
    [m]
    SWC
    1296.0
    [m]
    SWC
    STRATLAB
    1300.0
    [m]
    DC
    STRATL
    1311.1
    [m]
    SWC
    STRATL
    1311.1
    [m]
    SWC
    1320.0
    [m]
    DC
    STRATLAB
    1325.0
    [m]
    DC
    STRATL
    1330.0
    [m]
    DC
    STRATL
    1340.0
    [m]
    DC
    STRATL
    1346.0
    [m]
    SWC
    1346.0
    [m]
    SWC
    STRATLAB
    1366.1
    [m]
    SWC
    STRATL
    1366.1
    [m]
    SWC
    1371.1
    [m]
    SWC
    1371.1
    [m]
    SWC
    STRATLAB
    1374.0
    [m]
    SWC
    STRATL
    1374.0
    [m]
    SWC
    1378.0
    [m]
    SWC
    1378.0
    [m]
    SWC
    STRATLAB
    1393.0
    [m]
    SWC
    STRATL
    1393.0
    [m]
    SWC
    1400.0
    [m]
    DC
    STRATLAB
    1407.0
    [m]
    SWC
    STRATL
    1407.0
    [m]
    SWC
    1423.0
    [m]
    SWC
    STRATLAB
    1433.0
    [m]
    SWC
    STRATL
    1433.0
    [m]
    SWC
    1441.5
    [m]
    SWC
    1441.5
    [m]
    SWC
    STRATLAB
    1447.1
    [m]
    SWC
    STRATL
    1447.1
    [m]
    SWC
    1454.6
    [m]
    SWC
    1454.6
    [m]
    SWC
    STRATLAB
    1464.0
    [m]
    SWC
    STRATL
    1464.0
    [m]
    SWC
    1468.1
    [m]
    SWC
    1468.1
    [m]
    SWC
    STRATLAB
    1474.0
    [m]
    SWC
    STRATL
    1474.0
    [m]
    SWC
    1482.0
    [m]
    SWC
    1482.0
    [m]
    SWC
    STRATLAB
    1495.0
    [m]
    SWC
    1495.2
    [m]
    SWC
    STRATLAB
    1510.0
    [m]
    SWC
    1510.0
    [m]
    SWC
    STRATLAB
    1520.0
    [m]
    DC
    STRATL
    1530.0
    [m]
    DC
    STRATL
    1540.0
    [m]
    DC
    STRATL
    1550.0
    [m]
    DC
    STRATL
    1566.0
    [m]
    DC
    STRATL

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    147
    777
    1307
    1307
    1344
    1376
    1475
    1488
    1488

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.22

  • 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
    0.81
    pdf
    11.80

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL GR
    342
    779
    DIL GR LSS SP MSFL
    439
    1566
    LDT CNL GR NGT
    1002
    1544
    MWD
    190
    1010
    SWC
    1067
    1510
    VELOCITY
    968
    1488

  • 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
    181.0
    36
    181.0
    0.00
    LOT
    INTERM.
    13 3/8
    441.0
    17 1/2
    455.0
    1.77
    LOT
    INTERM.
    9 5/8
    1003.0
    12 1/4
    1010.0
    1.77
    LOT
    OPEN HOLE
    1566.0
    8 1/2
    1566.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    181
    1.03
    1.0
    WATER BASED
    27.07.1989
    225
    1.03
    1.0
    WATER BASED
    28.07.1989
    315
    1.15
    13.0
    7.7
    WATER BASED
    07.08.1989
    455
    1.03
    1.0
    WATER BASED
    28.07.1989
    455
    1.03
    1.0
    WATER BASED
    28.07.1989
    509
    1.12
    16.0
    8.1
    WATER BASED
    31.07.1989
    887
    1.16
    23.0
    8.6
    WATER BASED
    04.08.1989
    1010
    1.15
    11.0
    8.1
    WATER BASED
    31.07.1989
    1010
    1.15
    10.0
    13.4
    WATER BASED
    31.07.1989
    1187
    1.16
    15.0
    7.2
    WATER BASED
    01.08.1989
    1531
    1.16
    21.0
    8.6
    WATER BASED
    02.08.1989
    1566
    1.16
    20.0
    7.2
    WATER BASED
    03.08.1989