Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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6507/2-1

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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.
    6507/2-1
    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.
    6507/2-1
    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.
    518-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.
    98
    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,
    24.06.1986
    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.
    29.09.1986
    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.
    29.09.1988
    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.
    17.09.2007
    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.
    SHOWS
    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.
    381.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4477.0
    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).
    4475.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    4.3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    156
    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 TRIASSIC
    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.
    ÅRE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    65° 54' 2.48'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 26' 16.43'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7309911.23
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    428828.15
    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.
    911

  • Wellbore history
    General
    Well 6507/2-1 is located on the Dønna Terrace, offshore Mid Norway. The primary objective of the well was to test the hydrocarbon potential of Middle and Early Jurassic sandstone sequences. Secondary objective was to examine the possibilities of Cretaceous sand in the area.
    It was expected that the primary target, the Middle Jurassic Tomma sandstone (Fangst Group in today?s nomenclature) would be encountered at ca 3848 m whilst the Early Jurassic Aldra sandstone (Tilje Formation) was prognosed at ca 4158 m. Expected total depth for the well was 4823 m +/- 200 m or about 50 m into Triassic aged sediments.
    Operations and results
    Well 6507/2-1 was spudded with the semi-submersible installation Polar Pioneer on 24 June 1986 and drilled to TD at 4477 m in Late Triassic claystones and siltstones of the Åre Formation. The well had 29% down time, due mostly to problems with the seal assemblies and technical sidetracking. The sidetrack was kicked off from 3285 m after the pipe had stuck twice, at 3432 m and 3430 m. The well was drilled with seawater and high viscosity pills down to1064 m, with KCl/polymer mud from 1064 m to 3655 m (including sidetrack), and with gel/lignite/resinex mud from 3655 m to TD.
    The well penetrated several sandy intervals in the Cretaceous, the most important beeing a thin Lysing Formation sand from 2874 to 2879 m, and an Intra-Lange Formation sandy sequence from 3425 m to 3490 m. The Jurassic sandstones of the Fangst Group were encountered at 3858 m. Oil shows; staining and fluorescence were observed sporadically throughout the well from 2800 m to 4375 m. The strongest oil shows were observed in the Lysing and Lange Formation sandstones, and from 3858 m down to 3956 m in the Fangst and Båt Groups. Well site geochemical analyses indicated two source rock intervals in the well. The sequence from 3610 to 3858 m (the Viking Group) was considered to be a fair source rock containing mature Type II marginal Type III kerogen, while the interval 3956 to TD had many good quality coal horizons considered to have excellent potential and to contain mature hydrogen rich source material. No conventional cores were taken in this well. One RFT run was made and a total of 18 pressure points recorded, but no fluid samples were taken.
    The well was permanently abandoned on 29 September 1986 as a dry hole with residual hydrocarbon shows in both the Cretaceous and Jurassic sequences.
    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]
    500.00
    4477.00

  • 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
    488.0
    36
    490.0
    0.00
    LOT
    SURF.COND.
    20
    1050.0
    26
    1080.0
    1.70
    LOT
    INTERM.
    13 3/8
    1880.0
    17 1/2
    1900.0
    1.82
    LOT
    INTERM.
    9 5/8
    3630.0
    12 1/4
    3655.0
    1.97
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL
    664
    1878
    CBL VDL
    2159
    3640
    CST GR
    3421
    3550
    CST GR
    3640
    4000
    CST GR
    4012
    4452
    DIL LSS GR SP
    3625
    4478
    DLL GR SP
    488
    1078
    DLL LSS GR SP
    1047
    1895
    DLL LSS GR SP
    1878
    3655
    DLL MSFL GR CAL
    3625
    4478
    LDL CNL GR CAL
    1047
    1892
    LDL CNL GR CAL
    1878
    3655
    LDL CNL GR CAL
    3625
    4478
    LSS GR
    488
    1078
    MSFL GR CAL
    1878
    3655
    MWD
    404
    3743
    RFT GR
    3860
    4153
    SHDT GR
    3625
    4450
    VSP
    1055
    4450

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.20
    pdf
    1.57
    pdf
    0.40

  • 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
    7.93
    pdf
    2.81

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    434
    1.10
    50.0
    25.0
    WATER BASED
    24.06.1986
    490
    1.10
    50.0
    25.0
    WATER BASED
    25.06.1986
    490
    1.10
    50.0
    25.0
    WATER BASED
    26.06.1986
    766
    1.09
    50.0
    25.0
    WATER BASED
    30.06.1986
    1080
    1.17
    6.0
    10.0
    WATER BASED
    30.06.1986
    1080
    1.15
    7.0
    12.0
    WATER BASED
    30.06.1986
    1080
    1.15
    4.0
    14.0
    WATER BASED
    30.06.1986
    1080
    1.15
    4.0
    8.0
    WATER BASED
    01.07.1986
    1080
    1.15
    7.0
    8.0
    WATER BASED
    02.07.1986
    1080
    1.15
    6.0
    10.0
    WATER BASED
    03.07.1986
    1080
    1.15
    WATER BASED
    06.07.1986
    1080
    1.20
    17.0
    12.0
    WATER BASED
    06.07.1986
    1080
    1.20
    17.0
    12.0
    WATER BASED
    07.07.1986
    1080
    1.20
    18.0
    11.0
    WATER BASED
    08.07.1986
    1403
    1.30
    25.0
    16.0
    WATER BASED
    10.07.1986
    1706
    1.31
    25.0
    16.0
    WATER BASED
    11.07.1986
    1770
    1.77
    18.0
    5.0
    WATER BASED
    25.09.1986
    1831
    1.34
    23.0
    15.0
    WATER BASED
    14.07.1986
    1900
    1.57
    35.0
    19.0
    WATER BASED
    14.07.1986
    1900
    1.57
    33.0
    17.0
    WATER BASED
    14.07.1986
    1900
    1.57
    34.0
    16.0
    WATER BASED
    16.07.1986
    1900
    1.57
    34.0
    16.0
    WATER BASED
    17.07.1986
    1900
    1.57
    34.0
    16.0
    WATER BASED
    18.07.1986
    1900
    1.57
    30.0
    13.0
    WATER BASED
    21.07.1986
    1900
    1.57
    34.0
    16.0
    WATER BASED
    15.07.1986
    1903
    1.57
    29.0
    11.0
    WATER BASED
    21.07.1986
    2096
    1.62
    37.0
    16.0
    WATER BASED
    21.07.1986
    2403
    1.65
    32.0
    11.0
    WATER BASED
    22.07.1986
    2444
    1.65
    34.0
    11.0
    WATER BASED
    24.07.1986
    2641
    1.65
    33.0
    10.0
    WATER BASED
    24.07.1986
    2642
    1.65
    36.0
    9.0
    WATER BASED
    25.07.1986
    2659
    1.65
    35.0
    10.0
    WATER BASED
    27.07.1986
    2722
    1.65
    32.0
    8.0
    WATER BASED
    27.07.1986
    2730
    1.65
    31.0
    8.0
    WATER BASED
    27.07.1986
    2841
    1.65
    35.0
    8.0
    WATER BASED
    28.07.1986
    2872
    1.65
    32.0
    10.0
    WATER BASED
    29.07.1986
    2960
    1.65
    28.0
    11.0
    WATER BASED
    30.07.1986
    3068
    1.65
    20.0
    5.0
    WATER BASED
    31.07.1986
    3166
    1.65
    24.0
    6.0
    WATER BASED
    03.08.1986
    3234
    1.65
    24.0
    8.0
    WATER BASED
    07.08.1986
    3259
    1.65
    21.0
    6.0
    WATER BASED
    03.08.1986
    3320
    1.65
    23.0
    5.0
    WATER BASED
    17.08.1986
    3345
    1.65
    20.0
    9.0
    WATER BASED
    03.08.1986
    3380
    1.65
    23.0
    6.0
    WATER BASED
    11.08.1986
    3380
    1.65
    16.0
    3.0
    WATER BASED
    11.08.1986
    3380
    1.65
    27.0
    6.0
    WATER BASED
    13.08.1986
    3380
    1.65
    21.0
    6.0
    WATER BASED
    13.08.1986
    3380
    1.66
    26.0
    5.0
    WATER BASED
    14.08.1986
    3417
    1.65
    23.0
    6.0
    WATER BASED
    17.08.1986
    3427
    1.65
    20.0
    8.0
    WATER BASED
    04.08.1986
    3432
    1.65
    23.0
    7.0
    WATER BASED
    05.08.1986
    3432
    1.65
    23.0
    8.0
    WATER BASED
    06.08.1986
    3432
    1.65
    21.0
    9.0
    WATER BASED
    11.08.1986
    3501
    1.66
    25.0
    7.0
    WATER BASED
    17.08.1986
    3567
    1.65
    25.0
    9.0
    WATER BASED
    18.08.1986
    3625
    1.65
    22.0
    7.0
    WATER BASED
    19.08.1986
    3655
    1.65
    21.0
    7.0
    WATER BASED
    20.08.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    21.08.1986
    3655
    1.65
    20.0
    6.0
    WATER BASED
    24.08.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    24.08.1986
    3655
    1.65
    21.0
    6.0
    WATER BASED
    24.08.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    25.08.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    26.08.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    28.08.1986
    3655
    1.65
    22.0
    8.0
    WATER BASED
    02.09.1986
    3655
    1.65
    22.0
    7.0
    WATER BASED
    29.08.1986
    3659
    1.46
    16.0
    5.0
    WATER BASED
    02.09.1986
    3668
    1.46
    16.0
    5.0
    WATER BASED
    02.09.1986
    3743
    1.46
    16.0
    6.0
    WATER BASED
    04.09.1986
    3802
    1.46
    16.0
    6.0
    WATER BASED
    04.09.1986
    3861
    1.70
    21.0
    6.0
    WATER BASED
    05.09.1986
    3892
    1.77
    21.0
    8.0
    WATER BASED
    08.09.1986
    3979
    1.77
    22.0
    10.0
    WATER BASED
    08.09.1986
    4045
    1.77
    20.0
    9.0
    WATER BASED
    08.09.1986
    4112
    1.77
    21.0
    7.0
    WATER BASED
    09.09.1986
    4182
    1.77
    20.0
    7.0
    WATER BASED
    10.09.1986
    4206
    1.77
    19.0
    8.0
    WATER BASED
    11.09.1986
    4244
    1.77
    20.0
    9.0
    WATER BASED
    15.09.1986
    4296
    1.77
    19.0
    7.0
    WATER BASED
    15.09.1986
    4375
    1.77
    19.0
    9.0
    WATER BASED
    15.09.1986
    4444
    1.77
    16.0
    7.0
    WATER BASED
    15.09.1986
    4459
    1.77
    18.0
    8.0
    WATER BASED
    16.09.1986
    4477
    1.77
    17.0
    6.0
    WATER BASED
    18.09.1986
    4477
    1.77
    16.0
    5.0
    WATER BASED
    21.09.1986
    4477
    1.77
    18.0
    5.0
    WATER BASED
    22.09.1986
    4477
    1.77
    17.0
    6.0
    WATER BASED
    23.09.1986
    4477
    1.77
    17.0
    6.0
    WATER BASED
    24.09.1986
    4477
    1.77
    16.0
    6.0
    WATER BASED
    17.09.1986

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    0.0
    [unknown]