Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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13.11.2024 - 01:26
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6507/6-1

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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.
    6507/6-1
    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
    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.
    6507/6-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NRGS - 84 - 429 & SP. 2235
    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.
    Saga Petroleum ASA
    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.
    517-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.
    70
    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,
    15.06.1986
    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.
    23.08.1986
    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.
    23.08.1988
    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.
    08.03.2004
    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.
    GAS 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.
    26.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    419.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4040.0
    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).
    4039.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    4.1
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    116
    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.
    EARLY 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.
    NO FORMAL NAME
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    65° 36' 37.59'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 43' 43.04'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7277265.27
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    441417.85
    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.
    910

  • Wellbore history
    General
    Well 6507/6-1 was drilled close to the highest point of the main structure in the block. The prospect is defined at the Late Kimmerian Unconformity along the crest of the NNE-SSW striking Nordland Ridge. The primary objective of the well was to test the hydrocarbon potential and reservoir quality in the main structure. In addition the well was expected to obtain stratigraphic information of a complete Triassic sequence.
    The prognosed depth was 4030 m.
    Operations and results
    Wildcat well 6507/6-1 was spudded with Wi1h. Wi1helmsen Offshore Services semi-submersible installation Treasure Saga 15 June 1986 and drilled to TD at 4040 m in Early Triassic rocks. The well was drilled with spud mud to 584 m, with gel mud from 584 m to 975 m, with Gypsum/Polymer mud from 975 m to 1611 m, with NaCl saturated mud from 1611 m to 3165 m, and with a gel mud again from 3165 m to TD. Drilling proceeded without significant problems.
    The larger part of Tertiary, the whole Cretaceous sequence, and most of the Jurassic was missing in the well. Late Pliocene sediments were found to rest directly on Early Jurassic sediments. The top of the reservoir (Åre Formation) came in at 1018 m. It contained 7 m of methane bearing sandstone. The gas water contact was estimated at 1030 m. The Triassic grey beds came in at 1376 m. Apart from a weak cut fluorescence at 1032 m on a core from the Åre Formation no show was recorded throughout the well. Two cores were cut in the interval 1023 m to 1056 m in the Åre fm. and two cores were cut further down in the intervals 3041 m to 3045.2 m (Middle to Early Triassic) and 3995 m to 4013.2 m (Early Triassic). A FMT segregated sample was taken at 1028 m. It contained no oil, only gas close to 99% methane with traces of other constituent gasses including heavier hydrocarbon gases. A total of 265 sidewall cores were recovered, of which 213 were taken in Triassic rocks.
    The well was plugged and abandoned completed 23 August 1986 as a dry hole.
    Testing
    No drill stem test was performed

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    NO
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    630.00
    4038.00

  • 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
    1023.0
    1040.8
    [m ]
    2
    1045.0
    1056.0
    [m ]
    3
    3041.0
    3045.2
    [m ]
    4
    3995.0
    4013.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    51.2
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    940.0
    [m]
    DC
    RRI
    960.0
    [m]
    DC
    RRI
    1023.0
    [m]
    C
    RRI
    1024.0
    [m]
    C
    RRI
    1025.9
    [m]
    C
    RRI
    1032.0
    [m]
    C
    RRI
    1040.0
    [m]
    C
    RRI
    1040.8
    [m]
    C
    RRI
    1050.0
    [m]
    C
    RRI
    1053.3
    [m]
    C
    RRI
    1056.0
    [m]
    C
    RRI
    1089.0
    [m]
    DC
    RRI
    1173.0
    [m]
    DC
    RRI
    1191.0
    [m]
    DC
    RRI
    1209.0
    [m]
    DC
    RRI
    1227.0
    [m]
    DC
    RRI
    1242.0
    [m]
    DC
    RRI
    1254.0
    [m]
    DC
    RRI
    1266.0
    [m]
    DC
    RRI
    1290.0
    [m]
    DC
    RRI
    1308.0
    [m]
    DC
    RRI
    1326.0
    [m]
    DC
    RRI
    1338.0
    [m]
    DC
    RRI
    1350.0
    [m]
    DC
    RRI
    1356.0
    [m]
    DC
    RRI
    1371.0
    [m]
    DC
    RRI
    1377.0
    [m]
    DC
    RRI
    1395.0
    [m]
    DC
    RRI
    1413.0
    [m]
    DC
    RRI
    1431.0
    [m]
    DC
    RRI
    1449.0
    [m]
    DC
    RRI
    1458.0
    [m]
    DC
    RRI
    1476.0
    [m]
    DC
    RRI
    1494.0
    [m]
    DC
    RRI
    1512.0
    [m]
    DC
    RRI
    1530.0
    [m]
    DC
    RRI
    1548.0
    [m]
    DC
    RRI
    1551.0
    [m]
    DC
    RRI

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.64

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    2.06

  • 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
    13.52

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CDL CNL GR
    2212
    3161
    CDL CNL GR
    3146
    4040
    CDL CNL SPECTRA
    956
    1406
    CDL LSBHC GR
    1350
    2220
    COREGUN
    617
    974
    COREGUN
    1023
    1069
    COREGUN
    3041
    3056
    COREGUN
    3995
    4013
    DIFL LSBHC CDL GR CAL
    617
    974
    DIFL LSBHC GR CAL
    956
    1404
    DIFL LSBHC GR CAL
    3146
    4040
    DIPLOG GR
    956
    1397
    DIPLOG GR
    1350
    2221
    DIPLOG GR
    2212
    3161
    DIPLOG GR
    3146
    4040
    DLL GR
    1350
    2222
    DLL GR
    2212
    3163
    FMT
    1018
    1377
    FMT
    1018
    1038
    LSBHC GR
    2212
    3158
    MWD - GR RES
    617
    4037
    VSP
    422
    1410
    VSP
    650
    4024

  • 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
    616.0
    36
    622.0
    1.26
    LOT
    SURF.COND.
    20
    959.0
    26
    975.0
    1.61
    LOT
    INTERM.
    13 3/8
    2214.0
    17 1/2
    2224.0
    1.73
    LOT
    INTERM.
    9 5/8
    3150.0
    12 1/4
    3165.0
    2.04
    LOT
    OPEN HOLE
    4040.0
    8 1/2
    4040.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    584
    1.03
    WATER BASED
    17.06.1986
    616
    1.03
    WATER BASED
    18.06.1986
    627
    1.10
    24.0
    5.8
    WATER BASED
    19.06.1986
    975
    1.15
    8.0
    21.1
    WATER BASED
    23.06.1986
    975
    1.20
    8.0
    18.2
    WATER BASED
    23.06.1986
    975
    1.30
    17.0
    11.5
    WATER BASED
    24.06.1986
    975
    1.12
    7.0
    16.8
    WATER BASED
    19.06.1986
    975
    1.20
    WATER BASED
    24.06.1986
    1017
    1.15
    11.0
    6.8
    WATER BASED
    24.06.1986
    1018
    1.15
    16.0
    9.1
    WATER BASED
    25.06.1986
    1018
    1.32
    17.0
    8.7
    WATER BASED
    30.06.1986
    1018
    1.39
    20.0
    9.1
    WATER BASED
    30.06.1986
    1018
    1.38
    21.0
    9.1
    WATER BASED
    07.07.1986
    1018
    1.20
    18.0
    9.6
    WATER BASED
    30.06.1986
    1026
    1.50
    18.0
    10.6
    WATER BASED
    25.06.1986
    1095
    1.20
    WATER BASED
    21.08.1986
    1716
    1.39
    20.0
    9.6
    WATER BASED
    07.07.1986
    1745
    1.38
    22.0
    9.6
    WATER BASED
    07.07.1986
    1767
    1.39
    20.0
    9.6
    WATER BASED
    07.07.1986
    1844
    1.40
    23.0
    9.6
    WATER BASED
    07.07.1986
    1980
    1.37
    20.0
    9.1
    WATER BASED
    07.07.1986
    2013
    1.37
    20.0
    10.1
    WATER BASED
    14.07.1986
    2172
    1.37
    20.0
    8.2
    WATER BASED
    14.07.1986
    2214
    1.20
    19.0
    7.2
    WATER BASED
    31.07.1986
    2214
    1.20
    21.0
    7.7
    WATER BASED
    31.07.1986
    2224
    1.38
    23.0
    9.1
    WATER BASED
    14.07.1986
    2224
    1.38
    21.0
    9.6
    WATER BASED
    14.07.1986
    2224
    1.38
    19.0
    5.8
    WATER BASED
    14.07.1986
    2224
    1.38
    21.0
    4.8
    WATER BASED
    14.07.1986
    2224
    1.38
    18.0
    7.2
    WATER BASED
    21.07.1986
    2224
    1.38
    22.0
    8.7
    WATER BASED
    21.07.1986
    2400
    1.38
    23.0
    10.1
    WATER BASED
    14.07.1986
    2423
    1.35
    18.0
    7.2
    WATER BASED
    21.07.1986
    2424
    1.35
    18.0
    7.2
    WATER BASED
    21.07.1986
    2605
    1.35
    20.0
    7.2
    WATER BASED
    21.07.1986
    2891
    1.35
    19.0
    7.2
    WATER BASED
    21.07.1986
    2946
    1.35
    20.0
    7.2
    WATER BASED
    21.07.1986
    3000
    1.20
    WATER BASED
    19.08.1986
    3041
    1.36
    19.0
    7.2
    WATER BASED
    28.07.1986
    3052
    1.36
    19.0
    7.2
    WATER BASED
    28.07.1986
    3052
    1.36
    19.0
    7.2
    WATER BASED
    28.07.1986
    3120
    1.36
    18.0
    7.2
    WATER BASED
    28.07.1986
    3150
    1.20
    16.0
    7.7
    WATER BASED
    04.08.1986
    3165
    1.36
    18.0
    7.2
    WATER BASED
    28.07.1986
    3165
    1.35
    17.0
    6.3
    WATER BASED
    28.07.1986
    3165
    1.32
    14.0
    5.8
    WATER BASED
    28.07.1986
    3165
    1.32
    14.0
    5.8
    WATER BASED
    31.07.1986
    3221
    1.20
    14.0
    6.8
    WATER BASED
    31.07.1986
    3335
    1.20
    16.0
    7.2
    WATER BASED
    04.08.1986
    3386
    1.20
    16.0
    5.8
    WATER BASED
    04.08.1986
    3447
    1.20
    16.0
    6.8
    WATER BASED
    05.08.1986
    3560
    1.20
    16.0
    6.3
    WATER BASED
    06.08.1986
    3611
    1.20
    16.0
    5.8
    WATER BASED
    06.08.1986
    3621
    1.23
    14.0
    6.3
    WATER BASED
    07.08.1986
    3704
    1.20
    16.0
    5.8
    WATER BASED
    11.08.1986
    3793
    1.20
    17.0
    6.3
    WATER BASED
    11.08.1986
    3822
    1.20
    16.0
    6.3
    WATER BASED
    12.08.1986
    3863
    1.20
    17.0
    6.8
    WATER BASED
    12.08.1986
    3934
    1.20
    18.0
    6.8
    WATER BASED
    13.08.1986
    3984
    1.20
    18.0
    6.3
    WATER BASED
    13.08.1986
    3995
    1.20
    18.0
    6.3
    WATER BASED
    14.08.1986
    4013
    1.20
    18.0
    5.8
    WATER BASED
    18.08.1986
    4040
    1.20
    18.0
    5.3
    WATER BASED
    17.08.1986
    4040
    1.20
    18.0
    5.3
    WATER BASED
    18.08.1986

  • Pressure plots
    Pressure plots
    The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.
    Pressure plots
    Document name
    Document format
    Document size [MB]
    pdf
    0.28