Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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05.11.2024 - 01:27
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6507/8-6

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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.
    6507/8-6
    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.
    6507/8-6
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    ST 9102- INLINE 1518 & CROSSLINE 942
    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.
    Den norske stats oljeselskap 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.
    770-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.
    42
    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,
    29.08.1993
    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.
    09.10.1993
    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.
    09.10.1995
    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.
    13.12.2005
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    356.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2850.0
    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).
    2850.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    3.1
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    85
    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.
    RED BEDS (INFORMAL)
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    65° 24' 35.96'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 28' 52.74'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7255180.50
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    429485.26
    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.
    2183

  • Wellbore history
    General
    Wildcat well 6507/8-6 was drilled on a structure ca 4.5 km NE of the Heidrun Nord 6507/8-4 Discovery well. The main objective was to test the potential for hydrocarbons in Middle and Early Jurassic sandstones in the Fangst and BÅt Groups.
    Operations and results
    Wildcat well was spudded with the semi-submersible installation Deepsea Bergen on 29 August 1993 and drilled to TD at 2850 m in the Triassic Red Beds. After setting the 13 3/8 casing shoe at 1605 m 213.5 hours rig time was spent due to problems with running the pack off assembly. The interval from seafloor to 1605 m was logged by MWD only. No other significant deviation from planned operations occurred. The well was drilled with seawater and hi-vis pills down to 685 m and with gypsum/PAC from 685 m to TD.
    In addition to sandstones of Middle and Early Jurassic age also Melke sandstones of Late Jurassic age were encountered. The well was 100% water wet all through. Fluorescence but no cut was observed in two samples from 2073 (siltstone/limestone in base intra-Melke sandstone) and 2232 m (sandstone in Tilje Formation). One conventional core was cut in the interval 2054 m to 2072 m in the intra-Melke sandstone. Only 5.3 m (24.9%) was recovered. One segregated sample was taken at 2049.0 m in the intra-Melke sandstone. Both chambers contained water and mud filtrate.
    The well was permanently abandoned on 9 October 1993 as a dry well.
    Testing
    No drill stem test was performed in the well.

  • 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]
    690.00
    2850.00

  • 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
    2054.0
    2059.3
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    5.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2054-2058m
    Core photo at depth: 2058-2059m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    2054-2058m
    2058-2059m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1610.0
    [m]
    DC
    GEOST
    1630.0
    [m]
    DC
    GEOST
    1640.0
    [m]
    DC
    GEOST
    1660.0
    [m]
    DC
    GEOST
    1672.5
    [m]
    SWC
    STATO
    1689.9
    [m]
    SWC
    STATO
    1700.0
    [m]
    DC
    GEOST
    1718.1
    [m]
    SWC
    STATO
    1727.1
    [m]
    SWC
    STATO
    1735.1
    [m]
    SWC
    STATO
    1755.1
    [m]
    SWC
    STATO
    1775.6
    [m]
    SWC
    STATO
    1790.0
    [m]
    DC
    GEOST
    1797.6
    [m]
    SWC
    STATO
    1815.0
    [m]
    DC
    GEOST
    1829.6
    [m]
    SWC
    STATO
    1877.5
    [m]
    SWC
    STATO
    1910.0
    [m]
    SWC
    STATO
    1915.0
    [m]
    SWC
    STATO
    1917.7
    [m]
    SWC
    STATO
    1930.0
    [m]
    DC
    GEOST
    1936.0
    [m]
    SWC
    STATO
    1948.0
    [m]
    SWC
    STATO
    1957.0
    [m]
    SWC
    STATO
    1962.0
    [m]
    SWC
    STATO
    1967.5
    [m]
    SWC
    STATO
    1976.0
    [m]
    SWC
    STATO
    1985.0
    [m]
    DC
    GEOST
    1986.5
    [m]
    SWC
    STATO
    1995.0
    [m]
    SWC
    STATO
    2005.0
    [m]
    SWC
    STATO
    2019.0
    [m]
    SWC
    STATO
    2030.0
    [m]
    DC
    GEOST
    2031.5
    [m]
    SWC
    STATO
    2042.5
    [m]
    SWC
    STATO
    2054.0
    [m]
    DC
    STATO
    2054.3
    [m]
    C
    RRI
    2056.0
    [m]
    C
    GEOST
    2057.0
    [m]
    C
    STATO
    2057.5
    [m]
    C
    RRI
    2058.5
    [m]
    C
    RRI
    2058.7
    [m]
    C
    STATO
    2058.8
    [m]
    C
    RRI
    2059.0
    [m]
    C
    GEOST
    2064.0
    [m]
    SWC
    GEOST
    2069.0
    [m]
    SWC
    STATO
    2072.0
    [m]
    SWC
    STATO
    2074.0
    [m]
    SWC
    STATO
    2075.5
    [m]
    SWC
    GEOST
    2083.0
    [m]
    SWC
    STATO
    2085.0
    [m]
    SWC
    GEOST
    2089.0
    [m]
    SWC
    GEOST
    2090.0
    [m]
    DC
    STATO
    2092.0
    [m]
    SWC
    STATO
    2095.5
    [m]
    SWC
    STATO
    2102.5
    [m]
    SWC
    STATO
    2110.0
    [m]
    SWC
    STATO
    2112.0
    [m]
    DC
    GEOST
    2122.0
    [m]
    SWC
    GEOST
    2124.0
    [m]
    DC
    GEOST
    2126.5
    [m]
    SWC
    GEOST
    2139.5
    [m]
    SWC
    STATO
    2151.0
    [m]
    SWC
    STATO
    2154.0
    [m]
    DC
    GEOST
    2158.0
    [m]
    SWC
    STATO
    2172.0
    [m]
    DC
    GEOST
    2177.0
    [m]
    SWC
    STATO
    2190.0
    [m]
    DC
    GEOST
    2200.0
    [m]
    DC
    GEOST
    2207.0
    [m]
    SWC
    STATO
    2219.0
    [m]
    SWC
    STATO
    2235.0
    [m]
    DC
    GEOST
    2250.0
    [m]
    DC
    GEOST
    2256.0
    [m]
    SWC
    STATO
    2271.0
    [m]
    DC
    GEOST
    2286.0
    [m]
    DC
    GEOST
    2300.0
    [m]
    DC
    GEOST
    2316.0
    [m]
    SWC
    STATO
    2330.0
    [m]
    SWC
    STATO
    2346.0
    [m]
    DC
    GEOST
    2361.0
    [m]
    DC
    GEOST
    2373.0
    [m]
    DC
    GEOST
    2379.0
    [m]
    SWC
    STATO
    2391.0
    [m]
    DC
    GEOST
    2412.0
    [m]
    DC
    GEOST
    2427.0
    [m]
    DC
    GEOST
    2440.0
    [m]
    SWC
    STATO
    2457.0
    [m]
    DC
    GEOST
    2469.0
    [m]
    DC
    GEOST
    2484.0
    [m]
    DC
    GEOST
    2499.0
    [m]
    DC
    GEOST
    2514.0
    [m]
    DC
    GEOST
    2522.0
    [m]
    SWC
    STATO
    2534.0
    [m]
    SWC
    STATO
    2550.0
    [m]
    DC
    GEOST
    2565.0
    [m]
    DC
    GEOST
    2580.0
    [m]
    DC
    GEOST
    2590.0
    [m]
    SWC
    STATO
    2604.0
    [m]
    DC
    GEOST
    2619.0
    [m]
    DC
    GEOST
    2631.0
    [m]
    DC
    GEOST
    2649.0
    [m]
    DC
    GEOST
    2664.0
    [m]
    DC
    GEOST
    2679.0
    [m]
    DC
    GEOST
    2694.0
    [m]
    DC
    GEOST
    2709.0
    [m]
    DC
    GEOST
    2721.0
    [m]
    DC
    GEOST
    2742.0
    [m]
    DC
    GEOST
    2754.0
    [m]
    DC
    GEOST
    2769.0
    [m]
    DC
    GEOST
    2784.0
    [m]
    DC
    GEOST
    2802.0
    [m]
    DC
    GEOST
    2814.0
    [m]
    DC
    GEOST
    2829.0
    [m]
    DC
    GEOST
    2850.0
    [m]
    DC
    GEOST

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    5.51

  • 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
    44.99

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBIL GR
    2035
    2808
    CBL VDL GR
    1512
    1690
    DIFL ACL ZDL GR
    1605
    1899
    DIFL MAC GR
    1850
    2582
    DIFL MAC GR
    2582
    2822
    FMT QDYNE GR
    2049
    2612
    HXDIP GR
    1902
    2814
    MWD - DIR
    450
    685
    MWD - GR RES DIR
    685
    2850
    VELOCITY
    500
    2810
    ZDL CNL GR
    1902
    2827

  • 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
    441.0
    36
    441.0
    0.00
    LOT
    INTERM.
    20
    673.0
    26
    673.0
    1.38
    LOT
    INTERM.
    13 3/8
    1605.0
    17 1/2
    1605.0
    1.72
    LOT
    INTERM.
    9 5/8
    1902.0
    12 1/4
    1902.0
    1.76
    LOT
    OPEN HOLE
    2850.0
    8 1/2
    2850.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    565
    1.03
    DUMMY
    01.09.1993
    685
    1.20
    DUMMY
    03.09.1993
    685
    1.03
    DUMMY
    06.09.1993
    685
    1.03
    DUMMY
    06.09.1993
    685
    1.03
    DUMMY
    02.09.1993
    1076
    1.30
    19.0
    4.0
    WATER BASED
    06.09.1993
    1468
    1.30
    19.0
    6.5
    WATER BASED
    07.09.1993
    1620
    1.30
    22.0
    6.5
    WATER BASED
    09.09.1993
    1620
    1.30
    18.0
    5.0
    WATER BASED
    09.09.1993
    1620
    1.30
    18.0
    5.0
    WATER BASED
    13.09.1993
    1620
    1.30
    18.0
    5.0
    WATER BASED
    13.09.1993
    1620
    1.30
    16.0
    4.0
    WATER BASED
    13.09.1993
    1620
    1.30
    19.0
    5.5
    WATER BASED
    13.09.1993
    1620
    1.30
    19.0
    6.0
    WATER BASED
    15.09.1993
    1620
    1.30
    20.0
    5.5
    WATER BASED
    17.09.1993
    1620
    1.30
    20.0
    7.0
    WATER BASED
    17.09.1993
    1620
    1.30
    22.0
    7.0
    WATER BASED
    20.09.1993
    1620
    1.30
    19.0
    5.5
    WATER BASED
    20.09.1993
    1760
    1.40
    23.0
    7.0
    WATER BASED
    20.09.1993
    1815
    1.40
    23.0
    7.0
    WATER BASED
    20.09.1993
    1840
    1.40
    24.0
    6.0
    WATER BASED
    22.09.1993
    1840
    1.45
    25.0
    6.0
    WATER BASED
    22.09.1993
    1919
    1.40
    24.0
    6.0
    WATER BASED
    22.09.1993
    2054
    1.20
    22.0
    6.5
    WATER BASED
    28.09.1993
    2072
    1.20
    21.0
    6.5
    WATER BASED
    28.09.1993
    2305
    1.20
    22.0
    7.0
    WATER BASED
    28.09.1993
    2484
    1.20
    21.0
    5.5
    WATER BASED
    28.09.1993
    2768
    1.20
    22.0
    5.0
    WATER BASED
    30.09.1993
    2850
    1.20
    21.0
    4.5
    WATER BASED
    01.10.1993
    2850
    1.20
    21.0
    4.5
    WATER BASED
    04.10.1993
    2850
    1.20
    21.0
    4.5
    WATER BASED
    04.10.1993
    2850
    1.20
    23.0
    5.5
    WATER BASED
    30.09.1993
    2850
    1.20
    21.0
    4.5
    WATER BASED
    04.10.1993

  • 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