Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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6507/8-3

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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.
    6507/8-3
    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.
    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.
    6507/8-3
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    ST 8102 - 806 SP 770
    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.
    587-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,
    03.09.1988
    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.
    20.09.1988
    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.
    20.09.1990
    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
    1st level with HC, age
    Age of lithostratigraphic unit, 1st level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE. See also Norwegian Offshore Directorate bulletins.
    MIDDLE JURASSIC
    1st level with HC, formation
    Name of lithostartigraphic unit, 1st level, where hydrocarbons were encountered. Shown only for released wells. Examples of legal values: BASEMENT, COOK FM, EKOFISK FM, HEIMDAL FM, SANDNES FM, SOGNEFJORD FM, TARBERT FM, BRENT GP. See also Norwegian Offshore Directorate bulletins.
    GARN FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    29.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    309.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2075.0
    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).
    2075.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.9
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    62
    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° 27' 34.61'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 38' 29.29'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7260540.88
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    437039.71
    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.
    1309

  • Wellbore history
    General
    Well 6507/8-3 was the third in the block, located on the Sør High northeast of the Heidrun Field. The hole was drilled on the alpha-structure, a rotated fault block dipping towards south and west. Jurassic and parts of Triassic is probably eroded. The primary objective of the well was to test the hydrocarbon bearing potential of the previously undrilled alpha structure. The secondary objective was to verify geological model and structural interpretation, to drill the third commitment well in the block, to improve the paleontological, geological and geochemical understanding of the area. Planned TD was in Triassic sediments.
    Operations and results
    Wildcat well 6507/8-3 was spudded with Smedvig Drilling semi-submersible installation West Delta on 3 September 1988 and drilled to TD at 2075 m in Triassic rocks of the Åre Formation. The well was drilled with spud mud down to 558 m, with CMC from 558 m to 1101 m, and with gel/CMC/Ligno from 1101 m to TD. There was no shallow gas. The whole operation went very fast and without problems of any kind and TD was reached in 11 days.
    Both the Eocene to Miocene and the Cretaceous are missing in the well. Top reservoir (Garn Formation) was encountered at 1358 m. It contained a small amount of gas with a gas/water contact at 1362 m. FMT testing at 1361 m showed dry gas consisting of 99% methane, interpreted to be of biogenic origin. Apart from this methane the well was found to be dry based on cuttings, cores, and logs. Two cores were cut in the well. Core 1 was cut between 1367 ? 1380 m (only the lower 1.5 m from the Not Formation recovered) and core 2 in the interval 1396 -1408 m in the Ile/Ror Formations.
    The well was plugged and abandoned completed 20 September 1988 at as dry.
    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]
    560.00
    2075.00

  • 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
    1378.9
    1380.0
    [m ]
    2
    1395.0
    1406.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    12.9
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1378-1380m
    Core photo at depth: 1396-1401m
    Core photo at depth: 1401-1406m
    Core photo at depth: 1406-1407m
    Core photo at depth:  
    1378-1380m
    1396-1401m
    1401-1406m
    1406-1407m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1250.0
    [m]
    DC
    STRAT
    1260.0
    [m]
    DC
    STRAT
    1275.0
    [m]
    SWC
    STRAT
    1288.0
    [m]
    SWC
    STRAT
    1299.0
    [m]
    DC
    STRAT
    1308.0
    [m]
    DC
    STRAT
    1326.0
    [m]
    DC
    STRAT
    1332.0
    [m]
    DC
    STRAT
    1350.0
    [m]
    DC
    STRAT
    1355.0
    [m]
    SWC
    STRAT
    1362.0
    [m]
    DC
    STRAT
    1363.0
    [m]
    SWC
    STRAT
    1371.0
    [m]
    DC
    STRAT
    1380.0
    [m]
    DC
    STRAT
    1396.0
    [m]
    C
    STRAT
    1398.8
    [m]
    C
    STRAT
    1402.5
    [m]
    C
    STRAT
    1405.9
    [m]
    C
    STRAT
    1406.8
    [m]
    C
    STRAT
    1419.0
    [m]
    DC
    STRAT
    1431.0
    [m]
    DC
    STRAT
    1437.0
    [m]
    DC
    STRAT
    1443.0
    [m]
    DC
    STRAT
    1445.0
    [m]
    SWC
    STRAT
    1449.0
    [m]
    DC
    STRAT
    1455.0
    [m]
    DC
    STRAT
    1461.0
    [m]
    DC
    STRAT
    1467.0
    [m]
    DC
    STRAT
    1473.0
    [m]
    DC
    STRAT
    1479.0
    [m]
    DC
    STRAT
    1485.0
    [m]
    DC
    STRAT
    1491.0
    [m]
    DC
    STRAT
    1512.0
    [m]
    DC
    STRAT
    1530.0
    [m]
    DC
    STRAT
    1545.0
    [m]
    SWC
    STRAT
    1566.0
    [m]
    DC
    STRAT
    1584.0
    [m]
    DC
    STRAT
    1620.0
    [m]
    SWC
    STRAT
    1632.0
    [m]
    DC
    STRAT
    1644.0
    [m]
    DC
    STRAT
    1656.0
    [m]
    DC
    STRAT
    1668.0
    [m]
    DC
    STRAT
    1677.0
    [m]
    SWC
    STRAT
    1680.0
    [m]
    DC
    STRAT
    1716.0
    [m]
    DC
    STRAT
    1728.0
    [m]
    DC
    STRAT
    1740.0
    [m]
    DC
    STRAT
    1750.0
    [m]
    SWC
    STRAT
    1764.0
    [m]
    DC
    STRAT
    1776.0
    [m]
    DC
    STRAT
    1788.0
    [m]
    DC
    STRAT
    1808.0
    [m]
    SWC
    STRAT
    1824.0
    [m]
    DC
    STRAT
    1836.0
    [m]
    DC
    STRAT
    1848.0
    [m]
    DC
    STRAT
    1860.0
    [m]
    DC
    STRAT
    1872.0
    [m]
    DC
    STRAT
    1875.0
    [m]
    SWC
    STRAT
    1884.0
    [m]
    DC
    STRAT
    1896.0
    [m]
    DC
    STRAT
    1908.0
    [m]
    DC
    STRAT
    1915.0
    [m]
    SWC
    STRAT
    1932.0
    [m]
    DC
    STRAT
    1944.0
    [m]
    DC
    STRAT
    1956.0
    [m]
    DC
    STRAT
    1968.0
    [m]
    DC
    STRAT
    1975.0
    [m]
    SWC
    STRAT
    1992.0
    [m]
    DC
    STRAT
    2006.0
    [m]
    DC
    STRAT
    2016.0
    [m]
    DC
    STRAT
    2026.0
    [m]
    SWC
    STRAT
    2040.0
    [m]
    DC
    STRAT
    2052.0
    [m]
    DC
    STRAT
    2064.0
    [m]
    DC
    STRAT
    2075.0
    [m]
    DC
    STRAT

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    338
    338
    1245
    1334
    1334
    1353
    1353
    1358
    1358
    1379
    1386
    1402
    1402
    1446
    1542

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.30

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.48

  • 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
    12.28

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL GR
    338
    1085
    CDL CN GR
    1085
    2071
    DIFL ACL GR CDL
    325
    945
    DIFL BHC GR
    1085
    2074
    DIPLOG
    1085
    2073
    FMT
    1361
    1361
    FMT
    1368
    1395
    MWD - GR RES DIR
    397
    2072
    RSCT
    1163
    2026
    SWC
    1235
    2026
    VSP
    480
    2070

  • 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
    399.0
    36
    567.0
    0.00
    LOT
    SURF.COND.
    20
    552.0
    26
    722.0
    1.25
    LOT
    INTERM.
    13 3/8
    1086.0
    17 1/2
    1100.0
    1.83
    LOT
    OPEN HOLE
    2075.0
    12 1/4
    2075.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    557
    1.15
    11.0
    3.0
    WATER BASED
    07.09.1988
    557
    1.15
    7.0
    4.0
    WATER BASED
    08.09.1988
    1100
    1.16
    9.0
    3.0
    WATER BASED
    09.09.1988
    1100
    1.15
    9.0
    3.0
    WATER BASED
    12.09.1988
    1300
    1.20
    10.0
    7.0
    WATER BASED
    12.09.1988
    1300
    1.21
    14.0
    5.0
    WATER BASED
    12.09.1988
    1300
    1.20
    15.0
    3.0
    WATER BASED
    13.09.1988
    1300
    1.21
    20.0
    6.0
    WATER BASED
    14.09.1988
    1300
    1.21
    17.0
    7.0
    WATER BASED
    16.09.1988
    2075
    1.20
    17.0
    7.0
    WATER BASED
    16.09.1988

  • 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
    0.24