Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.11.2024 - 09:09
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6507/8-2

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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.
    6507/8-2
    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.
    6507/8-2
    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.
    557-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.
    26
    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,
    15.08.1987
    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.
    09.09.1987
    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.
    09.09.1989
    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
    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.
    29.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    346.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2690.0
    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).
    2690.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1.9
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    76
    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° 20' 18.11'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 26' 15.04'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7247248.94
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    427253.72
    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.
    1076

  • Wellbore history
    General
    Well 6507/8-2 was the second well to be drilled in the block and is located in the Grinda Graben East of the Heidrun Field. The well was designed to drill and test the hydrocarbon potential of a clearly defined structure called the Theta structure. Secondary objectives were to verify the geological model and structural interpretation of the area, and to improve the paleontological, geological and geochemical understanding of the area. TD was planned 50 m into Triassic rocks.
    Operations and results
    Wildcat well 6507/8-2 was spudded with Dyvi offshore semi-submersible rig Dyvi Delta on 15 August 1987 and drilled to TD at 2690 m in Late Triassic rocks of the ÅÅre Formation. The well was drilled with seawater and viscous pills down to 521 m, with KCl/Polymer mud from 521 m to TD.
    The whole of Cretaceous as well as the Late and Middle Jurassic were missing in the well. Early Jurassic shale/siltstone (Ror Formation) was encountered at 1890 m and the Early Jurassic Tilje Formation sandstones was encountered at 1945 m. Three cores were cut. The first was cut in the interval 1894 m to 1915 m in the Ror Formation while the next two recovered 9.5 m from the Tilje Formation. From cores, cuttings and logs the well was found to be dry all through. The well was plugged and abandoned on 9 September 1987 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]
    530.00
    2690.00

  • 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
    1894.0
    1913.9
    [m ]
    3
    1990.5
    1996.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    25.4
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1894-1899m
    Core photo at depth: 1899-1904m
    Core photo at depth: 1904-1909m
    Core photo at depth: 1909-1913m
    Core photo at depth: 1990-1995m
    1894-1899m
    1899-1904m
    1904-1909m
    1909-1913m
    1990-1995m
    Core photo at depth: 1995-1996m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    1995-1996m

  • 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
    448.0
    36
    455.0
    0.00
    LOT
    SURF.COND.
    20
    507.0
    26
    964.0
    1.26
    LOT
    INTERM.
    13 3/8
    1055.0
    17 1/2
    1070.0
    1.55
    LOT
    INTERM.
    9 5/8
    1866.0
    12 1/4
    1881.0
    1.72
    LOT
    OPEN HOLE
    2690.0
    8 1/2
    2690.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL GR
    570
    1054
    CBL VDL GR
    766
    1865
    CDL CN GR
    1865
    2635
    CDL GR
    506
    1060
    CDL GR
    1054
    1880
    DIFL ACL GR
    506
    1060
    DIFL ACL GR
    1054
    1880
    DIFL ACL GR
    1865
    2666
    FMT
    1895
    2096
    FMT
    1898
    2414
    MWD - GR RES DIR
    371
    1881
    MWD - GR RES DIR
    2302
    2690
    RLL
    1881
    2302
    SWC
    1888
    2616
    VSP
    520
    2660

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    375
    375
    1423
    1715
    1715
    1832
    1832
    1865
    1890
    1890
    1945
    2123

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.42

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.89

  • 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
    14.01

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    455
    1.05
    1200.0
    WATER BASED
    18.08.1987
    455
    1.05
    1200.0
    WATER BASED
    19.08.1987
    521
    1.08
    4800.0
    3.0
    WATER BASED
    21.08.1987
    964
    1.15
    1500.0
    4.2
    WATER BASED
    24.08.1987
    1070
    1.17
    1300.0
    3.8
    WATER BASED
    24.08.1987
    1070
    1.18
    1200.0
    3.4
    WATER BASED
    24.08.1987
    1440
    1.18
    1300.0
    4.2
    WATER BASED
    25.08.1987
    1735
    1.36
    1700.0
    5.0
    WATER BASED
    26.08.1987
    1750
    1.23
    1300.0
    3.4
    WATER BASED
    09.09.1987
    1830
    1.45
    2500.0
    4.0
    WATER BASED
    28.08.1987
    1881
    1.45
    2000.0
    3.4
    WATER BASED
    31.08.1987
    1881
    1.45
    2800.0
    5.0
    WATER BASED
    27.08.1987
    1913
    1.23
    1200.0
    3.4
    WATER BASED
    31.08.1987
    1991
    1.23
    1600.0
    3.8
    WATER BASED
    31.08.1987
    2348
    1.23
    1600.0
    4.2
    WATER BASED
    03.09.1987
    2607
    1.23
    1500.0
    3.4
    WATER BASED
    03.09.1987
    2690
    1.23
    1700.0
    3.4
    WATER BASED
    09.09.1987
    2690
    1.23
    1700.0
    3.4
    WATER BASED
    04.09.1987

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1740.0
    [m]
    DC
    PALEO
    1750.0
    [m]
    DC
    PALEO
    1770.0
    [m]
    DC
    PALEO
    1780.0
    [m]
    DC
    PALEO
    1800.0
    [m]
    DC
    PALEO
    1818.0
    [m]
    DC
    PALEO
    1830.0
    [m]
    DC
    PALEO
    1836.0
    [m]
    DC
    PETROSTR
    1842.0
    [m]
    DC
    PETROS
    1842.0
    [m]
    DC
    PALEO
    1848.0
    [m]
    DC
    PETROS
    1854.0
    [m]
    DC
    PETROS
    1860.0
    [m]
    DC
    PALEO
    1866.0
    [m]
    DC
    PETROSTR
    1872.0
    [m]
    DC
    PETROS
    1875.0
    [m]
    DC
    PALEO
    1887.0
    [m]
    DC
    PALEO
    1887.0
    [m]
    DC
    PETROSTR
    1888.5
    [m]
    SWC
    PALEO
    1890.0
    [m]
    DC
    PALEO
    1890.0
    [m]
    DC
    PETROSTR
    1893.0
    [m]
    DC
    PALEO
    1894.7
    [m]
    C
    PALEO
    1895.2
    [m]
    C
    PALEO
    1896.0
    [m]
    SWC
    PALEO
    1905.0
    [m]
    DC
    PALEO
    1913.9
    [m]
    C
    PALEO
    1920.0
    [m]
    DC
    PALEO
    1935.0
    [m]
    DC
    PALEO
    1950.0
    [m]
    SWC
    PALEO
    1952.0
    [m]
    SWC
    PALEO
    1968.0
    [m]
    DC
    PALEO
    1983.0
    [m]
    DC
    PALEO
    1996.3
    [m]
    C
    PALEO
    1998.0
    [m]
    DC
    PALEO
    2015.0
    [m]
    SWC
    PALEO
    2018.0
    [m]
    SWC
    PALEO
    2028.0
    [m]
    DC
    PALEO
    2040.0
    [m]
    DC
    PALEO
    2058.0
    [m]
    DC
    PALEO
    2070.0
    [m]
    DC
    PALEO
    2088.0
    [m]
    DC
    PALEO
    2100.0
    [m]
    DC
    PALEO
    2123.0
    [m]
    DC
    PALEO
    2130.0
    [m]
    DC
    PALEO
    2148.0
    [m]
    DC
    PALEO
    2160.0
    [m]
    DC
    PALEO
    2178.0
    [m]
    DC
    PALEO
    2196.0
    [m]
    DC
    PALEO
    2211.0
    [m]
    DC
    PALEO
    2232.0
    [m]
    DC
    PALEO
    2247.0
    [m]
    DC
    PALEO
    2262.0
    [m]
    DC
    PALEO
    2277.0
    [m]
    DC
    PALEO
    2292.0
    [m]
    DC
    PALEO
    2307.0
    [m]
    DC
    PALEO
    2322.0
    [m]
    DC
    PALEO
    2337.0
    [m]
    DC
    PALEO
    2354.5
    [m]
    SWC
    PALEO
    2356.5
    [m]
    SWC
    PALEO
    2363.0
    [m]
    SWC
    PALEO
    2382.0
    [m]
    DC
    PALEO
    2397.0
    [m]
    DC
    PALEO
    2412.0
    [m]
    DC
    PALEO
    2427.0
    [m]
    DC
    PALEO
    2442.0
    [m]
    DC
    PALEO
    2457.0
    [m]
    DC
    PALEO
    2472.0
    [m]
    DC
    PALEO
    2487.0
    [m]
    DC
    PALEO
    2502.0
    [m]
    DC
    PALEO
    2517.0
    [m]
    DC
    PALEO
    2532.0
    [m]
    DC
    PALEO
    2547.0
    [m]
    DC
    PALEO
    2559.0
    [m]
    DC
    PALEO
    2577.0
    [m]
    DC
    PALEO
    2592.0
    [m]
    DC
    PALEO
    2607.0
    [m]
    DC
    PALEO
    2613.5
    [m]
    SWC
    PALEO
    2616.0
    [m]
    SWC
    PALEO
    2622.0
    [m]
    DC
    PALEO
    2637.0
    [m]
    DC
    PALEO
    2652.0
    [m]
    DC
    PALEO
    2667.0
    [m]
    DC
    PALEO
    2682.0
    [m]
    DC
    PALEO