Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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23.07.2024 - 01:26
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6507/4-2 S

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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.
    6507/4-2 S
    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
    Press release
    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
    Field
    Name of the field the wellbore is related to.
    Discovery
    Name of the discovery the wellbore is related to.
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    6507/4-2
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    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.
    Wintershall Dea Norge 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.
    1847-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.
    89
    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,
    20.02.2021
    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.
    19.05.2021
    Plugged and abondon date
    Date when the P&A-operations of the wellbore was finished, as reported by the operator to the Norwegian Offshore Directorate throught DDRS (Daily Drilling Reporting System). Only applied once pr. wellhead/surface location.
    19.05.2021
    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.
    19.05.2023
    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.
    12.09.2023
    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.
    OIL/GAS/CONDENSATE
    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.
    YES
    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
    2nd level with HC, age
    Age of lithostratigraphic unit, 2nd level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE.
    LATE CRETACEOUS
    2nd level with HC, formation
    Name of lithostartigraphic unit, 2nd 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.
    LANGE FM
    3rd level with HC, age
    Age of lithostratigraphic unit, 3rd level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE.
    LATE CRETACEOUS
    3rd level with HC, formation
    Name of lithostartigraphic unit, 3rd 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.
    LYSING FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    32.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    450.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4485.0
    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).
    4430.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    16.7
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    162
    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 JURASSIC
    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.
    ROR FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    65° 32' 23.77'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 11' 22.41'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7270017.61
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    416357.57
    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.
    9251
  • Wellbore history

    General
    Well 6507/4-2 S was drilled to test the Dvalin prospect on the Revfallet Fault Complex between the Victoria and rfugl discoveries in the Norwegian Sea. The primary objective for the well was to prove hydrocarbons in the Middle Jurassic Garn Formation in the Fangst Group. The secondary objectives were to prove hydrocarbons in the Cretaceous Lysing and Lange Formations.
    Operations and results
    Wildcat well 6507/4-2 S was spudded with the semi-submersible installation Deepsea Aberdeen on 20 February 2021 and drilled to TD at 4485 m (4430 m TVD) m in the early Jurassic Ror Formation. Non-production time was 19.7 days (22%) mainly due to ruptured BOP control Multiplex cable during a WOW period. This occurred during logging operations in the 8 1/2" section. The well was drilled with seawater and hi-vis pills down to 1500 m and with Innovert NS oil-based mud from 1500 m to TD.
    The well proved gas in the Garn Fm, with no proven gas-water contact, it proved gas/condensate in the Lysing Fm with gas-water contact at 2923.5 m (2915 m TVD), and it proved gas and oil in four differently pressured sand layers in the Lange Fm. No hydrocarbon contacts were identified in the Lange Formation. Shows were observed in the hydrocarbon bearing sands in the Lange and Garn formations. The deepest show in the Garn Formation was at 4363 m. In the Lysing Formation no shows were observed.
    Three cores were cut in succession from 4262.4 to 4326.7 m in the Garn Formation. Total recovery was 100%. MDT fluid samples were taken in the Lysing Formation at 2897.5 m (gas condensate), 2909.2 (gas condensate) and 2961.5 m (water), in the Lange Formation at 3597.6 m (wet gas), 3701.6 m (oil) and 3822.3 m (oil), and in the Garn Formation at 4264 m (wet gas), 4268.6 m (wet gas) and 4326.6 m (wet gas).
    The well was permanently abandoned on 19 May 2021 as an oil and gas discovery.
    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]
    1510.00
    4485.00
  • 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
    4262.4
    4273.6
    [m ]
    2
    4274.0
    4282.0
    [m ]
    3
    4282.0
    4326.7
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    63.9
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES
  • Lithostratigraphy

  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT PEX HNGS MSIP NGI PPC
    2832
    4020
    CMR XPT NEXT
    2850
    3900
    CMR XPT NEXT
    4236
    4455
    ECS
    4327
    4327
    LWD - ABG DGR EWR PWD PCDC
    1500
    2841
    LWD - AFR ABG PCDC DGR ADR ALD -
    2841
    4029
    LWD - COREA1
    4262
    4274
    LWD - COREA2
    4274
    4282
    LWD - COREA3
    4282
    4326
    LWD - CTN XBAT XCAL PWD
    2841
    4029
    LWD - DGR EWR PWD PCDC
    544
    1500
    LWD - EWR DGR DM PWD
    4029
    4262
    LWD - EWR DGR DM PWD ALD CTN
    4326
    4485
    LWD - HO
    482
    544
    LWD - PCDC PWD
    4029
    4029
    MDT
    2897
    3900
    MDT
    3822
    4020
    MDT
    4327
    4327
    MDT TLC
    4264
    4290
    QAIT PPC ADT APS HLDS HNGS
    3843
    4487
    QGEO SS PPC
    4000
    4472
    SWC
    4263
    4365
    SWC
    4330
    4365
    SWC SGT MSCT
    2832
    4020
    SWC SGT MSCT
    2832
    4020
    USIHD CBL
    2162
    4025
    VSP
    911
    4355
  • 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
    541.0
    36
    544.0
    0.00
    INTERM.
    13 3/8
    1454.5
    17 1/2
    1500.0
    1.64
    FIT
    INTERM.
    9 7/8
    2832.0
    12 1/4
    2841.0
    1.77
    LOT
    LINER
    7 5/8
    4028.0
    9 1/4
    4029.0
    2.16
    FIT
    OPEN HOLE
    4485.0
    6 1/2
    4485.0
    0.00
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    360
    1.03
    1.0
    3.8
    Sea Water
    544
    1.49
    19.0
    8.6
    Water Base
    1382
    1.67
    36.0
    4.7
    INNOVERT
    1452
    1.49
    26.0
    9.5
    INNOVERT
    1503
    1.29
    18.0
    10.0
    Water Base
    1650
    1.51
    33.0
    9.0
    Innovert
    2020
    1.55
    40.0
    11.9
    INNOVERT
    2505
    1.67
    41.0
    3.3
    INNOVERT
    2562
    1.55
    33.0
    11.4
    INNOVERT
    2820
    1.55
    34.0
    10.0
    INNOVERT
    2841
    1.55
    33.0
    10.0
    INNOVERT
    2845
    1.59
    30.0
    7.1
    INNOVERT
    2870
    1.58
    29.0
    7.1
    INNOVERT
    2925
    1.57
    29.0
    5.7
    Innovert
    3041
    1.61
    29.0
    6.2
    Innovert
    3095
    1.64
    28.0
    7.6
    Innovert
    3098
    1.64
    28.0
    5.7
    Innovert
    3690
    1.65
    31.0
    4.7
    INNOVERT
    4029
    1.67
    28.0
    8.6
    INNOVERT
    4485
    1.67
    40.0
    7.6
    INNOVERT