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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2/6-6 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.
    2/6-6 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
    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
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    Main area
    Name of the area on the Norwegian Continental Shelf where the wellbore is located. Legal values: BARENTS SEA, NORWEGIAN SEA, NORTH SEA.
    NORTH SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    2/6-6
    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.
    MOL 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.
    1725-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.
    67
    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,
    13.11.2018
    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.
    18.01.2019
    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.
    18.01.2021
    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.
    18.01.2019
    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.
    18.01.2021
    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.
    53.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    69.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3843.0
    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).
    3625.0
    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.
    PERMIAN
    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.
    ROTLIEGEND GP
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 30' 40.73'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 54' 49.22'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6263503.05
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    556230.95
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    31
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    8560

  • Wellbore history
    General
    Well 2/6-6 S was drilled to test the Oppdal and Driva prospects the east side of the Mandal High in the North Sea. The primary objectives were to test the oil potential in the Paleocene Oppdal submarine sandstone reservoir (Borr Member), and in the Permian aeolian reservoir (Auk Formation) in the Rotliegend Driva prospect.
    Operations and results
    A 9 7/8” pilot hole was drilled to 1012 m due to a slight shallow gas warning between 391 m and 494 m. No obvious shallow gas was encountered here, nor below 500 m.
    Wildcat well 2/6-6 S was spudded with the jack-up installation Rowan Viking on 13 November 2018 and drilled to TD at 3843 m (3628 m TVD) m in the Permian Rotliegend Group. Severe losses were experienced while drilling at 3670 m. The well was drilled with seawater and sweeps down to 1014 m  m and with EMS-4600 oil-based mud from 1014 m to TD.
    The Paleocene Borr Member target (Intra-Våle Formation sandstone) was penetrated from 2908 to 2949 m (2864 to 2898 m TVD). It consisted of sandstone with a layer of claystone close to the top. Three LWD stethoscope pressure points showed a water gradient below the claystone and lack of pressure communication across the claystone. The Borr Member was water bearing. The cored section had weak shows in the form of cut fluorescence and a weak residue, but no direct fluorescence.
    Three meters of the Kupferschiefer Formation source rock was penetrated from 3677 to 3680 m. Geochemical samples from this unit showed TOC up to 5.8% and a Hydrogen Index of 350 mg HC/g TOC. Vitrinite reflectance and Tmax indicated pre-oil to earliest oil window maturity at this depth.
    The Permian Auk Formation target (Rotliegend Gp) was penetrated from 3680 to 3808 m (3495 to 3600 m TVD). It was expected as a Sandstone succession, however the cuttings proved to be composed of siltstone with local limestone stringers. Auk had weak shows on sidewall cores from 3788 to 3802 m, described with no direct fluorescence, cut fluorescence and a weak residue.
    One conventional core was taken in the target Borr sandstone member from 2910 to 2940 m with 100% recovery. No fluid sample was taken.
    The well was permanently abandoned on 18 January 2019 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]
    190.00
    3843.00

  • Cores at the Norwegian Offshore Directorate
    Cores at the Norwegian Offshore Directorate
    Comments
    B-cutt på plass SS-13-A.
    Cores at the Norwegian Offshore Directorate
    Core sample number
    Core sample - top depth
    Core sample - bottom depth
    Core sample depth - uom
    1
    2910.0
    2940.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    30.0
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • 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
    181.0
    36
    184.0
    0.00
    SURF.COND.
    20
    1009.0
    26
    1014.0
    1.96
    FIT
    INTERM.
    13 3/8
    2002.6
    17 1/2
    2008.0
    1.82
    FIT
    INTERM.
    2008.0
    0.0
    0.00
    INTERM.
    9 5/8
    2837.6
    12 1/4
    2846.0
    1.90
    FIT
    LINER
    7
    3651.0
    8 1/2
    3670.0
    1.67
    FIT
    OPEN HOLE
    3843.0
    6
    3843.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT TLD HGNS GR
    3651
    3838
    DU OBMI PPC SC GR
    3651
    3755
    LWD - DI
    122
    184
    LWD - GR ECD DEN RES NEU DI PR S
    2809
    3663
    LWD - GR RES DI
    122
    184
    LWD - GR RES DI
    184
    958
    LWD - GR RES DI NEU DEN SON
    2002
    2843
    LWD - GR RES DI SON
    184
    1004
    LWD - GR RES DI SON
    1009
    2005
    LWD - GR RES ECD PRES DI
    3651
    3841
    MSCT
    3675
    3833
    VSI4
    161
    3575

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    125
    1.03
    Water
    184
    1.20
    Water
    184
    1.39
    Water
    409
    1.20
    Water
    748
    1.03
    Water
    936
    1.12
    Water
    1014
    1.45
    Oil
    1014
    1.20
    Water
    1880
    1.45
    Oil
    2463
    1.64
    Oil
    2463
    1.45
    Oil
    2741
    1.64
    Oil
    3551
    1.45
    Oil
    3670
    1.47
    Oil
    3670
    1.64
    Oil
    3843
    1.45
    Oil

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    2910.62
    [m ]
    2912.62
    [m ]
    2914.33
    [m ]
    2915.28
    [m ]
    2915.50
    [m ]
    2916.30
    [m ]
    2917.30
    [m ]
    2918.16
    [m ]
    2919.30
    [m ]
    2919.75
    [m ]
    2920.65
    [m ]
    2921.25
    [m ]
    2922.02
    [m ]
    2923.65
    [m ]
    2924.50
    [m ]
    2925.45
    [m ]
    2926.25
    [m ]
    2927.50
    [m ]
    2928.60
    [m ]
    2929.95
    [m ]
    2930.50
    [m ]
    2931.45
    [m ]
    2932.50
    [m ]
    2933.50
    [m ]
    2934.45
    [m ]
    2935.50
    [m ]
    2936.50
    [m ]
    2937.50
    [m ]
    2938.67
    [m ]
    2937.70
    [m ]
    3677.00
    [m ]
    3678.00
    [m ]
    3788.00
    [m ]
    3796.00
    [m ]
    3802.00
    [m ]
    3807.00
    [m ]
    3809.00
    [m ]
    3817.00
    [m ]
    3825.10
    [m ]
    3833.00
    [m ]