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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6406/2-9 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.
    6406/2-9 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.
    NORWEGIAN SEA
    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.
    6406/2-9
    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.
    Equinor Energy 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.
    1726-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.
    105
    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,
    03.10.2018
    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.
    15.01.2019
    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.
    15.01.2021
    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.
    15.01.2019
    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.
    15.01.2021
    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.
    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.
    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.
    TOFTE 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
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    38.6
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    278.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4983.0
    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).
    4919.0
    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.
    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.
    TILJE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    64° 48' 18.22'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    6° 26' 51.08'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7189352.45
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    378776.59
    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.
    8562

  • Wellbore history
    Well 6406/2-9 S was drilled to test the Ragnfrid Nord prospect on the Halten Terrace in the Norwegian Sea. The primary exploration target for the well was to prove petroleum in Middle to Lower Jurassic reservoir rocks (in the Garn and Ile formation and in the Tofte formation, respectively). The secondary exploration target was to prove petroleum in Upper Cretaceous reservoir rocks (the Lange formation) and in the Lower Jurassic (the Tilje formation), in the event of discovery in the overlying Tofte formation.
    Operations and results
    Wildcat well 6406/2-9 S was spudded with the semi-submersible installation West Phoenix on 3 October 2018 and drilled to TD at 4983 m (4919 m TVD) in the Early Jurassic Tilje Formation. The well was drilled with seawater and hi-vis pills down to 1515 m, with Innovert oil-based mud from 1515 m to 3429 m, and with non-aqueous BaraECD mud from 3429 m to TD.
    In the primary exploration target, the well encountered a gas/condensate column of about 10 metres in the Tofte formation with moderate reservoir properties. A gas-water contact was assessed at 4737 m (4689 m TVD) and oil shows (direct fluorescence and visible cut) continued throughout the cored section to 4764 m. The entire Tofte formation totals about 140 metres, of which 120 m sandstone of poor to moderate reservoir quality are effective reservoir rocks. The cores documented a deformation/fault zone in the upper part of Tofte. The Garn and Ile formations had about 75 and 65 metres effective reservoir rock respectively, mainly with poor to moderate reservoir quality. Both formations are water bearing. In the secondary exploration target in the Lange formation, the well encountered several one to five-metre thick gas-bearing sandstone layers with poor reservoir quality in the interval 4266 to 4306 m. The uppermost layer has a three-metre gas column. This interval also had oil shows in the form of cut fluorescence. The upper part of the Tilje formation is about 105 metres, whereof 75 metres are effective reservoir rocks with water bearing sandstones, mainly with poor reservoir quality. There were no oil shows in the well apart from those mentioned in the Lange and Tofte formations
    Two cores were cut in the Tofte Formation. Core #1 was cut from 4743 to 4762 m with 98.4% recovery. Core 2 was cut from 4762 to 4764 m with 59.5% recovery. MDT fluid samples were taken in the Tofte Formation at 4737.4 m (condensate) and 4753.2 m (water). The condensate samples were contaminated ca 40% with mud.
    The well was permanently abandoned on 15 January 2019 as a gas/condensate discovery 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]
    1520.00
    4982.00

  • 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
    4743.0
    4761.7
    [m ]
    2
    4762.0
    4763.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    19.9
    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
    36
    378.0
    42
    381.0
    0.00
    SURF.COND.
    20
    1509.0
    26
    1515.0
    1.77
    FIT
    INTERM.
    14
    3418.0
    17 1/2
    3426.0
    2.00
    FIT
    LINER
    9 7/8
    4369.5
    12 1/4
    4367.0
    2.13
    FIT
    OPEN HOLE
    4983.0
    8 1/2
    4983.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    APS HLDS ECS HNGS CMR
    4375
    4988
    MDT
    4515
    4759
    MDT
    4522
    4954
    MDT
    4700
    4737
    MSCT
    4512
    4904
    MWD - ECO TELE
    4743
    4983
    MWD - PDX5 ARC9 TELE
    382
    1515
    MWD - PDX6 ARC6 SADN8 TELE
    3426
    4367
    MWD - PDX6 ECO STET TELE
    4367
    4743
    MWD - TELE
    317
    382
    MWD L PDX6 ARC9 TELE
    1515
    3426
    QAIT SON SCAN QA GEO
    4330
    4988
    USIT HD SON SCAN ABC
    2790
    4360
    USIT HD SON SCAN ABC
    2790
    4360
    VSI4
    2427
    4795
    XLR
    4721
    4827

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    595
    1.64
    33.0
    Innovert
    1515
    1.58
    42.0
    Innovert
    1529
    1.57
    35.0
    Innovert
    1740
    1.58
    35.0
    Innovert
    2115
    1.58
    32.0
    Innovert
    2310
    1.63
    40.0
    Innovert
    2310
    1.60
    40.0
    Innovert
    2503
    1.63
    40.0
    Innovert
    3262
    1.64
    27.0
    Innovert
    3262
    1.83
    36.0
    Innovert
    3366
    1.63
    40.0
    Innovert
    3426
    1.86
    35.0
    BaraECD
    3426
    1.63
    43.0
    Innovert
    3429
    1.85
    37.0
    BaraECD
    3520
    1.83
    38.0
    Innovert
    3599
    1.85
    39.0
    BaraECD
    3825
    1.88
    42.0
    BaraECD
    3945
    1.83
    42.0
    Innovert
    4054
    1.88
    43.0
    BaraECD
    4156
    1.87
    47.0
    BaraECD
    4320
    1.88
    48.0
    BaraECD
    4368
    1.87
    47.0
    BaraECD
    4368
    1.97
    50.0
    BaraECD
    4505
    1.95
    37.0
    BaraECD
    4505
    1.97
    40.0
    BaraECD
    4630
    1.96
    41.0
    BaraECD
    4762
    1.96
    49.0
    BaraECD
    4983
    1.96
    41.0
    BaraECD
    4983
    1.92
    46.0
    BaraECD