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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6307/1-1 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.
    6307/1-1 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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    6307/1-1
    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.
    Lundin Norway 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.
    1717-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.
    72
    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,
    18.10.2018
    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.
    28.12.2018
    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.
    28.12.2020
    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.
    28.12.2018
    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.
    28.12.2020
    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.
    25.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    236.5
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4114.0
    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).
    3796.0
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    63° 55' 15.83'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    7° 18' 10.11'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7089500.42
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    416755.81
    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.
    8523

  • Wellbore history
    General
    Well 6307/1-1 S was drilled to test the Silfari prospect in the Froan Basin in the Norwegian Sea. The primary exploration target for the well was to investigate the reservoir properties and the petroleum potential in Permian carbonate rocks (equivalent to the Wegner Halvø formation in the Late Permian at East Greenland). The secondary exploration target was to collect data for potential reservoirs in the Middle to Early Jurassic (the Fangst and Båt groups).
    Operations and results
    Wildcat well 6307/1-1 S was spudded with the semi-submersible installation Leiv Eiriksson on 18 October 2018 and drilled to TD at 4114 m in igneous rocks. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 329 m, with KCl/Polymer/GEM water-based mud from 329 to 923 m, with Baracarb High Performance water-based mud from 923 to 3119 m and with Baracarb HTHP water-based mud from 3119 m to TD.
    The well encountered good reservoir sands in the targeted Jurassic formation but with no hydrocarbon indications. Pressure data showed a clear water gradient of 1.02 g/cc. in the Jurassic. The well penetrated top Triassic Grey Beds at 2775 m (2610.3 m TVD) and top Red Beds at 2839 m (2665.7 m TVD). The deepest section below 3385 m (3146.5 m TVD) consists of undated igneous rocks. The deep Permian target was thus not present, and no hydrocarbons were present in these rocks.
    Numerous weak oil shows in the form of visible and/or fluorescing cut were recorded in the well, beginning at 1811 m in the Lange formation. The shows may have been influenced by mineral fluorescence and mud type.
    One core was cut from 3473 to 3482.6 m with 55.2 % recovery. The core to log depth shift is 0.4 m. MDT water samples were taken at 2131.59 m.
    The well was permanently abandoned on 28 December 2018 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]
    340.00
    4114.00

  • 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
    3473.0
    3478.3
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    5.3
    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
    328.8
    42
    328.8
    0.00
    PILOT HOLE
    621.0
    9 7/8
    621.0
    0.00
    SURF.COND.
    20
    915.0
    26
    923.0
    1.56
    LOT
    INTERM.
    13 3/8
    1756.9
    17 1/2
    1765.0
    1.78
    LOT
    INTERM.
    9 7/8
    3112.3
    12 1/4
    3119.0
    1.86
    LOT
    OPEN HOLE
    4114.0
    8 1/2
    4114.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CMR NEXT XPT
    1777
    3087
    FMI MSIP
    1756
    3120
    FMI MSIP
    2960
    4115
    HRLA PEX HNGS
    915
    1758
    HRLA PEX HNGS
    1756
    3080
    HRLA PEX HNGS
    3112
    4107
    MDT
    2131
    2131
    MSCT
    1317
    1667
    MSCT
    1807
    3076
    MSCT
    1984
    2382
    MWD LWD - GR PWD RES DIR AC
    296
    914
    MWD LWD - PWD GR DIR
    249
    328
    MWD LWD - RES GR PWD CAL DEN N A
    1684
    4113
    MWD LWD - RES INC GR PWD DIR AC
    860
    1765
    VSI
    2541
    4100
    VSP
    1200
    3075
    XLR
    3154
    4090
    XLR
    3312
    3709
    XPT NEXT CMR
    3112
    4105

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    235
    1.20
    15.0
    KCL/Gem
    261
    1.50
    30.0
    KCL/Gem
    620
    1.03
    Sea water
    725
    1.45
    27.0
    HT WBM
    763
    1.24
    18.0
    KCL/Gem/Polymer
    885
    1.45
    26.0
    High Performance WBM
    923
    1.45
    30.0
    High Performance WBM
    923
    1.26
    18.0
    KCL/Gem/Polymer
    1140
    1.45
    25.0
    High Performance WBM
    1677
    1.45
    25.0
    High Performance WBM
    1765
    1.39
    27.0
    High Performance WBM
    1765
    1.45
    23.0
    High Performance WBM
    2051
    1.40
    27.0
    High Performance WBM
    2292
    1.39
    29.0
    High Performance WBM
    2432
    1.40
    27.0
    High Performance WBM
    2540
    1.39
    29.0
    High Performance WBM
    2886
    1.45
    25.0
    HT WBM
    2886
    1.30
    18.0
    HT WBM
    2969
    1.39
    29.0
    High Performance WBM
    3119
    1.30
    20.0
    HT WBM
    3119
    1.40
    20.0
    High Performance WBM
    4113
    1.30
    18.0
    HT WBM