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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7121/1-2 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.
    7121/1-2 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
    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.
    BARENTS SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    7121/1-2
    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.
    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.
    1732-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.
    56
    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,
    06.01.2019
    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.
    02.03.2019
    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.
    01.04.2020
    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.
    02.03.2019
    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.
    01.04.2020
    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.
    315.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3375.0
    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).
    3360.0
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    71° 47' 38.4'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    21° 7' 30.53'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7966176.12
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    504364.31
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    34
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    8608

  • Wellbore history
    General
    Well 7121/1-2 S was drilled to test the Setter and Pointer prospects in the Hammerfest Basin of the Barents Sea. The primary objective was to test the reservoir properties and hydrocarbon potential of the Early Cretaceous Kolmule (Setter prospect) and Knurr (Pointer prospect) formations. The secondary objective was to test the presence and reservoir properties of the Middle Jurassic Stø Formation.
    Operations and results
    Wildcat well 7121/1-2 S was spudded with the semi-submersible installation Leiv Eiriksson on 6 January 2019 and drilled to TD at 3375 m (3360 m TVD) m in the Middle Jurassic Stø Formation. A 9 7/8” pilot hole was drilled from 410 to 806 m. No shallow gas was observed. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 808 m and with High Performance water-based mud with 3.5 – 5% glycol from 808 m to TD.
    The well proved reservoir from 2109 m 2149 m (2093.8 to 2133.8 m TVD) at base Kolmule Formation, but the sandstones were water wet with only weak shows (weak cut and residue fluorescence). Reservoir was also proved in the Knurr Formation with main sands in the interval ca 2794 to 2890 m (2779 to 2875 m TVD). The Knurr Formation sandstones had fair to good oil shows with weak odour, direct fluorescence and cut and residue fluorescence, and oil was sampled in the upper part of the sandiest interval. The Knurr sands were however generally tight due to extensive cementation. Sandstone stringers/sandstones without hydrocarbon shows were encountered in the Hekkingen Formation and in the Stø Formation.
    Two cores were cut. Core 1 was cut from 2795 to 2819.1 m with 99% recovery. The core-log depth shift for this core is 2.46 m. Core 2 was cut from 2826 to 2853 m with 98.3% recovery. The core-log depth shift for this core is 2.94 m.  MDT fluid samples were taken at 2133.92 m (water), 2792.49 m (oil), 2872.78 m (water), 2893.60 m (water), and 2915.00 m (water).
    The well was permanently abandoned on 1 March 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]
    810.00
    3375.00

  • 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
    2795.0
    2818.9
    [m ]
    2
    2826.0
    2852.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    50.4
    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
    406.8
    36
    407.1
    0.00
    SURF.COND.
    20
    800.7
    26
    808.0
    1.30
    LOT
    PILOT HOLE
    806.0
    9 7/8
    806.0
    0.00
    INTERM.
    9 5/8
    2009.2
    12 1/4
    2017.0
    1.58
    LOT
    OPEN HOLE
    3375.0
    8 1/2
    3375.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMI MSIP
    2700
    3370
    FMI MSIP GR
    340
    2798
    HRLA NEXT PEX HNGS
    2376
    3378
    HRLA NEXT PEX HNGS XPT
    0
    0
    MDT
    2133
    2794
    MDT
    2789
    2825
    MDT
    2872
    3360
    MWD - GR PWD RES DIR AC
    407
    806
    MWD - GR RES PWD NEU DEN CAL AC
    2017
    3375
    MWD - PWD GR DIR
    340
    808
    MWD- GR RES PWD DIR AC
    813
    2017
    VSP
    530
    3370
    XL ROCK
    2033
    3374

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    381
    1.05
    20.0
    Bentonite Spud Mud
    381
    1.50
    10.0
    KCL/Gem
    407
    1.05
    29.0
    Bentonite Spud Mud
    407
    1.50
    10.0
    KCL/Gem
    550
    1.05
    34.0
    Bentonite Spud Mud
    550
    1.39
    12.0
    DISPLACEMENT MUD
    615
    1.03
    1.0
    Sea water
    730
    1.20
    15.0
    HP WBM
    795
    1.05
    34.0
    Bentonite Spud Mud
    795
    1.39
    12.0
    DISPLACEMENT MUD
    808
    1.05
    34.0
    Bentonite Spud Mud
    813
    1.20
    21.0
    HP WBM
    1750
    1.24
    21.0
    HP WBM
    2000
    1.20
    16.0
    HP WBM
    2009
    1.24
    22.0
    HP WBM
    2017
    1.24
    15.0
    HP WBM
    2022
    1.24
    15.0
    HP WBM
    2819
    1.24
    18.0
    HP WBM
    3375
    1.24
    22.0
    HP WBM