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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7120/1-5

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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.
    7120/1-5
    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).
    APPRAISAL
    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
    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.
    7120/1-5
    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.
    1644-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.
    66
    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,
    02.03.2017
    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.
    07.05.2017
    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.
    07.05.2019
    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.
    07.05.2019
    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.
    APPRAISAL
    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.
    SHOWS
    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.
    344.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2527.0
    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).
    2527.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    97
    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.
    RØYE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    71° 56' 16'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    20° 14' 58.18'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7982371.09
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    474027.54
    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.
    8070

  • Wellbore history
    General
    Well 7120/1-5 was drilled as an appraisal well on the Gotha discovery in the southern part of the Loppa High in the Barents Sea. The objectives were to test the distribution and quality of the Permo-Triassic conglomerate, test the quality of the Permian reservoir, to reduce the uncertainty of the time-depth conversion and to provide information relating to additional prospectivity in the southern Loppa High area. Planned TD was 2920 m.
    Operations and results
    Appraisal well 7120/1-5 was spudded with the semi-submersible installation Leiv Eiriksson on 2 March 2017 and drilled to TD at 2527 m in the Late Permian Røye Formation. After coring in the 8 ½" section the rate of penetration was very slow, and since the well proved only shows and no moveable hydrocarbons at Gotha reservoir level TD was set earlier than planned. The well was drilled with seawater and hi-vis pills down to 662 m and with Performadril water-based mud from 662 m to TD.
    A 285 metres gross sequence of Permian age spiculitic carbonates with poor reservoir quality was penetrated from 2241.5 m to TD. The Permo-Triassic conglomerate was absent. No pressure gradients could be established due to poor reservoir quality and/or wellbore damage resulting in seal failure. Minor oil shows were observed in siltstones and sandstones of the upper Snadd Formation in the interval from 885 to 955 m. These were typically described as having no odour, no stain, weak yellow direct fluorescence, slow diffuse weak bluish white cut fluorescence, weak cream fluorescent residue, no visible residue. The Røye Formation spiculitic carbonates had intermittent oil shows all through, generally described as no to weak hydrocarbon odour, no to rarely spotty stain, dull greenish yellow to dull yellow direct fluorescence, slow streaming to blooming dull blue white cut fluorescence, dull bluish white to greenish yellow fluorescent residue. No visible residue.
    A total of 156 m of conventional core were cut in 7 cores in the Permian interval from 2243.6 to 2399.77 m with generally excellent recovery. Core-log shifts, in meters, for the seven cores were (in succession from core 1 to core section): -0.64, -0.08, -0.08, -0.29, -0.37, -0.81, -0.81. No fluid sample was taken.
    The well was permanently abandoned on 7 May 2017 as a dry well with shows.
    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]
    670.00
    2529.00

  • 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
    2243.6
    2244.1
    [m ]
    2
    2244.6
    2271.6
    [m ]
    3
    2271.6
    2299.2
    [m ]
    4
    2299.2
    2318.2
    [m ]
    5
    2318.2
    2345.1
    [m ]
    6
    2345.2
    2372.5
    [m ]
    7
    2372.5
    2395.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    151.6
    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
    435.5
    36
    437.5
    0.00
    SURF.COND.
    20
    655.5
    26
    662.0
    1.36
    LOT
    PILOT HOLE
    662.0
    9 7/8
    662.0
    0.00
    INTERM.
    13 3/8
    1115.1
    17 1/2
    0.0
    1.39
    LOT
    INTERM.
    9 5/8
    2210.5
    12 1/4
    2218.0
    1.50
    LOT
    OPEN HOLE
    2527.0
    8 1/2
    2527.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMI PPC MSIP GR JAR
    368
    2505
    MDT GR JAR
    2258
    2349
    MSCT GR
    2221
    2442
    MSCT GR
    2240
    2523
    MWD - CCN ORD OTK SDTK ZTK
    1047
    2218
    MWD - CCN ORD OTK SDTK ZTK ST
    2195
    2527
    MWD - OTK
    369
    662
    MWD - OTK SDTK
    609
    1117
    MWD - OTK SDTK ZTK
    2114
    2243
    UBI HRLA ADT PEX GR JAR
    2211
    2526
    XPT LTS CMR GR JAR
    2211
    2511
    ZOVSP
    384
    2518

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    369
    369
    453
    453
    686
    686
    2240
    2240
    2242
    2242

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    421
    1.05
    50.0
    Bentonite Sweeps
    421
    1.50
    45.0
    Displacement mud
    506
    1.23
    15.0
    Performadril
    580
    1.05
    50.0
    Bentonite Sweeps
    580
    1.50
    35.0
    Displacement mud
    600
    1.23
    16.0
    Performadril
    662
    1.03
    50.0
    SWEEPS
    662
    1.20
    12.0
    PERFORMADRIL
    662
    1.39
    20.0
    Displacement mud
    673
    1.20
    15.0
    PERFORMADRIL
    883
    1.21
    18.0
    PERFORMADRIL
    1086
    1.22
    21.0
    PERFORMADRIL
    1448
    1.23
    21.0
    Performadril
    1585
    1.22
    20.0
    Performadril
    1962
    1.21
    21.0
    Performadril
    2105
    1.22
    22.0
    Performadril
    2110
    1.21
    20.0
    Performadril
    2158
    1.20
    20.0
    Performadril
    2160
    1.15
    15.0
    Performadril
    2217
    1.14
    20.0
    Performadril
    2218
    1.21
    19.0
    Performadril
    2223
    1.14
    20.0
    Performadril
    2270
    1.15
    18.0
    Performadril
    2316
    1.15
    17.0
    Performadril
    2527
    1.15
    15.0
    Performadril