Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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01.11.2024 - 01:26
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2/7-24

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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.
    2/7-24
    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
    Factmaps in new window
    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.
    2/7-24
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    PC 88 - 389- SP. 1090
    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.
    Phillips Petroleum Company Norway
    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.
    653-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.
    158
    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,
    07.11.1990
    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.
    13.04.1991
    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.
    13.04.1993
    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.
    03.10.2013
    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
    Reentry
    Status whether the wellbore has been re-entered (YES) or not (NO). Re-entered wellbores are not included in the count when wellbores are presented in statistical overviews.
    NO
    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.
    22.3
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    70.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5023.0
    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).
    4986.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    20
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    130
    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.
    LATE 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.
    FARSUND FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 18' 33'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 19' 23.56'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6240675.20
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    519997.70
    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.
    1613

  • Wellbore history
    General
    Well 2/7-24 was drilled on the west Valhall Prospect, a Late Jurassic structure located in the Feda Graben on the west side of the Central Trough near the Skrubbe Fault. The main objective was the Eldfisk Formation sandstones, a mass flow deposit located on the east side of the fault. A secondary objective was sandstones associated with a seismic horizon called the Intra Volgian Marker.
    Operations and results
    Wildcat well 2/7-24 was spudded by the semi submersible rig Ross Isle 7 November 1990 and drilled to TD at 5023 in the Late Jurassic Farsund Formation. No shallow gas was encountered in this well. At ca 3050 m, in the 5 7/8" hole section, the inclination started to increase to a maximum of 20 deg where after the inclination decreased to 12,5 deg at TD. The well was hampered by bad weather, malfunction of BOP, hole problems with loss of mud, and problems with running logging equipment properly. The well was drilled with sea water and hi-vis pills down to 465 m, with ester-based Petrofree mud from 465 m to 3042 m, and with oil based mud from 3042 m to 3388 m. Below 3388 m the mud was switched from oil based to water based in an effort to reduce the mud losses. Water based mud was used down to TD.
    The base Cretaceous unconformity was encountered at 3195 m. The well penetrated 122 m of Mandal Formation and continued through 1706 m of Farsund Formation without reaching its base. Hence an 1828 m thick Late Jurassic section was penetrated, a record at the time of drilling. The Late Jurassic lithology was primarily mudstone with subordinate amounts of thinly bedded sandstone and limestone. The primary objective was encountered approximately at 4069 m, 174 m higher than prognosed. No reservoir quality clastic mass flow deposit was present. The well penetrated some thin sandstones in the interval 4352 m to 4520 m, ca 260 m below the Intra Late Jurassic Marker, but they were discontinuous and not of reservoir quality. The core from this section was bleeding gas throughout with dark brown oil bleeding from a sandstone bed in vicinity of a sandstone bed at 4491.2 m. Mudstones.
    One conventional core was cut in the Farsund Formation from 4483.9 m to 4504.3 m. A total of 84 sidewall cores were attempted, and 35 cores were recovered. No wire line fluid samples were taken.
    The well was permanently abandoned on 13 April 1991 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]
    466.00
    4877.00

  • 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
    14711.0
    14767.2
    [ft ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    17.1
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 4483-4488m
    Core photo at depth: 4488-4493m
    Core photo at depth: 4493-4497m
    Core photo at depth: 4497-4500m
    Core photo at depth:  
    4483-4488m
    4488-4493m
    4493-4497m
    4497-4500m

  • Lithostratigraphy

  • Documents – reported by the production licence (period for duty of secrecy expired)
    Documents – reported by the production licence (period for duty of secrecy expired)
    Document name
    Document format
    Document size [MB]
    pdf
    2.68
    pdf
    26.28
    pdf
    3.35

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    DIL BHC LDL CNL NGL GR AMS
    3922
    5020
    DIL SLS GR CAL AMD
    92
    1518
    DITE LSS CAL GR AMS
    3044
    3304
    DITE SLS GR CAL AMS
    1527
    3047
    DLL GPIT MSFL BHC GR
    3922
    4567
    DLL MSFL BHC GR AMS
    3044
    3922
    FMS GR AMS
    3044
    3927
    LDL CNL GR AMS
    1527
    3049
    LDL CNL NGL AMS
    3044
    3925
    MWD GR
    127
    1525
    OBDT GR AMS
    2651
    3049
    RFT GR
    3084
    3289
    RFT GR
    3289
    3773
    SHDT NGL AMS
    3918
    4949
    VSP
    1066
    3916
    VSP
    3886
    4937

  • 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
    127.0
    36
    128.0
    0.00
    LOT
    INTERM.
    20
    458.0
    26
    464.0
    0.00
    LOT
    INTERM.
    13 3/8
    1525.0
    17 1/2
    1531.0
    1.93
    LOT
    INTERM.
    9 5/8
    3041.0
    12 1/4
    3044.0
    2.09
    LOT
    LINER
    7
    3918.0
    8 1/2
    3923.0
    2.15
    LOT
    OPEN HOLE
    5023.0
    5 7/8
    5023.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    343
    0.19
    WATER BASED
    351
    0.19
    WATER BASED
    465
    1.20
    17.0
    WATER BASED
    1448
    1.37
    34.0
    WATER BASED
    1532
    1.45
    37.0
    WATER BASED
    1738
    1.47
    39.0
    WATER BASED
    2109
    1.67
    50.0
    WATER BASED
    2565
    1.67
    39.0
    WATER BASED
    2888
    1.67
    54.0
    WATER BASED
    2978
    1.70
    54.0
    WATER BASED
    3049
    1.85
    55.0
    WATER BASED
    3086
    1.86
    51.0
    WATER BASED
    3163
    1.88
    51.0
    WATER BASED
    3193
    1.93
    55.0
    WATER BASED
    3209
    1.91
    51.0
    WATER BASED
    3268
    1.91
    51.0
    WATER BASED
    3271
    1.91
    54.0
    WATER BASED
    3298
    1.91
    37.0
    WATER BASED
    3350
    1.99
    44.0
    WATER BASED
    3351
    1.99
    45.0
    WATER BASED
    3364
    1.93
    38.0
    WATER BASED
    3378
    1.93
    78.0
    WATER BASED
    3388
    1.91
    52.0
    WATER BASED
    3415
    1.93
    49.0
    WATER BASED
    3424
    1.95
    40.0
    WATER BASED
    3549
    1.97
    40.0
    WATER BASED
    3575
    1.97
    35.0
    WATER BASED
    3640
    1.97
    22.0
    WATER BASED
    3678
    1.99
    19.0
    WATER BASED
    3774
    1.99
    14.0
    WATER BASED
    3857
    1.99
    16.0
    WATER BASED
    3924
    2.00
    20.0
    WATER BASED
    3960
    1.93
    17.0
    WATER BASED
    3970
    1.93
    17.0
    WATER BASED
    4016
    1.93
    19.0
    WATER BASED
    4078
    1.93
    19.0
    WATER BASED
    4138
    1.93
    20.0
    WATER BASED
    4216
    1.93
    19.0
    WATER BASED
    4270
    1.93
    19.0
    WATER BASED
    4293
    1.93
    18.0
    WATER BASED
    4401
    1.93
    18.0
    WATER BASED
    4501
    1.93
    22.0
    WATER BASED
    4505
    1.93
    19.0
    WATER BASED
    4558
    1.93
    19.0
    WATER BASED
    4606
    1.93
    19.0
    WATER BASED
    4668
    1.95
    19.0
    WATER BASED
    4706
    1.95
    22.0
    WATER BASED
    4729
    1.95
    20.0
    WATER BASED
    4818
    1.95
    19.0
    WATER BASED
    4866
    1.95
    21.0
    WATER BASED
    4888
    1.97
    20.0
    WATER BASED
    4937
    1.95
    20.0
    WATER BASED
    4979
    1.97
    21.0
    WATER BASED
    5023
    1.74
    14.0
    WATER BASED