Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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21.11.2024 - 01:28
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34/3-2 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.
    34/3-2 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.
    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.
    34/3-2
    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.
    BG Norge 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.
    1282-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.
    67
    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,
    25.10.2009
    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.
    30.12.2009
    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.
    30.12.2011
    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.
    03.01.2012
    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.
    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.
    18.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    409.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4331.0
    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).
    4315.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    10.4
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    148
    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.
    TRIASSIC
    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.
    STATFJORD GP
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 48' 45.06'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 49' 16.33'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6853471.85
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    490577.12
    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.
    6249

  • Wellbore history
    General
    The 34/3-2 S Jordbær Øst well was drilled on the northern fringes of the Tampen Spur and adjacent to BG's recent Jordbær oil discovery. The Jordbær Øst prospect is a down-faulted hanging wall to the Jordbær oil discovery. The primary targets for the Jordbær Øst well was the Lower Jurassic shallow marine Cook Formation and the secondary target was the fluvial dominated Statfjord Formation. The two reservoir targets are separated by Jurassic Claystone and siltstones of the Dunlin Group. The well location and path was planned to avoid shallow gas.
    Operations and results
    Wildcat well 34/3-2 S was spudded with the semi-submersible installation West Alpha on 25 October 2009 and drilled to TD in the Eriksson Member of the Statfjord Formation at 4331 m (4315.3 m TVD). The well started with a 9 7/8" pilot hole to 1028 m to check for shallow gas. No shallow gas was seen. The main well was drilled vertical down to the end of the 17 1/2" section, deviated to 10 degrees through the 12 1/4" section and back to vertical before the 8 1/2" section, to hit the Cook and Statfjord reservoir targets. The well was drilled with seawater and hi-vis sweeps down to 1030 m, with Glydril mud from 1030 m to 2403, with Versatec oil based mud from 2403 to 3882 m, and with Versatherm oil based mud from 3882 m to TD.
    Sandstones belonging to the Cook Formation were encountered dry at 4011.7 m (3990.0 m TVD). The Cook Formation sandstones had an average porosity of 17.8% net when using a 10% cut off and an average permeability from logs of 9.17 mD. Some parts of the core contain sands with multi-Darcy permeability. The Nansen Member of the upper Statfjord Formation was penetrated at 4273 m (4256 m TVD).The Nansen Member consisted of relatively clean sandstones with minor thin limestone stringers, and it was dry. It had a net thickness of 28.3 m (at 10%) cut-off and an average porosity of 17% net, with an average permeability of 21.4 mD.
    Gas readings while drilling were slightly elevated in the Cook Formation sandstones but no significant fluorescence was seen in the mud. A 27 m core was cut from 4053 to 4080 m. The core had fluorescence that was marginally above the OBM and post well analysis indicated the presence of oil in saturations of around 5 - 30% from Dean Stark measurements in some zones in the core. However, no moveable hydrocarbons were recovered during the extensive MDT programme. MDT water samples were taken at 4285.91 m, 4050.02 m, 4075.47 m, and at 4025 m (dual packer).
    The well was permanently abandoned on 30 December 2009 as a dry well with non-moveable hydrocarbons.
    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]
    1040.00
    4329.00

  • 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
    4053.0
    4079.9
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    26.9
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Oil samples at the Norwegian Offshore Directorate
    Oil samples at the Norwegian Offshore Directorate
    Test type
    Bottle number
    Top depth
    MD [m]
    Bottom depth
    MD [m]
    Fluid type
    Test time
    Samples available
    DST
    0.00
    0.00
    WATER
    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
    492.0
    36
    492.0
    0.00
    LOT
    SURF.COND.
    20
    1024.0
    26
    1030.0
    0.00
    LOT
    INTERM.
    13 3/8
    2396.0
    17 1/2
    2403.0
    1.67
    LOT
    INTERM.
    9 5/8
    3876.0
    12 1/4
    3882.0
    1.93
    LOT
    OPEN HOLE
    4331.0
    8 1/2
    4331.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT APS LDS GR
    3789
    4342
    CMR
    3878
    4336
    ECS HNGS
    3826
    4335
    LWD - GR RES NEU DEN ECS
    3860
    4331
    LWD - GR RES SON
    422
    2403
    LWD - GR RES SON NEU DEN
    2380
    3882
    MDT
    4010
    4040
    MDT
    4045
    4290
    MSCT
    3495
    4300
    OBMI DSI
    3798
    4344
    VSI
    479
    4310

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1030
    1.37
    24.0
    KCl/Poly/Glycol
    1030
    1.37
    27.0
    KCl/Poly/Glycol
    1377
    1.37
    26.0
    KCl/Poly/Glycol
    2225
    1.39
    23.0
    KCl/Poly/Glycol
    2303
    1.37
    25.0
    KCl/Poly/Glycol
    2403
    1.38
    26.0
    KCl/Poly/Glycol
    2764
    1.57
    48.0
    Versamud
    3234
    1.61
    43.0
    Versamud
    3859
    1.66
    45.0
    Versamud
    3882
    1.88
    36.0
    Versamud
    3882
    1.91
    35.0
    Versamud
    3882
    1.87
    35.0
    Versamud
    3882
    1.70
    44.0
    Versamud
    3894
    1.92
    41.0
    Versamud
    4053
    1.92
    41.0
    Versamud
    4331
    1.92
    50.0
    Versamud