Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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19.06.2024 - 01:33
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34/3-1 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.
    34/3-1 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
    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
    Field
    Name of the field the wellbore is related to.
    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.
    34/3-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    inline 5174 & crossline 3090
    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.
    1180-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.
    136
    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,
    28.04.2008
    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.
    10.09.2008
    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.
    10.09.2010
    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.
    23.12.2010
    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.
    OIL
    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.
    YES
    1st level with HC, age
    Age of lithostratigraphic unit, 1st level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE. See also Norwegian Offshore Directorate bulletins.
    EARLY JURASSIC
    1st level with HC, formation
    Name of lithostartigraphic unit, 1st level, where hydrocarbons were encountered. Shown only for released wells. Examples of legal values: BASEMENT, COOK FM, EKOFISK FM, HEIMDAL FM, SANDNES FM, SOGNEFJORD FM, TARBERT FM, BRENT GP. See also Norwegian Offshore Directorate bulletins.
    COOK FM
    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.
    410.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4221.0
    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).
    4081.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    24.3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    142
    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 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' 46.49'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 46' 47.16'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6853522.80
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    488393.54
    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.
    5811
  • Wellbore history

    General
    The Jordbær well 34/3-1 S was drilled on the north eastern fringes of Tampen Spur on the Norwegian Continental Shelf. It was planned as a deviated exploration well with a dry hole TD case at 4228 m /4089 m TVD in the Jordbær Central target formation. Due to possible high pressure and temperature within the reservoir, the 8 1/2" section was planned to be drilled according to HPHT procedures.
    Operations and results
    Wildcat well 34/3-1 S was spudded with the semi-submersible installation Bredford Dolphin on 28 April 2008 and drilled to TD at 4221 m (4081.6 m TVD) in Late Triassic sediments of the Statfjord Formation. The well was drilled without significant technical problems down to TD in the 17 1/2" section at 2196 m. Due to wellbore instability and consequential stuck pipe at this point, the well was technically sidetracked (34/3-1 ST2) below the 20" casing shoe. The well was drilled with seawater and sweeps down to 968 m, with Performadril water based mud with GEM GP from 968 m to 2210 m, and with XP-07 oil based mud from 2210 m to TD.
    The well drilled from the Early Jurassic Cromer Knoll Group directly into the Early Jurassic Dunlin Group at 3774 m. The Middle to Late Jurassic successions were missing in well position. The well found hydrocarbons in the Early Jurassic Cook Formation. No OWC was seen. After reaching TD a 7" liner was installed and a DST operation performed in the Cook formation, prior to plugging and sidetracking the well to start drilling of well 34/3-1A.
    Two cores were cut in the Cook Formation. Core 1 was cut from 3868m to 3895m, with 23 m of core being recovered. A second core assembly was run and coring continued from 3895m to 3932m. No wire line fluid samples were taken.
    The well was permanently abandoned on 10 September 2008 as an oil discovery.
    Testing
    One DST was performed in the upper Cook Formation at 3866.0 - 3950.5 m (3750.2 - 3832.5 m TVD). The test produced 42789 Sm3 gas and 1239 Sm3 oil /day through a 24/64" choke. The GOR was 35 Sm3/Sm3, the oil density was 0.798 g/cm3, and the gas gravity was 0.795 (air=1) with 2 ppm H2S and 2% CO2. The maximum temperature recorded in the final flow was 134 deg C.
  • 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]
    980.00
    4221.00
  • 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
    3868.0
    3891.3
    [m ]
    2
    3895.0
    3932.3
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    60.6
    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
    OIL
    YES
    MDT
    3950.48
    3866.00
    OIL
    YES
  • Lithostratigraphy

  • Composite logs

    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.60
  • Geochemical information

    Geochemical information
    Document name
    Document format
    Document size [MB]
    txt
    0.00
    txt
    0.00
    txt
    0.11
    txt
    0.04
  • Drill stem tests (DST)

    Drill stem tests (DST)
    Test number
    From depth MD
    [m]
    To depth MD
    [m]
    Choke size
    [mm]
    1.0
    3866
    3950
    9.5
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    134
    Drill stem tests (DST)
    Test number
    Oil
    [Sm3/day]
    Gas
    [Sm3/day]
    Oil density
    [g/cm3]
    Gas grav. rel.air
    GOR
    [m3/m3]
    1.0
    1239
    42789
    0.798
    0.795
    35
  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    EWR P4 PWD DGR DDS BAT GP
    2210
    3780
    LWD - DI
    435
    505
    LWD - DI
    505
    968
    LWD - DI GR RES PWD
    435
    966
    PWD AGR EWR BAT DI
    968
    972
    PWD AGR EWR DI
    961
    2210
  • 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
    501.0
    36
    501.0
    0.00
    LOT
    SURF.COND.
    20
    961.0
    26
    968.0
    1.70
    LOT
    INTERM.
    13 3/8
    2203.0
    17 1/2
    2210.0
    1.80
    LOT
    INTERM.
    9 5/8
    3769.0
    12 1/4
    3777.0
    2.04
    LOT
    LINER
    7
    4216.0
    8 1/2
    4221.0
    0.00
    LOT
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    505
    1.03
    Bentonite Spud Mud
    548
    1.03
    Bentonite Spud Mud
    874
    1.04
    Bentonite Spud Mud
    911
    1.50
    33.0
    PERFORMADRIL
    920
    1.28
    23.0
    PERFORMADRIL
    940
    1.35
    28.0
    PERFORMADRIL
    961
    1.35
    25.0
    PERFORMADRIL
    966
    1.03
    Bentonite Spud Mud
    1153
    1.35
    25.0
    PERFORMADRIL
    1412
    1.37
    35.0
    PERFORMADRIL
    1555
    1.37
    36.0
    PERFORMADRIL
    1913
    1.50
    38.0
    PERFORMADRIL
    1984
    1.37
    32.0
    PERFORMADRIL
    2063
    1.50
    45.0
    PERFORMADRIL
    2128
    1.39
    39.0
    PERFORMADRIL
    2150
    1.70
    25.0
    XP-07
    2187
    1.70
    30.0
    XP-07
    2196
    1.50
    48.0
    PERFORMADRIL
    2210
    1.41
    42.0
    PERFORMADRIL
    2213
    1.41
    16.0
    XP-07
    3090
    1.45
    20.0
    XP-07
    3777
    1.70
    31.0
    XP-07
    3800
    1.87
    38.0
    XP-07
    3895
    1.87
    36.0
    XP-07
    3932
    1.87
    35.0
    XP-07
    3968
    1.87
    34.0
    XP-07
    4221
    1.87
    35.0
    XP-07
  • Thin sections at the Norwegian Offshore Directorate

    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    3920.08
    [m ]
    3919.18
    [m ]
    3912.68
    [m ]
    3901.70
    [m ]
    3901.40
    [m ]
    3889.35
    [m ]
    3881.70
    [m ]
    3875.68
    [m ]
    3869.67
    [m ]
    3930.11
    [m ]