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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34/8-2

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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.
    34/8-2
    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
    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.
    34/8-2
    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.
    Norsk Hydro Produksjon 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.
    522-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.
    45
    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,
    04.10.1986
    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.
    17.11.1986
    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.
    17.11.1988
    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.
    21.12.2012
    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.
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    353.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3240.0
    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).
    3239.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    122
    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.
    LUNDE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 22' 10.51'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 31' 36.09'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6804208.51
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    474697.57
    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.
    915

  • Wellbore history
    General
    Well 34/8-2 was drilled ca 5 km east of the 34/8-1 Visund Discovery well in the northern North Sea. It was drilled on the northern compartment of the same structure as the 34/8-1 well, a rotated fault block flanking the Viking Graben. This northern compartment ("A-North") might be separate from the southern by a sealing fault. The main objective of well 34/8-2 was to prove hydrocarbons in the Stafjord Formation of the A-North compartment. The planned TD was ca 50 m into the Triassic Lunde Formation.
    Operations and results
    Wildcat well 34/8-2 was spudded with the semi-submersible installation Polar Pioneer on 4 October 1986 and drilled to TD at 3240 m in the Late Triassic Lunde Formation. The rig had to be moved and the well was re-spudded twice before the 36" hole could be finished. Otherwise no significant problems were encountered in the operations. The well was drilled with seawater and hi-vis pills down to 1205 m and with KCl/polymer mud from 1205 m to TD.
    A unit assigned to the Late Jurassic Draupne Formation was penetrated from 2896 to 2912.5 m. Below Draupne a complete Dunlin Group (Drake-Cook-Burton-Amundsen) was penetrated down to 3001 m where the Statfjord Formation was encountered. The target Statfjord Formation was water bearing, and the only hydrocarbon indications in the well were oil shows on sandstone stringers in the Shetland Formation and weak fluorescence on Draupne Formation claystone
    One core was taken in the well in the upper part of the Statfjord Formation from 3008 - 3020 m. The recovery was 11.75 meters, 98%. RFT pressure recordings were performed through the Statfjord Formation and the Lunde Formation. The pressure tests in the Statfjord Formation indicated very good permeability and gave a water gradient of 0.99 g/cc. Furthermore. Comparison with 34/8-1 pressures indicated a sealing fault between the A-South and the A-North segments. No wire line fluid samples were taken.
    The well was permanently abandoned on 17 November 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]
    1220.00
    3240.00

  • 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
    3008.0
    3019.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    11.8
    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
    462.0
    36
    472.0
    0.00
    LOT
    SURF.COND.
    20
    1177.0
    26
    1205.0
    1.66
    LOT
    INTERM.
    13 3/8
    2680.0
    17 1/2
    2700.0
    1.80
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL
    0
    0
    DIL LSS GR SP
    1177
    3228
    LDL CNL CAL GR
    1177
    3228
    MWD
    462
    1177
    NGT
    2680
    3229
    RFT
    3003
    3218
    SHDT
    2680
    3231
    VSP
    1000
    3235

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.24
    pdf
    4.73
    pdf
    6.52

  • 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
    2.19
    pdf
    12.59

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    376
    1.70
    34.0
    12.0
    WATER BASED
    17.11.1986
    391
    1.05
    99.0
    99.0
    WATER BASED
    05.10.1986
    420
    1.70
    34.0
    12.0
    WATER BASED
    17.11.1986
    428
    1.05
    WATER BASED
    07.10.1986
    462
    1.05
    99.0
    99.0
    WATER BASED
    06.10.1986
    462
    1.05
    99.0
    99.0
    WATER BASED
    05.10.1986
    472
    1.05
    WATER BASED
    08.10.1986
    483
    1.05
    WATER BASED
    14.10.1986
    982
    1.05
    WATER BASED
    14.10.1986
    1048
    1.05
    WATER BASED
    09.10.1986
    1200
    1.05
    WATER BASED
    14.10.1986
    1200
    1.20
    WATER BASED
    13.10.1986
    1205
    1.20
    WATER BASED
    14.10.1986
    1205
    1.20
    14.0
    8.0
    WATER BASED
    17.10.1986
    1205
    1.15
    9.0
    4.0
    WATER BASED
    16.10.1986
    1585
    1.30
    20.0
    12.0
    WATER BASED
    20.10.1986
    1848
    1.36
    20.0
    13.0
    WATER BASED
    20.10.1986
    2135
    1.36
    20.0
    12.0
    WATER BASED
    20.10.1986
    2281
    1.40
    24.0
    10.0
    WATER BASED
    20.10.1986
    2452
    1.44
    25.0
    10.0
    WATER BASED
    21.10.1986
    2461
    1.44
    24.0
    9.0
    WATER BASED
    22.10.1986
    2515
    1.70
    34.0
    12.0
    WATER BASED
    17.11.1986
    2562
    1.44
    29.0
    11.0
    WATER BASED
    23.10.1986
    2609
    1.44
    29.0
    9.0
    WATER BASED
    26.10.1986
    2700
    1.44
    26.0
    8.0
    WATER BASED
    26.10.1986
    2700
    1.47
    27.0
    9.0
    WATER BASED
    26.10.1986
    2700
    1.60
    30.0
    7.0
    WATER BASED
    28.10.1986
    2700
    1.47
    27.0
    9.0
    WATER BASED
    27.10.1986
    2705
    1.60
    23.0
    7.0
    WATER BASED
    29.10.1986
    2764
    1.60
    26.0
    9.0
    WATER BASED
    30.10.1986
    2811
    1.60
    27.0
    9.0
    WATER BASED
    02.11.1986
    2828
    1.60
    28.0
    10.0
    WATER BASED
    02.11.1986
    2875
    1.60
    30.0
    11.0
    WATER BASED
    02.11.1986
    2944
    1.70
    28.0
    9.0
    WATER BASED
    03.11.1986
    2995
    1.70
    29.0
    9.0
    WATER BASED
    04.11.1986
    3020
    1.70
    29.0
    10.0
    WATER BASED
    05.11.1986
    3038
    1.70
    32.0
    12.0
    WATER BASED
    06.11.1986
    3065
    1.70
    33.0
    12.0
    WATER BASED
    11.11.1986
    3138
    1.70
    33.0
    11.0
    WATER BASED
    11.11.1986
    3155
    1.70
    30.0
    8.0
    WATER BASED
    11.11.1986
    3203
    1.70
    32.0
    11.0
    WATER BASED
    09.11.1986
    3240
    1.70
    30.0
    10.0
    WATER BASED
    12.11.1986
    3240
    1.70
    30.0
    10.0
    WATER BASED
    13.11.1986
    3240
    1.70
    32.0
    10.0
    WATER BASED
    14.11.1986

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2888.0
    [m]
    SWC
    HYDRO?
    2898.5
    [m]
    SWC
    (ALLE)
    2902.0
    [m]
    SWC
    2905.0
    [m]
    SWC
    2908.0
    [m]
    SWC
    2911.0
    [m]
    SWC
    2919.0
    [m]
    SWC
    2935.0
    [m]
    SWC
    2974.0
    [m]
    SWC
    2990.0
    [m]
    SWC
    3053.0
    [m]
    SWC
    3077.0
    [m]
    SWC
    3111.0
    [m]
    SWC
    3135.0
    [m]
    SWC