Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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31.10.2024 - 01:27
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34/8-5

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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.
    34/8-5
    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
    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
    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.
    34/8-5
    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.
    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.
    667-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.
    43
    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,
    18.02.1991
    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.
    01.04.1991
    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.
    01.04.1993
    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.
    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.
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    297.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3540.0
    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).
    3528.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    10.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    113
    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° 19' 29.94'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 20' 57.94'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6799321.73
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    465171.96
    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.
    1719

  • Wellbore history
    General
    Well 34/8-5 is located on the A-structure on the Visund Field. This is a NNE-SSW oriented elongated fault block with the Pre-Cretaceous strata dipping towards WNW. The A-Central fault divides the A-structure into the A-North and A-South compartments. Well 34/8-5 was drilled on the southern part of the A-South compartment, ca 6 kilometres SSW of Visund Discovery well 34/8-1. The primary objective was to appraise the Jurassic Brent Group. A secondary objective was to test reservoir quality of an Oligocene submarine fan system. Possible shallow gas was predicted at 604 and 793 m.
    Operations and results
    Appraisal well 34/8-5 was spudded with the semi-submersible installation Transocean 8 on 18 February 1991 and drilled to TD at 3540 m (3528 m TVD) in the Late Triassic Lunde Formation. The 36" hole was drilled to TD at 406 m, but when attempting to stab in the 30" casing the hole could not be located. The well was re-spudded and this time with success. An 8 1/2" pilot hole was drilled from 406 m to 850 m to check for shallow gas. No gas was observed. The well was planned vertical, but built some angle below 2660 m, and at ca 2720 m the deviation was ca 10 deg. This angle kept down to TD resulting in a 12 m discrepancy between measured and vertical depth at TD. There were also some hole curable problems during logging, but otherwise operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1197 m and with KCl/polymer mud from 1197 m to TD.
    Thinly developed water bearing Oligocene and Eocene sands were encountered. The Brent Group was encountered at 2855 m and was found water bearing with oil shows on the cores. The shows continued down to 2977 m. Otherwise there were no shows or other hydrocarbon indications in the well.
    Seven cores were cut from 2855 m to 3048.5 m in the Brent Group, one core from a sand at 3354 m to 3375.3 m in the Amundsen Formation, and one from 3406 to 3419.5 m in the Statfjord Formation. The RFT tool was run for pressure points, but no fluid samples were taken.
    The well was permanently abandoned on 1 April 1991 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]
    1200.00
    3540.00

  • 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
    2855.0
    2881.0
    [m ]
    2
    2883.0
    2911.0
    [m ]
    3
    2910.5
    2931.0
    [m ]
    4
    2931.5
    2959.5
    [m ]
    5
    2959.5
    2985.3
    [m ]
    6
    2986.5
    2999.0
    [m ]
    7
    3033.3
    3049.0
    [m ]
    8
    3354.0
    3375.3
    [m ]
    9
    3406.0
    3419.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    191.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2855-2860m
    Core photo at depth: 2860-2865m
    Core photo at depth: 2865-2870m
    Core photo at depth: 2870-2875m
    Core photo at depth: 2875-2880m
    2855-2860m
    2860-2865m
    2865-2870m
    2870-2875m
    2875-2880m
    Core photo at depth: 2880-2885m
    Core photo at depth: 2885-2890m
    Core photo at depth: 2890-2895m
    Core photo at depth: 2895-2900m
    Core photo at depth: 2900-2905m
    2880-2885m
    2885-2890m
    2890-2895m
    2895-2900m
    2900-2905m
    Core photo at depth: 2905-2910m
    Core photo at depth: 2910-2914m
    Core photo at depth: 2914-2919m
    Core photo at depth: 2919-2924m
    Core photo at depth: 2924-2929m
    2905-2910m
    2910-2914m
    2914-2919m
    2919-2924m
    2924-2929m
    Core photo at depth: 2929-2934m
    Core photo at depth: 2934-2939m
    Core photo at depth: 2939-2944m
    Core photo at depth: 2944-2959m
    Core photo at depth: 2949-2954m
    2929-2934m
    2934-2939m
    2939-2944m
    2944-2959m
    2949-2954m
    Core photo at depth: 2954-2959m
    Core photo at depth: 2959-2963m
    Core photo at depth: 2963-2968m
    Core photo at depth: 2968-2973m
    Core photo at depth: 2973-2978m
    2954-2959m
    2959-2963m
    2963-2968m
    2968-2973m
    2973-2978m
    Core photo at depth: 2978-2983m
    Core photo at depth: 2983-2985m
    Core photo at depth: 2986-2991m
    Core photo at depth: 2991-2996m
    Core photo at depth: 2996-2999m
    2978-2983m
    2983-2985m
    2986-2991m
    2991-2996m
    2996-2999m
    Core photo at depth: 3033-3038m
    Core photo at depth: 3038-3043m
    Core photo at depth: 3043-3048m
    Core photo at depth: 3048-3048m
    Core photo at depth: 3354-3359m
    3033-3038m
    3038-3043m
    3043-3048m
    3048-3048m
    3354-3359m
    Core photo at depth: 3359-3364m
    Core photo at depth: 3364-3369m
    Core photo at depth: 3369-3374m
    Core photo at depth: 3374-3375m
    Core photo at depth: 3406-3411m
    3359-3364m
    3364-3369m
    3369-3374m
    3374-3375m
    3406-3411m
    Core photo at depth: 3411-3416m
    Core photo at depth: 3416-3419m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    3411-3416m
    3416-3419m

  • 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
    13.04.1991 - 00:00
    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
    406.0
    36
    406.0
    0.00
    LOT
    INTERM.
    13 3/8
    1186.0
    17 1/2
    1197.0
    1.53
    LOT
    INTERM.
    9 5/8
    2600.0
    12 1/4
    2612.0
    1.82
    LOT
    OPEN HOLE
    3540.0
    8 1/2
    3540.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST
    1218
    2142
    CST
    2634
    2854
    DIL LSS
    1186
    2569
    DIL SDT
    2604
    3538
    FMS4
    2604
    3541
    LDL CNL
    1186
    2569
    LDL CNL NGL
    2604
    3538
    LWD
    409
    850
    MWD
    320
    3540
    RFT
    2856
    3020
    RFT
    3360
    3416
    VSP
    1300
    3440

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.14
    pdf
    2.63

  • 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
    3.42
    pdf
    17.68

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    345
    1.20
    WATER BASED
    20.02.1991
    406
    1.20
    WATER BASED
    21.02.1991
    406
    1.20
    WATER BASED
    19.02.1991
    746
    1.20
    WATER BASED
    22.02.1991
    941
    1.10
    WATER BASED
    26.02.1991
    1197
    1.10
    WATER BASED
    26.02.1991
    1197
    1.09
    15.0
    7.0
    WATER BASED
    26.02.1991
    1197
    1.15
    14.0
    8.0
    WATER BASED
    26.02.1991
    1532
    1.20
    14.0
    8.0
    WATER BASED
    27.02.1991
    1934
    1.35
    16.0
    8.0
    WATER BASED
    28.02.1991
    2549
    1.60
    36.0
    9.0
    WATER BASED
    27.03.1991
    2612
    1.40
    26.0
    10.0
    WATER BASED
    05.03.1991
    2612
    1.41
    24.0
    9.0
    WATER BASED
    05.03.1991
    2612
    1.42
    21.0
    8.0
    WATER BASED
    05.03.1991
    2618
    1.45
    22.0
    4.0
    WATER BASED
    05.03.1991
    2688
    1.60
    20.0
    5.0
    WATER BASED
    06.03.1991
    2742
    1.59
    23.0
    6.0
    WATER BASED
    07.03.1991
    2855
    1.60
    26.0
    8.0
    WATER BASED
    08.03.1991
    2894
    1.60
    26.0
    9.0
    WATER BASED
    11.03.1991
    2930
    1.60
    28.0
    8.0
    WATER BASED
    11.03.1991
    2960
    1.60
    28.0
    8.0
    WATER BASED
    11.03.1991
    3026
    1.61
    26.0
    8.0
    WATER BASED
    12.03.1991
    3049
    1.60
    27.0
    9.0
    WATER BASED
    13.03.1991
    3049
    1.60
    27.0
    8.0
    WATER BASED
    14.03.1991
    3100
    1.60
    35.0
    9.0
    WATER BASED
    26.03.1991
    3118
    1.60
    27.0
    8.0
    WATER BASED
    15.03.1991
    3118
    1.60
    27.0
    8.0
    WATER BASED
    15.03.1991
    3335
    1.60
    29.0
    9.0
    WATER BASED
    18.03.1991
    3356
    1.60
    28.0
    8.0
    WATER BASED
    18.03.1991
    3375
    1.60
    29.0
    9.0
    WATER BASED
    18.03.1991
    3406
    1.60
    28.0
    8.0
    WATER BASED
    20.03.1991
    3447
    1.59
    26.0
    9.0
    WATER BASED
    20.03.1991
    3540
    1.60
    30.0
    9.0
    WATER BASED
    22.03.1991
    3540
    1.60
    30.0
    9.0
    WATER BASED
    26.03.1991
    3540
    1.60
    30.0
    10.0
    WATER BASED
    26.03.1991
    3540
    1.60
    37.0
    10.0
    WATER BASED
    26.03.1991
    3540
    1.60
    29.0
    9.0
    WATER BASED
    21.03.1991

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1218.5
    [m]
    SWC
    HYDRO
    1249.0
    [m]
    SWC
    HYDRO
    1268.5
    [m]
    SWC
    HYDRO
    1281.5
    [m]
    SWC
    HYDRO
    1288.0
    [m]
    SWC
    HYDRO
    1306.0
    [m]
    SWC
    HYDRO
    1329.0
    [m]
    SWC
    HYDRO
    1342.5
    [m]
    SWC
    HYDRO
    1355.0
    [m]
    SWC
    HYDRO
    1364.5
    [m]
    SWC
    HYDRO
    1377.0
    [m]
    SWC
    HYDRO
    1394.0
    [m]
    SWC
    HYDRO
    1436.0
    [m]
    SWC
    HYDRO
    1446.0
    [m]
    SWC
    HYDRO
    1467.0
    [m]
    SWC
    HYDRO
    1484.0
    [m]
    SWC
    HYDRO
    1491.5
    [m]
    SWC
    HYDRO
    1502.0
    [m]
    SWC
    HYDRO
    1542.5
    [m]
    SWC
    HYDRO
    1551.0
    [m]
    SWC
    HYDRO
    1561.0
    [m]
    SWC
    HYDRO
    1838.0
    [m]
    SWC
    HYDRO
    1858.0
    [m]
    SWC
    HYDRO
    1927.5
    [m]
    SWC
    HYDRO
    2038.0
    [m]
    SWC
    HYDRO
    2699.5
    [m]
    SWC
    HYDRO
    2749.0
    [m]
    SWC
    HYDRO
    2832.0
    [m]
    SWC
    HYDRO
    2852.0
    [m]
    SWC
    HYDRO
    2856.9
    [m]
    C
    HYDRO
    2858.9
    [m]
    C
    HYDRO
    2860.0
    [m]
    C
    HYDRO
    2862.6
    [m]
    C
    HYDRO
    2864.4
    [m]
    C
    HYDRO
    2869.8
    [m]
    C
    HYDRO
    2875.5
    [m]
    C
    HYDRO
    2880.2
    [m]
    C
    HYDRO
    2885.6
    [m]
    C
    HYDRO
    2887.7
    [m]
    C
    HYDRO
    2890.2
    [m]
    C
    HYDRO
    2890.8
    [m]
    C
    HYDRO
    2891.8
    [m]
    C
    HYDRO
    2892.5
    [m]
    C
    HYDRO
    2896.7
    [m]
    C
    HYDRO
    2897.2
    [m]
    C
    HYDRO
    2898.5
    [m]
    C
    HYDRO
    2899.7
    [m]
    C
    HYDRO
    2903.4
    [m]
    C
    HYDRO
    2904.1
    [m]
    C
    HYDRO
    2908.7
    [m]
    C
    HYDRO
    2911.9
    [m]
    C
    HYDRO
    2913.5
    [m]
    C
    HYDRO
    2914.9
    [m]
    C
    HYDRO
    2918.5
    [m]
    C
    HYDRO
    2920.7
    [m]
    C
    HYDRO
    2921.7
    [m]
    C
    HYDRO
    2923.7
    [m]
    C
    HYDRO
    2924.2
    [m]
    C
    HYDRO
    2930.1
    [m]
    C
    HYDRO
    2932.4
    [m]
    C
    HYDRO
    2934.7
    [m]
    C
    HYDRO
    2938.4
    [m]
    C
    HYDRO
    2943.3
    [m]
    C
    HYDRO
    2945.0
    [m]
    C
    HYDRO
    2951.6
    [m]
    C
    HYDRO
    2952.3
    [m]
    C
    HYDRO
    2953.9
    [m]
    C
    HYDRO
    2956.7
    [m]
    C
    HYDRO
    2961.4
    [m]
    C
    HYDRO
    2962.3
    [m]
    C
    HYDRO
    2963.5
    [m]
    C
    HYDRO
    2966.4
    [m]
    C
    HYDRO
    2973.5
    [m]
    C
    HYDRO
    2978.6
    [m]
    C
    HYDRO
    2992.3
    [m]
    C
    HYDRO
    2998.2
    [m]
    C
    HYDRO