Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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sodir.no          Norsk
22.11.2024 - 09:09
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34/8-17 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.
    34/8-17 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
    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.
    34/8-17
    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.
    Statoil Petroleum 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.
    1496-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.
    58
    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,
    16.01.2014
    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.
    14.03.2014
    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.
    14.03.2016
    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.
    15.03.2016
    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.
    GAS
    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.
    LATE 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.
    INTRA HEATHER FM SS
    2nd level with HC, age
    Age of lithostratigraphic unit, 2nd level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE.
    MIDDLE JURASSIC
    2nd level with HC, formation
    Name of lithostartigraphic unit, 2nd 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.
    BRENT GP
    3rd level with HC, age
    Age of lithostratigraphic unit, 3rd level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE.
    MIDDLE JURASSIC
    3rd level with HC, formation
    Name of lithostartigraphic unit, 3rd 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.
    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.
    378.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4587.0
    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).
    3190.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    70.6
    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° 26' 5.92'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 35' 20.7'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6811470.20
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    478078.78
    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.
    7310

  • Wellbore history
    General
    Well 34/8-17 S was from the drilled from Slot 1 on the Visund Nord ITS fixed multi-well template, on Tampen Spur in the North Sea. The primary objective was to test the Helene prospect within the Upper Statfjord Group, and the Methone prospect in the Lunde Formation/Lower Statfjord Group. After the 34/8-17 S exploration well two Visund development wells was planned as sidetracks to the exploration well.
    Operations and results
    Wildcat well 34/8-17 S was spudded with the semi-submersible installation  COSLPioneer on 16 January 2014 and drilled to TD at 4587 m (3190 m TVD) m in the Late Triassic Lunde Formation. The well was drilled with spud mud down to 489 m, with KCl/polymer mud from 489 m to 1251 m, with Performadril WBM from 1251 m to 2112 m, and with Innovert OBM from 2112 m to TD.
    Well 34/8-17 S proved a gas column of 52 m TVD in Intra Heather Formation Sandstone and underlying Brent Group sandstone. Minor amounts of hydrocarbons were found also in the Cook Formation and the upper part of Statfjord Group. The results show good reservoir properties in the Intra Heather Formation and Brent Group sandstones. Well 34/8-17 S found gas down-to base of the Brent Group (GDT 2987 m TVD MSL) but seismic anomalies indicate that the hydrocarbon-water contact is at 3020 m TVD MSL. The Lower Statfjord Group and Lunde Formation were water filled.
    The sidetracked development wells also penetrated gas-filled Intra Draupne Formation sandstones. These were not present in the exploration well.
    No oil shows were described in the wells.
    No cores were cut in the well. Wire line fluid samples were taken at 3938 m, 4000.5 m, and 4029 m.
    Well bore 34/8-17 S was plugged back and permanently abandoned on 14 March 2014 as a gas discovery.
    Testing
    No drill stem test was performed.

  • 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
    489.4
    36
    495.0
    0.00
    SURF.COND.
    20
    1251.0
    26
    1261.0
    1.57
    FIT
    INTERM.
    13 3/8
    2111.8
    17 1/2
    2123.0
    1.70
    FIT
    SURF.COND.
    9 5/8
    3455.3
    12 1/4
    3466.0
    1.86
    FIT
    OPEN HOLE
    4587.0
    8 1/2
    4587.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    MWD-GR RES
    493
    3466
    MWD-GR RES DEN NEU SON FSWD
    3466
    4586

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    378
    1.50
    23.0
    KCl/Polymer
    495
    1.50
    21.0
    KCl/Polymer
    1261
    1.50
    25.0
    KCl/Polymer
    1261
    1.39
    23.0
    Performadril
    1267
    1.39
    26.0
    Performadril
    2031
    1.60
    30.0
    Innovert
    2123
    1.53
    45.0
    Performadril
    2211
    1.60
    26.0
    Innovert
    2997
    1.61
    30.0
    Innovert
    3158
    1.55
    31.0
    Innovert
    3466
    1.57
    34.0
    Innovert
    3466
    1.55
    29.0
    Innovert
    3503
    1.62
    28.0
    Innovert
    3779
    1.66
    33.0
    Innovert
    4333
    1.66
    34.0
    Innovert
    4587
    1.78
    41.0
    Innovert

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3801.0
    [m]
    DC
    PETROSTR
    3813.0
    [m]
    DC
    PETROS
    3825.0
    [m]
    DC
    PETROS
    3837.0
    [m]
    DC
    PETROS
    3849.0
    [m]
    DC
    PETROS
    3852.0
    [m]
    DC
    PETROS
    3855.0
    [m]
    DC
    PETROS
    3861.0
    [m]
    DC
    PETROS
    3867.0
    [m]
    DC
    PETROS
    3870.0
    [m]
    DC
    PETROS
    3873.0
    [m]
    DC
    PETROS
    3876.0
    [m]
    DC
    PETROS
    3885.0
    [m]
    DC
    PETROS
    3890.0
    [m]
    DC
    PETROS
    3894.0
    [m]
    DC
    PETROS
    3897.0
    [m]
    DC
    PETROS
    3900.0
    [m]
    DC
    PETROS
    3903.0
    [m]
    DC
    PETROS
    3906.0
    [m]
    DC
    PETROS
    3909.0
    [m]
    DC
    PETROS
    3912.0
    [m]
    DC
    PETROS
    3918.0
    [m]
    DC
    PETROS
    3921.0
    [m]
    DC
    PETROS
    3924.0
    [m]
    DC
    PETROS
    3927.0
    [m]
    DC
    PETROS
    3930.0
    [m]
    DC
    PETROS
    3933.0
    [m]
    DC
    PETROS
    3936.0
    [m]
    DC
    PETROS
    3939.0
    [m]
    DC
    PETROS
    3945.0
    [m]
    DC
    PETROS
    3951.0
    [m]
    DC
    PETROS
    3960.0
    [m]
    DC
    PETROS
    3969.0
    [m]
    DC
    PETROS
    3978.0
    [m]
    DC
    PETROS
    3987.0
    [m]
    DC
    PETROS
    3993.0
    [m]
    DC
    PETROS
    3996.0
    [m]
    DC
    PETROS
    3999.0
    [m]
    DC
    PETROS
    4005.0
    [m]
    DC
    PETROS
    4011.0
    [m]
    DC
    PETROS
    4017.0
    [m]
    DC
    PETROS
    4020.0
    [m]
    DC
    PETROS
    4023.0
    [m]
    DC
    PETROS
    4029.0
    [m]
    DC
    PETROS
    4035.0
    [m]
    DC
    PETROS
    4041.0
    [m]
    DC
    PETROS
    4047.0
    [m]
    DC
    PETROS
    4053.0
    [m]
    DC
    PETROS
    4059.0
    [m]
    DC
    PETROS
    4065.0
    [m]
    DC
    PETROS
    4071.0
    [m]
    DC
    PETROS
    4077.0
    [m]
    DC
    PETROS
    4083.0
    [m]
    DC
    PETROS
    4085.0
    [m]
    DC
    PETROS
    4089.0
    [m]
    DC
    PETROS
    4104.0
    [m]
    DC
    PETROS
    4110.0
    [m]
    DC
    PETROS
    4116.0
    [m]
    DC
    PETROS
    4122.0
    [m]
    DC
    PETROS
    4128.0
    [m]
    DC
    PETROS
    4134.0
    [m]
    DC
    PETROS
    4140.0
    [m]
    DC
    PETROS
    4149.0
    [m]
    DC
    PETROS
    4155.0
    [m]
    DC
    PETROS
    4161.0
    [m]
    DC
    PETROS
    4167.0
    [m]
    DC
    PETROS
    4173.0
    [m]
    DC
    PETROS
    4179.0
    [m]
    DC
    PETROS
    4185.0
    [m]
    DC
    PETROS
    4191.0
    [m]
    DC
    PETROS
    4197.0
    [m]
    DC
    PETROS
    4203.0
    [m]
    DC
    PETROS
    4209.0
    [m]
    DC
    PETROS
    4215.0
    [m]
    DC
    PETROS
    4221.0
    [m]
    DC
    PETROS
    4227.0
    [m]
    DC
    PETROS
    4233.0
    [m]
    DC
    PETROS
    4242.0
    [m]
    DC
    PETROS
    4251.0
    [m]
    DC
    PETROS
    4260.0
    [m]
    DC
    PETROS
    4272.0
    [m]
    DC
    PETROS
    4278.0
    [m]
    DC
    PETROS
    4281.0
    [m]
    DC
    PETROS
    4284.0
    [m]
    DC
    PETROS
    4290.0
    [m]
    DC
    PETROS
    4293.0
    [m]
    DC
    PETROS
    4296.0
    [m]
    DC
    PETROS
    4299.0
    [m]
    DC
    PETROS
    4314.0
    [m]
    DC
    PETROS
    4323.0
    [m]
    DC
    PETROS
    4332.0
    [m]
    DC
    PETROS
    4341.0
    [m]
    DC
    PETROS
    4350.0
    [m]
    DC
    PETROS
    4359.0
    [m]
    DC
    PETROS
    4368.0
    [m]
    DC
    PETROS
    4377.0
    [m]
    DC
    PETROS
    4386.0
    [m]
    DC
    PETROS
    4395.0
    [m]
    DC
    PETROS
    4404.0
    [m]
    DC
    PETROS
    4413.0
    [m]
    DC
    PETROS
    4422.0
    [m]
    DC
    PETROS
    4431.0
    [m]
    DC
    PETROS
    4440.0
    [m]
    DC
    PETROS
    4449.0
    [m]
    DC
    PETROS
    4458.0
    [m]
    DC
    PETROS
    4467.0
    [m]
    DC
    PETROS
    4476.0
    [m]
    DC
    PETROS
    4485.0
    [m]
    DC
    PETROS
    4494.0
    [m]
    DC
    PETROS
    4503.0
    [m]
    DC
    PETROS
    4512.0
    [m]
    DC
    PETROS
    4521.0
    [m]
    DC
    PETROS
    4530.0
    [m]
    DC
    PETROS
    4539.0
    [m]
    DC
    PETROS
    4548.0
    [m]
    DC
    PETROS
    4557.0
    [m]
    DC
    PETROS
    4566.0
    [m]
    DC
    PETROS
    4575.0
    [m]
    DC
    PETROS
    4584.0
    [m]
    DC
    PETROS