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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30/6-5

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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.
    30/6-5
    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).
    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
    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.
    30/6-5
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    LINE 703 - 142 SP:427.
    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.
    Den norske stats oljeselskap a.s
    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.
    290-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.
    66
    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,
    11.06.1981
    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.
    15.08.1981
    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.
    15.08.1983
    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.
    29.03.2014
    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.
    MIDDLE 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.
    BRENT GP
    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.
    EARLY 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.
    DRAKE 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.
    156.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3550.0
    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).
    3550.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    126
    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.
    LUNDE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 41' 20.6'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 57' 11.09'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6728313.49
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    497437.43
    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.
    118

  • Wellbore history
    General
    Well 30/6-5 was drilled on the Brage Horst east of the Gullfaks fault block in the North Sea. The main purpose was to test the hydrocarbon potential in Middle Jurassic sandstone.
    Operations and results
    Wildcat well 30/6-5 was spudded with the semi-submersible installation Deepsea Saga on 11 June 1981 and drilled to TD at 3550 m in the Triassic Lunde Formation. No significant problem was encountered in the operations. The well was drilled with spud mud down to 951 m, with gypsum/polymer mud from 951 m to 1801 m, and with gel/lignosulphonate mud from 1801 m to TD.
    The Brent Group, Tarbert Formation was encountered at 2824 m. From wire line logs and petrophysical analysis oil was found from 2841 m down to 2899 m. Pressure measurements indicated oil/water contact at 2907 m. Shows on cores continued down to 2933 m. The Etive Formation represented the main part of the net pay.
    Eight cores were cut in the well. Cores 1 and 2 were cut in the interval 2843.5 - 2854.7 m. Cores 3 to 8 were cut in the interval 2871.5 - 2949.8 m. RFT oil samples were taken at 2847.5 m, 2867.1 m (film of oil), 2871.2 m (traces of oil), 2874.5 m, 2881 m, 2889 m, 2923 m (film of oil). The samples proved H2S contents in the range 30 - 50 ppm.
    The well was permanently abandoned on 15 August 1981 as an oil discovery.
    Testing
    The rig lacked qualified equipment and personnel trained for drill stem testing with the levels of H2S proven by RFT sampling. Testing was therefore abandoned.

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    NO
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    250.00
    3547.00

  • 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
    2843.5
    2848.2
    [m ]
    2
    2848.3
    2853.1
    [m ]
    3
    2871.5
    2874.4
    [m ]
    4
    2874.5
    2893.8
    [m ]
    5
    2893.7
    2909.1
    [m ]
    6
    2909.0
    2919.6
    [m ]
    7
    2919.5
    2938.9
    [m ]
    8
    2938.7
    2949.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    87.7
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2843-2846m
    Core photo at depth: 2846-2848m
    Core photo at depth: 2851-2853m
    Core photo at depth: 2871-2874m
    Core photo at depth: 2874-2877m
    2843-2846m
    2846-2848m
    2851-2853m
    2871-2874m
    2874-2877m
    Core photo at depth: 2877-2880m
    Core photo at depth: 2880-2883m
    Core photo at depth: 2883-2886m
    Core photo at depth: 2886-2889m
    Core photo at depth: 2889-2892m
    2877-2880m
    2880-2883m
    2883-2886m
    2886-2889m
    2889-2892m
    Core photo at depth: 2892-2893m
    Core photo at depth: 2893-2896m
    Core photo at depth: 2896-2899m
    Core photo at depth: 2899-2902m
    Core photo at depth: 2902-2905m
    2892-2893m
    2893-2896m
    2896-2899m
    2899-2902m
    2902-2905m
    Core photo at depth: 2905-2908m
    Core photo at depth: 2908-2909m
    Core photo at depth: 2909-2912m
    Core photo at depth: 2912-2915m
    Core photo at depth: 2915-2918m
    2905-2908m
    2908-2909m
    2909-2912m
    2912-2915m
    2915-2918m
    Core photo at depth: 2918-2919m
    Core photo at depth: 2919-2922m
    Core photo at depth: 2922-2925m
    Core photo at depth: 2925-2928m
    Core photo at depth: 2928-2931m
    2918-2919m
    2919-2922m
    2922-2925m
    2925-2928m
    2928-2931m
    Core photo at depth: 2931-2934m
    Core photo at depth: 2934-2937m
    Core photo at depth: 2937-2938m
    Core photo at depth: 2938-2941m
    Core photo at depth: 2941-2944m
    2931-2934m
    2934-2937m
    2937-2938m
    2938-2941m
    2941-2944m
    Core photo at depth: 2944-2947m
    Core photo at depth: 2947-2949m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    2944-2947m
    2947-2949m

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.31
    pdf
    0.22
    pdf
    1.04
    pdf
    0.10
    pdf
    7.32
    pdf
    5.33
    pdf
    1.49

  • 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
    17.39

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL CCL VDL GR
    555
    1798
    CBL CCL VDL GR
    555
    1798
    CBL CCL VDL GR
    1600
    3550
    DLL MSFL GR
    2789
    3168
    FDC CNL GR CAL
    950
    3550
    HDT
    1800
    3550
    ISF SON GR SP
    242
    3550

  • 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
    242.0
    36
    242.0
    0.00
    LOT
    SURF.COND.
    20
    950.0
    26
    955.0
    1.74
    LOT
    INTERM.
    13 3/8
    1801.0
    17 1/2
    1815.0
    1.77
    LOT
    INTERM.
    9 5/8
    2789.0
    12 1/4
    2805.0
    1.65
    LOT
    LINER
    7
    3548.0
    8 1/2
    3550.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    250
    1.08
    53.0
    waterbased
    580
    1.08
    43.0
    waterbased
    750
    1.10
    43.0
    waterbased
    1125
    1.09
    50.0
    waterbased
    1355
    1.12
    48.0
    waterbased
    2155
    1.37
    59.0
    waterbased
    2555
    1.43
    50.0
    waterbased
    3025
    1.25
    50.0
    waterbased
    3325
    1.27
    51.0
    waterbased

  • Pressure plots
    Pressure plots
    The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.
    Pressure plots
    Document name
    Document format
    Document size [MB]
    pdf
    0.22