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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6608/11-1

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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.
    6608/11-1
    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.
    NORWEGIAN SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    6608/11-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NRGS 84 - 456 SP. 3540
    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.
    523-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.
    26
    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,
    19.07.1986
    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.
    13.08.1986
    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.
    13.08.1988
    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.
    15.12.2006
    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.
    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.
    25.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    381.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1620.0
    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).
    1620.0
    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.
    GREY BEDS (INFORMAL)
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    66° 1' 4.02'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    8° 23' 38.67'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7322210.51
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    472517.23
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    32
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    936

  • Wellbore history
    General
    Well 6608/11-1 was drilled on the Nordland Ridge, west of the Helgeland Basin and east of the Norne Field area. The Primary objective was sandstones of Middle to Early Jurassic age. The well should drill into Triassic deposits expected at 2010 m and TD was planned at 2095 m.
    Operations and results
    Wildcat well 6608/11-1 was spudded with the semi-submersible installation Dyvi Stena on 19 July 1986. Due to unexpected geological development, the well was terminated already at 1620 m in Late Triassic Grey Beds. Drilling proceeded without significant problems. The well was drilled with seawater bentonite spud mud down to 695 m, with KCl/polymer mud from 695 m to 1619 m, and with bentonite/polymer mud from 1619 m to TD.
    The well penetrated Pliocene rocks with traces of tuff, which were interpreted as re-worked Paleocene tuffaceous rocks. Due to erosion these Pliocene rocks were situated on top of the Paleocene deposits, implying that most of the Tertiary rocks are missing. The Paleocene sediments were resting on Early Jurassic sediments, Åre Formation at 1233 m. Only the lowermost part of the Åre Formation was present due to erosion, implying that the whole of the Cretaceous and most of the Jurassic succession is missing in the well. The penetrated Åre Formation consisted of interbedded sandstones and claystones with minor coal beds. The electrical logs showed that the formation was water filled. No shows were reported from any section in the well neither on-rig, or from post-well geochemical analyses.
    One core was cut in the interval 1372 - 1397.7 m in Triassic rocks. No wire line pressure data or fluid samples were collected in the well.
    The well was permanently abandoned on 13 August 1986 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]
    525.00
    1619.00

  • 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
    1372.0
    1397.7
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    25.7
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1372-1377m
    Core photo at depth: 1377-1382m
    Core photo at depth: 1382-1387m
    Core photo at depth: 1387-1392m
    Core photo at depth: 1392-1397m
    1372-1377m
    1377-1382m
    1382-1387m
    1387-1392m
    1392-1397m
    Core photo at depth: 1372-1397m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    1372-1397m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1184.9
    [m]
    DC
    STRAT
    1211.0
    [m]
    DC
    STRAT
    1223.9
    [m]
    DC
    STRAT
    1231.0
    [m]
    DC
    STRAT
    1243.0
    [m]
    DC
    STRAT
    1249.0
    [m]
    DC
    STRAT
    1265.9
    [m]
    DC
    STRAT
    1280.0
    [m]
    DC
    STRAT
    1322.0
    [m]
    DC
    STRAT
    1331.0
    [m]
    DC
    STRAT
    1340.0
    [m]
    DC
    STRAT
    1361.0
    [m]
    DC
    STRAT
    1372.0
    [m]
    DC
    STRAT
    1384.0
    [m]
    DC
    STRAT
    1397.0
    [m]
    DC
    STRAT
    1412.0
    [m]
    DC
    STRAT
    1421.0
    [m]
    DC
    STRAT
    1433.0
    [m]
    DC
    STRAT
    1442.0
    [m]
    DC
    STRAT
    1450.0
    [m]
    DC
    STRAT
    1463.0
    [m]
    DC
    STRAT
    1472.0
    [m]
    DC
    STRAT
    1490.0
    [m]
    DC
    STRAT
    1502.0
    [m]
    DC
    STRAT
    1511.0
    [m]
    DC
    STRAT
    1519.9
    [m]
    DC
    STRAT
    1532.0
    [m]
    DC
    STRAT
    1541.0
    [m]
    DC
    STRAT
    1550.0
    [m]
    DC
    STRAT
    1562.0
    [m]
    DC
    STRAT
    1571.0
    [m]
    DC
    STRAT
    1583.0
    [m]
    DC
    STRAT
    1595.0
    [m]
    DC
    STRAT
    1601.0
    [m]
    DC
    STRAT
    1615.0
    [m]
    DC
    STRAT
    1619.0
    [m]
    DC
    STRAT

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    406
    406
    1177
    1177
    1222
    1233
    1233
    1318

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.39
    pdf
    0.45
    pdf
    1.06
    pdf
    3.74

  • 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
    6.90
    pdf
    0.77
    pdf
    13.74

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST
    715
    1170
    CST
    1185
    1615
    ISF BHC GR
    677
    1170
    ISF BHC MSFL GR
    1165
    1613
    ISF LSS GR
    519
    693
    LDL CNL GR
    1165
    1614
    LDL GR
    519
    693
    LDL GR
    677
    1171
    MWD - GR RES
    525
    1620
    SHDT GR
    1165
    1614
    VSP
    870
    1615

  • 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
    519.0
    36
    524.0
    0.00
    LOT
    SURF.COND.
    20
    677.0
    26
    695.0
    1.42
    LOT
    INTERM.
    13 3/8
    1165.0
    17 1/2
    1185.0
    1.50
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    695
    1.12
    700.0
    30.5
    WATER BASED
    27.07.1986
    695
    1.10
    1400.0
    5.1
    WATER BASED
    30.07.1986
    695
    1.12
    1100.0
    33.0
    WATER BASED
    27.07.1986
    757
    1.10
    1900.0
    6.8
    WATER BASED
    31.07.1986
    1015
    1.30
    2200.0
    8.4
    WATER BASED
    11.08.1986
    1066
    1.11
    1600.0
    5.9
    WATER BASED
    01.08.1986
    1182
    1.21
    2900.0
    10.9
    WATER BASED
    04.08.1986
    1182
    0.00
    2700.0
    11.4
    WATERBASED
    04.08.1986
    1185
    1.25
    2100.0
    5.9
    WATER BASED
    04.08.1986
    1276
    1.35
    2900.0
    10.9
    WATER BASED
    05.08.1986
    1372
    1.33
    3000.0
    10.2
    WATER BASED
    06.08.1986
    1399
    1.28
    2300.0
    8.0
    WATER BASED
    07.08.1986
    1620
    1.28
    2400.0
    6.8
    WATER BASED
    08.08.1986
    1620
    1.30
    2200.0
    8.5
    WATER BASED
    11.08.1986