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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6406/2-6 A

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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.
    6406/2-6 A
    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
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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.
    NORWEGIAN SEA
    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.
    6406/2-6
    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.
    975-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.
    44
    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,
    24.05.2000
    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.
    06.07.2000
    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.
    06.07.2002
    Plugged and abondon date
    Date when the P&A-operations of the wellbore was finished, as reported by the operator to the Norwegian Offshore Directorate throught DDRS (Daily Drilling Reporting System). Only applied once pr. wellhead/surface location.
    06.07.2000
    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.
    18.12.2002
    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.
    GAS/CONDENSATE
    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
    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.
    EARLY 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.
    TOFTE FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    24.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    302.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5251.0
    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).
    4842.2
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    42.6
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    175
    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.
    EARLY JURASSIC
    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.
    TOFTE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    64° 45' 31.34'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    6° 22' 54.69'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7184316.92
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    375445.84
    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.
    4094

  • Wellbore history
    General
    The sidetrack well 6406/2-6 A was drilled in a presumed up-dip position of well 6406/2-6. The primary objective was to appraise the discovery in the Tofte Formation on the Ragnfrid structure. A secondary objective was to test the hydrocarbon potential in the Garn and the Ile Formations.
    Operations and results
    Appraisal well 6406/2-6 A was side-tracked from re-opened primary well 6406/2-6 on 24 May 2000 from just below the 13 3/8" casing shoe at 2715 m and drilled to a total depth of 5251 m/4842 m TVD, approximately 150 m into the Tofte Formation. Well 6406/2-6 A was drilled without major problems. It was drilled with oil-based mud ("VersaPro") from kick-off point to TD.
    In contrast to the expected up-dip position of the side-track, the well proved a down faulted segment and penetrated a significantly thicker Melke Formation and a complete package of Garn Formation, instead of a strongly eroded package according to the prognosis. The proven segment is expected to cover a relatively small area in the central parts of the Ragnfrid structure. The reservoir units proved to be down faulted and a 64 m TVD thick Viking Group was present. The Garn and the Ile Formations proved water bearing except for a possible condensate bearing thin sand in the Ile Formation. The Tofte Formation proved an approximately 4 m condensate in the top of the formation. This was confirmed by an MDT sample taken at 5105. A core was cut in the interval 5123 m to 5151 m in the Tofte Formation. The well was permanently abandoned as a condensate appraisal well on 6 July 2000.
    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]
    2800.00
    5253.00

  • 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
    5129.0
    5150.3
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    21.3
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 5123-5128m
    Core photo at depth: 5128-5133m
    Core photo at depth: 5133-5138m
    Core photo at depth: 5138-5143m
    Core photo at depth: 5143-5148m
    5123-5128m
    5128-5133m
    5133-5138m
    5138-5143m
    5143-5148m
    Core photo at depth: 5148-5151m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    5148-5151m

  • 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
    INTERM.
    13 3/8
    2749.0
    17 1/2
    2749.0
    1.94
    LOT
    INTERM.
    9 7/8
    4383.0
    12 1/4
    4383.0
    2.13
    LOT
    OPEN HOLE
    5251.0
    8 1/2
    5251.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT DSI GR
    4664
    5251
    IPLT
    4664
    5251
    MDT GR
    4831
    5159
    MSCT GR
    4770
    4808
    MWD - MPR
    2749
    5251
    VSP ASI GR
    2900
    4807

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.29

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.87
    pdf
    1.33

  • 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
    2.53

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    805
    1.86
    42.0
    VERSAPRO
    3071
    1.70
    45.0
    VERSAPRO
    3315
    1.70
    44.0
    VERSAPRO
    3386
    1.70
    44.0
    VERSAPRO
    3718
    1.70
    36.0
    VERSAPRO
    3926
    1.75
    42.0
    VERSAPRO
    4100
    1.75
    36.0
    VERSAPRO
    4212
    1.75
    38.0
    VERSAPRO
    4500
    2.02
    50.0
    VERSAPRO
    4561
    1.85
    45.0
    VERSAPRO
    4626
    2.02
    49.0
    VERSAPRO
    4673
    1.86
    45.0
    VERSAPRO
    4758
    2.04
    55.0
    VERSAPRO
    4826
    2.04
    46.0
    VERSAPRO
    4832
    2.02
    50.0
    VERSAPRO
    4849
    2.04
    48.0
    VERSAPRO
    4948
    2.04
    48.0
    VERSAPRO
    4996
    2.02
    45.0
    VERSAPRO
    5011
    2.02
    46.0
    VERSAPRO
    5018
    2.02
    46.0
    VERSAPRO
    5061
    2.02
    49.0
    VERSAPRO
    5119
    2.02
    50.0
    VERSAPRO
    5151
    2.02
    49.0
    VERSAPRO
    5159
    2.02
    50.0
    VERSAPRO
    5251
    2.02
    50.0
    VERSAPRO

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2800.0
    [m]
    DC
    STATOI
    2820.0
    [m]
    DC
    STATOI
    2840.0
    [m]
    DC
    STATOI
    2860.0
    [m]
    DC
    STATOI
    2880.0
    [m]
    DC
    STATOI
    2900.0
    [m]
    DC
    STATOI
    2920.0
    [m]
    DC
    STATOI
    2940.0
    [m]
    DC
    STATOI
    2960.0
    [m]
    DC
    STATOI
    2980.0
    [m]
    DC
    STATOI
    3000.0
    [m]
    DC
    STATOI
    3020.0
    [m]
    DC
    STATOI
    3040.0
    [m]
    DC
    STATOI
    3060.0
    [m]
    DC
    STATOI
    3080.0
    [m]
    DC
    STATOI
    3100.0
    [m]
    DC
    STATOI
    3120.0
    [m]
    DC
    STATOI
    3140.0
    [m]
    DC
    STATOI
    3160.0
    [m]
    DC
    STATOI
    3180.0
    [m]
    DC
    STATOI
    3200.0
    [m]
    DC
    STATOI
    3220.0
    [m]
    DC
    STATOI
    3240.0
    [m]
    DC
    STATOI
    3260.0
    [m]
    DC
    STATOI
    3280.0
    [m]
    DC
    STATOI
    3300.0
    [m]
    DC
    STATOI
    3320.0
    [m]
    DC
    STATOI
    3340.0
    [m]
    DC
    STATOI
    3360.0
    [m]
    DC
    STATOI
    3380.0
    [m]
    DC
    STATOI
    3400.0
    [m]
    DC
    STATOI
    3420.0
    [m]
    DC
    STATOI
    3440.0
    [m]
    DC
    STATOI
    3460.0
    [m]
    DC
    STATOI
    3480.0
    [m]
    DC
    STATOI
    3500.0
    [m]
    DC
    STATOI
    3520.0
    [m]
    DC
    STATOI
    3540.0
    [m]
    DC
    STATOI
    3560.0
    [m]
    DC
    STATOI
    3580.0
    [m]
    DC
    STATOI
    3600.0
    [m]
    DC
    STATOI
    3620.0
    [m]
    DC
    STATOI
    3640.0
    [m]
    DC
    STATOI
    3660.0
    [m]
    DC
    STATOI
    3680.0
    [m]
    DC
    STATOI
    3700.0
    [m]
    DC
    STATOI
    3720.0
    [m]
    DC
    STATOI
    3740.0
    [m]
    DC
    STATOI
    4000.0
    [m]
    DC
    STATOI
    4020.0
    [m]
    DC
    STATOI
    4040.0
    [m]
    DC
    STATOI
    4060.0
    [m]
    DC
    STATOI
    4080.0
    [m]
    DC
    STATOI
    4100.0
    [m]
    DC
    STATOI
    4120.0
    [m]
    DC
    STATOI
    4140.0
    [m]
    DC
    STATOI
    4160.0
    [m]
    DC
    STATOI
    4180.0
    [m]
    DC
    STATOI
    4200.0
    [m]
    DC
    STATOI
    4220.0
    [m]
    DC
    STATOI
    4479.0
    [m]
    DC
    STATOI
    4500.0
    [m]
    DC
    STATOI
    4521.0
    [m]
    DC
    STATOI
    4539.0
    [m]
    DC
    STATOI
    4560.0
    [m]
    DC
    STATOI
    4581.0
    [m]
    DC
    STATOI
    4599.0
    [m]
    DC
    STATOI
    4620.0
    [m]
    DC
    STATOI
    4641.0
    [m]
    DC
    STATOI
    4659.0
    [m]
    DC
    STATOI
    4680.0
    [m]
    DC
    STATOI
    4701.0
    [m]
    DC
    STATOI
    4770.0
    [m]
    SWC
    WESTLB
    4776.0
    [m]
    SWC
    WESTLB
    4797.0
    [m]
    DC
    STATOI
    4803.0
    [m]
    DC
    STATOI
    4808.0
    [m]
    SWC
    WESTLB
    4809.0
    [m]
    DC
    STATOI
    4815.0
    [m]
    DC
    STATOI
    4821.0
    [m]
    DC
    STATOI
    4824.0
    [m]
    DC
    WESTLB
    4827.0
    [m]
    DC
    STATOI
    4830.0
    [m]
    DC
    WESTLB
    4836.0
    [m]
    DC
    WESTLB
    4842.0
    [m]
    DC
    WESTLB
    4848.0
    [m]
    DC
    WESTLB
    4854.0
    [m]
    DC
    WESTLB
    4860.0
    [m]
    DC
    WESTLB
    4866.0
    [m]
    DC
    WESTLB
    4872.0
    [m]
    DC
    WESTLB
    4878.0
    [m]
    DC
    WESTLB
    4884.0
    [m]
    DC
    WESTLB
    4890.0
    [m]
    DC
    WESTLB
    4896.0
    [m]
    DC
    WESTLB
    4902.0
    [m]
    DC
    WESTLB
    4908.0
    [m]
    DC
    WESTLB
    4914.0
    [m]
    DC
    WESTLB
    4920.0
    [m]
    DC
    WESTLB
    4926.0
    [m]
    DC
    WESTLB
    4932.0
    [m]
    DC
    WESTLB
    4938.0
    [m]
    DC
    WESTLB
    4944.0
    [m]
    DC
    WESTLB
    4950.0
    [m]
    DC
    STATOI
    4950.0
    [m]
    DC
    WESTLB
    4956.0
    [m]
    DC
    WESTLB
    4962.0
    [m]
    DC
    WESTLB
    4968.0
    [m]
    DC
    WESTLB
    4974.0
    [m]
    DC
    WESTLB
    4980.0
    [m]
    DC
    WESTLB
    4986.0
    [m]
    DC
    WESTLB
    4992.0
    [m]
    DC
    WESTLB
    4998.0
    [m]
    DC
    STATOI
    4998.0
    [m]
    DC
    WESTLB
    5004.0
    [m]
    DC
    WESTLB
    5010.0
    [m]
    DC
    WESTLB
    5016.0
    [m]
    DC
    STATOI
    5016.0
    [m]
    DC
    WESTLB
    5022.0
    [m]
    DC
    WESTLB
    5028.0
    [m]
    DC
    WESTLB
    5034.0
    [m]
    DC
    WESTLB
    5040.0
    [m]
    DC
    WESTLB
    5046.0
    [m]
    DC
    WESTLB
    5052.0
    [m]
    DC
    WESTLB
    5058.0
    [m]
    DC
    WESTLB
    5064.0
    [m]
    DC
    WESTLB
    5070.0
    [m]
    DC
    WESTLB
    5076.0
    [m]
    DC
    WESTLB
    5082.0
    [m]
    DC
    WESTLB
    5088.0
    [m]
    DC
    WESTLB
    5094.0
    [m]
    DC
    WESTLB
    5100.0
    [m]
    DC
    WESTLB
    5106.0
    [m]
    DC
    STATOI
    5106.0
    [m]
    DC
    WESTLB
    5112.0
    [m]
    DC
    WESTLB
    5118.0
    [m]
    DC
    WESTLB
    5123.1
    [m]
    C
    WESTLB
    5125.7
    [m]
    C
    WESTLB
    5126.6
    [m]
    C
    WESTLB
    5128.6
    [m]
    C
    WESTLB
    5129.3
    [m]
    C
    WESTLB
    5131.3
    [m]
    C
    WESTLB
    5133.6
    [m]
    C
    WESTLB
    5135.0
    [m]
    C
    WESTLB
    5137.6
    [m]
    C
    WESTLB
    5139.8
    [m]
    C
    WESTLB
    5141.8
    [m]
    C
    WESTLB
    5143.7
    [m]
    C
    WESTLB
    5144.8
    [m]
    C
    WESTLB
    5146.4
    [m]
    C
    WESTLB
    5148.0
    [m]
    C
    WESTLB
    5150.2
    [m]
    C
    WESTLB