Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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26.11.2024 - 01:27
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6608/10-12

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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.
    6608/10-12
    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
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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
    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.
    6608/10-12
    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.
    StatoilHydro ASA
    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.
    1204-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.
    64
    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,
    19.10.2008
    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.
    21.12.2008
    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.
    21.12.2010
    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.
    23.12.2010
    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.
    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.
    EARLY CRETACEOUS
    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.
    LYSING FM
    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.
    ÅRE FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    22.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    338.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3180.0
    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).
    3179.3
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    3.8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    104
    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.
    RED 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° 13' 45.69'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    8° 18' 45.7'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7345831.65
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    469084.89
    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.
    5949

  • Wellbore history
    General
    Well 6608/10-12 was drilled on the Dompap structure, about 17 kilometres north-northeast of the Norne field in the Norwegian Sea. The primary objective was to prove hydrocarbons in the Jurassic sandstones of the Båt group, Åre 2 and Åre 1 formations. Secondary objective in the main bore was to test for hydrocarbons in the Cretaceous Måke prospect, comprising Cretaceous Intra-Lange/Lysing Formation sandstone.
    Operations and results
    Well 6608/10-12 was spudded with the semi-submersible installation Ocean Vanguard on 19 October 2008 and drilled to TD at 3180 in the Late Triassic Red beds. No shallow gas was observed. Operations were delayed a number of times due to bad weather, but no significant operational problems were encountered. The well was drilled with spud mud down to 1415 m and with KCl/polymer/GEM GP mud from 1415 m to TD.
    The well penetrated rocks of Quaternary, Tertiary, Cretaceous, Jurassic, and Triassic age. The Lysing Formation was penetrated at 2522 m to 2557 m with four meters of net oil bearing sandstone in the interval 2537 to 2542 m. No OWC was observed. Below the Lysing Formation a 42 m thick section of intra Lange Formation (middle Aptian) water bearing sandstone was encountered. Several Intra-Melke Formation sandstone units were encountered in the interval 2688 to 2738 m. These sandstones were water wet without shows. The main Åre reservoir section was encountered at 2770 m, 4 m deeper than prognosis. Oil was proven in the Åre 2 Formation. Pressure points indicated that the reservoir was oil-filled down to the base of Åre 2. No definitive OWC was observed.
    Three cores were cut from 2777 to 2826.9 m in the Åre 2 Formation; a fourth core was cut from 2827 to 2845 m in the Åre 2 and Åre 1 Formation and a fifth core from 2845 to 2872 m in the Åre 1 Formation. Pressure points were taken in the Lysing Formation and in the Åre 1 and Åre 2 formations. MDT fluid samples were taken at 2539 m in the Lysing Formation (oil), at 2773 m in the Åre 2 Formation (oil), 2785.5 m in the Åre 2 Formation (oil), 2799.2 m in the Åre 2 Formation (oil), 2834.6 m in the Åre 2/1 formation boundary (water), 2836.7 m in the Åre 1 Formation (water and oil), and at 2846.9 m in the Åre 1 Formation (water). The oil / water mix sample taken at the top of Åre 1, indicate a potential transition zone. The Åre 2 sandstones was found to have a permeability range of 0.03 mD to 9000 mD with a porosity of 21 %. The numerous thin sandstone beds of the Åre 1 Formation shows a permeability range of 0.01 mD to 17000 mD with a porosity of 23 %.
    Temperatures were measured on MDT but were not suitable for Horner correction. The temperature measured after the longest period without circulation, 177.5 hours, was 97 deg C, at 2875 m. This gives a gradient of 37 deg C/km from 4 deg C at seafloor.
    A decision was taken to drill a sidetrack in order to find the OWC and prove enough hydrocarbon volumes for a commercial development. The well bore was plugged back and abandoned on 21 December 2008 as an oil discovery.
    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]
    1420.00
    3178.00

  • 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
    2777.0
    2797.4
    [m ]
    2
    2797.4
    2811.8
    [m ]
    3
    2812.4
    2826.6
    [m ]
    4
    2827.0
    2845.2
    [m ]
    5
    2845.2
    2870.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    92.0
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    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
    408.0
    36
    412.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    1400.0
    17 1/2
    1415.0
    1.57
    LOT
    INTERM.
    9 5/8
    2499.0
    12 1/4
    2500.0
    1.96
    LOT
    OPEN HOLE
    3180.0
    8 1/2
    3180.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMI XPT MSIP EDTC ACTS ECRD
    1650
    3160
    MDT
    2785
    2539
    MDT
    2834
    2834
    MDT MINI DST
    2773
    2836
    MDT MINI DST
    2799
    2799
    MDT SAMPLE
    2846
    2846
    MDT XPT GR
    2537
    3125
    MWD LWD - PP ARCVRS8 GR RES PWD
    412
    3180
    MWD LWD - TELE DIR
    362
    412
    PEX CMR
    2499
    2950
    PEX CMR HRLA ACTS ECRD EDTC ECS
    2499
    3169
    VSP GR ACTS
    405
    2945

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1415
    1.35
    29.0
    Spud Mud
    1415
    1.39
    15.0
    KCl/Polymer/Glycol
    1415
    1.35
    29.0
    Spud Mud
    1480
    1.45
    15.0
    KCl/Polymer/Glycol
    1584
    1.48
    20.0
    KCl/Polymer/Glycol
    1760
    1.50
    24.0
    KCl/Polymer/Glycol
    2145
    1.45
    26.0
    KCl/Polymer/GEM
    2305
    1.50
    20.0
    KCl/Polymer/Glycol
    2430
    1.50
    18.0
    KCl/Polymer/Glycol
    2500
    1.51
    18.0
    KCl/Polymer/Glycol
    2696
    1.35
    19.0
    KCl/Polymer/Glycol
    2788
    1.35
    21.0
    KCl/Polymer/Glycol
    2796
    1.35
    18.0
    KCl/Polymer/Glycol
    3180
    1.37
    27.0
    KCl/Polymer/GEM