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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6603/12-1

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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.
    6603/12-1
    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
    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
    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.
    6603/12-1
    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.
    A/S Norske Shell
    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.
    1215-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.
    87
    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,
    26.03.2009
    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.
    20.06.2009
    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.
    20.06.2011
    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.
    20.06.2009
    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.
    20.06.2011
    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 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.
    SPRINGAR 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.
    1376.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3830.0
    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).
    3830.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    0.8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    143
    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 CRETACEOUS
    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.
    SPRINGAR FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    66° 8' 52.35'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 56' 29.67'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7336898.26
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    542488.15
    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.
    5985

  • Wellbore history
    General
    Well 6603/12-1 was drilled as an exploration wildcat well in the Norwegian Atlantic Margin (Vøring Basin). The main objectives of the well were to prove the presence and quality of reservoir and hydrocarbons in the Late Cretaceous (K98 - Maastrichtian) Springar Formation Sandstone.
    Operations and results
    A 12 1/4" pilot hole (6603/12-U-1) was spudded 63 m to the southwest of the main hole in order to evaluate pore pressures, assess the risk of shallow water flow and to gain insight into the wellbore stability in the interval down to the 20" casing depth in the main hole. The pilot was drilled to 2195 m into the Brygge Formation and below the Opal A to CT transition, without encountering shallow geohazards. The water temperature at seafloor, measured by means of a ROV, was -1 deg C.
    Wildcat well 6603/12-1 was spudded with the semi-submersible installation Leiv Eriksson on 26 March 2009 and drilled to TD at 3830 m in the Late Cretaceous Springar Formation. No shallow gas was encountered. The well was drilled with Seawater and hi-vis sweeps down to 2359 m, with Glydril mud from 2359 m to 3509 m, and with Paratherm oil based mud from 3509 m to TD.
    The well penetrated rocks of Quaternary, Tertiary and Cretaceous age. Top Maastrichtian Springar Formation came in at 3505 m with the target Springar Formation sandstone member at 3704 m, 40 m shallower than prognosed. The Springar Formation sandstone member was gas-bearing with a 15 m gas column from the top down to 3720 m. Poor pressure data did not allow estimation of the true OWC.
    One 18m core was taken from the reservoir interval (3712.7 - 3730.7 m) with 100% recovery. An extensive wire line program was carried out successfully after reaching TD. Due to concerns about stability of the planned water based mud a thorough temperature logging was conducted, using the Schlumberger Environmental Measurement Sonde (EMS) tool. Repeated measurements near TD with up to 128 hrs waiting time after last circulation gave a Horner corrected temperature of 139 deg C at 3736.5 m (2335.5 m TVD below sea floor). This gives a linear temperature gradient from sea bed of 60 deg C/km, a record in Norwegian Exploration wells. MDT fluid samples were successfully taken in the Springar Formation sandstone member at 3705.7 m (gas), at 3720.0 m (gas), and at 3730.24 m (water).
    The well was permanently abandoned on 20 June 2009 as a gas 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]
    2360.00
    3830.00

  • 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
    3714.0
    3732.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    18.5
    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
    1512.0
    36
    1517.0
    0.00
    LOT
    SURF.COND.
    20
    2347.0
    26
    2359.0
    1.25
    LOT
    INTERM.
    13 5/8
    2602.0
    17 1/2
    2608.0
    1.36
    LOT
    INTERM.
    9 5/8
    3497.0
    12 1/4
    3500.0
    1.46
    LOT
    OPEN HOLE
    3820.0
    8 1/2
    3820.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    EMS PPC1 PPC2
    2602
    3467
    MDT
    3705
    3720
    MDT MINI-DST
    3705
    3730
    MDT MINI-DST
    3705
    3730
    MSCT
    3510
    3745
    MWD - DI GR RES APWD DEN NEU
    2608
    3830
    MWD LWD - DI GR RES APWD
    1517
    2608
    OBMI MSIP PPC
    3393
    3825
    PEX MSIP EMS
    1400
    3474
    RT SCAN PEX HNGS CMR+
    3287
    3828
    VSP
    1376
    3790

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    1400
    1400
    1673
    2100
    2100
    2842
    2842
    3070
    3505
    3505
    3704
    3740

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.40

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1398
    1.02
    Seawater
    2332
    1.18
    Seawater
    2364
    1.03
    Glydril
    2608
    1.18
    KPM KCl Polymer
    2616
    1.25
    Glydril DW
    3420
    1.28
    Glydril DWHT
    3466
    1.18
    Glydril DW
    3466
    1.31
    Paratherm
    3497
    1.26
    Glydril DWHT
    3500
    1.27
    Glydril DWHT
    3714
    1.30
    Paratherm
    3723
    1.30
    Paratherm
    3830
    1.30
    Paratherm

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2770.0
    [m]
    DC
    PETROSTA
    2800.0
    [m]
    DC
    PETROS
    2830.0
    [m]
    DC
    PETROS
    2860.0
    [m]
    DC
    PETROS
    3100.0
    [m]
    DC
    PETROS
    3510.0
    [m]
    SWC
    PETROS
    3513.5
    [m]
    SWC
    PETROS
    3531.0
    [m]
    SWC
    PETROS
    3533.5
    [m]
    SWC
    PETROS
    3563.5
    [m]
    SWC
    PETROS
    3671.2
    [m]
    SWC
    PETROS
    3687.5
    [m]
    SWC
    PETROS
    3691.0
    [m]
    SWC
    PETROS
    3696.5
    [m]
    SWC
    PETROS
    3697.5
    [m]
    SWC
    PETROS
    3700.5
    [m]
    SWC
    PETROS
    3703.5
    [m]
    SWC
    PETROS
    3704.2
    [m]
    SWC
    PETROS
    3707.0
    [m]
    SWC
    PETROS
    3714.7
    [m]
    C
    PETROS
    3716.6
    [m]
    C
    PETROS
    3718.1
    [m]
    C
    PETROS
    3718.5
    [m]
    C
    PETROS
    3718.9
    [m]
    C
    PETROS
    3719.2
    [m]
    C
    PETROS
    3719.6
    [m]
    C
    PETROS
    3720.5
    [m]
    C
    PETROS
    3722.0
    [m]
    C
    PETROS
    3722.3
    [m]
    C
    PETROS
    3723.9
    [m]
    C
    PETROS
    3724.3
    [m]
    C
    PETROS
    3725.9
    [m]
    C
    PETROS
    3726.9
    [m]
    C
    PETROS
    3727.6
    [m]
    C
    PETROS
    3727.8
    [m]
    C
    PETROS
    3728.5
    [m]
    C
    PETROS
    3730.1
    [m]
    C
    PETROS
    3732.5
    [m]
    C
    PETROS
    3736.5
    [m]
    SWC
    PETROS
    3738.0
    [m]
    SWC
    PETROS
    3744.0
    [m]
    SWC
    PETROS
    3747.5
    [m]
    SWC
    PETROS
    3758.5
    [m]
    SWC
    PETROS
    3810.0
    [m]
    SWC
    PETROS