Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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05.11.2024 - 01:27
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33/12-9 S

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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.
    33/12-9 S
    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
    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.
    33/12-9
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    3D survey ST06M05-BIN inline 2052 & xline 1539
    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.
    Statoil Petroleum AS
    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.
    1378-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.
    71
    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,
    28.10.2011
    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.
    08.01.2012
    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.
    08.01.2014
    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.
    08.01.2014
    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
    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.
    134.5
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3812.0
    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).
    3746.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    19.5
    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.
    MIDDLE 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.
    DRAKE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 1' 46.89'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 56' 0.72'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6766724.25
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    442371.98
    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.
    6729

  • Wellbore history
    General
    Well 33/12-9 S was drilled about seven kilometres south of the 33/12-8 S oil/gas discovery on Skinfaks Sør, between the Gullfaks Sør field and the UK border in the northern part of the North Sea. Skinfaks Sør was proven in 2002 and consists of several smaller structures. The main objective of the well was to explore a possible commercial oil leg in the Jurassic Tarbert Formation of the Brent Group, with the secondary objective of proving commercial volumes of hydrocarbons in the Ness and Etive/Rannoch Formations of the Brent Group.
    Operations and results
    Well 33/12-9 S was spudded with the semi-submersible installation COSL Pioneer on 28 October 2011 and drilled to TD at 3812 m (3746 m TVD) in Middle Jurassic sediments of the Drake Formation. The well was drilled vertical down to 2400 m and deviated from there. The deviation from vertical was built to ca 19 deg at 3100 m. This deviation was kept to TD. The well was drilled with hi-vis/bentonite sweeps down to 947 m, with Glydril mud from 2078 m to 3340 m, and Versatec oil based mud from 3340 m to TD.
    Top of primary target, Tarbert Formation sandstone, was encountered at 3420 m (3375.2 m TVD). The Tarbert Formation contained light oil from top and down to 3501 m (3452 m TVD) with a most likely OWC just one meter deeper than that. Oil shows with petroleum odour continued down to 3538. Weaker shows on sandstones, typically patchy moderate bright yellow direct fluorescence and slow streaming/blooming blue white-yellow white cut fluorescence with blue white residual fluorescence, continued down to 3795 m. No oil shows were recorded above top reservoir level.
    No cores were cut. MDT oil samples were taken at 3428.6 m and 3498.5 m. The samples were lightly contaminated by the drilling fluid (6-8wt %).
    The well was permanently abandoned on 8 January 2012 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]
    2080.00
    3814.00

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2090.0
    [m]
    DC
    BIOSTRAT
    2110.0
    [m]
    DC
    BIOSTRAT
    2130.0
    [m]
    DC
    BIOSTRAT
    2150.0
    [m]
    DC
    BIOSTRAT
    2170.0
    [m]
    DC
    BIOSTRAT
    2190.0
    [m]
    DC
    BIOSTRAT
    2210.0
    [m]
    DC
    BIOSTRAT
    2230.0
    [m]
    DC
    BIOSTRAT
    2250.0
    [m]
    DC
    BIOSTRAT
    2270.0
    [m]
    DC
    BIOSTRAT
    2290.0
    [m]
    DC
    BIOSTRAT
    2310.0
    [m]
    DC
    BIOSTRAT
    2330.0
    [m]
    DC
    BIOSTRAT
    2350.0
    [m]
    DC
    BIOSTRAT
    2370.0
    [m]
    DC
    BIOSTRAT
    2390.0
    [m]
    DC
    BIOSTRAT
    2410.0
    [m]
    DC
    BIOSTRAT
    2430.0
    [m]
    DC
    BIOSTRAT
    2450.0
    [m]
    DC
    BIOSTRAT
    2470.0
    [m]
    DC
    BIOSTRAT
    2490.0
    [m]
    DC
    BIOSTRAT
    2510.0
    [m]
    DC
    BIOSTRAT
    2530.0
    [m]
    DC
    BIOSTRAT
    2550.0
    [m]
    DC
    BIOSTRAT
    2570.0
    [m]
    DC
    BIOSTRAT
    2590.0
    [m]
    DC
    BIOSTRAT
    2610.0
    [m]
    DC
    BIOSTRAT
    2630.0
    [m]
    DC
    BIOSTRAT
    2650.0
    [m]
    DC
    BIOSTRAT
    2670.0
    [m]
    DC
    BIOSTRAT
    2690.0
    [m]
    DC
    BIOSTRAT
    2710.0
    [m]
    DC
    BIOSTRAT
    2730.0
    [m]
    DC
    BIOSTRAT
    2750.0
    [m]
    DC
    BIOSTRAT
    2770.0
    [m]
    DC
    BIOSTRAT
    2790.0
    [m]
    DC
    BIOSTRAT
    2810.0
    [m]
    DC
    BIOSTRAT
    2830.0
    [m]
    DC
    BIOSTRAT
    2850.0
    [m]
    DC
    BIOSTRAT
    2870.0
    [m]
    DC
    BIOSTRAT
    2890.0
    [m]
    DC
    BIOSTRAT
    2910.0
    [m]
    DC
    BIOSTRAT
    2930.0
    [m]
    DC
    BIOSTRAT
    2950.0
    [m]
    DC
    BIOSTRAT
    2970.0
    [m]
    DC
    BIOSTRAT
    3010.0
    [m]
    DC
    BIOSTRAT
    3030.0
    [m]
    DC
    BIOSTRAT
    3040.0
    [m]
    DC
    BIOSTRAT
    3050.0
    [m]
    DC
    BIOSTRAT
    3060.0
    [m]
    DC
    BIOSTRAT
    3080.0
    [m]
    DC
    BIOSTRAT
    3090.0
    [m]
    DC
    BIOSTRAT
    3100.0
    [m]
    DC
    BIOSTRAT
    3110.0
    [m]
    DC
    BIOSTRAT
    3120.0
    [m]
    DC
    BIOSTRAT
    3130.0
    [m]
    DC
    BIOSTRAT
    3140.0
    [m]
    DC
    BIOSTRAT
    3150.0
    [m]
    DC
    BIOSTRAT
    3160.0
    [m]
    DC
    BIOSTRAT
    3170.0
    [m]
    DC
    BIOSTRAT
    3180.0
    [m]
    DC
    BIOSTRAT
    3190.0
    [m]
    DC
    BIOSTRAT
    3200.0
    [m]
    DC
    BIOSTRAT
    3210.0
    [m]
    DC
    BIOSTRAT
    3220.0
    [m]
    DC
    BIOSTRAT
    3230.0
    [m]
    DC
    BIOSTRAT
    3240.0
    [m]
    DC
    BIOSTRAT
    3250.0
    [m]
    DC
    BIOSTRAT
    3260.0
    [m]
    DC
    BIOSTRAT
    3270.0
    [m]
    DC
    BIOSTRAT
    3280.0
    [m]
    DC
    BIOSTRAT
    3290.0
    [m]
    DC
    BIOSTRAT
    3300.0
    [m]
    DC
    BIOSTRAT
    3310.0
    [m]
    DC
    BIOSTRAT
    3320.0
    [m]
    DC
    BIOSTRAT
    3330.0
    [m]
    DC
    BIOSTRAT
    3340.0
    [m]
    DC
    BIOSTRAT
    3559.0
    [m]
    DC
    BIOSTRAT
    3562.0
    [m]
    DC
    BIOSTRAT
    3565.0
    [m]
    DC
    BIOSTRAT
    3568.0
    [m]
    DC
    BIOSTRAT
    3571.0
    [m]
    DC
    BIOSTRAT
    3574.0
    [m]
    DC
    BIOSTRAT
    3577.0
    [m]
    DC
    BIOSTRAT
    3580.0
    [m]
    DC
    BIOSTRAT
    3583.0
    [m]
    DC
    BIOSTRAT
    3586.0
    [m]
    DC
    BIOSTRAT
    3589.0
    [m]
    DC
    BIOSTRAT
    3592.0
    [m]
    DC
    BIOSTRAT
    3595.0
    [m]
    DC
    BIOSTRAT
    3598.0
    [m]
    DC
    BIOSTRAT
    3601.0
    [m]
    DC
    BIOSTRAT
    3604.0
    [m]
    DC
    BIOSTRAT
    3607.0
    [m]
    DC
    BIOSTRAT
    3610.0
    [m]
    DC
    BIOSTRAT
    3613.0
    [m]
    DC
    BIOSTRAT
    3616.0
    [m]
    DC
    BIOSTRAT
    3619.0
    [m]
    DC
    BIOSTRAT
    3622.0
    [m]
    DC
    BIOSTRAT
    3625.0
    [m]
    DC
    BIOSTRAT
    3628.0
    [m]
    DC
    BIOSTRAT
    3631.0
    [m]
    DC
    BIOSTRAT
    3634.0
    [m]
    DC
    BIOSTRAT
    3637.0
    [m]
    DC
    BIOSTRAT
    3640.0
    [m]
    DC
    BIOSTRAT
    3643.0
    [m]
    DC
    BIOSTRAT
    3646.0
    [m]
    DC
    BIOSTRAT
    3649.0
    [m]
    DC
    BIOSTRAT
    3652.0
    [m]
    DC
    BIOSTRAT
    3655.0
    [m]
    DC
    BIOSTRAT
    3658.0
    [m]
    DC
    BIOSTRAT
    3661.0
    [m]
    DC
    BIOSTRAT
    3664.0
    [m]
    DC
    BIOSTRAT
    3667.0
    [m]
    DC
    BIOSTRAT
    3670.0
    [m]
    DC
    BIOSTRAT
    3673.0
    [m]
    DC
    BIOSTRAT
    3676.0
    [m]
    DC
    BIOSTRAT
    3679.0
    [m]
    DC
    BIOSTRAT
    3682.0
    [m]
    DC
    BIOSTR
    3685.0
    [m]
    DC
    BIOSTR
    3688.0
    [m]
    DC
    BIOSTR
    3691.0
    [m]
    DC
    BIOSTR
    3694.0
    [m]
    DC
    BIOSTR
    3697.0
    [m]
    DC
    BIOSTR
    3700.0
    [m]
    DC
    BIOSTR
    3703.0
    [m]
    DC
    BIOSTR
    3706.0
    [m]
    DC
    BIOSTR
    3709.0
    [m]
    DC
    BIOSTR
    3712.0
    [m]
    DC
    BIOSTR
    3715.0
    [m]
    DC
    BIOSTR
    3718.0
    [m]
    DC
    BIOSTR
    3721.0
    [m]
    DC
    BIOSTR
    3724.0
    [m]
    DC
    BIOSTR
    3727.0
    [m]
    DC
    BIOSTR
    3730.0
    [m]
    DC
    BIOSTR
    3733.0
    [m]
    DC
    BIOSTR
    3736.0
    [m]
    DC
    BIOSTR
    3739.0
    [m]
    DC
    BIOSTR
    3742.0
    [m]
    DC
    BIOSTR
    3745.0
    [m]
    DC
    BIOSTR
    3748.0
    [m]
    DC
    BIOSTR
    3751.0
    [m]
    DC
    BIOSTR
    3754.0
    [m]
    DC
    BIOSTR
    3757.0
    [m]
    DC
    BIOSTR
    3763.0
    [m]
    DC
    BIOSTR
    3766.0
    [m]
    DC
    BIOSTR
    3768.0
    [m]
    DC
    BIOSTR
    3769.0
    [m]
    DC
    BIOSTR
    3772.0
    [m]
    DC
    BIOSTR
    3775.0
    [m]
    DC
    BIOSTR
    3778.0
    [m]
    DC
    BIOSTR
    3781.0
    [m]
    DC
    BIOSTR
    3784.0
    [m]
    DC
    BIOSTR
    3787.0
    [m]
    DC
    BIOSTR
    3790.0
    [m]
    DC
    BIOSTR
    3793.0
    [m]
    DC
    BIOSTR
    3796.0
    [m]
    DC
    BIOSTR
    3799.0
    [m]
    DC
    BIOSTR
    3805.0
    [m]
    DC
    BIOSTR
    3808.0
    [m]
    DC
    BIOSTR
    3811.0
    [m]
    DC
    BIOSTR
    3814.0
    [m]
    DC
    BIOSTR

  • Lithostratigraphy

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL USIT
    2900
    3336
    MDT SAMPLE
    3383
    3450
    MWD - ARCVRES6 POWER TELE
    3339
    3812
    MWD - ARCVRES8 VADN8 PD TELE
    2071
    3340
    MWD - ARCVRES9 POWER
    947
    2078
    MWD - ARCVRS9 TELE
    212
    947
    PEX DSI AIT
    3338
    3804
    PS HY GR
    3378
    3680

  • 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
    208.0
    36
    212.0
    0.00
    LOT
    SURF.COND.
    20
    938.5
    26
    947.0
    1.38
    LOT
    INTERM.
    13 3/8
    2071.5
    17 1/2
    2078.0
    1.86
    LOT
    INTERM.
    9 5/8
    3339.0
    12 1/4
    3340.0
    2.04
    LOT
    OPEN HOLE
    3812.0
    8 1/2
    3812.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1510
    1.35
    14.0
    KCl/Polymer/Glycol
    2106
    1.36
    33.0
    Versatec
    2780
    1.52
    36.0
    Versatec
    3222
    1.51
    37.0
    Versatec
    3318
    1.62
    47.0
    Versatec
    3340
    1.59
    44.0
    Versatec
    3340
    1.52
    36.0
    Versatec
    3343
    1.59
    44.0
    Versatec
    3794
    1.62
    47.0
    Versatec
    3812
    1.62
    31.0
    Versatec
    3812
    1.62
    47.0
    Versatec