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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30/9-21 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.
    30/9-21 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).
    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
    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
    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.
    30/9-21
    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 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.
    1176-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.
    49
    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,
    13.03.2008
    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.
    30.04.2008
    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.
    30.04.2010
    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.
    30.04.2010
    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/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.
    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.
    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.
    TARBERT FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    26.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    106.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4090.0
    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).
    3463.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    50.6
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    132
    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.
    NESS FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 25' 29.12'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 41' 38.47'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6698913.45
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    483151.56
    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.
    5800

  • Wellbore history
    General
    Well 30/9-21 S was drilled in the Oseberg Field area in the northern Viking Graben. The objective was to prove commercial amount of hydrocarbons in the Delta S2 prospect in Middle Jurassic, middle Tarbert Formation sandstone, and to collect all data needed for development of the prospect.
    Operations and results
    Wildcat well 30/9-21 S was spudded with the semi-submersible installation Transocean Winner on 13 March 2008 and drilled to TD at 4090 m (3463 m TVD) in the Middle Jurassic Ness Formation. No shallow gas was observed by the ROV at the wellhead or by the MWD while drilling the 36" hole and the 20" hole. The well was drilled vertical down to 1150 m, and then deviated with inclination up to 50 deg at 3300 m. While drilling the 12 1/4" section at 1320 m operations were suspended for a day because a trawler's fishing net had become snagged around anchor chain #7. The well was drilled with sea water and bentonite sweeps down to 850 m, with sea water/bentonite sweeps and Glydril mud from 850 m to m to 2130 m, and with Paratech oil based mud from 2130 m to TD. Chromatographic analyses of mud filtrate from the well (PVT report) indicated that the base oil consist of mainly n-alkanes in the range C13 to C20.
    The well penetrated rocks of Quaternary, Tertiary, and Cretaceous and Jurassic age. The well encountered top Tarbert Formation at 3774 m (3204.9 m TVD) and penetrated the target Middle Tarbert reservoir section at 3808 m (3231.2 m TVD RKB), 29 m deeper than prognosed. Wire line logs and pressure data proved an oil bearing interval from 3808 m (3231.2 m TVD) down to an OWC at 3856 m (3268 m TVD).
    No cores were cut in this wellbore. MDT wire line fluid samples were taken at 3822.5 m (oil), 3852.0 m (oil), and at 3860.5 m (water). Contamination of base oil from the mud was analysed to be from 7% to 20%, with the least contamination in the samples from 3852.0 m.
    The well was plugged back permanently abandoned on 30 April 2008 as an oil and gas discovery.
    Testing
    No drill stem test was performed.
    Reclassification
    On 9 September 2016 the well was reclassified as an appraisal well for the discovery "30/9-19" from 1998.

  • 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]
    1230.00
    4090.00

  • 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
    180.0
    36
    182.0
    0.00
    LOT
    SURF.COND.
    20
    1215.0
    26
    1222.0
    1.62
    LOT
    INTERM.
    13 3/8
    2123.0
    17 1/2
    2130.0
    1.72
    LOT
    INTERM.
    9 5/8
    3671.0
    12 1/4
    3680.0
    1.60
    LOT
    OPEN HOLE
    4090.0
    8 1/2
    4090.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT PEX ECS PPC MSIP
    3671
    4096
    LWD - EWR DGR
    182
    3158
    MDT
    3777
    3860
    XPT
    3809
    4036

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.28
    pdf
    0.62

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1247
    1.30
    22.0
    Glydril
    1325
    1.37
    27.0
    Glydril
    1494
    1.39
    26.0
    Glydril
    1698
    1.50
    31.0
    Glydril
    1720
    1.50
    31.0
    Glydril
    1873
    1.50
    29.0
    Glydril
    2059
    1.50
    30.0
    Glydril
    2131
    1.52
    28.0
    Glydril
    2188
    1.39
    23.0
    Paratec
    2445
    1.39
    26.0
    Paratec
    2906
    1.41
    29.0
    Paratec
    2930
    1.41
    30.0
    Paratec
    3136
    1.41
    28.0
    Paratec
    3255
    1.41
    34.0
    Paratec
    3379
    1.41
    34.0
    Paratec
    3521
    1.30
    32.0
    Paratec
    3680
    1.43
    38.0
    Paratec
    4090
    1.52
    38.0
    Paratec

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1230.0
    [m]
    DC
    FUGRO
    1270.0
    [m]
    DC
    FUGRO
    1310.0
    [m]
    DC
    FUGRO
    1370.0
    [m]
    DC
    FUGRO
    1430.0
    [m]
    DC
    FUGRO
    1470.0
    [m]
    DC
    FUGRO
    1530.0
    [m]
    DC
    FUGRO
    1590.0
    [m]
    DC
    FUGRO
    1630.0
    [m]
    DC
    FUGRO
    1690.0
    [m]
    DC
    FUGRO
    1730.0
    [m]
    DC
    FUGRO
    1770.0
    [m]
    DC
    FUGRO
    1790.0
    [m]
    DC
    FUGRO
    1830.0
    [m]
    DC
    FUGRO
    1850.0
    [m]
    DC
    FUGRO
    1890.0
    [m]
    DC
    FUGRO
    1930.0
    [m]
    DC
    FUGRO
    1990.0
    [m]
    DC
    FUGRO
    2030.0
    [m]
    DC
    FUGRO
    2090.0
    [m]
    DC
    FUGRO
    2140.0
    [m]
    DC
    FUGRO
    2160.0
    [m]
    DC
    FUGRO
    2190.0
    [m]
    DC
    FUGRO
    2219.0
    [m]
    DC
    FUGRO
    2230.0
    [m]
    DC
    FUGRO
    2260.0
    [m]
    DC
    FUGRO
    2280.0
    [m]
    DC
    FUGRO
    2310.0
    [m]
    DC
    FUGRO
    2340.0
    [m]
    DC
    FUGRO
    2360.0
    [m]
    DC
    FUGRO
    2390.0
    [m]
    DC
    FUGRO
    2420.0
    [m]
    DC
    FUGRO
    2450.0
    [m]
    DC
    FUGRO
    2480.0
    [m]
    DC
    FUGRO
    2510.0
    [m]
    DC
    FUGRO
    2540.0
    [m]
    DC
    FUGRO
    2570.0
    [m]
    DC
    FUGRO
    2600.0
    [m]
    DC
    FUGRO
    2630.0
    [m]
    DC
    FUGRO
    2690.0
    [m]
    DC
    FUGRO
    2740.0
    [m]
    DC
    FUGRO
    2770.0
    [m]
    DC
    FUGRO
    2830.0
    [m]
    DC
    FUGRO
    2880.0
    [m]
    DC
    FUGRO
    2940.0
    [m]
    DC
    FUGRO
    3000.0
    [m]
    DC
    FUGRO
    3070.0
    [m]
    DC
    FUGRO
    3130.0
    [m]
    DC
    FUGRO
    3190.0
    [m]
    DC
    FUGRO
    3220.0
    [m]
    DC
    FUGRO
    3250.0
    [m]
    DC
    FUGRO
    3280.0
    [m]
    DC
    FUGRO
    3310.0
    [m]
    DC
    FUGRO
    3350.0
    [m]
    DC
    FUGRO
    3380.0
    [m]
    DC
    FUGRO
    3410.0
    [m]
    DC
    FUGRO
    3440.0
    [m]
    DC
    FUGRO
    3470.0
    [m]
    DC
    FUGRO
    3490.0
    [m]
    DC
    FUGRO
    3520.0
    [m]
    DC
    FUGRO
    3550.0
    [m]
    DC
    FUGRO
    3580.0
    [m]
    DC
    FUGRO
    3610.0
    [m]
    DC
    FUGRO
    3640.0
    [m]
    DC
    FUGRO
    3670.0
    [m]
    DC
    FUGRO
    3683.0
    [m]
    DC
    FUGRO
    3686.0
    [m]
    DC
    FUGRO
    3689.0
    [m]
    DC
    FUGRO
    3692.0
    [m]
    DC
    FUGRO
    3695.0
    [m]
    DC
    FUGRO
    3698.0
    [m]
    DC
    FUGRO
    3701.0
    [m]
    DC
    FUGRO
    3704.0
    [m]
    DC
    FUGRO
    3707.0
    [m]
    DC
    FUGRO
    3710.0
    [m]
    DC
    FUGRO
    3713.0
    [m]
    DC
    FUGRO
    3716.0
    [m]
    DC
    FUGRO
    3719.0
    [m]
    DC
    FUGRO
    3722.0
    [m]
    DC
    FUGRO
    3725.0
    [m]
    DC
    FUGRO
    3728.0
    [m]
    DC
    FUGRO
    3731.0
    [m]
    DC
    FUGRO
    3734.0
    [m]
    DC
    FUGRO
    3737.0
    [m]
    DC
    FUGRO
    3740.0
    [m]
    DC
    FUGRO
    3743.0
    [m]
    DC
    FUGRO
    3746.0
    [m]
    DC
    FUGRO
    3749.0
    [m]
    DC
    FUGRO
    3752.0
    [m]
    DC
    FUGRO
    3755.0
    [m]
    DC
    FUGRO
    3758.0
    [m]
    DC
    FUGRO
    3761.0
    [m]
    DC
    FUGRO
    3764.0
    [m]
    DC
    FUGRO
    3767.0
    [m]
    DC
    FUGRO
    3770.0
    [m]
    DC
    FUGRO
    3773.0
    [m]
    DC
    FUGRO
    3776.0
    [m]
    DC
    FUGRO
    3779.0
    [m]
    DC
    FUGRO
    3782.0
    [m]
    DC
    FUGRO
    3785.0
    [m]
    DC
    FUGRO
    3788.0
    [m]
    DC
    FUGRO
    3791.0
    [m]
    DC
    FUGRO
    3794.0
    [m]
    DC
    FUGRO
    3797.0
    [m]
    DC
    FUGRO
    3800.0
    [m]
    DC
    FUGRO
    3803.0
    [m]
    DC
    FUGRO
    3806.0
    [m]
    DC
    FUGRO
    3809.0
    [m]
    DC
    FUGRO
    3812.0
    [m]
    DC
    FUGRO
    3815.0
    [m]
    DC
    FUGRO
    3818.0
    [m]
    DC
    FUGRO
    3821.0
    [m]
    DC
    FUGRO
    3824.0
    [m]
    DC
    FUGRO
    3827.0
    [m]
    DC
    FUGRO
    3830.0
    [m]
    DC
    FUGRO
    3833.0
    [m]
    DC
    FUGRO
    3836.0
    [m]
    DC
    FUGRO
    3839.0
    [m]
    DC
    FUGRO
    3842.0
    [m]
    DC
    FUGRO
    3845.0
    [m]
    DC
    FUGRO
    3890.0
    [m]
    DC
    FUGRO
    3893.0
    [m]
    DC
    FUGRO
    3896.0
    [m]
    DC
    FUGRO
    3899.0
    [m]
    DC
    FUGRO
    3902.0
    [m]
    DC
    FUGRO
    3905.0
    [m]
    DC
    FUGRO
    3908.0
    [m]
    DC
    FUGRO
    3911.0
    [m]
    DC
    FUGRO
    3914.0
    [m]
    DC
    FUGRO
    3920.0
    [m]
    DC
    FUGRO
    3926.0
    [m]
    DC
    FUGRO
    3929.0
    [m]
    DC
    FUGRO
    3932.0
    [m]
    DC
    FUGRO
    3935.0
    [m]
    DC
    FUGRO
    3938.0
    [m]
    DC
    FUGRO
    3941.0
    [m]
    DC
    FUGRO
    3944.0
    [m]
    DC
    FUGRO
    3947.0
    [m]
    DC
    FUGRO
    3950.0
    [m]
    DC
    FUGRO
    3953.0
    [m]
    DC
    FUGRO
    3956.0
    [m]
    DC
    FUGRO
    3959.0
    [m]
    DC
    FUGRO
    3962.0
    [m]
    DC
    FUGRO
    3965.0
    [m]
    DC
    FUGRO
    3968.0
    [m]
    DC
    FUGRO
    3971.0
    [m]
    DC
    FUGRO
    3974.0
    [m]
    DC
    FUGRO
    3977.0
    [m]
    DC
    FUGRO
    3980.0
    [m]
    DC
    FUGRO
    3983.0
    [m]
    DC
    FUGRO
    3986.0
    [m]
    DC
    FUGRO
    3989.0
    [m]
    DC
    FUGRO
    3992.0
    [m]
    DC
    FUGRO
    3995.0
    [m]
    DC
    FUGRO
    3998.0
    [m]
    DC
    FUGRO
    4001.0
    [m]
    DC
    FUGRO
    4004.0
    [m]
    DC
    FUGRO
    4007.0
    [m]
    DC
    FUGRO
    4010.0
    [m]
    DC
    FUGRO
    4013.0
    [m]
    DC
    FUGRO
    4016.0
    [m]
    DC
    FUGRO
    4019.0
    [m]
    DC
    FUGRO
    4022.0
    [m]
    DC
    FUGRO
    4025.0
    [m]
    DC
    FUGRO
    4028.0
    [m]
    DC
    FUGRO
    4031.0
    [m]
    DC
    FUGRO
    4034.0
    [m]
    DC
    FUGRO
    4037.0
    [m]
    DC
    FUGRO
    4040.0
    [m]
    DC
    FUGRO
    4043.0
    [m]
    DC
    FUGRO
    4046.0
    [m]
    DC
    FUGRO
    4049.0
    [m]
    DC
    FUGRO
    4052.0
    [m]
    DC
    FUGRO
    4055.0
    [m]
    DC
    FUGRO
    4058.0
    [m]
    DC
    FUGRO
    4061.0
    [m]
    DC
    FUGRO
    4064.0
    [m]
    DC
    FUGRO
    4067.0
    [m]
    DC
    FUGRO
    4070.0
    [m]
    DC
    FUGRO
    4073.0
    [m]
    DC
    FUGRO
    4076.0
    [m]
    DC
    FUGRO
    4079.0
    [m]
    DC
    FUGRO
    4082.0
    [m]
    DC
    FUGRO
    4085.0
    [m]
    DC
    FUGRO
    4088.0
    [m]
    DC
    FUGRO
    4090.0
    [m]
    DC
    FUGRO