Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.12.2024 - 01:25
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24/9-10 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.
    24/9-10 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
    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.
    NORTH 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.
    24/9-10
    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.
    Marathon Petroleum Norge 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.
    1337-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.
    28
    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,
    06.01.2011
    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.
    02.02.2011
    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.
    02.02.2013
    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.
    02.02.2013
    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.
    LATE PALEOCENE
    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.
    HERMOD 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.
    118.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2339.0
    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).
    2187.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    42.2
    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 PALEOCENE
    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.
    LISTA FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    59° 16' 34.73'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 55' 36.13'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6571465.01
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    438830.01
    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.
    6531

  • Wellbore history
    General
    Well 24/9-10 S was drilled on the Caterpillar prospect ca 7.5 km south-southeast of the Bøyla field in the South Viking Graben. The primary objective was to establish the presence and phase of hydrocarbon resources in the Paleocene Hermod Formation reservoir. Contingent upon discovery, the optional sidetrack well (10 A) would be drilled to further evaluate hydrocarbon resources contained within the Caterpillar prospect.
    Operations and results
    Wildcat well 24/9-10 S was spudded with the semi-submersible installation Transocean Winner on 6 January 2011 and drilled to TD at 2339 m (2187 m TVD) in the Late Paleocene Lista Formation. Drilling proceeded without significant problems. The well was drilled with seawater, hi-vis sweeps, and spud mud down to 507 m, with Glydril mud from 507 m to 975 m, and with Versatec oil based mud from 975 m to TD.
    The well penetrated top Hermod Formation at 2211 m (2088 m TVD) 10 m TVD shallower than prognosed. The Hermod Formation had 35 m of net reservoir quality sands, predominantly fine occasionally medium quartz aggregate with conglomeratic material, some calcite cemented stringers and non net shale beds. Average porosity in the reservoir of 24.6% was determined from the density log. An oil down to was interpreted at 2239 m (2110 m TVD) above which 17.3 m (13.0 m TVD) net of movable hydrocarbons were interpreted within the Hermod Formation with an average net water saturation of 46.2%. The oil leg was confirmed by the pressure gradient. Below the interpreted oil down to the sand development is much more inter-bedded and fine grained, and few pressure points could be taken here. A water sample was taken at 2253 m, but a residual oil column is interpreted throughout the Hermod Formation.
    Uniform light brown oil shows were described throughout the oil bearing reservoir both on the cuttings and the core. Continuous natural fluorescence, stain, and petroleum odour was seen further down on the cores to 2264 m, and also at the base of core 2 at 2278 m. Otherwise the oil based drilling mud produced a background weak dull yellow direct fluorescence and faint cut fluorescence. Combined with overbalanced drilling this masked virtually all natural fluorescence (shows) on cuttings from the well.
    Two cores were cut in the Hermod Formation from 2223 m to 2278 m. An MDT oil sample was taken at 2222.6 m.
    On 2 February 2011 the well was cemented back for an appraisal sidetrack. The well bore is classified 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]
    980.00
    2339.00

  • 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
    2223.0
    2248.8
    [m ]
    2
    2250.0
    2277.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    53.6
    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
    193.0
    36
    196.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    961.0
    17 1/2
    975.0
    0.00
    LOT
    INTERM.
    9 5/8
    2181.0
    12 1/4
    2187.0
    1.55
    LOT
    OPEN HOLE
    2339.0
    8 1/2
    2339.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    MDT GR
    2339
    2339
    MWD - ARC PDX RAB
    196
    2339
    MWD - SLB PP DIR
    144
    196
    VSP GR
    2339
    2339

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    144
    445
    867
    1248
    2063
    2063
    2175
    2211
    2299

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.05
    pdf
    0.43

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1220.0
    [m]
    DC
    CGG
    1250.0
    [m]
    DC
    CGG
    1280.0
    [m]
    DC
    CGG
    1340.0
    [m]
    DC
    CGG
    1370.0
    [m]
    DC
    CGG
    1400.0
    [m]
    DC
    CGG
    1430.0
    [m]
    DC
    CGG
    1490.0
    [m]
    DC
    CGG
    1520.0
    [m]
    DC
    CGG
    1550.0
    [m]
    DC
    CGG
    1580.0
    [m]
    DC
    CGG
    1640.0
    [m]
    DC
    CGG
    1700.0
    [m]
    DC
    CGG
    1760.0
    [m]
    DC
    CGG
    1790.0
    [m]
    DC
    CGG
    1820.0
    [m]
    DC
    CGG
    1850.0
    [m]
    DC
    CGG
    1880.0
    [m]
    DC
    CGG
    1910.0
    [m]
    DC
    CGG
    1940.0
    [m]
    DC
    CGG
    1970.0
    [m]
    DC
    CGG
    2000.0
    [m]
    DC
    CGG
    2030.0
    [m]
    DC
    CGG
    2060.0
    [m]
    DC
    CGG
    2090.0
    [m]
    DC
    CGG
    2120.0
    [m]
    DC
    CGG
    2150.0
    [m]
    DC
    CGG
    2180.0
    [m]
    DC
    CGG
    2187.0
    [m]
    DC
    CGG
    2190.0
    [m]
    DC
    CGG
    2193.0
    [m]
    DC
    CGG
    2202.0
    [m]
    DC
    CGG
    2208.0
    [m]
    DC
    CGG
    2235.9
    [m]
    C
    CGG
    2237.8
    [m]
    C
    CGG
    2246.0
    [m]
    C
    CGG
    2252.6
    [m]
    C
    CGG
    2259.6
    [m]
    C
    CGG
    2261.4
    [m]
    C
    CGG
    2266.8
    [m]
    C
    CGG
    2268.8
    [m]
    C
    CGG
    2280.0
    [m]
    DC
    CGG
    2283.0
    [m]
    DC
    CGG
    2289.0
    [m]
    DC
    CGG
    2292.0
    [m]
    DC
    CGG
    2298.0
    [m]
    DC
    CGG
    2307.0
    [m]
    DC
    CGG
    2310.0
    [m]
    DC
    CGG
    2322.0
    [m]
    DC
    CGG
    2328.0
    [m]
    DC
    CGG
    2334.0
    [m]
    DC
    CGG