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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15/5-3

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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.
    15/5-3
    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
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    15/5-3
    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.
    Norsk Hydro Produksjon 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.
    260-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.
    108
    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,
    21.08.1980
    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.
    07.12.1980
    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.
    07.12.1982
    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.
    24.09.2015
    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.
    SHOWS
    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
    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.
    110.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5042.0
    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).
    5031.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    142
    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 PERMIAN
    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.
    NO GROUP DEFINED
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    58° 43' 47.93'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 38' 12.05'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6510938.12
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    421061.30
    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.
    207

  • Wellbore history
    General
    Well 15/5-3 was drilled in the Vilje Sub-basin between the Enoch and the Gudrun fields in the North Sea. The primary objective was to test possible sandstone reservoirs of Triassic age. A secondary objective was to test the Middle Jurassic Sleipner Formation. The well was planned to penetrate approximately 400 m into the Triassic and had a projected total depth of 4200 m.
    Operations and results
    After two unsuccessful spuds, wildcat well 15/5-3 was spudded with the semi-submersible installation Nortrym on 21 August 1980 and drilled to TD at 5042 m in shale and sandstones of Late Permian age. Hole reaming was necessary in intervals below 2250 m, otherwise the well was drilled without significant problems or incidents. The hole was good and vertical down to ca 3000 m. Below 3200 m the hole deviation increased to between 3° and 8°. The well was drilled with seawater and hi-vis sweeps down to 615 m, with a seawater/Dextrid mud from 615 m to 2029 m, with seawater/polymer/Q.Broxin mud from 2029 m to 3834 m, and with a salt-saturated Dextrid mud from 3834 to TD.
    None of the objective sandstone reservoirs were found in the well. The Draupne Formation was encountered at 3665 m. After penetrating 135 m of Draupne shales, the well encountered 1050 m of Zechstein evaporites. At this point, it was decided to deepen the well further in order to explore the pre-salt rocks. Below these, undefined shales and thin sandstones of Late Permian age were found.
    Traces of oil in the mud was observed during P&A - see below. Poor oil shows were recorded in thin limestone stringers at 2850 m, 2920, and in the interval 3355 to 3365 m. No shows were recorded in the pre-Zechstein shales and sand sequence.
    Two cores were cut. Core 1 was cut from 3815 to 3834.4 m with 59.9% recovery. Core 2 was cut from 5038 to 5042 at TD with 94% recovery. No fluid samples were taken on wire line. However, while cutting the 9 5/8" casing during P&A, small amounts of oil were found floating on the drilling mud. The oil is assumed to originate from two 2-meter thick sandstone stringers at 1474 m and 1479 m in the top of the Grid Formation. From wire line log interpretation, these show high porosities and high hydrocarbon saturations.
    The well was permanently abandoned on 7 December 2015 as a well with shows.
    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]
    200.00
    5038.00

  • 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
    3815.0
    3826.2
    [m ]
    2
    5038.0
    5041.7
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    14.9
    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
    198.0
    36
    198.0
    0.00
    SURF.COND.
    20
    605.0
    26
    605.0
    1.44
    LOT
    SURF.COND.
    13 3/8
    2002.0
    17 1/2
    2002.0
    1.74
    LOT
    INTERM.
    9 5/8
    3525.0
    12 1/4
    3525.0
    2.01
    LOT
    LINER
    7
    4863.0
    8 1/2
    4863.0
    2.22
    LOT
    OPEN HOLE
    5042.0
    5 7/8
    5042.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CDM
    2002
    5046
    FDC CNL GR
    606
    5045
    ISF SON GR
    135
    5044
    TEMP
    145
    3488
    VELOCITY
    198
    5044

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.07
    pdf
    1.35

  • Documents – reported by the production licence (period for duty of secrecy expired)
    Documents – reported by the production licence (period for duty of secrecy expired)
    Document name
    Document format
    Document size [MB]
    pdf
    196.79
    pdf
    9.26

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    270
    1.06
    waterbased
    820
    1.13
    46.0
    waterbased
    1710
    1.13
    47.0
    waterbased
    2004
    1.26
    50.0
    waterbased
    2696
    1.26
    51.0
    waterbased
    2997
    1.27
    45.0
    waterbased
    3690
    1.80
    55.0
    waterbased
    4627
    1.86
    61.0
    waterbased

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1120.0
    [m]
    DC
    UOS
    1140.0
    [m]
    DC
    UOS
    1150.0
    [m]
    DC
    UOS
    1170.0
    [m]
    DC
    UOS
    1180.0
    [m]
    DC
    UOS
    1200.0
    [m]
    DC
    UOS
    1210.0
    [m]
    DC
    UOS
    1230.0
    [m]
    DC
    UOS
    1260.0
    [m]
    DC
    UOS
    1270.0
    [m]
    DC
    UOS
    1290.0
    [m]
    DC
    UOS
    1300.0
    [m]
    DC
    UOS
    1320.0
    [m]
    DC
    UOS
    1330.0
    [m]
    DC
    UOS
    1350.0
    [m]
    DC
    UOS
    1360.0
    [m]
    DC
    UOS
    1380.0
    [m]
    DC
    UOS
    1390.0
    [m]
    DC
    UOS
    1410.0
    [m]
    DC
    UOS
    1420.0
    [m]
    DC
    UOS
    1440.0
    [m]
    DC
    UOS
    1450.0
    [m]
    DC
    UOS
    1470.0
    [m]
    DC
    UOS
    1480.0
    [m]
    DC
    UOS
    1500.0
    [m]
    DC
    UOS
    1510.0
    [m]
    DC
    UOS
    1530.0
    [m]
    DC
    UOS
    1540.0
    [m]
    DC
    UOS
    1560.0
    [m]
    DC
    UOS
    1570.0
    [m]
    DC
    UOS
    1590.0
    [m]
    DC
    UOS
    1600.0
    [m]
    DC
    UOS
    1620.0
    [m]
    DC
    UOS
    1630.0
    [m]
    DC
    UOS
    1650.0
    [m]
    DC
    UOS
    1660.0
    [m]
    DC
    UOS
    1680.0
    [m]
    DC
    UOS
    1690.0
    [m]
    DC
    UOS
    1710.0
    [m]
    DC
    UOS
    1720.0
    [m]
    DC
    UOS
    1740.0
    [m]
    DC
    UOS
    1760.0
    [m]
    DC
    UOS
    1770.0
    [m]
    DC
    UOS
    1790.0
    [m]
    DC
    UOS
    1800.0
    [m]
    DC
    UOS
    1810.0
    [m]
    DC
    UOS
    1820.0
    [m]
    DC
    UOS
    1830.0
    [m]
    DC
    UOS
    1840.0
    [m]
    DC
    UOS
    1850.0
    [m]
    DC
    UOS
    1860.0
    [m]
    DC
    UOS
    1870.0
    [m]
    DC
    UOS
    1880.0
    [m]
    DC
    UOS
    1890.0
    [m]
    DC
    UOS
    1900.0
    [m]
    DC
    UOS
    1910.0
    [m]
    DC
    UOS
    1920.0
    [m]
    DC
    UOS
    1930.0
    [m]
    DC
    UOS
    1940.0
    [m]
    DC
    UOS
    1950.0
    [m]
    DC
    UOS
    1960.0
    [m]
    DC
    UOS
    1970.0
    [m]
    DC
    UOS
    1980.0
    [m]
    DC
    UOS
    1990.0
    [m]
    DC
    UOS
    2000.0
    [m]
    DC
    UOS
    2010.0
    [m]
    DC
    UOS
    2020.0
    [m]
    DC
    UOS
    2040.0
    [m]
    DC
    UOS
    2045.0
    [m]
    DC
    UOS
    2050.0
    [m]
    DC
    UOS
    2060.0
    [m]
    DC
    UOS
    2070.0
    [m]
    DC
    UOS
    2080.0
    [m]
    DC
    UOS
    2090.0
    [m]
    DC
    UOS
    2105.0
    [m]
    DC
    UOS
    2115.0
    [m]
    DC
    UOS
    2125.0
    [m]
    DC
    UOS
    2135.0
    [m]
    DC
    UOS
    2145.0
    [m]
    DC
    UOS
    2155.0
    [m]
    DC
    UOS
    2165.0
    [m]
    DC
    UOS
    2175.0
    [m]
    DC
    UOS
    2185.0
    [m]
    DC
    UOS
    2190.0
    [m]
    DC
    UOS
    2200.0
    [m]
    DC
    UOS
    2210.0
    [m]
    DC
    UOS
    2220.0
    [m]
    DC
    UOS
    2230.0
    [m]
    DC
    UOS
    2240.0
    [m]
    DC
    UOS
    2250.0
    [m]
    DC
    UOS
    2260.0
    [m]
    DC
    UOS
    2270.0
    [m]
    DC
    UOS
    2280.0
    [m]
    DC
    UOS
    2290.0
    [m]
    DC
    UOS
    2300.0
    [m]
    DC
    UOS
    2310.0
    [m]
    DC
    UOS
    2320.0
    [m]
    DC
    UOS
    2330.0
    [m]
    DC
    UOS
    2340.0
    [m]
    DC
    UOS
    2350.0
    [m]
    DC
    UOS
    2360.0
    [m]
    DC
    UOS
    2370.0
    [m]
    DC
    UOS
    2380.0
    [m]
    DC
    UOS
    2390.0
    [m]
    DC
    UOS
    2400.0
    [m]
    DC
    UOS
    2410.0
    [m]
    DC
    UOS
    2420.0
    [m]
    DC
    UOS
    2430.0
    [m]
    DC
    UOS
    2440.0
    [m]
    DC
    UOS
    2450.0
    [m]
    DC
    UOS
    2460.0
    [m]
    DC
    UOS
    2470.0
    [m]
    DC
    UOS
    2480.0
    [m]
    DC
    UOS
    2490.0
    [m]
    DC
    UOS
    2500.0
    [m]
    DC
    UOS
    2510.0
    [m]
    DC
    UOS
    2520.0
    [m]
    DC
    UOS
    2530.0
    [m]
    DC
    UOS
    2540.0
    [m]
    DC
    UOS
    2550.0
    [m]
    DC
    UOS
    2560.0
    [m]
    DC
    UOS
    2570.0
    [m]
    DC
    UOS
    2580.0
    [m]
    DC
    UOS
    2590.0
    [m]
    DC
    UOS
    2600.0
    [m]
    DC
    UOS