Factpages Norwegian petroleum directorate
Factpages Norwegian petroleum directorate
NPD          Norsk
06.06.2023 - 01:36
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25/2-17

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  • General information

    General information
    Attribute Value
    Wellbore name
    Official name of wellbore based on NPD guidelines for designation of wells and wellbores.
    25/2-17
    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 NPD.
    INJECTING: It was injected to the wellbore at the time of the operators last monthly report to the NPD.
    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
    Discovery
    Name of the discovery the wellbore is related to.
    Well name
    Official name of the parent well for the wellbore based on NPD guidelines for designation of wells and wellbores.
    25/2-17
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    UHN98R00-inline 3338 & crossline 4645
    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 NPD.
    1276-L
    Drilling facility
    NPD's name of the facility which the wellbore was drilled from.
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    35
    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,
    07.09.2009
    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.
    11.10.2009
    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.
    11.10.2011
    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.
    11.10.2011
    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
    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 NPD bulletins.
    EOCENE
    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 NPD bulletins.
    FRIGG FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    22.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    120.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2193.0
    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).
    2192.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    67
    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.
    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.
    SELE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    59° 51' 57.13'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 37' 50.39'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6636686.06
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    479314.99
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    31
    NPDID wellbore
    NPD's unique id for the wellbore.
    6215
  • Wellbore history

    General
    Well 25/2-17, Frigg Delta, was drilled east of the Frigg Field and north of the Frøy discovery in the south-west end of the Bjørgvin Arch in the North Sea. The main objective of the well was to prove commercial hydrocarbon accumulation in the Frigg Formation found in the lower part of the Hordaland Group. The License obligation was to drill 50 m into the Rogaland Group, before setting the TD of the well.
    Operations and results
    Appraisal well 25/2-17 was spudded with the semi-submersible installation Ocean Vanguard on 7 September 2009 and drilled to TD at 2193 m in the Early Eocene sediments of the Sele Formation. No major problems were encountered in the operations. The well was drilled with sea water and hi-vis PAC/RE sweeps down to 1000 m and with Performadril water-based mud from 1000 m to TD.
    Well 25/2-17 encountered oil in unconsolidated sand of the Frigg Formation. Top Frigg came in at 1949 m, 10 m deeper than prognosed, and the oil water contact 2 m shallower than prognosed giving an oil column of 20 m. Good shows were recorded in the oil-bearing zone on core #1 from its top at 1955 m to 1970 m where a clear OWC was seen. Otherwise no oil shows were recorded in the well.
    Three cores were cut from 1955 m to 2014 m in the Frigg Formation. MDT oil samples with up to 50% water cut were taken at 1951.2 m, while clean water samples were taken at 1987.6 m. Single stage separation of the oil gave an oil density of 0.919 g/cm3 and a GOR of 16 Sm3/Sm3.
    The well was permanently abandoned on 11 October 2009. The well was drilled as wildcat but has later been reclassified as an appraisal of the 25/2-10 S GammaDelta discovery
    Testing
    No drill stem test was performed.
  • Cuttings at the NPD

    Cuttings at the NPD
    Cuttings available for sampling?
    YES
    Cuttings at the NPD
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    1010.00
    2193.00
  • Cores at the NPD

    Cores at the NPD
    Core sample number
    Core sample - top depth
    Core sample - bottom depth
    Core sample depth - uom
    1
    1955.0
    1973.9
    [m ]
    2
    1974.0
    1986.2
    [m ]
    3
    1987.0
    2014.0
    [m ]
    Cores at the NPD
    Total core sample length [m]
    58.1
    Cores at the NPD
    Cores available for sampling?
    YES
  • Lithostratigraphy

    Lithostratigraphy
    Top depth [m]
    Lithostrat. unit
    142
    468
    1045
    1949
    2112
    2112
    2160
  • Geochemical information

    Geochemical information
    Document name
    Document format
    Document size [MB]
    txt
    0.00
    txt
    0.02
    txt
    0.00
    txt
    0.01
  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMI MSIP
    1885
    2187
    MDT PRESS
    1950
    2032
    MDT SAMP
    1951
    1951
    MSIP PEX PPC
    1000
    1878
    MWD LWD - PP
    142
    207
    MWD LWD - PP ARCVIS8
    207
    1903
    MWD LWD - TELE ARCVIS6 GEOVIS6
    1903
    2193
    PEX HRLA
    1885
    2187
    VSP NI-4WA
    142
    1850
  • 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
    201.0
    36
    203.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    1000.0
    17 1/2
    1007.0
    1.33
    LOT
    INTERM.
    9 5/8
    1885.0
    12 1/4
    1903.0
    1.77
    LOT
    OPEN HOLE
    2193.0
    8 1/2
    2193.0
    0.00
    LOT
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    247
    1.23
    22.0
    Performadril
    1007
    1.14
    16.0
    Performadril
    1380
    1.17
    25.0
    Performadril
    1710
    1.21
    30.0
    Performadril
    1900
    1.22
    25.0
    Performadril
    1900
    1.20
    27.0
    Performadril
    1904
    1.21
    20.0
    Performadril
    1955
    1.20
    25.0
    Performadril
    2015
    1.21
    23.0
    Performadril
    2193
    1.20
    24.0
    Performadril