Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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26.11.2024 - 01:27
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7122/2-1

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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.
    7122/2-1
    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.
    BARENTS SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    7122/2-1
    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.
    745-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.
    36
    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,
    07.10.1992
    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.
    11.11.1992
    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.
    11.11.1994
    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.
    18.05.2004
    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.
    DRY
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    363.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2120.0
    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).
    2120.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    5.9
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    72
    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.
    STØ FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    71° 57' 40.28'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    22° 38' 40.1'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7985596.37
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    556833.38
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    34
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    2018

  • Wellbore history
    General
    Well 7122/2-1 is located on the northern periphery of the Hammerfest Basin towards the Loppa High. The primary objective of the well was to test the potential of Valanginian and Hauterivian stratigraphic prospect 7122/2, 3-A. Additional objectives were to undertake a coring and sampling programme necessary for evaluation of the hydrocarbon potential of the 7122/2 3-A prospect and the surrounding area; to obtain an improved understanding of the reservoir potential, source rock development and maturity of the area; and to obtain better stratigraphic and velocity control. Planned TD was at least 50 m into the Middle Jurassic Stø Formation, and if hydrocarbons were encountered, to drill on until shows ceased.
    Operations and results
    Wildcat well 7122/2-1 was spudded with the semi-submersible rig Polar Pioneer on 7 October 1992 and drilled to TD at 2120 m in the Middle Jurassic Stø Formation. The drill string stuck at 669 m in the 24" section and a technical sidetrack was performed. Apart from this drilling operations went on without significant problems. The well was drilled with seawater and hi-vis pills down to 734 m and with KCl/PHPA/polymer mud from 734 m to TD.
    The primary target, The Knurr Formation, was encountered from 1831.5m to 1954.5m and was water bearing. It consisted of massive sandstone sequence. Average horizontal permeability from cores was 636.3 mD. The secondary target, the Stø Formation, was also water bearing. Top Stø Formation was penetrated at 2067.5 m.
    Organic geochemical analyses showed that the maturity of the penetrated sections in well 7122/2-1 range from immature/early mature in the Lower Cretaceous (800 m / %Ro ca 0.47) to peak mature in the Lower Jurassic (2120 m / %Ro ca 0.75). Both source rock sections, the Middle Barremian to Early Aptian Kolje Formation and the Late Jurassic Hekkingen Formation are mature with respect to oil generation. The remaining hydrocarbon generation potential of the Kolje and the Hekkingen Formations is still very good. Both source rock sections contain Type II kerogen and have potential for oil generation. The upper part of the Kolje Formation, from 1765 m to 1781 m, have the highest hydrogen indexes in the well (typically 300 - 500 mg HC/g TOC and TOC in the range 3 - 12 %) and appear more marine than the Hekkingen Formation (typically 200 - 300 mg HC/g TOC and TOC in the range 2 - 13 %). No significant amount of migrated hydrocarbons was detected by the analyses.
    A total of 8 cores were cut in the well covering the intervals 1771 m to 1783 m and 1812 m to 1825m in the Kolje Formation, and the interval 1833-1931.8 m in the Knurr Formation. A total of 21 RFT pressure measurements, including one segregated sample at 1874 m were taken in one run. The sample contained water.
    The well was permanently abandoned on 11 November 1992 as a dry hole.
    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]
    780.00
    2120.00

  • 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
    1771.0
    1776.2
    [m ]
    2
    1776.2
    1778.1
    [m ]
    3
    1779.0
    1784.1
    [m ]
    4
    1812.0
    1824.6
    [m ]
    5
    1833.0
    1860.6
    [m ]
    6
    1860.6
    1888.3
    [m ]
    7
    1888.3
    1915.7
    [m ]
    8
    1915.7
    1931.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    123.6
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1771-1775m
    Core photo at depth: 1775-1776m
    Core photo at depth: 1776-1778m
    Core photo at depth: 1779-1783m
    Core photo at depth: 1783-1784m
    1771-1775m
    1775-1776m
    1776-1778m
    1779-1783m
    1783-1784m
    Core photo at depth: 1812-1816m
    Core photo at depth: 1816-1820m
    Core photo at depth: 1820-1824m
    Core photo at depth: 1824-1825m
    Core photo at depth: 1833-1837m
    1812-1816m
    1816-1820m
    1820-1824m
    1824-1825m
    1833-1837m
    Core photo at depth: 1837-1841m
    Core photo at depth: 1841-1845m
    Core photo at depth: 1845-1849m
    Core photo at depth: 1849-1853m
    Core photo at depth: 1853-1857m
    1837-1841m
    1841-1845m
    1845-1849m
    1849-1853m
    1853-1857m
    Core photo at depth: 1857-1860m
    Core photo at depth: 1857-1861m
    Core photo at depth: 1860-1864m
    Core photo at depth: 1861-1864m
    Core photo at depth: 1864-1868m
    1857-1860m
    1857-1861m
    1860-1864m
    1861-1864m
    1864-1868m
    Core photo at depth: 1868-1872m
    Core photo at depth: 1868-1972m
    Core photo at depth: 1872-1876m
    Core photo at depth: 1876-1880m
    Core photo at depth: 1880-1884m
    1868-1872m
    1868-1972m
    1872-1876m
    1876-1880m
    1880-1884m
    Core photo at depth: 1884-1888m
    Core photo at depth: 1888-1888m
    Core photo at depth: 1888-1889m
    Core photo at depth: 1888-1892m
    Core photo at depth: 1889-1892m
    1884-1888m
    1888-1888m
    1888-1889m
    1888-1892m
    1889-1892m
    Core photo at depth: 1892-1896m
    Core photo at depth: 1896-1900m
    Core photo at depth: 1900-1904m
    Core photo at depth: 1904-1908m
    Core photo at depth: 1908-1912m
    1892-1896m
    1896-1900m
    1900-1904m
    1904-1908m
    1908-1912m
    Core photo at depth: 1912-1915m
    Core photo at depth: 1912-1916m
    Core photo at depth: 1915-1919m
    Core photo at depth: 1916-1919m
    Core photo at depth: 1919-1923m
    1912-1915m
    1912-1916m
    1915-1919m
    1916-1919m
    1919-1923m
    Core photo at depth: 1923-1927m
    Core photo at depth: 1927-1931m
    Core photo at depth: 1931-1932m
    Core photo at depth:  
    Core photo at depth:  
    1923-1927m
    1927-1931m
    1931-1932m

  • 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
    448.0
    36
    450.0
    0.00
    LOT
    INTERM.
    18 5/8
    716.0
    26
    718.0
    1.81
    LOT
    INTERM.
    13 3/8
    1750.0
    17 1/2
    1755.0
    1.53
    LOT
    OPEN HOLE
    2120.0
    12 1/4
    2120.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST GR
    762
    1753
    CST GR
    1767
    2118
    CST GR
    1941
    2100
    DIL LSS GR SP AMS
    714
    1753
    DLL MSFL SDL GR SP
    1746
    2120
    FMS4 GR
    1746
    2120
    FMS-4 GR
    714
    1754
    LDL CNL GR CAL
    714
    1735
    LDL CNL GR CAL AMS
    1746
    2099
    MWD - GR RES DIR
    386
    2120
    NGL
    714
    1726
    NGL
    1746
    2090
    RFT HP GR AMS
    1768
    2106
    VDL GR
    1349
    1746
    VSP
    1360
    2110

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.36

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    5.39
    pdf
    5.71
    pdf
    6.46
    pdf
    8.63
    pdf
    4.38

  • 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
    14.57

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    418
    1.07
    WATER BASED
    444
    1.20
    17.0
    WATER BASED
    448
    1.20
    17.0
    WATER BASED
    449
    1.08
    40.0
    WATER BASED
    542
    1.07
    47.0
    WATER BASED
    642
    1.07
    47.0
    WATER BASED
    734
    1.20
    28.0
    WATER BASED
    858
    1.07
    39.0
    WATER BASED
    915
    1.07
    39.0
    WATER BASED
    945
    1.10
    24.0
    WATER BASED
    1092
    1.12
    22.0
    WATER BASED
    1254
    1.13
    40.0
    WATER BASED
    1433
    1.20
    21.0
    WATER BASED
    1568
    1.20
    19.0
    WATER BASED
    1620
    1.20
    20.0
    WATER BASED
    1681
    1.20
    21.0
    WATER BASED
    1765
    1.20
    21.0
    WATER BASED
    1782
    1.20
    21.0
    WATER BASED
    1812
    1.20
    20.0
    WATER BASED
    1873
    1.20
    22.0
    WATER BASED
    1932
    1.20
    21.0
    WATER BASED
    2051
    1.20
    20.0
    WATER BASED
    2120
    1.20
    20.0
    WATER BASED

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1771.0
    [m]
    C
    FUGRO
    1775.0
    [m]
    C
    FUGRO
    1776.2
    [m]
    C
    FUGRO
    1778.0
    [m]
    C
    FUGRO
    1781.0
    [m]
    C
    FUGRO
    1784.1
    [m]
    C
    FUGRO
    1812.0
    [m]
    C
    FUGRO
    1812.3
    [m]
    C
    ICHRON
    1813.4
    [m]
    C
    ICHRON
    1814.4
    [m]
    C
    ICHRON
    1815.6
    [m]
    C
    ICHRON
    1816.5
    [m]
    C
    ICHRON
    1817.8
    [m]
    C
    FUGRO
    1818.0
    [m]
    C
    ICHRON
    1818.2
    [m]
    C
    ICHRON
    1819.2
    [m]
    C
    ICHRON
    1819.8
    [m]
    C
    FUGRO
    1820.7
    [m]
    C
    ICHRON
    1821.9
    [m]
    C
    ICHRON
    1822.5
    [m]
    C
    FUGRO
    1822.5
    [m]
    C
    ICHRON
    1823.1
    [m]
    C
    ICHRON
    1824.0
    [m]
    C
    FUGRO
    1824.6
    [m]
    C
    ICHRON
    1834.0
    [m]
    C
    FUGRO
    1857.7
    [m]
    C
    ICHRON
    1863.9
    [m]
    C
    ICHRON
    1872.7
    [m]
    C
    ICHRON
    1872.8
    [m]
    C
    FUGRO
    1873.1
    [m]
    C
    FUGRO
    1876.5
    [m]
    C
    FUGRO
    1882.0
    [m]
    C
    ICHRON
    1885.4
    [m]
    C
    FUGRO
    1894.5
    [m]
    C
    ICHRON
    1894.5
    [m]
    C
    FUGRO
    1913.8
    [m]
    C
    FUGRO
    1913.8
    [m]
    C
    ICHRON
    1922.6
    [m]
    C
    FUGRO
    1922.7
    [m]
    C
    ICHRON
    1923.1
    [m]
    C
    FUGRO

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    1816.25
    [m ]
    1835.50
    [m ]
    1838.75
    [m ]
    1845.50
    [m ]
    1851.50
    [m ]
    1869.25
    [m ]
    1875.50
    [m ]
    1883.75
    [m ]
    1889.75
    [m ]
    1909.50
    [m ]
    1919.50
    [m ]
    1923.75
    [m ]
    1928.25
    [m ]