Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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25.11.2024 - 01:30
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7325/4-1

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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.
    7325/4-1
    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
    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.
    BARENTS 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.
    7325/4-1
    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.
    Statoil 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.
    1661-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.
    16
    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,
    19.07.2017
    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.
    03.08.2017
    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.
    03.08.2019
    Plugged and abondon date
    Date when the P&A-operations of the wellbore was finished, as reported by the operator to the Norwegian Offshore Directorate throught DDRS (Daily Drilling Reporting System). Only applied once pr. wellhead/surface location.
    03.08.2017
    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.
    03.08.2019
    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.
    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.
    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.
    STØ FM
    2nd level with HC, age
    Age of lithostratigraphic unit, 2nd level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE.
    LATE TRIASSIC
    2nd level with HC, formation
    Name of lithostartigraphic unit, 2nd 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.
    SNADD FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    32.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    447.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1210.0
    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).
    1210.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    34
    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 TRIASSIC
    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.
    SNADD FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    73° 38' 57.55'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    25° 10' 41.74'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    8174015.52
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    442761.29
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    35
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    8211

  • Wellbore history
    General
    Well 7325/4-1 was drilled to test the Gemini prospect in the Hoop Fault Complex in the Barents Sea. The primary objective was to prove oil in the Realgrunnen Subgroup. Secondary objective was to test the Late Triassic Snadd Formation.
    Operations and results
    A 9 7/8" pilot well (7325/4-U-1) was spudded on 18 July 2017. It was drilled approximately 40 m south-east of the main well location. TD was set at 725 m in Hekkingen Formation, equivalent to the planned setting depth of the 13 3/8" surface casing shoe in the main well. No shallow reservoir was detected.
    Wildcat well 7325/4-1 was spudded with the semi-submersible installation Songa Enabler on 19 July 2017 and drilled to TD at 1210 m in the Late Triassic Snadd Formation. Operations proceeded without significant problems, but the sidewall cores from the well were contaminated by a leak of hydraulic oil from the XL-Rock tool. The well was drilled with Seawater and hi-vis sweeps down to 731 m and with KCl/Pol/GEM water-based mud from 731 m to TD.
    The top of the reservoir in the Stø Formation, Realgrunnen Subgroup, was encountered at 772 m. The reservoir was seen to be hydrocarbon-bearing, with an approximately 18.5 m gas column. Drop in resistivity and increase in oil shows indicate a gas-water contact at 790.5 m, but this is not conclusive. In the Snadd Formation, a thin oil zone was encountered in the top of a 33 m thick channel sandstone with top at 1120 m. The sandstone is tight, but oil was sampled at 1122.5 m. In addition to shows in the hydrocarbon-bearing reservoirs, oil shows in the form of direct and cut fluorescence, were recorded at 804 m and 843 m.
    One core was cut from 773 to 818.4 m with 100% recovery. MDT fluid samples were taken at 790.2 m (gas), 803.5 m (water), 1122.5 m (oil), 1129.5 m (gas), and 859.7 m (water).
    The well was permanently abandoned on 3 August 2017 as an oil and gas 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]
    735.00
    1210.00

  • 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
    773.0
    818.4
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    45.4
    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
    27
    486.0
    30
    486.0
    0.00
    INTERM.
    13 3/8
    724.0
    17 1/2
    730.0
    0.00
    735.0
    0.0
    2.54
    FIT
    OPEN HOLE
    1210.0
    12 1/4
    1210.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CMR GR
    767
    1206
    GPIT FMI
    729
    1206
    MSIP HRLA PEX ECS
    724
    1199
    MWD - ARC TELE
    485
    730
    MWD - GVR ARC TELE
    730
    1210
    PQ HY PO IFA SC MS GR
    790
    1168
    PS HY PO PA IFA SC MS GR
    797
    1145
    XL ROCK
    738
    1188

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    579
    1.17
    14.0
    KCl/Polymer/GEM
    731
    1.14
    19.0
    KCl/Polymer/GEM
    731
    1.03
    1.0
    Seawater
    773
    1.14
    20.0
    KCl/Polymer/GEM
    818
    1.14
    18.0
    KCl/Polymer/GEM
    912
    1.15
    16.0
    KCl/Polymer/GEM
    1035
    1.14
    16.0
    KCl/Polymer/GEM
    1165
    1.14
    17.0
    KCl/Polymer/GEM
    1210
    1.17
    17.0
    KCl/Polymer/GEM

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    735.0
    [m]
    DC
    CGG
    738.0
    [m]
    SWC
    CGG
    741.5
    [m]
    SWC
    CGG
    750.0
    [m]
    DC
    CGG
    756.0
    [m]
    DC
    CGG
    762.0
    [m]
    DC
    CGG
    768.3
    [m]
    SWC
    CGG
    771.0
    [m]
    SWC
    CGG
    773.3
    [m]
    C
    CGG
    777.5
    [m]
    C
    CGG
    781.0
    [m]
    C
    CGG
    783.3
    [m]
    C
    CGG
    790.4
    [m]
    C
    CGG
    791.5
    [m]
    C
    CGG
    793.3
    [m]
    C
    CGG
    796.3
    [m]
    C
    CGG
    801.6
    [m]
    C
    CGG
    806.2
    [m]
    C
    CGG
    807.9
    [m]
    C
    CGG
    809.6
    [m]
    C
    CGG
    812.5
    [m]
    C
    CGG
    816.0
    [m]
    C
    CGG
    818.3
    [m]
    C
    CGG
    825.0
    [m]
    DC
    CGG
    831.5
    [m]
    SWC
    CGG
    838.0
    [m]
    SWC
    CGG
    846.0
    [m]
    DC
    CGG
    853.3
    [m]
    SWC
    CGG
    861.0
    [m]
    DC
    CGG
    867.0
    [m]
    DC
    CGG
    873.0
    [m]
    DC
    CGG
    882.0
    [m]
    DC
    CGG
    888.0
    [m]
    DC
    CGG
    897.0
    [m]
    DC
    CGG
    903.0
    [m]
    DC
    CGG
    909.0
    [m]
    DC
    CGG
    918.0
    [m]
    DC
    CGG
    924.0
    [m]
    DC
    CGG
    930.0
    [m]
    DC
    CGG
    939.0
    [m]
    DC
    CGG
    945.0
    [m]
    DC
    CGG
    954.0
    [m]
    DC
    CGG
    960.0
    [m]
    DC
    CGG
    966.0
    [m]
    DC
    CGG
    975.0
    [m]
    DC
    CGG
    981.0
    [m]
    DC
    CGG
    998.8
    [m]
    SWC
    CGG
    1011.0
    [m]
    DC
    CGG
    1017.0
    [m]
    DC
    CGG
    1023.0
    [m]
    DC
    CGG
    1030.7
    [m]
    SWC
    CGG
    1038.0
    [m]
    DC
    CGG
    1044.0
    [m]
    DC
    CGG
    1050.6
    [m]
    SWC
    CGG
    1059.0
    [m]
    DC
    CGG
    1065.4
    [m]
    SWC
    CGG
    1074.0
    [m]
    DC
    CGG
    1092.0
    [m]
    DC
    CGG
    1098.0
    [m]
    DC
    CGG
    1110.0
    [m]
    DC
    CGG
    1116.7
    [m]
    SWC
    CGG
    1118.3
    [m]
    SWC
    CGG
    1134.0
    [m]
    DC
    CGG
    1140.0
    [m]
    DC
    CGG
    1146.0
    [m]
    DC
    CGG
    1155.0
    [m]
    DC
    CGG
    1164.6
    [m]
    SWC
    CGG
    1166.9
    [m]
    SWC
    CGG
    1182.0
    [m]
    DC
    CGG
    1188.5
    [m]
    SWC
    CGG
    1197.0
    [m]
    DC
    CGG
    1203.0
    [m]
    DC
    CGG
    1210.0
    [m]
    DC
    CGG