Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.11.2024 - 09:09
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7324/7-3 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.
    7324/7-3 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).
    APPRAISAL
    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.
    7324/7-3
    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.
    OMV (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.
    1609-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.
    91
    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,
    15.01.2016
    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.
    14.04.2016
    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.
    14.04.2018
    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.
    14.04.2018
    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.
    APPRAISAL
    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.
    NO
    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.
    MIDDLE JURASSIC
    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.
    FRUHOLMEN FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    40.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    402.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2354.0
    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).
    713.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    93
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    19
    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.
    73° 26' 30.83'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    24° 15' 40.08'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    8151997.24
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    412900.00
    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.
    7875

  • Wellbore history
    Wellbore history
    General
    Well 7324/7-3 S was drilled to appraise the 7324/8-1 Wisting discovery. The objective was to drill horizontally through the Central South and Central West segments in order test the Stø and Fruholmen reservoirs by performing a DST. The well is the first horizontal well of this shallow depth drilled in the Barents Sea and has a well path from vertical to horizontal during 270m of argillaceous overburden.
    Operations and results
    Appraisal well 7324/7-3 S was spudded with the semi-submersible installation Transocean Spitsbergen on 15 January 2016 and drilled to TD at 2354 m (713 m TVD) in the Middle Jurassic Stø Formation. The well was drilled vertical down to ca 490 m and horizontal (90° deviated towards northeast) from ca 932 m (716 m TVD). Severe mud losses were experienced during drilling of the horizontal section, mainly related to faults and fracture zones, all cured with LCM material. Otherwise, no significant problem was encountered in the operations. The well was drilled with Bentonite sweeps/KCl mud down to 509 m, with EMS 4600 oil based mud from 509 m to 1238 m, and with seawater/Duotec NS mud from 1238 m to TD.
    The reservoirs of Mid-Jurassic to Late Triassic Stø/Nordmela/Fruholmen formations were oil filled, both in the Central South and Central West segment. The well penetrated the sandy Stø/Nordmela Formation in the Central South segment, before entering the Fruholmen Formation in an uplifted horst block, and finally re-entering the Stø Fomation in the Central West segment. All formations penetrated in the horizontal section were oil filled, including the Fruholmen Formation in the horst block. No oil-water contact or free water level was penetrated as the well was planned to stay in the oil-bearing parts of the Realgrunnen Formation. From the Geosphere tool that was used for geosteering in the 8 1/2" section a Free Water Level between 697 and 700 m TVD MSL.
    No cores were cut. An MDT oil samples was taken at 803 m.
    The well was permanently abandoned on 14 April 2016 as an oil appraisal well.
    Testing
    A drill stem test from the horizontally drilled Stø Formation was performed. The main flow produced 487 Sm3 oil and 35055 Sm3 of associated gas /day through a 64/64" choke. The corresponding gas/oil ratio is 72 Sm3/Sm3. The oil density was 0.839 g/cm3 and the gas gravity was 0.72 (air = 1). Maximum production rates were 762 Sm3 of oil and 48310 Sm3 of associated gas /day through a 104/64-inch nozzle opening. The formation temperature measured at 1736.85 m (718.21m TVD) was 17.8 °C.

  • 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]
    516.00
    2352.00

  • Oil samples at the Norwegian Offshore Directorate
    Oil samples at the Norwegian Offshore Directorate
    Test type
    Bottle number
    Top depth
    MD [m]
    Bottom depth
    MD [m]
    Fluid type
    Test time
    Samples available
    DST
    803.00
    0.00
    OIL
    YES
    DST
    2232.49
    1771.03
    OIL
    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
    452.0
    36
    452.0
    0.00
    SURF.COND.
    20
    506.8
    26
    509.5
    0.00
    514.5
    0.0
    1.15
    FIT
    INTERM.
    13 3/8
    659.5
    17 1/2
    665.0
    1.70
    FIT
    PILOT HOLE
    672.0
    12 1/4
    672.0
    0.00
    803.0
    0.0
    1.76
    LOT
    INTERM.
    9 5/8
    947.5
    12 1/4
    952.0
    1.35
    FIT
    PROD.
    7
    1746.0
    8 1/2
    1750.0
    0.00
    1753.0
    0.0
    1.35
    FIT
    LINER
    5
    2351.0
    6
    2354.0
    0.00

  • Drill stem tests (DST)
    Drill stem tests (DST)
    Test number
    From depth MD
    [m]
    To depth MD
    [m]
    Choke size
    [mm]
    1.0
    0
    0
    25.4
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    Drill stem tests (DST)
    Test number
    Oil
    [Sm3/day]
    Gas
    [Sm3/day]
    Oil density
    [g/cm3]
    Gas grav. rel.air
    GOR
    [m3/m3]
    1.0
    487
    35055
    0.839
    0.720
    72

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    GPIT PPC APS MDT DWCH
    659
    920
    GPIT PPC MSIP GR
    442
    620
    HDVS VSP
    442
    595
    LWD - GEO ECO SON STETH
    948
    1220
    LWD - GEOS ECOS SONS
    1216
    1750
    LWD - PERS MICS GEOVIS SONS
    1746
    2346
    LWD - SON SC VIS ARC8 ADN8
    660
    942
    LWD - VIS ARC8 ADN8
    507
    644
    LWD MWD - TELE GR
    440
    488

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    458
    1.09
    25.0
    EMS 4600 @ 5°C
    458
    1.09
    14.0
    EMS 4600 @ 50°C
    939
    1.14
    15.0
    EMS 4600 @ 50°C
    1110
    1.09
    15.0
    EMS 4600 @ 50°C
    1364
    1.09
    9.0
    Sea water polymer WBM
    2184
    1.09
    8.0
    WBM Polymer New
    2184
    1.09
    8.0
    Sea water polymer WBM
    2300
    1.10
    9.0
    WBM Polymer New
    2354
    1.16
    25.0
    Versapro LSOBM
    2354
    1.10
    11.0
    EMS-4600
    2354
    1.18
    17.0
    EMS-4600
    2354
    1.19
    23.0
    Versapro LSOBM
    2354
    1.10
    7.0
    WBM Polymer New
    2354
    1.09
    8.0
    Sea water polymer WBM