Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
sodir.no    Norsk
sodir.no          Norsk
22.11.2024 - 09:09
Time of last synchronization with Norwegian Offshore Directorate's internal systems

15/9-7

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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.
    15/9-7
    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
    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
    Field
    Name of the field the wellbore is related to.
    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.
    15/9-7
    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.
    Den norske stats oljeselskap a.s
    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.
    271-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.
    125
    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,
    26.12.1980
    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.
    29.04.1981
    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.
    29.04.1983
    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.
    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.
    GAS/CONDENSATE
    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.
    HUGIN FM
    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.
    107.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3776.0
    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).
    3776.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1.3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    127
    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.
    SLEIPNER FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    58° 22' 56.07'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    1° 42' 45.99'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6472135.59
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    424724.77
    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.
    218

  • Wellbore history
    General
    Well 15/9-7 was drilled as an appraisal well on the south part of the Sleipner Vest Field in the North Sea. The primary objective was to test for hydrocarbons in Callovian age sandstones in the Epsilon structure.
    Operations and results
    Appraisal well 15/9-7 was spudded with the semi-submersible installation Nordraug on 26 December 1980 and drilled to TD at 3776 m in the Middle Jurassic Sleipner Formation. A total of 20 days was spent on waiting on weather. The phase of running BOP after cemented 20" casing took 15 days due to several broken guide wires combined with bad weather. The well was drilled with spud mud down to 465 m, with gypsum/polymer mud from 465 m to 2823 m, and with gel/lignosulphonate/Drispac mud from 2823 m to TD.
    The primary target Hugin Formation was penetrated at 3519 m and proved to hold gas and condensate down to a true gas/water contact at 3673 m based on RFT gas gradients. The gross reservoir thickness was 185 m (3519 to 3704 m) with a net pay of 83 m with 18% porosity and 12 % water saturation. There were no oil shows above top Hugin reservoir level. Oil shows were described on the cores from the reservoir and on cuttings down to 3677 m.
    A total of 156 m core was recovered in 12 cores from the interval 3516 to 3671 m. The core-log depth shift was significant for all cores: from +6.0 to +9.1 meter, the largest shifts are for the deepest cores. Segregated RFT fluid samples were taken at 3560 m (gas, mud filtrate and condensate), 3603 m (gas, mud filtrate and condensate), 3658.5 m (gas, mud filtrate and condensate +dark oil emulsion), 3687 m (mud filtrate, formation water and minor gas), and 3672.2 m (mud filtrate and water).
    The well was permanently abandoned on 29 April 1981 as a gas/condensate appraisal well.
    Testing
    Three drill stem tests were performed in the Hugin Formation.
    DST1 tested the interval 3671 to 3674.5 m. It produced 194100 Sm3 gas and 38 Sm3 condensate /day through a 24/64" choke. The GOR was 5107 Sm3/Sm3, the condensate density was 0.797 g/cm3 and the gas gravity was 0.78 (air = 1). The gas contained 7-8% CO2. The maximum temperature in the test was 127.8 °C.
    DST2 tested the interval 3637 to 3638.5 m. It produced 322500 Sm3 gas and 93.2 Sm3 condensate /day through a 24/64" choke. The GOR was 3461 Sm3/Sm3, the condensate density was 0.790 g/cm3 and the gas gravity was 0.775 (air = 1). The gas contained 7-8% CO2. The maximum temperature in the test was 121.1 °C.
    DST3 tested the interval 3555 to 3565 m. It produced 912900 Sm3 gas and 242.8 Sm3 condensate /day through a 64/64" choke. The GOR was 3760 Sm3/Sm3, the condensate density was 0.792 g/cm3 and the gas gravity was 0.775 (air = 1). The gas contained 8-9% CO2. The maximum temperature in the test was 118.3 °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]
    180.00
    3770.00

  • 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
    3516.0
    3530.2
    [m ]
    2
    3530.2
    3531.5
    [m ]
    3
    3533.0
    3551.0
    [m ]
    4
    3550.0
    3567.8
    [m ]
    5
    3568.0
    3585.6
    [m ]
    6
    3585.6
    3597.9
    [m ]
    7
    3597.9
    3616.7
    [m ]
    8
    3615.0
    3620.4
    [m ]
    9
    3621.0
    3633.4
    [m ]
    10
    3633.0
    3642.5
    [m ]
    11
    3643.0
    3653.0
    [m ]
    12
    3653.0
    3671.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    156.1
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 3516-3518m
    Core photo at depth: 3518-3521m
    Core photo at depth: 3521-3524m
    Core photo at depth: 3524-3526m
    Core photo at depth: 3526-3529m
    3516-3518m
    3518-3521m
    3521-3524m
    3524-3526m
    3526-3529m
    Core photo at depth: 3529-3530m
    Core photo at depth: 3530-3531m
    Core photo at depth: 3533-3535m
    Core photo at depth: 3535-3538m
    Core photo at depth: 3538-3541m
    3529-3530m
    3530-3531m
    3533-3535m
    3535-3538m
    3538-3541m
    Core photo at depth: 3541-3543m
    Core photo at depth: 3543-3546m
    Core photo at depth: 3546-3549m
    Core photo at depth: 3549-3551m
    Core photo at depth: 3550-3552m
    3541-3543m
    3543-3546m
    3546-3549m
    3549-3551m
    3550-3552m
    Core photo at depth: 3552-3555m
    Core photo at depth: 3555-3558m
    Core photo at depth: 3558-3560m
    Core photo at depth: 3560-3563m
    Core photo at depth: 3563-3566m
    3552-3555m
    3555-3558m
    3558-3560m
    3560-3563m
    3563-3566m
    Core photo at depth: 3566-3567m
    Core photo at depth: 3568-3570m
    Core photo at depth: 3570-3573m
    Core photo at depth: 3573-3576m
    Core photo at depth: 3570-3573m
    3566-3567m
    3568-3570m
    3570-3573m
    3573-3576m
    3570-3573m
    Core photo at depth: 3573-3576m
    Core photo at depth: 3576-3578m
    Core photo at depth: 3578-3581m
    Core photo at depth: 3576-3578m
    Core photo at depth: 3578-3581m
    3573-3576m
    3576-3578m
    3578-3581m
    3576-3578m
    3578-3581m
    Core photo at depth: 3581-3584m
    Core photo at depth: 3584-3585m
    Core photo at depth: 3585-3588m
    Core photo at depth: 3588-3590m
    Core photo at depth: 3590-3593m
    3581-3584m
    3584-3585m
    3585-3588m
    3588-3590m
    3590-3593m
    Core photo at depth: 3593-3596m
    Core photo at depth: 3596-3597m
    Core photo at depth: 3597-3600m
    Core photo at depth: 3600-3603m
    Core photo at depth: 3603-3606m
    3593-3596m
    3596-3597m
    3597-3600m
    3600-3603m
    3603-3606m
    Core photo at depth: 3606-3608m
    Core photo at depth: 3608-3611m
    Core photo at depth: 3611-3614m
    Core photo at depth: 3614-3616m
    Core photo at depth: 3615-3617m
    3606-3608m
    3608-3611m
    3611-3614m
    3614-3616m
    3615-3617m
    Core photo at depth: 3617-3620m
    Core photo at depth: 3621-3623m
    Core photo at depth: 3623-3626m
    Core photo at depth: 3626-3629m
    Core photo at depth: 3629-3631m
    3617-3620m
    3621-3623m
    3623-3626m
    3626-3629m
    3629-3631m
    Core photo at depth: 3631-3633m
    Core photo at depth: 3633-3635m
    Core photo at depth: 3635-3638m
    Core photo at depth: 3638-3641m
    Core photo at depth: 3641-3642m
    3631-3633m
    3633-3635m
    3635-3638m
    3638-3641m
    3641-3642m
    Core photo at depth: 3643-3645m
    Core photo at depth: 3641-3642m
    Core photo at depth: 3643-3645m
    Core photo at depth: 3645-3548m
    Core photo at depth: 3648-3651m
    3643-3645m
    3641-3642m
    3643-3645m
    3645-3548m
    3648-3651m
    Core photo at depth: 3651-3653m
    Core photo at depth: 3653-3655m
    Core photo at depth: 3655-3658m
    Core photo at depth: 3658-3661m
    Core photo at depth: 3661-3663m
    3651-3653m
    3653-3655m
    3655-3658m
    3658-3661m
    3661-3663m
    Core photo at depth: 3663-3666m
    Core photo at depth: 3666-3669m
    Core photo at depth: 3669-3671m
    Core photo at depth:  
    Core photo at depth:  
    3663-3666m
    3666-3669m
    3669-3671m

  • 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
    TEST3
    3555.00
    3565.00
    19.04.1981 - 07:00
    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
    181.0
    36
    182.0
    0.00
    LOT
    SURF.COND.
    20
    449.0
    26
    465.0
    1.52
    LOT
    INTERM.
    13 3/8
    1171.0
    17 1/2
    1185.0
    1.64
    LOT
    INTERM.
    9 5/8
    2823.0
    12 1/4
    2839.0
    1.84
    LOT
    LINER
    7
    3773.0
    8 1/2
    2773.0
    0.00
    LOT

  • Drill stem tests (DST)
    Drill stem tests (DST)
    Test number
    From depth MD
    [m]
    To depth MD
    [m]
    Choke size
    [mm]
    1.0
    3671
    3674
    9.5
    2.0
    3637
    3638
    9.5
    3.0
    3555
    3565
    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
    2.0
    3.0
    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
    38
    194000
    0.797
    0.780
    5107
    2.0
    93
    322000
    0.790
    0.775
    3461
    3.0
    243
    913000
    0.792
    0.775
    3760

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL
    425
    3656
    CDM
    2827
    3778
    CDM AP
    2821
    3780
    DLL MSFL
    3475
    3778
    FDC
    449
    2824
    FDC CNL
    2827
    3779
    GR
    132
    181
    ISF SON
    449
    3777
    ISF SON GR
    181
    463
    RFT
    0
    0
    VELOCITY
    181
    3777

  • Lithostratigraphy

  • 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
    2.34
    pdf
    25.28

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    650
    1.13
    45.0
    waterbased
    1275
    1.14
    45.0
    waterbased
    1560
    1.13
    45.0
    waterbased
    1800
    1.12
    40.0
    waterbased
    2250
    1.12
    45.0
    waterbased
    2700
    1.12
    42.0
    waterbased
    3450
    1.50
    50.0
    waterbased

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2417.0
    [m]
    DC
    RRI
    2465.0
    [m]
    DC
    RRI
    2495.0
    [m]
    DC
    RRI
    2507.0
    [m]
    DC
    RRI
    2543.0
    [m]
    DC
    RRI
    2600.0
    [m]
    DC
    RRI
    2624.0
    [m]
    DC
    RRI
    2654.0
    [m]
    DC
    RRI
    2663.0
    [m]
    DC
    RRI
    2672.0
    [m]
    DC
    RRI
    2681.0
    [m]
    DC
    RRI
    2714.0
    [m]
    DC
    RRI
    2723.0
    [m]
    DC
    RRI
    2732.0
    [m]
    DC
    RRI
    2759.0
    [m]
    DC
    RRI
    2768.0
    [m]
    DC
    RRI
    2777.0
    [m]
    DC
    RRI
    2786.0
    [m]
    DC
    RRI
    2795.0
    [m]
    DC
    RRI
    2999.0
    [m]
    DC
    3029.0
    [m]
    DC
    3059.0
    [m]
    DC
    3089.0
    [m]
    DC
    3119.0
    [m]
    DC
    3149.0
    [m]
    DC
    3179.0
    [m]
    DC
    3209.0
    [m]
    DC
    3239.0
    [m]
    DC
    3269.0
    [m]
    DC
    3299.0
    [m]
    DC
    3329.0
    [m]
    DC
    3359.0
    [m]
    DC
    3389.0
    [m]
    DC
    3389.0
    [m]
    C
    3410.0
    [m]
    DC
    3419.0
    [m]
    DC
    3449.0
    [m]
    DC
    3459.0
    [m]
    DC
    3479.0
    [m]
    DC
    3509.0
    [m]
    DC
    3521.4
    [m]
    C
    3539.0
    [m]
    DC
    3541.0
    [m]
    C
    3568.0
    [m]
    C
    3568.8
    [m]
    C
    3569.0
    [m]
    DC
    3581.0
    [m]
    DC
    3581.6
    [m]
    C
    3582.9
    [m]
    C
    3585.3
    [m]
    C
    3588.3
    [m]
    C
    3590.2
    [m]
    C
    3591.5
    [m]
    C
    3598.6
    [m]
    C
    3600.1
    [m]
    C
    3605.6
    [m]
    C
    3608.5
    [m]
    C
    3611.5
    [m]
    C
    3614.0
    [m]
    C
    3615.9
    [m]
    C
    3623.6
    [m]
    C
    3626.3
    [m]
    C
    3628.1
    [m]
    C
    3631.2
    [m]
    C
    3634.5
    [m]
    C
    3635.0
    [m]
    C
    3638.4
    [m]
    C
    3641.1
    [m]
    C
    3643.5
    [m]
    C
    3646.5
    [m]
    C
    3647.2
    [m]
    C
    3651.2
    [m]
    C
    3658.4
    [m]
    C
    3660.0
    [m]
    C
    3661.9
    [m]
    C
    3668.2
    [m]
    C
    3670.0
    [m]
    C
    3671.0
    [m]
    DC
    3671.8
    [m]
    C
    3701.0
    [m]
    DC
    3731.0
    [m]
    DC
    3773.0
    [m]
    DC