Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.12.2024 - 01:25
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9/2-7 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.
    9/2-7 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).
    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.
    RE-CLASS TO DEV
    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.
    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.
    9/2-7
    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.
    887-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.
    50
    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,
    22.04.1997
    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.
    10.06.1997
    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.
    10.06.1999
    Predrilled entry date
    Date when the predrilling activity of the wellbore started (see also Entry date).
    23.06.1996
    Predrilled completion date
    Date when the predrilling activity of the wellbore was completed (see also completion date).
    25.06.1996
    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.
    24.09.2002
    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
    Reclassified to wellbore
    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 Norwegian Offshore Directorate bulletins.
    LATE 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.
    SANDNES 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.
    BRYNE 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.
    77.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4099.0
    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).
    3393.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    50.9
    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.
    BRYNE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    57° 45' 15.15'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    4° 21' 21.75'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6402298.71
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    580703.80
    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.
    3087

  • Wellbore history
    General
    The deviated well 9/2-7 S was drilled as an exploration well to identify the oil potential in the Beta Vest prospect on the Yme Field in PL 114. The well was drilled in the northern segment of the Beta Vest structure with the sandstones of the Sandnes Formation as the target horizon. The well was planned to be completed as an oil producer and be renamed to 9/2-B-3H.
    Operations and results
    Wildcat well 9/2-7 S was spudded with the semi-submersible installation "Byford Dolphin" on 22 April 1997 and drilled to a total depth of 4099 m (3369.7 m TVD MSL) in the Middle Jurassic Bryne Formation. It was drilled from slot 3 on the Yme Beta HOST template with an "S" shaped profile in order to drill vertically through the Sandnes Formation. The Sandnes S12 target was penetrated approximately 1757 m North North-West of the template, at an inclination of about 5 deg. A 7" liner was run over the reservoir section. The bottom section fro 3923 m to TD was drilled with turbine and diamond bit. The well was drilled with seawater to 1192 m, with KCl polymer mud from 1192 m to 256 m, with ester-based Petrofree mud from 2576 m to 3867 m, and with Aquadrill glycol mud from 3867 m to TD. The well found oil all through the Sandnes Formation. The top of the Sandnes Formation was encountered at 3854 m (3125.6 m TVD MSL), with the top of the Sandnes Formation S11 reservoir sandstone at 3861,7 m (3133,3 m TVD MSL). The oil/water-contact was found in the Bryne Formation sandstones at 4067m MD (3337.9 m TVD MSL). Two cores were cut in the interval 3868 m - 3923 m in the Sandnes Formation. Two FMT fluid samples were taken at 3896 m in the Sandnes Formation oil zone. Exploration well 9/2-7 S was completed 10 June 1997 as an oil discovery and re-classified to development well 9/2-B-3 H.
    Testing
    No drill stem test was performed.

  • 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
    3868.0
    3892.2
    [m ]
    2
    3892.8
    3922.4
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    53.8
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 3868-3873m
    Core photo at depth: 3873-3878m
    Core photo at depth: 3878-3883m
    Core photo at depth: 3883-3888m
    Core photo at depth: 3888-3892m
    3868-3873m
    3873-3878m
    3878-3883m
    3883-3888m
    3888-3892m
    Core photo at depth: 3892-3897m
    Core photo at depth: 3897-3902m
    Core photo at depth: 3902-3907m
    Core photo at depth: 3907-3912m
    Core photo at depth: 3912-3917m
    3892-3897m
    3897-3902m
    3902-3907m
    3907-3912m
    3912-3917m
    Core photo at depth: 3917-3922m
    Core photo at depth: 3922-3923m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    3917-3922m
    3922-3923m

  • 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
    SURF.COND.
    30
    162.0
    36
    163.0
    0.00
    LOT
    CONDUCTOR
    13 3/8
    1185.0
    17 1/2
    1186.0
    0.00
    LOT
    INTERM.
    9 5/8
    3857.0
    12 1/4
    3860.0
    0.00
    LOT
    LINER
    7
    4099.0
    8 1/2
    4099.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMT QUARTZDYNE CHT GR
    3868
    4067
    MWD RES DIR GR
    167
    4099
    ZDL CN MAC DPIL CHT GR
    1185
    3863
    ZDL DLL MLL CN MAC CHT GR
    3855
    4086

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.68

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    2.00
    pdf
    0.58

  • 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
    15.36

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1192
    1.39
    SEAWATER/PAC
    1311
    1.60
    31.0
    KCL/PAC/XANVIS
    1687
    1.60
    32.0
    KCL/PAC/PHPA
    1868
    1.39
    29.0
    KCL/PAC/PHPA
    1868
    1.39
    35.0
    KCL/PAC/PHPA
    2169
    1.57
    45.0
    KCL/PAC/PHPA
    2229
    1.57
    46.0
    KCL/PAC/PHPA
    2440
    1.57
    42.0
    KCL/PAC/PHPA
    2576
    1.57
    44.0
    KCL/PAC/PHPA
    2576
    1.57
    45.0
    PETROFREE
    2581
    1.60
    DUMMY
    2806
    1.60
    44.0
    PETROFREE
    2978
    1.60
    44.0
    PETROFREE
    3088
    1.60
    42.0
    PETROFREE
    3475
    1.60
    40.0
    PETROFREE
    3518
    1.60
    44.0
    PETROFREE
    3723
    1.60
    39.0
    PETROFREE
    3832
    1.60
    -462.0
    PETROFREE
    3852
    1.60
    -461.0
    PETROFREE
    3867
    1.60
    -461.0
    PETROFREE
    3881
    1.30
    36.0
    AQUACOL
    3893
    1.30
    35.0
    KCL/PAC/XANVIS
    3913
    1.30
    37.0
    AQUACOL
    3923
    1.30
    30.0
    KCL/PAC/XANVIS
    4032
    1.30
    36.0
    AQUACOL
    4099
    1.30
    39.0
    AQUACOL

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3681.0
    [m]
    DC
    GEOSTR
    3690.0
    [m]
    DC
    GEOSTR
    3699.0
    [m]
    DC
    GEOSTR
    3708.0
    [m]
    DC
    GEOSTR
    3717.0
    [m]
    DC
    GEOSTR
    3726.0
    [m]
    DC
    GEOSTR
    3735.0
    [m]
    DC
    GEOSTR
    3744.0
    [m]
    DC
    GEOSTR
    3753.0
    [m]
    DC
    GEOSTR
    3762.0
    [m]
    DC
    GEOSTR
    3771.0
    [m]
    DC
    GEOSTR
    3780.0
    [m]
    DC
    GEOSTR
    3789.0
    [m]
    DC
    GEOSTR
    3798.0
    [m]
    DC
    GEOSTR
    3807.0
    [m]
    DC
    GEOSTR
    3816.0
    [m]
    DC
    GEOSTR
    3825.0
    [m]
    DC
    GEOSTR
    3834.0
    [m]
    DC
    GEOSTR
    3843.0
    [m]
    DC
    GEOSTR
    3852.0
    [m]
    DC
    GEOSTR
    3861.0
    [m]
    DC
    GEOSTR
    3864.4
    [m]
    C
    WESTL
    3871.9
    [m]
    C
    WESTL
    3872.5
    [m]
    C
    WESTL
    3878.6
    [m]
    C
    WESTL
    3885.5
    [m]
    C
    WESTL
    3887.5
    [m]
    C
    WESTL
    3889.5
    [m]
    C
    WESTL
    3893.7
    [m]
    C
    WESTL
    3901.8
    [m]
    C
    WESTL
    3907.0
    [m]
    C
    WESTL
    3908.8
    [m]
    C
    WESTL
    3918.9
    [m]
    C
    WESTL
    3927.0
    [m]
    DC
    GEOSTR
    3936.0
    [m]
    DC
    GEOSTR
    3945.0
    [m]
    DC
    GEOSTR
    3954.0
    [m]
    DC
    GEOSTR
    3963.0
    [m]
    DC
    GEOSTR
    3972.0
    [m]
    DC
    GEOSTR
    3981.0
    [m]
    DC
    GEOSTR
    3990.0
    [m]
    DC
    GEOSTR
    3999.0
    [m]
    DC
    GEOSTR
    4008.0
    [m]
    DC
    GEOSTR
    4017.0
    [m]
    DC
    GEOSTR
    4026.0
    [m]
    DC
    GEOSTR
    4035.0
    [m]
    DC
    GEOSTR
    4044.0
    [m]
    DC
    GEOSTR
    4053.0
    [m]
    DC
    GEOSTR
    4062.0
    [m]
    DC
    GEOSTR
    4071.0
    [m]
    DC
    GEOSTR
    4080.0
    [m]
    DC
    GEOSTR
    4089.0
    [m]
    DC
    GEOSTR
    4095.0
    [m]
    DC
    GEOSTR