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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9/2-6 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.
    9/2-6 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
    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.
    9/2-6
    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.
    854-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.
    58
    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,
    19.08.1996
    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.
    15.10.1996
    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.
    15.10.1998
    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.
    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.
    SANDNES FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    42.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    93.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5205.0
    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).
    3642.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    61.1
    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° 49' 7.47'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    4° 31' 10.95'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6409689.14
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    590282.12
    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.
    2867

  • Wellbore history
    General
    The deviated well 9/2-6 S is located on the Yme Gamma South East structure, and was drilled from slot 6 of the Yme template. The well was planned as an exploration well, being the first well drilled on the South East structure, but would be completed as an oil production well if commercial oil reserves were proven, or sidetracked to the Yme Gamma Vest structure if the oil column was less than 25 m. The well objective was also to evaluate whether the Bryne Formation in this well could be used as an Yme gas injection well.
    Operations and results
    Wildcat well 9/2-6 S was spudded with the jack-up installation Mærsk Giant on 19 August 1996 and drilled to a total depth of 5205.0 m (3600.8 m TVD SS) in the Middle Jurassic Bryne Formation. The 9/2-6 S well was planned with a "S" shaped profile, in order to drill vertically through the Sandnes Formation in the crestal area of the Gamma South East structure, to the east of the graben separating the South East segment from the Yme Gamma Vest Field. However, due to difficulties dropping angle, a deviation to the plan was made so that the angle would be dropped to 30 deg. The well was drilled with seawater and gelled bentonite pills through the 37 &" hole and with seawater and PAC pills through the 26" hole down to 842 m. KCl/Aquadrill (with glycols) mud was used from 842 m to 2481 m, and with ester-based Petrofree mud from 2481 to TD. From 4845 m and to TD the well was drilled with Neyfor Turbine and diamond bit. The top of the Sandnes Formation reservoir was encountered al 4783 m (3228.7 m TVD SS), and the oil/water-contact was found at 3277.0 m TVD SS, giving an oil column of 48 m. The Sandnes S12 target was penetrated approximately 3085.5 m South East of the platform, at an inclination of 20.4 deg. 12 February 1997. Two cores were cut in the interval 4793 - 4845 m across the OWC in the Sandnes Formation. Core 2 (4808 - 4845 m) retrieved 40.8 m. The extra 3.8 m retrieved in this core is believed to be the lower part of core 1 which had only 70% recovery. One FMT fluid sample was taken at 4809 m in the oil zone in the Sandnes Formation. The plan was to complete the well with a 7" liner through the reservoir section. The completion interval was 4798 - 4821m Sandnes Formation (S11) as planned. Exploration well 9/2-6 S was completed 15 October 1996 as an oil discovery and re-classified to development well 9/2-A-6 (oil producer).
    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
    4793.0
    4802.8
    [m ]
    2
    4804.2
    4844.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    49.8
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 4793-4798m
    Core photo at depth: 4798-4803m
    Core photo at depth: 4804-4809m
    Core photo at depth: 4809-4814m
    Core photo at depth: 4814-4819m
    4793-4798m
    4798-4803m
    4804-4809m
    4809-4814m
    4814-4819m
    Core photo at depth: 4819-4824m
    Core photo at depth: 4824-4829m
    Core photo at depth: 4829-4834m
    Core photo at depth: 4834-4839m
    Core photo at depth: 4839-4844m
    4819-4824m
    4824-4829m
    4829-4834m
    4834-4839m
    4839-4844m
    Core photo at depth: 4844-4845m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    4844-4845m

  • 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
    218.0
    36
    224.0
    0.00
    LOT
    CONDUCTOR
    20
    824.0
    26
    829.0
    1.50
    LOT
    INTERM.
    13 3/8
    1720.0
    17 1/2
    1725.0
    2.05
    LOT
    INTERM.
    9 5/8
    4785.0
    12 1/4
    4792.0
    0.00
    LOT
    LINER
    7
    5205.0
    8 1/2
    5205.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMT QUARTZDYNE CHT GR
    4803
    4841
    HEXDIP CHT GR
    824
    1726
    MLL DLL ZDL CN MAC CHT GR
    4785
    5102
    MWD DGR EWR DIR
    200
    5205
    ZDL CN MAC CHT GR
    4759
    4920

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.51

  • 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
    12.13

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    224
    1.03
    SEAWATER/BENT.
    380
    1.03
    SEAWATER/PAC
    797
    1.03
    SEAWATER/PAC
    829
    1.03
    SEAWATER/PAC
    832
    1.03
    DUMMY
    1182
    1.45
    32.0
    KCL/PAC/XANVIS
    1430
    1.45
    39.0
    KCL/PAC/XANVIS
    1478
    1.45
    46.0
    KCL/PAC/XANVIS
    1560
    1.45
    45.0
    KCL/PAC/XANVIS
    1725
    1.45
    44.0
    KCL/PAC/XANVIS
    1761
    1.64
    32.0
    KCL/PAC/XANVIS
    2052
    1.64
    36.0
    KCL/PAC/XANVIS
    2236
    1.64
    45.0
    KCL/PAC/XANVIS
    2290
    1.64
    40.0
    KCL/PAC/XANVIS
    2463
    1.60
    44.0
    KCL/PAC/XANVIS
    2604
    1.60
    56.0
    PETROFREE
    3121
    1.60
    55.0
    PETROFREE
    3670
    1.60
    52.0
    PETROFREE
    3842
    1.60
    52.0
    PETROFREE
    4150
    1.60
    53.0
    PETROFREE
    4204
    1.60
    51.0
    PETROFREE
    4252
    1.60
    51.0
    PETROFREE
    4274
    1.60
    51.0
    PETROFREE
    4606
    1.60
    53.0
    PETROFREE
    4792
    1.50
    40.0
    PETROFREE
    4793
    1.20
    18.0
    KCL/GLYCOL/PHPA
    4808
    1.20
    21.0
    KCL/GLYCOL/PHPA
    4824
    1.20
    21.0
    KCL/GLYCOL/PHPA
    4844
    1.35
    36.0
    KCL/GLYCOL/PHPA
    4845
    1.20
    21.0
    KCL/GLYCOL/PHPA
    4904
    1.20
    25.0
    KCL/GLYCOL/PHPA
    4995
    1.20
    26.0
    KCL/GLYCOL/PHPA
    5100
    1.20
    27.0
    KCL/GLYCOL/PHPA
    5184
    1.20
    27.0
    KCL/GLYCOL/PHPA
    5205
    1.20
    29.0
    KCL/GLYCOL/PHPA
    5205
    1.20
    29.0
    KCL/GLYCOL/PHPA

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    4571.0
    [m]
    DC
    GEOSTR
    4583.0
    [m]
    DC
    GEOSTR
    4595.0
    [m]
    DC
    GEOSTR
    4607.0
    [m]
    DC
    GEOSTR
    4619.0
    [m]
    DC
    GEOSTR
    4631.0
    [m]
    DC
    GEOSTR
    4643.0
    [m]
    DC
    GEOSTR
    4661.0
    [m]
    DC
    GEOSTR
    4673.0
    [m]
    DC
    GEOSTR
    4685.0
    [m]
    DC
    GEOSTR
    4697.0
    [m]
    DC
    GEOSTR
    4709.0
    [m]
    DC
    GEOSTR
    4721.0
    [m]
    DC
    GEOSTR
    4733.0
    [m]
    DC
    GEOSTR
    4745.0
    [m]
    DC
    GEOSTR
    4757.0
    [m]
    DC
    GEOSTR
    4769.0
    [m]
    DC
    GEOSTR
    4781.0
    [m]
    DC
    GEOSTR
    4790.0
    [m]
    DC
    GEOSTR
    4805.0
    [m]
    C
    WESTLB
    4819.6
    [m]
    C
    WESTLB
    4829.3
    [m]
    C
    WESTLB
    4843.3
    [m]
    C
    WESTLB
    4852.0
    [m]
    DC
    GEOSTR
    4864.0
    [m]
    DC
    GEOSTR
    4873.0
    [m]
    DC
    GEOSTR
    4888.0
    [m]
    DC
    GEOSTR
    4900.0
    [m]
    DC
    GEOSTR
    4912.0
    [m]
    DC
    GEOSTR
    4921.0
    [m]
    DC
    GEOSTR
    4933.0
    [m]
    DC
    GEOSTR
    4945.0
    [m]
    DC
    GEOSTR
    4957.0
    [m]
    DC
    GEOSTR
    4969.0
    [m]
    DC
    GEOSTR
    4984.0
    [m]
    DC
    GEOSTR
    4993.0
    [m]
    DC
    GEOSTR
    5005.0
    [m]
    DC
    GEOSTR
    5017.0
    [m]
    DC
    GEOSTR
    5026.0
    [m]
    DC
    GEOSTR
    5038.0
    [m]
    DC
    GEOSTR
    5050.0
    [m]
    DC
    GEOSTR
    5062.0
    [m]
    DC
    GEOSTR
    5077.0
    [m]
    DC
    GEOSTR
    5089.0
    [m]
    DC
    GEOSTR
    5104.0
    [m]
    DC
    GEOSTR
    5116.0
    [m]
    DC
    GEOSTR
    5125.0
    [m]
    DC
    GEOSTR
    5137.0
    [m]
    DC
    GEOSTR
    5149.0
    [m]
    DC
    GEOSTR
    5161.0
    [m]
    DC
    GEOSTR
    5173.0
    [m]
    DC
    GEOSTR
    5185.0
    [m]
    DC
    GEOSTR
    5197.0
    [m]
    DC
    GEOSTR
    5205.0
    [m]
    DC
    GEOSTR