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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8/10-1

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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.
    8/10-1
    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
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    8/10-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    PG 030340 & SP30
    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.
    Phillips Petroleum Company Norway
    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.
    27-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.
    33
    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,
    30.05.1969
    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.
    01.07.1969
    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.
    01.07.1971
    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.
    24.09.2004
    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
    Reentry
    Status whether the wellbore has been re-entered (YES) or not (NO). Re-entered wellbores are not included in the count when wellbores are presented in statistical overviews.
    NO
    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.
    DRY
    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
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    27.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    66.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3089.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    13.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    101
    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 PERMIAN
    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.
    ZECHSTEIN GP
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    57° 8' 1.04'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 3' 55.09'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6332404.31
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    503952.97
    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.
    166

  • Wellbore history
    General
    Exploration well 8/10-1 was drilled on a gentle salt dome structure about 12 km west of the Ula Field on the Sørvestlandet High. The objectives were to test Tertiary and Mesozoic horizons. More specifically, the well should test the Tertiary Miocene section equivalent to the gas-bearing sand section in well 2/3-1 (35 miles southeast), Eocene sands which had minor gas shows in well 7/8-1 (25 miles northwest) and with oil shows in the Shell 1/3-1, Paleocene sands productive in the Cod Field (25 miles east), fractured Upper Cretaceous limestone with condensate and gas shows in well 1/3-1 (20 miles southwest), and Jurassic and Triassic sands that were very porous and permeable in well 7/8-1. The latter also had small shows in wells 7/8-1 and 9/4-1 (50 miles northwest).
    Operations and results
    The well was spudded with the semi-submersible installation Ocean Viking on 30 May 1969 and drilled to TD at 3099 m in the Late Permian Zechstein Group. The hole deviation increased considerably from about 2225 m to TD, with a maximum of 13.5 degrees at 2774 m and about 10 degrees at the last survey point at 3018 m. Assuming an average deviation of 9 degrees from 2200 m to TD this results in 3089 m TVD RKB at TD. The pipe stuck at 3042 m. It was worked free after spotting diesel and Mudban. Otherwise no significant problems were encountered during drilling operations. The well was drilled with seawater down to 655 m, with a sea water/gel mud system from 655 m to 2134 m, and with a lignosulphonate type mud from 2134 m to TD. Below 655 m the well was drilled with 1 % to 8 % of diesel oil in the mud, with the higher concentrations towards TD.
    None of the sedimentary sequences penetrated by the well contained hydrocarbons. A more or less continuous Triassic section consisted of mainly shale /claystone with traces of sand. The Late Jurassic was represented by the Sandnes Formation sandstone and the Kimmeridge Clay (Flekkefjord Formation). An unconformity marks the boundary to the Lower Cretaceous shale/claystone sequence. Late Cretaceous sedimentation of carbonates took place in an open marine environment. The Våle Formation is represented in the well and shows the onset of erosion and clastic sedimentation at the beginning of the Tertiary. Volcanic activity is seen at the Paleocene Eocene boundary (Balder Formation). Sedimentation of mostly fine-grained clastic sediments is characteristic for the Tertiary period. This was a period of continuous subsidence in the North Sea. No core or sidewall core was taken. No fluid sample was taken.
    The well was permanently abandoned as a dry hole on 1 July 1969.
    Testing
    No drill stem test was performed

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    NO
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    640.08
    3090.67

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3240.0
    [ft]
    DC
    PHILLIP?
    9160.0
    [ft]
    DC
    (ALLE)
    9200.0
    [ft]
    DC
    9260.0
    [ft]
    DC

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.24

  • 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
    3.32

  • Documents – Norwegian Offshore Directorate papers
    Documents – Norwegian Offshore Directorate papers
    Document name
    Document format
    Document size [MB]
    pdf
    10.54
    pdf
    48.65

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CDM
    2125
    3042
    DIR
    2125
    3017
    IEL
    2125
    3090
    SONIC CALIPER
    605
    2131
    SONIC CALIPER
    2125
    3095
    SONIC GR CALIPER
    93
    2125

  • 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
    20
    156.0
    26
    157.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    606.0
    17 1/2
    610.0
    0.00
    LOT
    INTERM.
    9 5/8
    2125.0
    12 1/4
    2126.0
    0.00
    LOT
    OPEN HOLE
    3099.0
    8 1/2
    3099.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    607
    1.02
    seawater
    2133
    1.55
    53.0
    12.0
    seawater
    2591
    1.49
    47.0
    12.0
    seawater
    2713
    1.55
    55.0
    16.0
    seawater
    3042
    1.66
    58.0
    19.0
    seawater
    3097
    1.72
    55.0
    15.0
    seawater