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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34/10-5

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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.
    34/10-5
    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
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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.
    34/10-5
    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.
    228-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.
    77
    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,
    18.10.1979
    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.
    02.01.1980
    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.
    02.01.1982
    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.
    06.12.2012
    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.
    TARBERT 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.
    136.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2780.0
    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).
    2778.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    7.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    79
    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 TRIASSIC
    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.
    LUNDE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 11' 25.35'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 10' 23.39'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6784434.79
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    455546.36
    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.
    428

  • Wellbore history
    General
    Well 34/10-5 was drilled in the western part of the Delta Closure in Block 34/10 in the Northern North Sea. The primary objective of well 34/10-5 was sandstones of Middle Jurassic age. Secondary objectives were sandstones of Early Jurassic age.
    Operations and results
    Appraisal well 34/10-5 was spudded with the semi-submersible installation Ross Rig on 18 October 1979 and drilled to TD at 2780 m in the Late Triassic Lunde Formation. Apart from lost circulation problems in the 12 1/4" section the drilling itself went quite smoothly. However, almost 21 days were lost due to bad weather conditions. The well was drilled with spud mud down to 518 m, with gel/lignosulphonate from 518 to 1775 m, with gel/lignite/lignosulphonate from 1775 m to 2210 m, and with gel/lignosulphonate from 2210 m to TD.
    The Brent Group was encountered at 1896 m and was oil bearing down to the OWC at ca 1972 m. Test results indicated the same fluid system as in the previous wells drilled on the structure.
    Oil shows were recorded from 1250 m and downwards more or less continuously on claystone, limestone and siltstone to top Brent level. No shows were recorded below OWC.
    Four cores were recovered in the interval from 1917 to 1974.7 m. One RFT fluid sample from the Brent Group recovered ca 0.5 l oil and 1 l of mud filtrate.
    The well was permanently abandoned on 2 January 1980 as an oil appraisal well.
    Testing
    The Tarbert Formation was tested from perforations in the interval 1925 -1927 m. The zone produced ca 724 Sm3 oil and 59400 Sm3 gas /day. No water was produced. The GOR was 82 Sm3/Sm3 and the oil gravity was 29 deg API. The bottom hole maximum temperature was 74.5 deg C, measured at 1907 m.

  • 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]
    220.00
    2780.00

  • 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
    1910.7
    1928.7
    [m ]
    2
    1930.0
    1934.2
    [m ]
    3
    1949.2
    1959.8
    [m ]
    4
    1967.4
    1974.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    39.4
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1910-1913m
    Core photo at depth: 1913-1916m
    Core photo at depth: 1916-1918m
    Core photo at depth: 1918-1921m
    Core photo at depth: 1921-1924m
    1910-1913m
    1913-1916m
    1916-1918m
    1918-1921m
    1921-1924m
    Core photo at depth: 1924-1926m
    Core photo at depth: 1926-1928m
    Core photo at depth: 1930-1932m
    Core photo at depth: 1932-1934m
    Core photo at depth: 1949-1951m
    1924-1926m
    1926-1928m
    1930-1932m
    1932-1934m
    1949-1951m
    Core photo at depth: 1951-1954m
    Core photo at depth: 1954-1957m
    Core photo at depth: 1957-1959m
    Core photo at depth: 1967-1970m
    Core photo at depth: 1970-1972m
    1951-1954m
    1954-1957m
    1957-1959m
    1967-1970m
    1970-1972m
    Core photo at depth: 1972-1974m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    1972-1974m

  • 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
    225.0
    36
    227.0
    0.00
    LOT
    SURF.COND.
    20
    502.0
    26
    518.0
    1.59
    LOT
    INTERM.
    13 3/8
    1598.0
    17 1/2
    1610.0
    1.76
    LOT
    INTERM.
    9 5/8
    1766.0
    12 1/4
    1775.0
    1.98
    LOT
    LINER
    7
    2209.0
    8 1/2
    2210.0
    1.94
    LOT
    OPEN HOLE
    2780.0
    6
    2780.0
    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
    1900
    1902
    12.7
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    74
    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
    724
    59400
    0.882
    82

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL GR
    460
    1766
    CBL VDL GR
    1611
    2208
    DLL MSFL GR
    1867
    2159
    FDC CNL GR CAL
    1765
    2776
    FDC GR CAL
    502
    1770
    GEODIP
    1889
    2001
    HDT
    1776
    2160
    HDT
    2208
    2777
    ISF SON GR SP
    161
    2775
    VELOCITY
    296
    2770

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.93
    pdf
    0.63

  • Documents – reported by the production licence (period for duty of secrecy expired)

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1475
    1.25
    waterbased
    1540
    1.32
    waterbased
    1705
    1.55
    waterbased
    1885
    1.75
    waterbased
    1943
    1.78
    waterbased
    2090
    1.77
    waterbased

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1859.0
    [m]
    DC
    1862.0
    [m]
    DC
    2156.0
    [m]
    DC
    2162.0
    [m]
    DC
    2189.0
    [m]
    DC
    2207.0
    [m]
    DC
    2213.0
    [m]
    DC
    2228.0
    [m]
    DC
    2276.0
    [m]
    DC
    2285.0
    [m]
    DC
    2294.0
    [m]
    DC
    2300.0
    [m]
    DC
    2357.0
    [m]
    DC

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    1911.00
    [m ]
    1912.00
    [m ]
    1914.00
    [m ]
    1918.00
    [m ]
    1921.00
    [m ]
    1924.00
    [m ]
    1926.00
    [m ]
    1931.00
    [m ]
    1932.00
    [m ]
    1934.00
    [m ]
    1950.00
    [m ]
    1952.00
    [m ]
    1955.00
    [m ]
    1959.00
    [m ]