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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34/7-2

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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.
    34/7-2
    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
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    34/7-2
    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.
    Saga Petroleum ASA
    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.
    424-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.
    39
    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,
    02.09.1984
    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.
    10.10.1984
    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.
    10.10.1986
    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.
    26.10.2009
    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
    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.
    26.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    245.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2475.0
    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).
    2475.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1.75
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    92
    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° 17' 57.16'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 9' 40.9'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6796565.81
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    455067.40
    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.
    233

  • Wellbore history
    General
    Well 34/7-2 was drilled just north of the Tordis Øst discovery in the northern North Sea. The main objectives were to test for hydrocarbons in the Jurassic Statfjord Formation and in the Triassic Lunde Formation.
    Operations and results
    Wildcat well 34/7-2 was spudded with the semi-submersible installation Treasure Saga on 2 September 1984 and drilled to TD at 2475 m in the Late Triassic Lunde Formation. A total of 83 hours rig time was NPT due to repairs resulting from a failed RIH with the 26" bit after underreaming to 816 m, and a leak in the acoustic system discovered after setting the 9 5/8" casing at 2031 m. The well was drilled with seawater and hi-vis pills down to 848 m, with KCl/polymer mud from 848 m to 2042 m, and with lignosulfonate mud from 2042 m to TD. No shallow gas was encountered.
    Except for the sandy Utsira Formation and two sandstone units in the Hordaland Group (in the order of 40 - 50 m each) the well proved mainly claystones down to the Statfjord Formation at 2152 m. At BCU (2085 m) there was a major hiatus from Pliensbachian to Campanian. The Lunde Formation was encountered at 2271 m. The gross thickness of the Statfjord in this well is 119 m with 43.5 m of net sand. The well drilled some 204 m into the Lunde Formation, which in the upper part proved a siltstone sequence with minor sandstone and claystone, while the lowermost 117 m proved a sequence of sandstones alternating with claystones. Of this sequence some 41.3 m could be considered as net. No live hydrocarbons were encountered by the well. Residual oil was found in base Amundsen - top Statfjord Formations, however, cores showed low porosity and essentially no net sand. Extraction data from geochemical analyses also indicate migrated hydrocarbons in the Shetland Group.
    Three cores totalling 28.8 m (recovered 22 m, 76% recovery) were cut across the stratigraphic border zone between Amundsen Formation (Dunlin Group) and Upper Statfjord Formation. The FMT tool was run to acquire pressure data and one FMT fluid sample was taken at 2110.5 m. It recovered only mud filtrate.
    The well was permanently abandoned on 10 October 1984 as a dry well.
    Testing
    No drill stem test was performed.

  • 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]
    420.00
    2475.00

  • 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
    2147.3
    2160.2
    [m ]
    2
    2161.6
    2164.0
    [m ]
    3
    2168.6
    2175.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    22.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2147-2153m
    Core photo at depth: 2153-2158m
    Core photo at depth: 2159-2160m
    Core photo at depth: 2161-2164m
    Core photo at depth: 2168-2174m
    2147-2153m
    2153-2158m
    2159-2160m
    2161-2164m
    2168-2174m
    Core photo at depth: 2174-2175m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    2174-2175m

  • 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
    394.0
    36
    684.0
    0.00
    LOT
    SURF.COND.
    20
    848.0
    26
    861.0
    1.58
    LOT
    INTERM.
    13 3/8
    1549.0
    17 1/2
    1570.0
    1.69
    LOT
    INTERM.
    9 5/8
    2031.0
    12 1/4
    2042.0
    1.88
    LOT
    OPEN HOLE
    2475.0
    8 1/2
    2475.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    BHC GR
    2120
    2472
    CALI
    394
    850
    CALI
    848
    1524
    CALI
    848
    1539
    CALI
    1550
    2040
    CALI
    1553
    2041
    CDL CNL GR
    2032
    2468
    CDL DNL GR
    2120
    2468
    CDL GR
    484
    1559
    CDL GR
    1550
    2038
    COREGUN
    415
    845
    COREGUN
    865
    1557
    COREGUN
    1560
    2025
    COREGUN
    1720
    2470
    DIFL BHC GR
    394
    860
    DIFL BHC GR
    848
    1565
    DIFL BHC GR
    1550
    2041
    DIFL BHC GR
    2032
    2176
    DIFL BHC GR
    2032
    2473
    DIPLOG
    2032
    2471
    DL LMLL GR
    2120
    2473
    FMT
    2138
    2458
    FMT
    2152
    2171
    GR
    0
    397
    SL
    2032
    2463
    VELOCITY
    272
    2473

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.33
    pdf
    4.85

  • 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
    13.04

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    330
    1.05
    100.0
    20.0
    WATER BASED
    03.09.1984
    397
    1.05
    100.0
    20.0
    WATER BASED
    06.09.1984
    412
    1.05
    100.0
    20.0
    WATER BASED
    06.09.1984
    684
    1.10
    100.0
    20.0
    WATER BASED
    06.09.1984
    861
    1.13
    15.0
    25.0
    WATER BASED
    10.09.1984
    861
    1.16
    15.0
    30.0
    WATER BASED
    12.09.1984
    861
    1.16
    10.0
    41.0
    WATER BASED
    10.09.1984
    861
    1.16
    15.0
    30.0
    WATER BASED
    12.09.1984
    861
    1.16
    10.0
    41.0
    WATER BASED
    10.09.1984
    1565
    1.37
    41.0
    21.0
    WATER BASED
    17.09.1984
    1565
    1.22
    16.0
    21.0
    WATER BASED
    16.09.1984
    1565
    1.37
    41.0
    21.0
    WATER BASED
    17.09.1984
    1570
    1.44
    42.0
    24.0
    WATER BASED
    20.09.1984
    1766
    1.50
    46.0
    20.0
    WATER BASED
    25.09.1984
    2025
    1.59
    46.0
    20.0
    WATER BASED
    25.09.1984
    2042
    1.59
    47.0
    16.0
    WATER BASED
    25.09.1984
    2042
    1.59
    47.0
    16.0
    WATER BASED
    25.09.1984
    2042
    1.59
    50.0
    20.0
    WATER BASED
    25.09.1984
    2148
    1.80
    55.0
    12.0
    WATER BASED
    29.09.1984
    2169
    1.80
    55.0
    18.0
    WATER BASED
    01.10.1984
    2177
    1.80
    55.0
    17.0
    WATER BASED
    01.10.1984
    2242
    1.72
    50.0
    14.0
    WATER BASED
    01.10.1984
    2313
    1.71
    50.0
    16.0
    WATER BASED
    01.10.1984
    2410
    1.71
    50.0
    16.0
    WATER BASED
    03.10.1984
    2475
    1.71
    45.0
    15.0
    WATER BASED
    03.10.1984
    2475
    1.71
    44.0
    14.0
    WATER BASED
    04.10.1984
    2475
    1.71
    45.0
    12.0
    WATER BASED
    07.10.1984
    2475
    1.71
    51.0
    13.0
    WATER BASED
    07.10.1984
    2475
    1.71
    44.0
    14.0
    WATER BASED
    04.10.1984
    2475
    1.71
    51.0
    13.0
    WATER BASED
    07.10.1984
    2475
    1.71
    45.0
    12.0
    WATER BASED
    07.10.1984

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1048.0
    [m]
    SWC
    RRI
    1084.0
    [m]
    SWC
    RRI
    1138.0
    [m]
    SWC
    RRI
    1157.0
    [m]
    SWC
    RRI
    1192.0
    [m]
    SWC
    RRI
    1227.0
    [m]
    SWC
    RRI
    1287.0
    [m]
    SWC
    RRI
    1336.5
    [m]
    SWC
    RRI
    1426.0
    [m]
    SWC
    RRI
    1480.0
    [m]
    SWC
    RRI
    1560.0
    [m]
    DC
    RRI
    1580.0
    [m]
    DC
    RRI
    1595.0
    [m]
    SWC
    RRI
    1610.0
    [m]
    DC
    RRI
    1615.0
    [m]
    SWC
    RRI
    1620.0
    [m]
    DC
    RRI
    1650.0
    [m]
    SWC
    RRI
    1680.0
    [m]
    DC
    RRI
    1710.0
    [m]
    DC
    RRI
    1730.0
    [m]
    DC
    RRI
    1745.0
    [m]
    SWC
    RRI
    1784.0
    [m]
    DC
    RRI
    1814.0
    [m]
    DC
    RRI
    1844.0
    [m]
    DC
    RRI
    1863.0
    [m]
    SWC
    RRI
    1874.0
    [m]
    DC
    RRI
    1887.0
    [m]
    SWC
    RRI
    1905.0
    [m]
    SWC
    RRI
    1919.0
    [m]
    DC
    RRI
    1940.0
    [m]
    SWC
    RRI
    1953.0
    [m]
    SWC
    RRI
    1967.0
    [m]
    DC
    RRI
    1979.0
    [m]
    DC
    RRI
    1998.0
    [m]
    SWC
    RRI
    2010.0
    [m]
    SWC
    RRI
    2025.0
    [m]
    SWC
    RRI
    2039.0
    [m]
    DC
    RRI
    2040.0
    [m]
    SWC
    RRI
    2054.0
    [m]
    DC
    RRI
    2060.0
    [m]
    SWC
    RRI
    2069.0
    [m]
    DC
    RRI
    2077.5
    [m]
    SWC
    RRI
    2083.0
    [m]
    SWC
    RRI
    2084.0
    [m]
    DC
    RRI
    2099.0
    [m]
    DC
    RRI
    2114.0
    [m]
    DC
    RRI
    2127.0
    [m]
    SWC
    RRI
    2129.0
    [m]
    DC
    RRI
    2143.0
    [m]
    SWC
    RRI
    2144.0
    [m]
    DC
    RRI
    2148.7
    [m]
    C
    RRI
    2154.9
    [m]
    C
    RRI
    2162.8
    [m]
    C
    RRI
    2168.3
    [m]
    SWC
    RRI
    2189.0
    [m]
    DC
    RRI
    2193.0
    [m]
    SWC
    RRI
    2204.0
    [m]
    DC
    RRI
    2208.5
    [m]
    SWC
    RRI
    2300.0
    [m]
    DC
    RRI
    2340.0
    [m]
    DC
    RRI
    2360.0
    [m]
    DC
    RRI
    2420.0
    [m]
    DC
    RRI

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    4512.80
    [m ]
    4514.70
    [m ]
    4516.35
    [m ]
    4518.90
    [m ]