Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.12.2024 - 01:25
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34/7-9

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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.
    34/7-9
    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
    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.
    34/7-9
    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.
    510-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.
    61
    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,
    13.04.1986
    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.
    12.06.1986
    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.
    12.06.1988
    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.
    20.06.2011
    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.
    LATE TRIASSIC
    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.
    LUNDE FM
    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.
    330.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3240.0
    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).
    3239.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.7
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    93
    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° 29' 11.99'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 11' 43.6'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6817423.20
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    457150.88
    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.
    889
  • Wellbore history

    General
    Well 34/7 9 was drilled on the Snorre structure in the northernmost part of the block. The main objective of the well was to test the hydrocarbon potential of the upper Lunde Formation in the Snorre structure.
    Operations and results
    Appraisal well 34/7-9 was spudded with the semi-submersible installation Treasure Saga on 13 April 1986 and drilled to TD at 3240 m in the Late Triassic Lunde Formation. Minor shallow gas peaks were observed from mud gas readings in the pilot hole below the 30" casing at 498 - 500 m. Drilling proceeded without significant problems. The well was drilled with spud mud down to 471 m, with gel mud from 471 m to 915 m, with gypsum/polymer mud from 915 m to 2479 m, and with gel mud from 2479 m to TD.
    Well 34/7-9 penetrated the reservoir at 2442.5 m, 50 m deeper than prognosed. From FMT pressure points the the oil water contact (OWC) was defined in the upper Lunde at 2600 m (2574 m MSL). The average log porosity in the oil zone was 25.6%, the net/gross was 0.24, and the average water saturation was 30%.
    Shows were seen from 2100 to 2315 m in the Shetland Group. Below 2315 m the shows disappeared and did not reappear before the upper Lunde reservoir was penetrated at 2442.5 m. Down to a sandstone/claystone boundary at 2594 m, the sandstones showed a pale brown oil stain, fair to good odour, 100% - 90% strong, patchy, yellow to light yellow fluorescence, fast to instant streaming bluish white cut and a pale yellow residue upon evaporation. Below 2594 m no shows were seen.
    A total of 10 cores were cut and recovered during drilling of the well. The cores were taken in the upper Lunde Formation from 2470.0 to 2720.5 m core depth. The average core recovery was 96.7%. Logger's depths for the cores were from 1.75 to 4.00 m shallower than the core depths. FMT fluid samples were taken at 2585 m and 2592 m. All analysed sample chambers contained black oil and brown-grey water with sediments.
    The well was permanently abandoned on 12 June 1986 as an oil appraisal.
    Testing
    One DST was carried out with four zones in the upper Lunde Formation flowing simultaneously: 2501 - 2504 m, 2506 - 2515 m, 2527 - 2536 m, and 2550 - 2553. The zones were flowed for 175 hours, followed by a build-up of 50 hours. During the main flow period the flow rate through a 15.9 mm choke decreased from 1400 Sm3 /day to 896 Sm3 /day and the corresponding wellhead pressure decreased from 130 to 93 bar. Fluid analyses of pressurized samples from the test gave a GOR of 103 Sm3/Sm3 and stock tank oil density of 0.8258 g/cm3. The maximum temperature recorded at reference depth, mid-perforations, was 93.3 deg C.
  • 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]
    480.00
    3240.00
  • 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
    2470.0
    2494.5
    [m ]
    2
    2494.5
    2518.0
    [m ]
    3
    2518.0
    2546.0
    [m ]
    4
    2546.0
    2574.0
    [m ]
    5
    2574.0
    2593.0
    [m ]
    6
    2593.0
    2607.7
    [m ]
    7
    2615.0
    2642.3
    [m ]
    8
    2643.0
    2670.5
    [m ]
    9
    2670.0
    2692.5
    [m ]
    10
    2692.5
    2720.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    243.0
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES
  • Core photos

    Core photos
    Core photo at depth: 2470-2475m
    Core photo at depth: 2475-2480m
    Core photo at depth: 2480-2485m
    Core photo at depth: 2485-2490m
    Core photo at depth: 2490-2495m
    2470-2475m
    2475-2480m
    2480-2485m
    2485-2490m
    2490-2495m
    Core photo at depth: 2495-2499m
    Core photo at depth: 2499-2504m
    Core photo at depth: 2504-2509m
    Core photo at depth: 2509-2514m
    Core photo at depth: 2514-2518m
    2495-2499m
    2499-2504m
    2504-2509m
    2509-2514m
    2514-2518m
    Core photo at depth: 2518-2523m
    Core photo at depth: 2523-2528m
    Core photo at depth: 2528-2533m
    Core photo at depth: 2533-2538m
    Core photo at depth: 2538-2543m
    2518-2523m
    2523-2528m
    2528-2533m
    2533-2538m
    2538-2543m
    Core photo at depth: 2543-2546m
    Core photo at depth: 2546-2551m
    Core photo at depth: 2551-2556m
    Core photo at depth: 2556-2561m
    Core photo at depth: 2561-2566m
    2543-2546m
    2546-2551m
    2551-2556m
    2556-2561m
    2561-2566m
    Core photo at depth: 2566-2571m
    Core photo at depth: 2571-2574m
    Core photo at depth: 2574-2579m
    Core photo at depth: 2579-2584m
    Core photo at depth: 2584-2589m
    2566-2571m
    2571-2574m
    2574-2579m
    2579-2584m
    2584-2589m
    Core photo at depth: 2589-2593m
    Core photo at depth: 2593-2598m
    Core photo at depth: 2598-2603m
    Core photo at depth: 2603-2608m
    Core photo at depth: 2615-2620m
    2589-2593m
    2593-2598m
    2598-2603m
    2603-2608m
    2615-2620m
    Core photo at depth: 2620-2625m
    Core photo at depth: 2625-2630m
    Core photo at depth: 2630-2635m
    Core photo at depth: 2635-2640m
    Core photo at depth: 2640-2642m
    2620-2625m
    2625-2630m
    2630-2635m
    2635-2640m
    2640-2642m
    Core photo at depth: 2643-2648m
    Core photo at depth: 2648-2653m
    Core photo at depth: 2653-2658m
    Core photo at depth: 2658-2663m
    Core photo at depth: 2663-2668m
    2643-2648m
    2648-2653m
    2653-2658m
    2658-2663m
    2663-2668m
    Core photo at depth: 2668-2670m
    Core photo at depth: 2670-2675m
    Core photo at depth: 2675-2679m
    Core photo at depth: 2680-2685m
    Core photo at depth: 2685-2690m
    2668-2670m
    2670-2675m
    2675-2679m
    2680-2685m
    2685-2690m
    Core photo at depth: 2690-2694m
    Core photo at depth: 2692-2697m
    Core photo at depth: 2697-2702m
    Core photo at depth: 2702-2707m
    Core photo at depth: 2707-2712m
    2690-2694m
    2692-2697m
    2697-2702m
    2702-2707m
    2707-2712m
    Core photo at depth: 2712-2717m
    Core photo at depth: 2717-2621m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    2712-2717m
    2717-2621m
  • Oil samples at the Norwegian Offshore Directorate

    Oil samples at the Norwegian Offshore Directorate
    Test type
    Bottle number
    Top depth
    MD [m]
    Bottom depth
    MD [m]
    Fluid type
    Test time
    Samples available
    DST
    DST1B
    2524.00
    2527.00
    OIL
    24.05.1986 - 20:30
    YES
  • 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
    465.0
    36
    471.0
    0.00
    LOT
    SURF.COND.
    20
    899.0
    26
    1002.0
    1.46
    LOT
    INTERM.
    13 3/8
    1821.0
    17 1/2
    2138.0
    1.83
    LOT
    INTERM.
    9 5/8
    2802.0
    12 1/4
    3240.0
    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
    2554
    2501
    15.9
    1.1
    2536
    2527
    15.9
    1.2
    2515
    2506
    15.9
    1.3
    2504
    2501
    15.9
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    35.000
    9.000
    33.000
    92
    1.1
    93
    1.2
    94
    1.3
    95
    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
    896
    79000
    0.839
    0.778
    88
    1.1
    1135
    109000
    0.835
    0.805
    96
    1.2
    893
    79000
    0.835
    0.795
    89
    1.3
    896
    79000
    0.838
    0.805
    88
  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CDL CNL GR
    2400
    3154
    CDL CNL GR FMT
    1819
    2717
    DIFL LS BHC CDL GR
    899
    1832
    DIFL LS BHC GR
    1819
    3154
    DIFL LS BHC GR FMT
    3120
    3238
    DIPLOG FMT
    1819
    3254
    DLL MLL GR
    1819
    2716
    MWD - GR
    466
    471
    MWD - GR RES
    466
    915
    MWD - GR RES DIR
    466
    3238
    VSP
    700
    3238
  • Lithostratigraphy

  • Geochemical information

    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.36
    pdf
    2.18
  • 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
    1.84
    pdf
    37.25
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    390
    1.03
    WATER BASED
    15.06.1986
    471
    1.03
    WATER BASED
    21.04.1986
    616
    1.10
    8.0
    22.1
    WATER BASED
    21.04.1986
    858
    1.15
    6.0
    21.6
    WATER BASED
    21.04.1986
    915
    1.16
    7.0
    26.9
    WATER BASED
    21.04.1986
    915
    1.03
    WATER BASED
    21.04.1986
    915
    1.20
    8.0
    27.8
    WATER BASED
    21.04.1986
    1002
    1.10
    12.0
    7.7
    WATER BASED
    21.04.1986
    1461
    1.20
    15.0
    10.1
    WATER BASED
    23.04.1986
    1498
    1.20
    16.0
    9.6
    WATER BASED
    23.04.1986
    1617
    1.30
    18.0
    10.1
    WATER BASED
    25.04.1986
    1709
    1.73
    20.0
    5.8
    WATER BASED
    15.06.1986
    1837
    1.41
    22.0
    9.1
    WATER BASED
    28.04.1986
    1837
    1.41
    22.0
    9.6
    WATER BASED
    28.04.1986
    1837
    1.41
    22.0
    8.7
    WATER BASED
    02.05.1986
    2138
    1.58
    25.0
    10.1
    WATER BASED
    02.05.1986
    2350
    1.65
    28.0
    8.7
    WATER BASED
    09.05.1986
    2430
    1.70
    29.0
    6.8
    WATER BASED
    05.05.1986
    2446
    1.73
    27.0
    6.8
    WATER BASED
    05.05.1986
    2446
    1.73
    28.0
    6.3
    WATER BASED
    12.05.1986
    2446
    1.73
    27.0
    6.8
    WATER BASED
    12.05.1986
    2446
    1.73
    18.0
    4.8
    WATER BASED
    24.05.1986
    2446
    1.73
    19.0
    5.3
    WATER BASED
    06.06.1986
    2446
    1.73
    27.0
    6.3
    WATER BASED
    09.05.1986
    2518
    1.73
    26.0
    8.2
    WATER BASED
    05.05.1986
    2546
    1.73
    26.0
    6.8
    WATER BASED
    05.05.1986
    2574
    1.73
    28.0
    6.3
    WATER BASED
    05.05.1986
    2603
    1.73
    25.0
    8.7
    WATER BASED
    05.05.1986
    2641
    1.73
    26.0
    6.8
    WATER BASED
    09.05.1986
    2670
    1.73
    25.0
    6.8
    WATER BASED
    09.05.1986
    2770
    1.73
    28.0
    6.3
    WATER BASED
    09.05.1986
    2802
    1.73
    19.0
    5.3
    WATER BASED
    06.06.1986
    2802
    1.73
    18.0
    4.8
    WATER BASED
    25.05.1986
    2802
    1.73
    18.0
    4.8
    WATER BASED
    06.06.1986
    2802
    1.73
    22.0
    7.2
    WATER BASED
    21.05.1986
    2802
    1.73
    20.0
    5.8
    WATER BASED
    15.06.1986
    2802
    1.73
    20.0
    5.8
    WATER BASED
    15.06.1986
    2802
    1.73
    20.0
    5.8
    WATER BASED
    15.06.1986
    2802
    1.73
    19.0
    4.8
    WATER BASED
    24.05.1986
    2802
    1.73
    19.0
    5.8
    WATER BASED
    06.06.1986
    2806
    1.73
    26.0
    7.2
    WATER BASED
    12.05.1986
    2813
    1.73
    20.0
    6.3
    WATER BASED
    21.05.1986
    2820
    1.73
    25.0
    6.3
    WATER BASED
    21.05.1986
    2937
    1.73
    26.0
    8.2
    WATER BASED
    20.05.1986
    3090
    1.73
    26.0
    7.7
    WATER BASED
    20.05.1986
    3156
    1.73
    23.0
    7.2
    WATER BASED
    20.05.1986
    3160
    1.73
    21.0
    7.2
    WATER BASED
    21.05.1986
    3240
    1.73
    24.0
    8.2
    WATER BASED
    21.05.1986
    3240
    1.73
    24.0
    7.7
    WATER BASED
    21.05.1986
  • Palynological slides at the Norwegian Offshore Directorate

    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1839.0
    [m]
    SWC
    R.R.I
    1863.0
    [m]
    SWC
    R.R.I
    1900.0
    [m]
    SWC
    R.R.I
    1930.0
    [m]
    SWC
    R.R.I
    1965.0
    [m]
    SWC
    R.R.I
    1996.0
    [m]
    SWC
    R.R.I
    2026.0
    [m]
    SWC
    R.R.I
    2058.0
    [m]
    SWC
    R.R.I
    2095.0
    [m]
    SWC
    R.R.I
    2146.0
    [m]
    SWC
    R.R.I
    2212.0
    [m]
    SWC
    R.R.I
    2245.0
    [m]
    SWC
    R.R.I
    2330.0
    [m]
    SWC
    R.R.I
    2380.0
    [m]
    SWC
    R.R.I