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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34/10-37 A

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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.
    34/10-37 A
    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.
    SUSPENDED
    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.
    34/10-37
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NOD4-84-06 & SP2030
    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.
    808-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,
    22.02.1995
    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.
    03.04.1995
    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.
    03.04.1997
    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.
    19.10.2006
    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
    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.
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    140.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2950.0
    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).
    2845.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    32.4
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    102
    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.
    NESS FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 8' 9.78'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 0' 55.81'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6778501.30
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    446979.26
    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.
    2530

  • Wellbore history
    General
    Well 34/10-37 was drilled in the Tampen Spur area, ca 8 km WNW of the Gullfaks Sør Field. The results from 34/10-37 indicated a more complex fault pattern at the crest of the structure than expected and it was decided to drill a sidetrack.
    The objective of the sidetrack, 34/10 - 37 A, was to investigate the presence of a low angle fault at the crest of the D-prospect, which could explain the missing sections of the Tarbert Formation in 34/10-37. The well was planned to penetrate the top of the Brent Group at a higher level than in 34/10-37 and terminate 50 m TVD below the oil-water contact in the Brent Group.
    Operations and results
    Appraisal well 34/10 - 37 A was kicked off through casing at 2049 m in well 34/10-37 on 22 February 1995 using the semi-submersible installation Deepsea Bergen. It was drilled to TD at 2950 m in the Middle Jurassic Ness Formation. No significant problems were reported from the operations. The well was drilled with KCl/PAC mud from kick-off to TD.
    In addition to the formations encountered in 34/10-37 the well encountered the Rødby Formation, the Mime Formation and the Draupne Formation. Well 34/10-37 A penetrated the top of the Brent Group 15 m deeper than prognosed, but higher than in 34/10-37. An almost complete sequence of the Tarbert Formation was found in this well. The Brent Group proved to be hydrocarbon bearing with an "oil down to" at 2622 m TVD MSL.
    Four conventional core were cut from 2664 m to 2741 m in the Tarbert and Ness Formations. No FMT samples were collected in the well.
    The well was suspended on 3 April 1995 as an oil appraisal
    Testing
    The well was tested over the interval 2667 to 2697 m, and flowed with a rate of 1950 Sm3/day oil and 645000 Sm3/day gas (GOR = 330 Sm3/Sm3). The bottom hole temperature measured during the test was 97.2 deg C. A total of 4235 Sm3 oil was transferred to the vessel Crystal Sea and shipped to Mongstad.

  • 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]
    2060.00
    2950.00

  • 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
    2664.0
    2684.1
    [m ]
    2
    2684.5
    2704.9
    [m ]
    3
    2705.5
    2717.3
    [m ]
    4
    2720.5
    2729.3
    [m ]
    5
    2731.0
    2740.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    70.8
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2664-2669m
    Core photo at depth: 2669-2674m
    Core photo at depth: 2674-2679m
    Core photo at depth: 2679-2684m
    Core photo at depth: 2684-2684m
    2664-2669m
    2669-2674m
    2674-2679m
    2679-2684m
    2684-2684m
    Core photo at depth: 2689-2694m
    Core photo at depth: 2694-2699m
    Core photo at depth: 2699-2704m
    Core photo at depth: 2704-2705m
    Core photo at depth: 2705-2710m
    2689-2694m
    2694-2699m
    2699-2704m
    2704-2705m
    2705-2710m
    Core photo at depth: 2710-2715m
    Core photo at depth: 2715-2717m
    Core photo at depth: 2720-2725m
    Core photo at depth: 2725-2729m
    Core photo at depth: 2731-2736m
    2710-2715m
    2715-2717m
    2720-2725m
    2725-2729m
    2731-2736m
    Core photo at depth: 2736-2741m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    2736-2741m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2510.0
    [m]
    DC
    GEOST
    2520.0
    [m]
    DC
    GEOST
    2530.0
    [m]
    DC
    GEOST
    2540.0
    [m]
    DC
    GEOST
    2550.0
    [m]
    DC
    GEOST
    2560.0
    [m]
    DC
    GEOST
    2593.0
    [m]
    SWC
    STATO
    2596.0
    [m]
    SWC
    STATO
    2602.0
    [m]
    DC
    GEOST
    2608.0
    [m]
    DC
    GEOST
    2614.0
    [m]
    DC
    GEOST
    2620.0
    [m]
    DC
    GEOST
    2626.0
    [m]
    DC
    GEOST
    2629.0
    [m]
    DC
    GEOST
    2635.0
    [m]
    DC
    GEOST
    2641.0
    [m]
    DC
    GEOST
    2647.0
    [m]
    DC
    GEOST
    2653.0
    [m]
    SWC
    STATO
    2657.0
    [m]
    SWC
    STATO
    2664.0
    [m]
    C
    GEOST
    2668.0
    [m]
    C
    GEOST
    2672.0
    [m]
    C
    GEOST
    2679.0
    [m]
    C
    GEOST
    2685.0
    [m]
    C
    GEOST
    2691.0
    [m]
    C
    GEOST
    2696.0
    [m]
    C
    GEOST
    2699.0
    [m]
    C
    GEOST
    2702.0
    [m]
    C
    GEOST
    2708.0
    [m]
    C
    GEOST
    2711.0
    [m]
    C
    GEOST
    2716.0
    [m]
    C
    GEOST
    2721.0
    [m]
    C
    GEOST
    2724.0
    [m]
    C
    GEOST
    2727.0
    [m]
    C
    GEOST
    2729.0
    [m]
    C
    GEOST
    2731.0
    [m]
    C
    GEOST
    2735.0
    [m]
    C
    GEOST
    2738.0
    [m]
    C
    GEOST
    2740.0
    [m]
    C
    GEOST
    2743.0
    [m]
    DC
    GEOST
    2747.0
    [m]
    SWC
    STATO
    2749.0
    [m]
    DC
    GEOST
    2755.0
    [m]
    DC
    GEOST
    2761.0
    [m]
    DC
    GEOST
    2767.0
    [m]
    DC
    GEOST
    2773.0
    [m]
    DC
    GEOST
    2779.0
    [m]
    DC
    GEOST
    2785.0
    [m]
    DC
    GEOST
    2793.0
    [m]
    SWC
    STATO
    2797.0
    [m]
    DC
    GEOST
    2803.0
    [m]
    DC
    GEOST
    2804.0
    [m]
    SWC
    STATO
    2809.0
    [m]
    DC
    GEOST
    2815.0
    [m]
    DC
    GEOST
    2817.0
    [m]
    SWC
    STATO
    2821.0
    [m]
    DC
    GEOST
    2827.0
    [m]
    DC
    GEOST
    2833.0
    [m]
    DC
    GEOST
    2835.0
    [m]
    SWC
    STATO
    2842.0
    [m]
    DC
    GEOST
    2849.0
    [m]
    SWC
    STATO
    2857.0
    [m]
    DC
    GEOST
    2862.0
    [m]
    SWC
    STATO
    2869.0
    [m]
    DC
    GEOST
    2875.0
    [m]
    DC
    GEOST
    2881.0
    [m]
    DC
    GEOST
    2887.0
    [m]
    DC
    GEOST
    2894.0
    [m]
    SWC
    STATO
    2899.0
    [m]
    DC
    GEOST
    2908.0
    [m]
    DC
    GEOST
    2914.0
    [m]
    DC
    GEOST
    2920.0
    [m]
    DC
    GEOST
    2929.0
    [m]
    DC
    GEOST
    2935.0
    [m]
    DC
    GEOST
    2941.0
    [m]
    DC
    GEOST
    2944.0
    [m]
    DC
    GEOST
    2950.0
    [m]
    DC
    GEOST
    2993.0
    [m]
    DC
    GEOST

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    5.16

  • 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
    33.54

  • Drill stem tests (DST)
    Drill stem tests (DST)
    Test number
    From depth MD
    [m]
    To depth MD
    [m]
    Choke size
    [mm]
    1.0
    2667
    2697
    20.0
    1.1
    2667
    0
    11.1
    1.2
    2667
    0
    0.0
    1.3
    2667
    0
    0.0
    1.4
    2667
    0
    11.1
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    8.500
    35.400
    97
    1.1
    1.2
    1.3
    1.4
    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
    1950
    645000
    0.820
    0.730
    330
    1.1
    500
    0.820
    0.720
    300
    1.2
    1969
    0.820
    0.730
    320
    1.3
    1969
    0.820
    0.730
    320
    1.4
    595
    309

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    DIPLOG GR
    2545
    2951
    DLL MLL DAC ZDL CN DSL
    2550
    2946
    FMT QDYNE GR
    2660
    2903
    MWD - RGD
    2052
    2950
    SWC GR
    2525
    2912
    VSP
    2215
    2882

  • 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
    OPEN HOLE
    2950.0
    8 1/2
    2950.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    2056
    1.62
    50.0
    WATER BASED
    2210
    1.57
    30.0
    WATER BASED
    2362
    1.57
    27.0
    WATER BASED
    2650
    1.57
    37.0
    WATER BASED
    2684
    1.57
    36.0
    WATER BASED
    2950
    1.57
    41.0
    WATER BASED

  • Pressure plots
    Pressure plots
    The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.
    Pressure plots
    Document name
    Document format
    Document size [MB]
    pdf
    0.21