Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
sodir.no    Norsk
sodir.no          Norsk
22.11.2024 - 09:09
Time of last synchronization with Norwegian Offshore Directorate's internal systems

2/11-7

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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.
    2/11-7
    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.
    2/11-7
    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.
    Norsk Hydro Produksjon AS
    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.
    513-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.
    144
    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,
    16.04.1986
    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.
    06.09.1986
    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.
    06.09.1988
    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.
    27.02.2004
    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
    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.
    SHOWS
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    72.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5042.0
    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).
    5039.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.9
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    178
    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 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.
    HAUGESUND FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 14' 6.09'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 37' 38.84'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6232552.87
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    538896.83
    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.
    902

  • Wellbore history
    General
    Well 2/11-7 was designed to test a Jurassic reservoir half way between the crest and the mapped closing contour of a fault controlled structure up dip from the Danish well Gert-1 in the same structure. The primary objective was the middle Jurassic sands, expected to come in at 4696 m. Seismic anomalies at 320, 350, and 445 m respectively. Prognosed TD was 5025 m.
    Operations and results
    Wildcat well 2/11-7 was spudded with Wi1h. Wi1helmsen semi-submersible installation Treasure Scout on 16 April 1986 and drilled to TD at 5042 m in Late Jurassic shales of the Haugesund Formation. The well was flow checked at 318 m and 445 m, without any indications of gas. The well was drilled with seawater and hi-vis pills down to 1016 m, with KCl mud from 1016 m to 3737 m, and with Lignosulfonate mud from 3737 m to TD. Due to high gas readings and subsequent problems with increased mud weight and lost circulation up to 14% oil was added to the mud at 3799 m. This mud was subsequently circulated out and displaced with new mud, but a level of 1% to 8% oil was recorded in the mud from 3799 m to TD. Due to high formation pressure and safety problems, drilling was terminated in Late Jurassic shales before having reached the target Middle Jurassic sand.
    Shows were reported from lowermost Chalk Group, limestones of the Cromer Knoll Group, and from Upper Jurassic Dolomite and sandstone stringers. No conventional cores were cut. Thirty sidewall cores were attempted from 3801,5 m to 3756 m whereof 10 were recovered. No fluid samples were taken. The well was permanently abandoned as a dry well with shows on 6 September 1986.
    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]
    1020.00
    5042.00

  • 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
    179.0
    36
    179.0
    0.00
    LOT
    SURF.COND.
    20
    1001.0
    26
    1016.0
    1.88
    LOT
    INTERM.
    13 3/8
    2695.0
    17 1/2
    2715.0
    1.99
    LOT
    INTERM.
    9 5/8
    3737.0
    12 1/4
    3811.0
    2.18
    LOT
    LINER
    7
    3960.0
    8 1/2
    3965.0
    0.00
    LOT
    LINER
    5
    5042.0
    6
    5042.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL
    3139
    3959
    CBL VDL
    3388
    3735
    CBL VDL
    3793
    4807
    CST GR
    2756
    3965
    DIL LSS GR SP
    1001
    2718
    DIL LSS GR SP
    3959
    4658
    DIL MSFL LSS GR SP
    4578
    5038
    DLL MSFL LSS GR SP
    2696
    3734
    DLL MSFL LSS GR SP
    3735
    3961
    LDL CNL GR CAL
    3500
    3965
    LDL CNL GR CAL
    3959
    4736
    LDL GR CAL
    1001
    2718
    MWD
    181
    1010
    RFT
    3768
    3957
    VSP
    700
    4945

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.72

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    4.01
    pdf
    2.62

  • 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
    16.80

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    104
    1.03
    WATER BASED
    08.09.1986
    152
    1.03
    WATER BASED
    04.09.1986
    152
    1.03
    WATER BASED
    05.09.1986
    179
    1.03
    WATER
    16.04.1986
    400
    1.10
    WATER
    17.04.1986
    966
    1.10
    WATER
    20.04.1986
    1016
    1.10
    WATER
    20.04.1986
    1016
    0.00
    WATER
    21.04.1986
    1050
    1.50
    WATER
    22.04.1986
    1346
    1.50
    WATER
    23.04.1986
    1526
    1.50
    WATER
    24.04.1986
    1753
    1.55
    31.0
    14.0
    WATER
    27.04.1986
    2034
    1.60
    36.0
    15.0
    WATER
    27.04.1986
    2205
    1.60
    37.0
    14.0
    WATER
    27.04.1986
    2505
    1.60
    38.0
    15.0
    WATER
    28.04.1986
    2588
    1.60
    30.0
    23.0
    WATER
    29.04.1986
    2700
    1.60
    21.0
    13.0
    WATER
    05.05.1986
    2715
    1.60
    31.0
    12.0
    WATER
    01.05.1986
    2715
    0.00
    30.0
    13.0
    WATER
    01.05.1986
    2715
    0.00
    22.0
    10.0
    WATER
    04.05.1986
    2715
    0.00
    22.0
    10.0
    WATER
    05.05.1986
    2715
    0.00
    21.0
    13.0
    WATER
    05.05.1986
    2800
    1.60
    17.0
    9.0
    WATER
    06.05.1986
    3000
    1.60
    28.0
    11.0
    WATER
    08.05.1986
    3086
    1.60
    26.0
    12.0
    WATER
    08.05.1986
    3126
    1.60
    30.0
    9.0
    WATER
    11.05.1986
    3223
    1.60
    25.0
    9.0
    WATER
    11.05.1986
    3308
    1.60
    24.0
    9.0
    WATER
    11.05.1986
    3390
    1.95
    31.0
    7.0
    WATER BASED
    30.06.1986
    3462
    1.60
    23.0
    10.0
    WATER
    12.05.1986
    3569
    1.60
    24.0
    11.0
    WATER
    13.05.1986
    3600
    1.91
    31.0
    7.0
    WATER BASED
    08.06.1986
    3601
    1.60
    23.0
    12.0
    WATER
    14.05.1986
    3640
    1.91
    38.0
    10.0
    WATER BASED
    04.06.1986
    3654
    1.60
    24.0
    11.0
    WATER
    15.05.1986
    3694
    1.65
    31.0
    14.0
    WATER
    19.05.1986
    3728
    1.65
    29.0
    12.0
    WATER
    19.05.1986
    3735
    1.95
    20.0
    4.0
    WATER BASED
    02.09.1986
    3735
    1.95
    21.0
    3.0
    WATER BASED
    02.09.1986
    3737
    1.93
    33.0
    5.0
    WATER BASED
    22.06.1986
    3737
    1.93
    32.0
    6.0
    WATER BASED
    26.06.1986
    3737
    1.93
    35.0
    6.0
    WATER BASED
    10.06.1986
    3737
    1.93
    32.0
    7.0
    WATER BASED
    11.06.1986
    3737
    1.93
    31.0
    6.0
    WATER BASED
    12.06.1986
    3737
    1.93
    33.0
    5.0
    WATER BASED
    15.06.1986
    3737
    1.93
    32.0
    7.0
    WATER BASED
    15.06.1986
    3737
    1.93
    32.0
    8.0
    WATER BASED
    15.06.1986
    3737
    1.93
    32.0
    5.0
    WATER BASED
    16.06.1986
    3737
    1.93
    31.0
    5.0
    WATER BASED
    17.06.1986
    3737
    1.93
    33.0
    5.0
    WATER BASED
    18.06.1986
    3737
    1.93
    32.0
    5.0
    WATER BASED
    19.06.1986
    3737
    1.93
    30.0
    7.0
    WATER BASED
    22.06.1986
    3737
    1.93
    31.0
    6.0
    WATER BASED
    22.06.1986
    3737
    1.93
    30.0
    6.0
    WATER BASED
    23.06.1986
    3737
    1.93
    30.0
    6.0
    WATER BASED
    24.06.1986
    3737
    1.93
    29.0
    6.0
    WATER BASED
    25.06.1986
    3737
    1.65
    28.0
    11.0
    WATER
    19.05.1986
    3741
    1.90
    35.0
    6.0
    WATER BASED
    01.06.1986
    3741
    1.90
    38.0
    5.0
    WATER BASED
    01.06.1986
    3746
    1.91
    36.0
    7.0
    WATER BASED
    02.06.1986
    3750
    1.92
    35.0
    8.0
    WATER BASED
    08.06.1986
    3750
    1.93
    35.0
    8.0
    WATER BASED
    09.06.1986
    3750
    1.93
    39.0
    9.0
    WATER BASED
    08.06.1986
    3766
    1.91
    38.0
    11.0
    WATER BASED
    05.06.1986
    3766
    1.65
    32.0
    13.0
    WATER
    19.05.1986
    3799
    1.78
    36.0
    12.0
    WATER BASED
    20.05.1986
    3807
    1.90
    38.0
    15.0
    WATER BASED
    21.05.1986
    3811
    1.88
    36.0
    12.0
    WATER BASED
    24.05.1986
    3811
    1.88
    37.0
    11.0
    WATER BASED
    26.05.1986
    3811
    1.90
    38.0
    11.0
    WATER BASED
    26.05.1986
    3811
    1.91
    40.0
    5.0
    WATER BASED
    27.05.1986
    3811
    1.91
    39.0
    5.0
    WATER BASED
    27.05.1986
    3811
    1.91
    34.0
    6.0
    WATER BASED
    29.05.1986
    3811
    1.90
    37.0
    8.0
    WATER BASED
    01.06.1986
    3811
    1.91
    41.0
    11.0
    WATER BASED
    03.06.1986
    3811
    1.88
    42.0
    7.0
    WATER BASED
    26.05.1986
    3811
    1.91
    36.0
    6.0
    WATER BASED
    28.05.1986
    3816
    1.95
    32.0
    6.0
    WATER BASED
    30.06.1986
    3848
    2.02
    44.0
    9.0
    WATER BASED
    30.06.1986
    3904
    2.05
    48.0
    9.0
    WATER BASED
    30.06.1986
    3956
    2.07
    46.0
    8.0
    WATER BASED
    01.07.1986
    3956
    2.10
    38.0
    7.0
    WATER BASED
    03.07.1986
    3965
    2.10
    36.0
    7.0
    WATER BASED
    07.07.1986
    3965
    2.10
    28.0
    6.0
    WATER BASED
    07.07.1986
    3965
    2.10
    24.0
    6.0
    WATER BASED
    07.07.1986
    3965
    2.10
    25.0
    6.0
    WATER BASED
    08.07.1986
    3965
    2.10
    24.0
    7.0
    WATER BASED
    09.07.1986
    3965
    2.10
    25.0
    6.0
    WATER BASED
    10.07.1986
    3965
    2.10
    24.0
    6.0
    WATER BASED
    11.07.1986
    3965
    2.10
    30.0
    6.0
    WATER BASED
    14.07.1986
    3965
    2.10
    25.0
    6.0
    WATER BASED
    14.07.1986
    3965
    2.10
    24.0
    6.0
    WATER BASED
    14.07.1986
    3965
    2.10
    26.0
    6.0
    WATER BASED
    15.07.1986
    3965
    2.10
    39.0
    7.0
    WATER BASED
    02.07.1986
    3965
    2.10
    21.0
    6.0
    WATER BASED
    16.07.1986
    3968
    2.14
    22.0
    4.0
    WATER BASED
    17.07.1986
    3968
    2.14
    23.0
    4.0
    WATER BASED
    18.07.1986
    3980
    2.12
    21.0
    3.0
    WATER BASED
    21.07.1986
    3983
    2.12
    21.0
    3.0
    WATER BASED
    21.07.1986
    4006
    2.09
    20.0
    3.0
    WATER BASED
    21.07.1986
    4062
    2.09
    25.0
    5.0
    WATER BASED
    23.07.1986
    4088
    2.09
    41.0
    7.0
    WATER BASED
    24.07.1986
    4088
    2.09
    40.0
    8.0
    WATER BASED
    25.07.1986
    4088
    2.09
    30.0
    5.0
    WATER BASED
    28.07.1986
    4088
    2.09
    34.0
    7.0
    WATER BASED
    23.07.1986
    4088
    2.09
    36.0
    7.0
    WATER BASED
    28.07.1986
    4088
    2.09
    34.0
    5.0
    WATER BASED
    28.07.1986
    4088
    2.09
    30.0
    5.0
    WATER BASED
    29.07.1986
    4088
    2.09
    26.0
    5.0
    WATER BASED
    30.07.1986
    4091
    2.09
    29.0
    3.0
    WATER BASED
    31.07.1986
    4133
    2.09
    26.0
    3.0
    WATER BASED
    01.08.1986
    4234
    2.09
    25.0
    4.0
    WATER BASED
    04.08.1986
    4304
    2.09
    27.0
    4.0
    WATER BASED
    04.08.1986
    4397
    2.10
    26.0
    4.0
    WATER BASED
    04.08.1986
    4484
    2.12
    29.0
    4.0
    WATER BASED
    05.08.1986
    4567
    2.12
    29.0
    4.0
    WATER BASED
    06.08.1986
    4623
    2.12
    29.0
    4.0
    WATER BASED
    07.08.1986
    4647
    2.12
    29.0
    4.0
    WATER BASED
    08.08.1986
    4660
    2.12
    29.0
    4.0
    WATER BASED
    10.08.1986
    4660
    2.10
    29.0
    5.0
    WATER BASED
    10.08.1986
    4744
    2.10
    28.0
    5.0
    WATER BASED
    10.08.1986
    4828
    2.10
    29.0
    5.0
    WATER BASED
    11.08.1986
    4897
    2.11
    30.0
    5.0
    WATER BASED
    13.08.1986
    4951
    2.12
    34.0
    5.0
    WATER BASED
    13.08.1986
    5011
    2.12
    29.0
    4.0
    WATER BASED
    14.08.1986
    5042
    2.13
    31.0
    5.0
    WATER BASED
    17.08.1986
    5042
    2.13
    26.0
    4.0
    WATER BASED
    17.08.1986
    5042
    2.13
    24.0
    4.0
    WATER BASED
    17.08.1986
    5042
    2.13
    27.0
    5.0
    WATER BASED
    18.08.1986
    5042
    2.13
    27.0
    4.0
    WATER BASED
    20.08.1986
    5042
    2.13
    29.0
    5.0
    WATER BASED
    21.08.1986
    5042
    2.13
    27.0
    4.0
    WATER BASED
    24.08.1986
    5042
    2.13
    33.0
    6.0
    WATER BASED
    24.08.1986
    5042
    2.14
    28.0
    7.0
    WATER BASED
    25.08.1986
    5042
    2.14
    26.0
    6.0
    WATER BASED
    26.08.1986
    5042
    2.14
    29.0
    6.0
    WATER BASED
    28.08.1986
    5042
    2.14
    24.0
    5.0
    WATER BASED
    29.08.1986
    5042
    2.14
    26.0
    5.0
    WATER BASED
    02.09.1986
    5042
    2.13
    26.0
    5.0
    WATER BASED
    19.08.1986
    5042
    2.13
    27.0
    5.0
    WATER BASED
    24.08.1986