Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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16.07.2024 - 01:28
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2/1-7

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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.
    2/1-7
    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
    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.
    2/1-7
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    80 - 30A SP. 1630
    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.
    BP Petroleum Dev. of Norway 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.
    431-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.
    182
    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,
    06.09.1984
    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.
    06.03.1985
    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.
    06.03.1987
    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.
    15.02.2006
    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.
    WILDCAT
    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.
    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.
    38.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    69.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    5464.0
    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).
    5464.0
    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.
    EARLY PERMIAN
    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.
    ROTLIEGEND GP
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 51' 51.32'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 5' 40.36'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6302420.54
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    505764.55
    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.
    137
  • Wellbore history

    General
    Wildcat well 2/1-7 was drilled on a structure in the centre of the block. The primary target was Rothliegendes sandstone in a large fault bounded structure mapped at base Zechstein Group level. A secondary objective was Late Jurassic Ula Formation sandstone in an extension of the 2/1-3 Gyda discovery. In the 2/1-3 well two sequences of Ula Formation sandstone had been encountered, and the upper of the two had been oil-bearing
    Operations and results
    Wildcat well 2/1-7 was spudded with the 3-leg jack installation Glomar Moray Firth 1 on 6 September 1984 and drilled to TD at 5464 m in the Permian Rotliegendes Group. Pumping lost circulation material, without changing the mud weight, stopped loss of mud at 1710 m. Top chalk came in at 3190 m. This whole sequence was drilled with turbine. At 3746 m the drill string got stuck, and the tight interval was located between 2600-2900 m. The string was freed by circulating acidic mud. Full circulation was maintained during this whole operation. While pulling out to change bit at 5077 m the drill string was lost in the hole. At the same time 170 bbls of mud was lost. One reason for this mud loss could be the "piston effect" caused by the drill string falling down the hole. The pipe was fished out piece by piece, and the stabilisers above the bit were milled out. At 5081 m the drill string was screwed off 300 m above the bit. Fishing was successful and drilling continued. Drilling was stopped at 5113 a to perform pressure test. During this operation, before reliable results were obtained, the RFT-tool got stuck in the hole. After extensive fishing the operator decided to plug back and sidetrack the hole. The technical sidetrack was kicked off at 5092 m, and drilled to 5119 m. Problems at this depth made another sidetrack necessary, and the hole was plugged back to 4747 m. The new sidetrack was kicked off from 5080 m and dri1led to a TD of 5464 m, which made this hole 4 m short of being the deepest hole so far drilled in the Norwegian Sector. The well was drilled water based with KCl/polymer mud below 760 m, converting to a salt saturated mud from 4340 m. At 4238 m a diesel pill was used in the mud to free stuck pipe.
    The upper Ula sand, found oil bearing in the 2/1-3 well, was absent in the well. This confirmed the seismic mapping which picked the sub crop of the "2/1-3 Sand" beneath the base Mandal Formation to the north of the 2/1-7 well location. A 37 m thick Ula Formation water bearing sandstone was penetrated further down in the Late Jurassic, at 4024 m. The primary objective, Rotliegendes sand in the bottom of the well, showed good reservoir qualities, but was also water bearing. There were no significant hydrocarbon shows in any section of the well. The well severely downgraded the prospectivity of the Rotliegendes sandstone, and was thought to be dry due to absence of Carboniferous source rocks. Four cores were cut in the Rotliegendes sandstone, three of which cover the interval 5115.05 - 5127.0 m, and one between 5147.0 - 5165.0 m. No wire line fluid samples were obtained in the well.
    The well was permanently abandoned on 6 March 1985 as a dry well.
    Testing
    No drill stem test was performed in the well.
  • 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]
    300.00
    5465.00
  • 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
    5115.1
    5124.3
    [m ]
    2
    5124.3
    5125.5
    [m ]
    3
    5125.5
    5127.0
    [m ]
    4
    5147.0
    5165.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    30.0
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES
  • Core photos

    Core photos
    Core photo at depth: 5115-5121m
    Core photo at depth: 5121-5124m
    Core photo at depth: 5124-5125m
    Core photo at depth: 5125-5127m
    Core photo at depth: 5147-5153m
    5115-5121m
    5121-5124m
    5124-5125m
    5125-5127m
    5147-5153m
    Core photo at depth: 5153-5159m
    Core photo at depth: 5159-5165m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    5153-5159m
    5159-5165m
  • Palynological slides at the Norwegian Offshore Directorate

    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3870.0
    [m]
    DC
    OD
    3890.0
    [m]
    DC
    OD
    3910.0
    [m]
    DC
    OD
    3931.0
    [m]
    DC
    OD
    3949.0
    [m]
    DC
    OD
    3967.0
    [m]
    DC
    OD
    3985.0
    [m]
    DC
    OD
    4021.0
    [m]
    DC
    OD
    4039.0
    [m]
    DC
    OD
    4057.0
    [m]
    DC
    OD
  • Lithostratigraphy

  • Composite logs

    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.71
  • 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
    2.44
    pdf
    2.75
  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    BHC MSFL GR SP CAL
    3876
    4930
    CBL VDL GR CCL
    450
    1000
    CYBERDIP
    3876
    4293
    CYBERLOOK
    5083
    5187
    DLL GR SP
    5083
    5189
    DLL MSFL NGT SP
    3876
    5078
    ISF SLS GR SP
    170
    2462
    ISF SLS MSFL GR CAL SP
    5083
    5193
    ISF SLS MSFL GR SP CAL
    2473
    3879
    ISF SLS MSFL GR SP CAL
    3876
    4291
    LDL CNL GR
    5082
    5194
    LDL CNL NGT
    3876
    5071
    RFT GR
    5076
    5103
    RFT GR
    5110
    5187
    RFT GR
    5115
    5145
    SHDT GR
    3876
    4293
    VSP GR
    150
    5185
  • 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
    171.0
    36
    171.0
    0.00
    LOT
    SURF.COND.
    20
    745.0
    26
    755.0
    1.70
    LOT
    INTERM.
    13 3/8
    2473.0
    17 1/2
    2490.0
    1.92
    LOT
    INTERM.
    9 5/8
    3873.0
    12 1/4
    3878.0
    2.12
    LOT
    LINER
    7
    5076.0
    8 1/2
    5464.0
    2.20
    LOT
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    151
    1.03
    WATER BASED
    11.09.1984
    186
    1.03
    WATER BASED
    11.09.1984
    202
    1.03
    WATER BASED
    11.09.1984
    220
    1.06
    WATER BASED
    13.09.1984
    521
    1.08
    4.0
    3.8
    WATER BASED
    14.09.1984
    745
    1.15
    20.0
    14.9
    WATER BASED
    18.09.1984
    745
    1.15
    10.0
    5.8
    WATER BASED
    16.09.1984
    745
    1.15
    20.0
    14.9
    WATER BASED
    18.09.1984
    755
    1.12
    5.0
    3.8
    WATER BASED
    16.09.1984
    755
    1.13
    10.0
    5.8
    WATER BASED
    16.09.1984
    755
    1.13
    10.0
    5.8
    WATER BASED
    16.09.1984
    937
    1.15
    14.0
    5.8
    WATER BASED
    19.09.1984
    1170
    1.21
    14.0
    6.7
    WATER BASED
    20.09.1984
    1397
    1.38
    14.0
    5.8
    WATER BASED
    23.09.1984
    1684
    1.45
    16.0
    6.7
    WATER BASED
    23.09.1984
    1739
    1.45
    23.0
    8.2
    WATER BASED
    25.09.1984
    1840
    1.48
    26.0
    8.6
    WATER BASED
    25.09.1984
    2136
    1.50
    32.0
    9.6
    WATER BASED
    26.09.1984
    2277
    1.55
    30.0
    8.2
    WATER BASED
    27.09.1984
    2316
    1.55
    33.0
    6.2
    WATER BASED
    29.09.1984
    2448
    1.55
    30.0
    8.2
    WATER BASED
    29.09.1984
    2490
    1.55
    29.0
    8.6
    WATER BASED
    29.09.1984
    2500
    1.56
    24.0
    7.2
    WATER BASED
    07.10.1984
    2683
    1.57
    23.0
    7.2
    WATER BASED
    08.10.1984
    2899
    1.58
    20.0
    6.7
    WATER BASED
    09.10.1984
    2958
    1.57
    19.0
    5.8
    WATER BASED
    10.10.1984
    3066
    1.58
    17.0
    13.4
    WATER BASED
    11.10.1984
    3123
    1.58
    17.0
    12.5
    WATER BASED
    14.10.1984
    3127
    1.58
    18.0
    6.7
    WATER BASED
    14.10.1984
    3178
    1.58
    24.0
    8.2
    WATER BASED
    14.10.1984
    3228
    1.58
    25.0
    8.6
    WATER BASED
    15.10.1984
    3249
    1.58
    20.0
    7.7
    WATER BASED
    16.10.1984
    3274
    1.59
    24.0
    10.1
    WATER BASED
    17.10.1984
    3301
    1.59
    23.0
    8.6
    WATER BASED
    18.10.1984
    3361
    1.58
    30.0
    12.0
    WATER BASED
    21.10.1984
    3416
    1.58
    28.0
    11.0
    WATER BASED
    21.10.1984
    3497
    1.58
    28.0
    6.7
    WATER BASED
    22.10.1984
    3562
    1.58
    31.0
    7.7
    WATER BASED
    24.10.1984
    3612
    1.58
    32.0
    8.2
    WATER BASED
    25.10.1984
    3663
    1.58
    31.0
    8.6
    WATER BASED
    29.10.1984
    3702
    1.60
    31.0
    8.2
    WATER BASED
    29.10.1984
    3732
    1.60
    34.0
    8.6
    WATER BASED
    29.10.1984
    3746
    1.60
    34.0
    8.6
    WATER BASED
    31.10.1984
    3747
    1.58
    34.0
    8.6
    WATER BASED
    06.11.1984
    3757
    1.58
    34.0
    9.1
    WATER BASED
    08.11.1984
    3776
    1.58
    33.0
    10.2
    WATER BASED
    09.11.1984
    3858
    1.62
    36.0
    13.4
    WATER BASED
    12.11.1984
    3878
    1.65
    37.0
    14.4
    WATER BASED
    12.11.1984
    3904
    1.80
    30.0
    9.6
    WATER BASED
    19.11.1984
    3919
    1.85
    30.0
    9.6
    WATER BASED
    19.11.1984
    3968
    1.86
    33.0
    11.5
    WATER BASED
    20.11.1984
    4024
    1.85
    34.0
    11.0
    WATER BASED
    21.11.1984
    4148
    1.85
    35.0
    10.1
    WATER BASED
    22.11.1984
    4236
    1.85
    31.0
    9.6
    WATER BASED
    23.11.1984
    4290
    1.86
    32.0
    11.5
    WATER BASED
    26.11.1984
    4333
    1.84
    47.0
    10.6
    WATER BASED
    26.11.1984
    4530
    1.84
    51.0
    13.4
    WATER BASED
    27.11.1984
    4677
    1.90
    57.0
    13.0
    WATER BASED
    28.11.1984
    4870
    1.94
    62.0
    13.0
    WATER BASED
    29.11.1984
    4970
    1.94
    56.0
    10.2
    WATER BASED
    30.11.1984
    5066
    1.96
    70.0
    17.3
    WATER BASED
    03.12.1984
    5077
    1.96
    70.0
    12.5
    WATER BASED
    03.12.1984
    5077
    1.90
    50.0
    10.6
    WATER BASED
    20.12.1984
    5077
    1.90
    50.0
    10.6
    WATER BASED
    20.12.1984
    5080
    1.93
    52.0
    10.1
    WATER BASED
    29.01.1985
    5081
    1.92
    61.0
    16.3
    WATER BASED
    03.01.1985
    5081
    1.92
    56.0
    13.4
    WATER BASED
    03.01.1985
    5081
    1.92
    61.0
    16.3
    WATER BASED
    03.01.1985
    5083
    1.92
    54.0
    14.4
    WATER BASED
    25.12.1984
    5089
    1.93
    47.0
    12.0
    WATER BASED
    10.01.1985
    5089
    1.93
    44.0
    10.6
    WATER BASED
    14.01.1985
    5089
    1.93
    54.0
    12.0
    WATER BASED
    10.01.1985
    5089
    1.93
    47.0
    12.0
    WATER BASED
    10.01.1985
    5089
    1.93
    44.0
    10.6
    WATER BASED
    14.01.1985
    5092
    1.92
    35.0
    6.2
    WATER BASED
    31.01.1985
    5092
    1.92
    34.0
    6.2
    WATER BASED
    03.02.1985
    5092
    1.92
    34.0
    6.2
    WATER BASED
    03.02.1985
    5096
    1.92
    52.0
    8.6
    WATER BASED
    03.02.1985
    5110
    1.92
    49.0
    9.1
    WATER BASED
    29.01.1985
    5113
    1.92
    66.0
    10.6
    WATER BASED
    14.01.1985
    5113
    1.92
    47.0
    6.7
    WATER BASED
    03.02.1985
    5113
    1.92
    39.0
    5.8
    WATER BASED
    21.01.1985
    5113
    1.92
    66.0
    10.6
    WATER BASED
    14.01.1985
    5113
    1.92
    39.0
    5.8
    WATER BASED
    21.01.1985
    5113
    1.92
    51.0
    10.6
    WATER BASED
    14.01.1985
    5115
    1.92
    50.0
    7.2
    WATER BASED
    05.02.1985
    5124
    1.92
    101.0
    22.0
    WATER BASED
    06.02.1985
    5126
    1.92
    77.0
    13.0
    WATER BASED
    07.02.1985
    5127
    1.92
    40.0
    8.2
    WATER BASED
    10.02.1985
    5147
    1.92
    30.0
    3.8
    WATER BASED
    10.02.1985
    5165
    1.92
    28.0
    1.4
    WATER BASED
    13.02.1985
    5165
    1.92
    28.0
    1.4
    WATER BASED
    11.02.1985
    5165
    1.92
    28.0
    1.4
    WATER BASED
    13.02.1985
    5185
    1.72
    29.0
    3.4
    WATER BASED
    14.02.1985
    5379
    1.72
    29.0
    3.4
    WATER BASED
    17.02.1985
    5431
    1.72
    29.0
    3.4
    WATER BASED
    17.02.1985
    5460
    1.71
    34.0
    3.8
    WATER BASED
    17.02.1985
    5465
    1.70
    34.0
    5.8
    WATER BASED
    18.02.1985
  • Thin sections at the Norwegian Offshore Directorate

    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    5115.05
    [m ]
    5116.35
    [m ]
    5116.65
    [m ]
    5119.35
    [m ]
    5122.35
    [m ]
    5125.00
    [m ]
    5125.35
    [m ]
    5126.35
    [m ]
    5148.65
    [m ]
    5156.35
    [m ]
    5164.65
    [m ]
  • 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