Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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09.05.2024 - 01:35
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7229/11-1

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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.
    7229/11-1
    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.
    BARENTS SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    7229/11-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    SH 9102-INLINE 539 & CROSSLINE 525
    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.
    A/S Norske Shell
    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.
    767-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.
    129
    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,
    09.08.1993
    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.
    15.12.1993
    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.
    15.12.1995
    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.
    11.04.2003
    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.
    24.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    284.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4630.0
    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).
    4627.7
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    4.05
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    140
    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 CARBONIFEROUS
    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.
    ØRN FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    72° 12' 57.24'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    29° 38' 29.75'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    8015210.03
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    590031.99
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    35
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    1643

  • Wellbore history
    General
    Well 7229/11-1 was the first well drilled in Production Licence 183 following the interpretation of a 3D seismic survey acquired in 1991. The well is situated on the northeastern part of the Finnmark Platform. The target of the well was the "Castor" prospect, consisting of two Permian-Carboniferous (Sakmarian to Asselian age) carbonate build-ups confined in combined dip-closed and stratigraphic traps. The objectives were to test the hydrocarbon potential of the carbonate build-ups, referred to as Carbonate 1 and Carbonate 2 respectively, to acquire additional information on the Permian-Carboniferous of the Finnmark Platform, and to calibrate the seismic expression of the build-ups.
    Operations and results
    Exploration well was spudded with the semi-submersible installation "Ross Rig" on 9 August 1993 and drilled to a total depth of 4630 m in limestone of Middle - Lower? Carboniferous age. The well was drilled with sea water and hi-vis pre-hydrated bentonite pills down to 1098 m, with KCl / polymer mud from 1098 m to 3012 m, and with a high-temperature KCl / Polymer mud from 3012 m to TD. The soft seabed did not present anchoring problems. No shallow gas was encountered. Drilling problems were experienced in the interval 339 m & 379 m. A seismic marker (black loop) corresponds to the top of this interval, which is interpreted as a boulder rich sequence. Drilling problems could have been due to boulders to fall into the hole and become wedged, thus causing sticking. The predicted carbonate build-up targets were encountered but were not reservoir facies. Carbonate 1 was confirmed to be build-up / build-up flank facies; Carbonate 2 was found to be carbonate platform facies. No hydrocarbon shows were encountered in the well. Nine cores totalling 180.9 metres length were successfully cut and retrieved from the Permian-Carboniferous. No hydrocarbon shows were encountered in the well. The well was plugged and abandoned as a dry hole on 15 December 1993.
    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]
    1100.00
    4629.00

  • 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
    4088.0
    4096.0
    [m ]
    2
    4097.5
    4104.5
    [m ]
    3
    4130.5
    4158.3
    [m ]
    4
    4158.5
    4182.7
    [m ]
    5
    4183.0
    4211.6
    [m ]
    6
    4211.7
    4240.0
    [m ]
    7
    4240.3
    4268.8
    [m ]
    8
    4269.0
    4276.0
    [m ]
    9
    4373.0
    4394.1
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    180.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 4088-4092m
    Core photo at depth: 4092-4096m
    Core photo at depth: 4097-4101m
    Core photo at depth: 4101-4104m
    Core photo at depth: 4131-4134m
    4088-4092m
    4092-4096m
    4097-4101m
    4101-4104m
    4131-4134m
    Core photo at depth: 4134-4138m
    Core photo at depth: 4138-4142m
    Core photo at depth: 4142-4146m
    Core photo at depth: 4146-4150m
    Core photo at depth: 4150-4154m
    4134-4138m
    4138-4142m
    4142-4146m
    4146-4150m
    4150-4154m
    Core photo at depth: 4154-4158m
    Core photo at depth: 4158-4159m
    Core photo at depth: 4158-4162m
    Core photo at depth: 4162-4166m
    Core photo at depth: 4166-4170m
    4154-4158m
    4158-4159m
    4158-4162m
    4162-4166m
    4166-4170m
    Core photo at depth: 4170-4174m
    Core photo at depth: 4174-4178m
    Core photo at depth: 4178-4182m
    Core photo at depth: 4182-4183m
    Core photo at depth: 4183-4187m
    4170-4174m
    4174-4178m
    4178-4182m
    4182-4183m
    4183-4187m
    Core photo at depth: 4187-4191m
    Core photo at depth: 4191-4195m
    Core photo at depth: 4191-4195m
    Core photo at depth: 4195-4199m
    Core photo at depth: 4199-4203m
    4187-4191m
    4191-4195m
    4191-4195m
    4195-4199m
    4199-4203m
    Core photo at depth: 4203-4207m
    Core photo at depth: 4207-4211m
    Core photo at depth: 4211-4212m
    Core photo at depth: 4212-4215m
    Core photo at depth: 4215-4219m
    4203-4207m
    4207-4211m
    4211-4212m
    4212-4215m
    4215-4219m
    Core photo at depth: 4219-4223m
    Core photo at depth: 4223-4227m
    Core photo at depth: 4227-4231m
    Core photo at depth: 4231-4235m
    Core photo at depth: 4235-4239m
    4219-4223m
    4223-4227m
    4227-4231m
    4231-4235m
    4235-4239m
    Core photo at depth: 4239-4240m
    Core photo at depth: 4240-4244m
    Core photo at depth: 4244-4248m
    Core photo at depth: 4248-4252m
    Core photo at depth: 4252-4256m
    4239-4240m
    4240-4244m
    4244-4248m
    4248-4252m
    4252-4256m
    Core photo at depth: 4256-4260m
    Core photo at depth: 4260-4264m
    Core photo at depth: 4264-4268m
    Core photo at depth: 4268-4269m
    Core photo at depth: 4269-4273m
    4256-4260m
    4260-4264m
    4264-4268m
    4268-4269m
    4269-4273m
    Core photo at depth: 4273-4276m
    Core photo at depth: 4373-4377m
    Core photo at depth: 4377-4381m
    Core photo at depth: 4381-4385m
    Core photo at depth: 4385-4389m
    4273-4276m
    4373-4377m
    4377-4381m
    4381-4385m
    4385-4389m
    Core photo at depth: 4389-4393m
    Core photo at depth: 4393-4394m
    Core photo at depth:  
    Core photo at depth:  
    Core photo at depth:  
    4389-4393m
    4393-4394m

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.78

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.72
    pdf
    1.39

  • 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
    4.51
    pdf
    49.03

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST
    1186
    2989
    CST GR
    3048
    3898
    DLL MSFL AS CNL LDL SP GR
    1085
    3012
    DLL MSFL BHC CNL LDL SP GR
    3002
    4332
    DLL MSFL BHC CNL LDL SP NGT GR
    4200
    4640
    FMI GR
    3950
    4335
    FMI GR
    4250
    4640
    LWD - CDR CDN AC CAL
    3950
    4278
    MSCT GR
    3890
    4586
    MSCT GR
    3909
    4613
    MWD - CDR CDN
    308
    1098
    MWD - GR SN
    1085
    4336
    MWD - GR SN
    4336
    4630
    RFT
    1879
    1882
    VSP
    905
    4630

  • 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
    380.0
    36
    380.0
    0.00
    LOT
    SURF.COND.
    20
    1085.0
    26
    1085.0
    0.00
    LOT
    INTERM.
    14
    3000.0
    17 1/2
    3000.0
    0.00
    LOT
    OPEN HOLE
    4630.0
    12 1/4
    4630.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    340
    1.25
    42.0
    WATER BASED
    920
    1.28
    42.0
    WATER BASED
    1045
    1.28
    52.0
    WATER BASED
    1098
    1.18
    75.0
    WATER BASED
    1168
    1.18
    55.0
    WATER BASED
    1470
    1.18
    51.0
    WATER BASED
    1522
    1.21
    48.0
    WATER BASED
    1610
    1.18
    47.0
    WATER BASED
    1762
    1.18
    47.0
    WATER BASED
    1844
    1.22
    43.0
    WATER BASED
    1920
    1.18
    46.0
    WATER BASED
    1940
    1.21
    45.0
    WATER BASED
    2057
    1.21
    46.0
    WATER BASED
    2176
    1.21
    48.0
    WATER BASED
    2255
    1.21
    53.0
    WATER BASED
    2300
    1.27
    67.0
    WATER BASED
    2317
    1.21
    57.0
    WATER BASED
    2327
    1.21
    54.0
    WATER BASED
    2500
    1.21
    48.0
    WATER BASED
    2641
    1.20
    46.0
    WATER BASED
    2711
    1.21
    46.0
    WATER BASED
    2750
    1.21
    45.0
    WATER BASED
    2761
    1.21
    45.0
    WATER BASED
    2780
    1.21
    45.0
    WATER BASED
    2802
    1.21
    45.0
    WATER BASED
    2830
    1.35
    65.0
    WATER BASED
    2844
    1.21
    46.0
    WATER BASED
    2850
    1.36
    67.0
    WATER BASED
    2854
    1.21
    45.0
    WATER BASED
    2859
    1.21
    48.0
    WATER BASED
    2939
    1.21
    48.0
    WATER BASED
    2980
    1.34
    56.0
    WATER BASED
    3004
    1.21
    48.0
    WATER BASED
    3012
    1.21
    50.0
    WATER BASED
    3086
    1.20
    53.0
    WATER BASED
    3151
    1.21
    54.0
    WATER BASED
    3183
    1.21
    54.0
    WATER BASED
    3254
    1.21
    53.0
    WATER BASED
    3271
    1.21
    51.0
    WATER BASED
    3302
    1.21
    48.0
    WATER BASED
    3355
    1.21
    48.0
    WATER BASED
    3417
    1.21
    46.0
    WATER BASED
    3456
    1.21
    49.0
    WATER BASED
    3506
    1.21
    47.0
    WATER BASED
    3646
    1.21
    44.0
    WATER BASED
    3700
    1.21
    46.0
    WATER BASED
    3742
    1.21
    45.0
    WATER BASED
    3798
    1.21
    45.0
    WATER BASED
    3811
    1.21
    43.0
    WATER BASED
    3818
    1.21
    45.0
    WATER BASED
    3820
    1.21
    45.0
    WATER BASED
    3906
    1.23
    44.0
    WATER BASED
    3922
    1.23
    45.0
    WATER BASED
    3942
    1.23
    45.0
    WATER BASED
    3957
    1.24
    446.0
    WATER BASED
    3984
    1.23
    50.0
    WATER BASED
    4088
    1.23
    45.0
    WATER BASED
    4097
    1.23
    46.0
    WATER BASED
    4125
    1.23
    48.0
    WATER BASED
    4130
    1.23
    44.0
    WATER BASED
    4158
    1.23
    43.0
    WATER BASED
    4183
    1.23
    49.0
    WATER BASED
    4211
    1.23
    46.0
    WATER BASED
    4240
    1.23
    48.0
    WATER BASED
    4268
    1.23
    45.0
    WATER BASED
    4275
    1.23
    47.0
    WATER BASED
    4278
    1.23
    45.0
    WATER BASED
    4279
    1.23
    48.0
    WATER BASED
    4307
    1.23
    48.0
    WATER BASED
    4345
    1.24
    44.0
    WATER BASED
    4366
    1.33
    47.0
    WATER BASED
    4373
    1.33
    46.0
    WATER BASED
    4422
    1.33
    47.0
    WATER BASED
    4559
    1.33
    49.0
    WATER BASED
    4612
    1.34
    54.0
    WATER BASED
    4630
    1.34
    57.0
    WATER BASED

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    4380.02
    [m ]
    4377.02
    [m ]
    4374.02
    [m ]
    4275.96
    [m ]
    4275.11
    [m ]
    4275.02
    [m ]
    4271.85
    [m ]
    4267.60
    [m ]