Factpages Norwegian petroleum directorate
Factpages Norwegian petroleum directorate
NPD          Norsk
06.06.2023 - 01:36
Time of last synchronization with NPD's internal systems

2/5-12

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  • General information

    General information
    Attribute Value
    Wellbore name
    Official name of wellbore based on NPD guidelines for designation of wells and wellbores.
    2/5-12
    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 NPD.
    INJECTING: It was injected to the wellbore at the time of the operators last monthly report to the NPD.
    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
    Press release
    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 NPD guidelines for designation of wells and wellbores.
    2/5-12
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    STTM-94 Inline 1184 Crossline 1515
    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.
    Amerada Hess Norge AS
    Drill permit
    The drilling permit number together with the version of the drilling permit as stated in the drilling permit granted by the NPD.
    1022-L
    Drilling facility
    NPD's name of the facility which the wellbore was drilled from.
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    86
    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,
    24.11.2001
    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.
    22.02.2002
    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.
    22.02.2004
    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
    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 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.
    39.3
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    58.4
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4153.0
    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).
    4152.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.1
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    130
    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.
    FARSUND FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 43' 18.5'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 34' 50.81'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6286710.19
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    535545.53
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    31
    NPDID wellbore
    NPD's unique id for the wellbore.
    4433
  • Wellbore history

    General
    Well 2/5-12 is located ca 15 km northeast of the TOR field on the Steinbit Terrace in the Central Graben. The objective of drilling well 2/5-12 was to test the hydrocarbon potential of the Upper Jurassic section within a four-way dip closure. A thick wedge of Jurassic deposits was identifiable from seismic. Mapping suggested the reason for the thickened section was due to an influx of sand from the shelf to the northeast. The primary target horizons were the R 1 and R 2 units within the Upper Jurassic Farsund Formation. These were thought to be lateral equivalents of the Gyda Sandstone seen in wells 2/2-1 and 2/2-4. The reservoir was thought to be sealed by Upper Jurassic shales. The four-way dip closure was formed during the Late Cretaceous to Palaeocene by inversion of a Jurassic fault. Subsequently it was covered by Palaeocene and younger post-rift sag sediments. The structure onlaps Late Cretaceous shales and chalks.
    Operations and results
    Wildcat well was spudded with the jack-up installation Transocean Nordic on 24 November 2001 and drilled to TD in the Late Jurassic Farsund Formation. The well was drilled with seawater and gel sweeps down to 954 m, with KCl/Glycol mud from 954 m to 2381 m, and with XP07 oil based mud from 2381 m to TD. The well proceeded generally as planned without any really major problems. Data acquisition went according to plan with the exception of the 17.5" wire line logging run, which had to be dropped due to severe well bore stability problems.
    All the easily identifiable lithostratigraphic tops and log markers came in deeper than prognosed by circa 60 m. The prognosed sandstone reservoirs in R1 and R2 were absent. Shows were recorded in claystones of the Mandal and Farsund Formations. Pore pressures in the Tertiary were higher than prognosed, but were as prognosed in the Cretaceous and in line with expectations in the Jurassic. Drilling terminated 71 m above planned TD when the kick margin was lost. No cores were cut and no fluid samples were taken. At this point the whole of the R1 unit and the better part of the R2 unit had been drilled fulfilling the well objectives. The well was permanently abandoned on 22 February 2002 as a dry well.
    Testing
    No drill stem test was performed
  • Cuttings at the NPD

    Cuttings at the NPD
    Cuttings available for sampling?
    YES
    Cuttings at the NPD
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    180.00
    2400.00
  • Palynological slides at the NPD

    Palynological slides at the NPD
    Sample depth
    Depth unit
    Sample type
    Laboratory
    3689.0
    [m]
    DC
    GEOLAB
    3692.0
    [m]
    DC
    GEOLAB
    3695.0
    [m]
    DC
    GEOLAB
    3698.0
    [m]
    DC
    GEOLAB
    3701.0
    [m]
    DC
    GEOLAB
    3704.0
    [m]
    DC
    GEOLAB
    3713.0
    [m]
    DC
    GEOLAB
    3719.0
    [m]
    DC
    GEOLAB
    3725.0
    [m]
    DC
    GEOLAB
    3740.0
    [m]
    DC
    GEOLAB
    3743.0
    [m]
    DC
    GEOLAB
    3746.0
    [m]
    DC
    GEOLAB
    3752.0
    [m]
    DC
    GEOLAB
    3755.0
    [m]
    DC
    GEOLAB
    3758.0
    [m]
    DC
    GEOLAB
    3761.0
    [m]
    DC
    GEOLAB
    3764.0
    [m]
    DC
    GEOLAB
    3770.0
    [m]
    DC
    GEOLAB
    3773.0
    [m]
    DC
    GEOLAB
    3776.0
    [m]
    DC
    GEOLAB
    3779.0
    [m]
    DC
    GEOLAB
    3782.0
    [m]
    DC
    GEOLAB
    3788.0
    [m]
    DC
    GEOLAB
    3791.0
    [m]
    DC
    GEOLAB
    3794.0
    [m]
    DC
    GEOLAB
    3797.0
    [m]
    DC
    GEOLAB
    3800.0
    [m]
    DC
    GEOLAB
    3806.0
    [m]
    DC
    GEOLAB
    3809.0
    [m]
    DC
    GEOLAB
    3812.0
    [m]
    DC
    GEOLAB
    3816.0
    [m]
    DC
    GEOLAB
    3819.0
    [m]
    DC
    GEOLAB
    3824.0
    [m]
    DC
    GEOLAB
    3827.0
    [m]
    DC
    GEOLAB
    3830.0
    [m]
    DC
    GEOLAB
    3833.0
    [m]
    DC
    GEOLAB
    3836.0
    [m]
    DC
    GEOLAB
    3839.0
    [m]
    DC
    GEOLAB
    3842.0
    [m]
    DC
    GEOLAB
    3845.0
    [m]
    DC
    GEOLAB
    3851.0
    [m]
    DC
    GEOLAB
    3854.0
    [m]
    DC
    GEOLAB
    3857.0
    [m]
    DC
    GEOLAB
    3860.0
    [m]
    DC
    GEOLAB
    3863.0
    [m]
    DC
    GEOLAB
    3866.0
    [m]
    DC
    GEOLAB
    3869.0
    [m]
    DC
    GEOLAB
    3872.0
    [m]
    DC
    GEOLAB
    3875.0
    [m]
    DC
    GEOLAB
    3878.0
    [m]
    DC
    GEOLAB
    3881.0
    [m]
    DC
    GEOLAB
    3884.0
    [m]
    DC
    GEOLAB
    3887.0
    [m]
    DC
    GEOLAB
    3890.0
    [m]
    DC
    GEOLAB
    3893.0
    [m]
    DC
    GEOLAB
    3899.0
    [m]
    DC
    GEOLAB
    3902.0
    [m]
    DC
    GEOLAB
    3905.0
    [m]
    DC
    GEOLAB
    3908.0
    [m]
    DC
    GEOLAB
    3911.0
    [m]
    DC
    GEOLAB
    3914.0
    [m]
    DC
    GEOLAB
    3917.0
    [m]
    DC
    GEOLAB
    3920.0
    [m]
    DC
    GEOLAB
    3923.0
    [m]
    DC
    GEOLAB
    3926.0
    [m]
    DC
    GEOLAB
    3929.0
    [m]
    DC
    GEOLAB
    3932.0
    [m]
    DC
    GEOLAB
    3935.0
    [m]
    DC
    GEOLAB
    3938.0
    [m]
    DC
    GEOLAB
    3941.0
    [m]
    DC
    GEOLAB
    3944.0
    [m]
    DC
    GEOLAB
    3950.0
    [m]
    DC
    GEOLAB
    3953.0
    [m]
    DC
    GEOLAB
    3956.0
    [m]
    DC
    GEOLAB
    3959.0
    [m]
    DC
    GEOLAB
    3962.0
    [m]
    DC
    GEOLAB
    3965.0
    [m]
    DC
    GEOLAB
    3968.0
    [m]
    DC
    GEOLAB
    3971.0
    [m]
    DC
    GEOLAB
    3974.0
    [m]
    DC
    GEOLAB
    3977.0
    [m]
    DC
    GEOLAB
    3980.0
    [m]
    DC
    GEOLAB
    3983.0
    [m]
    DC
    GEOLAB
    3986.0
    [m]
    DC
    GEOLAB
    3989.0
    [m]
    DC
    GEOLAB
    3992.0
    [m]
    DC
    GEOLAB
    3995.0
    [m]
    DC
    GEOLAB
    3998.0
    [m]
    DC
    GEOLAB
    4001.0
    [m]
    DC
    GEOLAB
    4004.0
    [m]
    DC
    GEOLAB
    4007.0
    [m]
    DC
    GEOLAB
    4010.0
    [m]
    DC
    GEOLAB
    4013.0
    [m]
    DC
    GEOLAB
    4016.0
    [m]
    DC
    GEOLAB
    4019.0
    [m]
    DC
    GEOLAB
    4022.0
    [m]
    DC
    GEOLAB
    4025.0
    [m]
    DC
    GEOLAB
    4031.0
    [m]
    DC
    GEOLAB
    4034.0
    [m]
    DC
    GEOLAB
    4037.0
    [m]
    DC
    GEOLAB
    4040.0
    [m]
    DC
    GEOLAB
    4043.0
    [m]
    DC
    GEOLAB
    4046.0
    [m]
    DC
    GEOLAB
    4052.0
    [m]
    DC
    GEOLAB
    4055.0
    [m]
    DC
    GEOLAB
    4058.0
    [m]
    DC
    GEOLAB
    4061.0
    [m]
    DC
    GEOLAB
    4064.0
    [m]
    DC
    GEOLAB
    4067.0
    [m]
    DC
    GEOLAB
    4073.0
    [m]
    DC
    GEOLAB
    4076.0
    [m]
    DC
    GEOLAB
    4079.0
    [m]
    DC
    GEOLAB
    4082.0
    [m]
    DC
    GEOLAB
    4085.0
    [m]
    DC
    GEOLAB
    4088.0
    [m]
    DC
    GEOLAB
    4091.0
    [m]
    DC
    GEOLAB
    4094.0
    [m]
    DC
    GEOLAB
    4097.0
    [m]
    DC
    GEOLAB
    4100.0
    [m]
    DC
    GEOLAB
    4106.0
    [m]
    DC
    GEOLAB
    4112.0
    [m]
    DC
    GEOLAB
    4115.0
    [m]
    DC
    GEOLAB
    4118.0
    [m]
    DC
    GEOLAB
    4121.0
    [m]
    DC
    GEOLAB
    4124.0
    [m]
    DC
    GEOLAB
    4127.0
    [m]
    DC
    GEOLAB
    4130.0
    [m]
    DC
    GEOLAB
    4133.0
    [m]
    DC
    GEOLAB
    4136.0
    [m]
    DC
    GEOLAB
    4139.0
    [m]
    DC
    GEOLAB
    4142.0
    [m]
    DC
    GEOLAB
    4144.0
    [m]
    DC
    GEOLAB
    4151.0
    [m]
    DC
    GEOLAB
    4153.5
    [m]
    DC
    GEOLAB
  • Lithostratigraphy

  • Composite logs

    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.47
  • Geochemical information

    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    7.15
  • 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
    8.55
    .pdf
    29.33
  • Logs

    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    GR ZO-VSP
    1643
    3728
    MFC GR
    11
    3560
    MWD - DIR
    97
    174
    MWD - DIR
    174
    970
    MWD - DIR DGR EWR4
    174
    1014
    MWD - DIR DGR EWR4 BAT PWD DDR
    3730
    4153
    MWD - DIR DGR EWR4 PWD
    970
    3565
    MWD - DIR DGR EWR4 PWD DDS
    3565
    3730
    TTRM GR ZDEN CN MAC
    1876
    2757
    TTRM GR ZDEN CN MAC
    2601
    3727
  • 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
    32
    170.0
    36
    170.0
    0.00
    LOT
    INTERM.
    18 5/8
    954.0
    26
    960.0
    1.80
    LOT
    INTERM.
    13 3/8
    2381.0
    17 1/2
    2383.0
    1.71
    LOT
    PROD.
    9 5/8
    3720.0
    12 1/4
    3725.0
    2.10
    LOT
    OPEN HOLE
    4153.0
    8 1/2
    4153.0
    0.00
    LOT
  • Drilling mud

    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    173
    1.03
    4.0
    SPUD MUD
    969
    1.20
    25.0
    KCL/GLYCOL
    1300
    0.14
    20.0
    KCL/GLYCOL
    1839
    0.17
    22.0
    KCL/GLYCOL
    2153
    0.19
    23.0
    KCL/GLYCOL
    2358
    0.19
    24.0
    KCL/GLYCOL
    2400
    0.20
    34.0
    KCL/GLYCOL
    3218
    1.73
    29.0
    XP07 POBM
    3637
    1.73
    24.0
    XP07 POBM
    3730
    1.71
    23.0
    XP07 POBM
    3842
    1.86
    33.0
    XP07 POBM
    4005
    1.90
    37.0
    XP07 POBM
    4145
    1.97
    45.0
    XP07 POBM
    4153
    2.00
    50.0
    XP07 POBM
    4153
    1.04
    SEAWATER