Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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24.11.2024 - 01:27
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2/4-14

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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.
    2/4-14
    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.
    SUSPENDED
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    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
    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.
    2/4-14
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    LINJE NS-5-235 & SP585
    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.
    Saga Petroleum ASA
    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.
    593-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.
    118
    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,
    06.10.1988
    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.
    31.01.1989
    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.
    31.01.1991
    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.
    13.12.2005
    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/GAS
    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.
    YES
    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.
    EARLY CRETACEOUS
    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.
    MANDAL FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    26.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    68.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4734.0
    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).
    4733.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    2.2
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    150
    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 CRETACEOUS
    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.
    MANDAL FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    56° 41' 5.26'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 8' 43.08'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6282449.13
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    508901.59
    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.
    1343

  • Wellbore history
    General
    Well 2/4-14 was designed to drill the same structure on the Steinbit Terrace as well 2/4-13, which was junked on 6 October 1988 due to technical problems. The wells were drilled in the middle of a structural/stratigraphic closure on a rotated fault block. Their primary objectives were to assess the hydrocarbon potential of the main structure in block 2/4. The target was expected Late Jurassic sandstone.
    Operations and results
    Wildcat well 2/4-14 was spudded with the semi-submersible installation Treasure Saga on 6 October 1988, 53.4 m NNW of the 2/4-13 location. It was drilled to TD at 4734 m in the Late Jurassic Tyne Group. The well was drilled with spud mud and gel down to 916 m, with KCl mud from 916 m to 4453 m, and with Hi Temp Polymer mud from 4453 m to TD.
    Drilling went without significant problems down to 3687 m in the 12 1/4" section. On trip out of hole the drill string got stuck with the bit at 3538 m. The pipe could not be freed and a cement plug was set from 3475 m to 3395 m. A technical sidetrack was kicked off from 3415 m to 3463 m. Due to high temperatures the MWD worked only in part, but drilling of the remaining part of the 12 1/4" section to 4453 m proceeded without significant problems. The 8 1/2" hole was drilled to 4713 m where gas cut mud were observed with a maximum gas reading of 68 %. The hole was drilled to 4714 m when the mud weight was increased to 2.10 SG. This mud weight was near the fracture gradient at the casing seat. The equivalent circulating density at the drilling pump rates exceeded the fracture gradient at the casing seat. At 4734 m the well kicked, and gained a total 6.5 m3. The well was shut in and several attempts were made to gain control, without success. Coil tubing was run in to 4691 m and drill pipe circulated to seawater. A 1/2 bbl was taken and the well closed in. Finally, as the drill pipe started to come out of the hole, the shear-rams were activated and the drill pipe was cut on 20 January 1989. The well now developed into an underground blow out. An attempt to bullhead the well was performed, but the kill hose burst at the gooseneck. A new safety plug and no-go cap was entered in the BOP, and annular preventer closed from surface. On 31 January 1989 anchors were pulled and the well was suspended for re-entry with a different rig. Treasure Saga left the location for drilling a relief well ca 1 km to the south (2/4-15 S) to assist in killing operations.
    No hydrocarbon bearing intervals were detected above the Mandal Formation at 4708 m. The MWD logs and the cutting descriptions indicated two thin oil bearing sand stringers in the interval from 4708 - 4713.5 m. A third sandstone came in at 4733 m where the well kicked. No cores were cut in this well. The well is classified as a minor discovery.
    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]
    2520.00
    4729.00

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.67

  • 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
    2.50
    pdf
    18.70

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    ACBL VDL
    93
    2509
    CDL CNL GR
    2509
    4453
    COREGUN
    2522
    4447
    DIPLOG
    3000
    4452
    FMT
    3474
    3603
    LSBHC DDL GR
    2509
    4449
    MWD - GR RES DIR
    218
    4734
    VSP
    1685
    4450

  • 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
    215.0
    36
    217.0
    0.00
    LOT
    SURF.COND.
    20
    901.0
    26
    916.0
    1.82
    LOT
    INTERM.
    13 3/8
    2509.0
    17 1/2
    2526.0
    2.03
    LOT
    INTERM.
    9 5/8
    4437.0
    12 1/4
    4437.0
    2.18
    LOT
    OPEN HOLE
    4734.0
    8 1/2
    4734.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    213
    1.06
    WATER BASED
    18.10.1988
    217
    1.06
    WATER BASED
    18.10.1988
    217
    1.06
    6.0
    16.3
    WATER BASED
    18.10.1988
    766
    1.16
    5.0
    14.4
    WATER BASED
    18.10.1988
    916
    1.16
    4.0
    7.7
    WATER BASED
    18.10.1988
    916
    1.20
    6.0
    7.7
    WATER BASED
    18.10.1988
    916
    1.20
    12.0
    2.4
    WATER BASED
    18.10.1988
    916
    1.20
    WATER BASED
    18.10.1988
    931
    1.20
    13.0
    2.9
    WATER BASED
    18.10.1988
    1344
    1.33
    22.0
    5.3
    WATER BASED
    18.10.1988
    1769
    1.40
    36.0
    7.7
    WATER BASED
    18.10.1988
    2123
    1.55
    32.0
    8.7
    WATER BASED
    19.10.1988
    2257
    1.55
    37.0
    6.3
    WATER BASED
    24.10.1988
    2407
    1.60
    32.0
    5.3
    WATER BASED
    24.10.1988
    2526
    1.60
    22.0
    5.8
    WATER BASED
    24.10.1988
    2526
    1.60
    30.0
    6.3
    WATER BASED
    24.10.1988
    2526
    1.61
    20.0
    5.3
    WATER BASED
    24.10.1988
    2526
    1.60
    30.0
    5.8
    WATER BASED
    24.10.1988
    2803
    1.61
    30.0
    7.2
    WATER BASED
    26.10.1988
    3032
    1.65
    30.0
    8.2
    WATER BASED
    26.10.1988
    3060
    1.66
    27.0
    7.7
    WATER BASED
    28.10.1988
    3177
    1.65
    21.0
    4.8
    WATER BASED
    28.10.1988
    3218
    1.65
    28.0
    6.3
    WATER BASED
    07.11.1988
    3273
    1.65
    34.0
    8.7
    WATER BASED
    07.11.1988
    3285
    1.65
    30.0
    6.3
    WATER BASED
    07.11.1988
    3285
    1.65
    32.0
    7.2
    WATER BASED
    07.11.1988
    3312
    1.65
    31.0
    5.8
    WATER BASED
    07.11.1988
    3341
    1.65
    31.0
    5.3
    WATER BASED
    07.11.1988
    3388
    1.65
    26.0
    5.8
    WATER BASED
    07.11.1988
    3421
    1.65
    26.0
    5.8
    WATER BASED
    07.11.1988
    3423
    1.68
    25.0
    4.8
    WATER BASED
    24.11.1988
    3441
    1.65
    27.0
    5.8
    WATER BASED
    07.11.1988
    3444
    1.68
    21.0
    3.4
    WATER BASED
    24.11.1988
    3464
    1.68
    22.0
    5.3
    WATER BASED
    25.11.1988
    3523
    1.65
    27.0
    6.8
    WATER BASED
    07.11.1988
    3561
    1.68
    21.0
    4.8
    WATER BASED
    25.11.1988
    3622
    1.68
    30.0
    5.8
    WATER BASED
    28.11.1988
    3660
    1.68
    26.0
    6.8
    WATER BASED
    28.11.1988
    3687
    1.65
    30.0
    7.7
    WATER BASED
    11.11.1988
    3687
    1.65
    36.0
    8.7
    WATER BASED
    11.11.1988
    3687
    1.65
    20.0
    3.9
    WATER BASED
    14.11.1988
    3687
    1.65
    23.0
    4.4
    WATER BASED
    14.11.1988
    3687
    1.65
    20.0
    3.9
    WATER BASED
    15.11.1988
    3687
    1.65
    20.0
    3.4
    WATER BASED
    17.11.1988
    3687
    1.65
    28.0
    4.8
    WATER BASED
    24.11.1988
    3687
    1.68
    22.0
    4.8
    WATER BASED
    24.11.1988
    3687
    1.65
    25.0
    4.8
    WATER BASED
    14.11.1988
    3687
    1.65
    20.0
    3.4
    WATER BASED
    16.11.1988
    3687
    1.65
    20.0
    4.8
    WATER BASED
    18.11.1988
    3716
    1.68
    25.0
    7.2
    WATER BASED
    28.11.1988
    3745
    1.68
    26.0
    5.8
    WATER BASED
    29.11.1988
    3773
    1.68
    24.0
    6.8
    WATER BASED
    30.11.1988
    3810
    1.68
    21.0
    6.8
    WATER BASED
    01.12.1988
    3911
    1.68
    23.0
    6.8
    WATER BASED
    05.12.1988
    3949
    1.68
    23.0
    5.8
    WATER BASED
    05.12.1988
    3990
    1.68
    22.0
    4.8
    WATER BASED
    05.12.1988
    4037
    1.68
    22.0
    4.8
    WATER BASED
    07.12.1988
    4048
    1.68
    22.0
    4.8
    WATER BASED
    07.12.1988
    4087
    1.68
    21.0
    6.3
    WATER BASED
    08.12.1988
    4153
    1.68
    19.0
    7.2
    WATER BASED
    12.12.1988
    4205
    1.68
    22.0
    6.3
    WATER BASED
    12.12.1988
    4262
    1.68
    23.0
    5.8
    WATER BASED
    12.12.1988
    4316
    1.68
    23.0
    5.3
    WATER BASED
    12.12.1988
    4366
    1.72
    24.0
    7.2
    WATER BASED
    13.12.1988
    4415
    1.72
    26.0
    11.5
    WATER BASED
    14.12.1988
    4453
    1.72
    21.0
    4.4
    WATER BASED
    20.12.1988
    4453
    1.72
    22.0
    3.4
    WATER BASED
    22.12.1988
    4453
    1.72
    16.0
    2.0
    WATER BASED
    27.12.1988
    4453
    1.72
    17.0
    2.4
    WATER BASED
    27.12.1988
    4453
    1.72
    19.0
    5.3
    WATER BASED
    19.12.1988
    4453
    1.72
    23.0
    4.8
    WATER BASED
    19.12.1988
    4453
    1.72
    20.0
    3.4
    WATER BASED
    20.12.1988
    4453
    1.72
    21.0
    3.9
    WATER BASED
    20.12.1988
    4453
    1.72
    22.0
    3.4
    WATER BASED
    21.12.1988
    4453
    1.72
    22.0
    3.4
    WATER BASED
    27.12.1988
    4453
    1.72
    14.0
    2.9
    WATER BASED
    03.01.1989
    4453
    1.72
    16.0
    2.4
    WATER BASED
    03.01.1989
    4453
    1.72
    20.0
    3.9
    WATER BASED
    03.01.1989
    4485
    1.72
    19.0
    3.4
    WATER BASED
    03.01.1989
    4505
    1.72
    21.0
    4.4
    WATER BASED
    05.01.1989
    4561
    1.72
    18.0
    4.4
    WATER BASED
    09.01.1989
    4586
    1.72
    17.0
    3.9
    WATER BASED
    09.01.1989
    4645
    1.93
    21.0
    5.8
    WATER BASED
    09.01.1989
    4650
    2.00
    21.0
    2.9
    WATER BASED
    09.01.1989
    4695
    2.08
    24.0
    3.9
    WATER BASED
    09.01.1989
    4714
    2.10
    24.0
    5.3
    WATER BASED
    10.01.1989
    4720
    2.09
    23.0
    3.4
    WATER BASED
    11.01.1989
    4733
    2.12
    26.0
    4.4
    WATER BASED
    24.01.1989
    4734
    2.12
    40.0
    7.7
    WATER BASED
    17.01.1989
    4734
    2.12
    24.0
    2.4
    WATER BASED
    18.01.1989
    4734
    2.12
    24.0
    2.4
    WATER BASED
    19.01.1989
    4734
    2.09
    23.0
    3.9
    WATER BASED
    13.01.1989
    4734
    2.12
    43.0
    9.6
    WATER BASED
    17.01.1989
    4734
    2.12
    24.0
    2.4
    WATER BASED
    17.01.1989
    4734
    2.12
    24.0
    2.4
    WATER BASED
    20.01.1989
    4734
    2.12
    WATER BASED
    24.01.1989
    4734
    2.12
    26.0
    4.4
    WATER BASED
    24.01.1989
    4734
    2.12
    WATER BASED
    25.01.1989

  • 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
    0.22