Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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23.11.2024 - 01:30
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16/1-2

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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.
    16/1-2
    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).
    APPRAISAL
    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
    Field
    Name of the field the wellbore is related to.
    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.
    16/1-2
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    CS 75-30-shot point 2658
    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.
    Esso Exploration and Production Norway A/S
    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.
    160-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.
    35
    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,
    04.07.1976
    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.
    07.08.1976
    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.
    07.08.1978
    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.
    10.01.2010
    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.
    APPRAISAL
    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
    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
    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.
    LATE TRIASSIC
    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.
    SKAGERRAK FM
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    25.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    113.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2919.0
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    101
    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.
    PRE-DEVONIAN
    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.
    BASEMENT
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    58° 56' 9.22'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 13' 20.06'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6533324.63
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    455231.21
    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.
    332

  • Wellbore history
    General
    Well 16/1-2 is located on the eastern side of the Gudrun Terrace, towards the Utsira High in the North Sea. The well was designed to test all potential reservoirs through the Permian on a closure on a large, rotated fault-block. Primary objectives were Jurassic sandstones and secondary objectives were Paleocene sandstones.
    Operations and results
    Wildcat well 16/1-2 was spudded with the semi-submersible installation Ross Rig on 4 July 1976 and drilled to TD at 2919 m in granite basement. Loss of circulation in high-porosity Zechstein carbonates was the only significant problem encountered during the drilling of 16/1-2. Initial drilling from the sea floor to 1286 meters was with sea water and gel. Below this depth a fresh water and lignosulphonate mud system was used.
    The well penetrated several sands in the Tertiary including the Utsira, Skade, and Grid formations. The Heimdal Formation was encountered at 2098 m with a 10 m zone of strong oil shows. The zone was however judged by log analysis to be water-productive and the shows not of sufficient quality to warrant testing. Triassic sandstones were originally interpreted to be water-filled. Later reinterpretation have confirmed the presence of oil in the Triassic interval. There were no shows from either the Zechstein or the Rotliegendes sandstone.
    No cores were cut and no wire line fluid samples were taken.
    The well was permanently abandoned on 7 August 1976 as a dry well with shows.
    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]
    340.00
    2915.00

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    710.0
    [m]
    DC
    OD
    720.0
    [m]
    DC
    OD
    730.0
    [m]
    DC
    OD
    740.0
    [m]
    DC
    OD
    750.0
    [m]
    DC
    OD
    760.0
    [m]
    DC
    OD
    770.0
    [m]
    DC
    OD
    780.0
    [m]
    DC
    OD
    790.0
    [m]
    DC
    OD
    800.0
    [m]
    DC
    OD
    810.0
    [m]
    DC
    OD
    820.0
    [m]
    DC
    OD
    830.0
    [m]
    DC
    OD
    840.0
    [m]
    DC
    OD
    850.0
    [m]
    DC
    OD
    870.0
    [m]
    DC
    OD
    990.0
    [m]
    DC
    1020.0
    [m]
    DC
    1050.0
    [m]
    DC
    1080.0
    [m]
    DC
    1110.0
    [m]
    DC
    1120.0
    [m]
    DC
    1140.0
    [m]
    DC
    1170.0
    [m]
    DC
    1200.0
    [m]
    DC
    1230.0
    [m]
    DC
    1260.0
    [m]
    DC
    1290.0
    [m]
    DC
    1310.0
    [m]
    DC
    1320.0
    [m]
    DC
    1350.0
    [m]
    DC
    1380.0
    [m]
    DC
    1412.0
    [m]
    DC
    1424.0
    [m]
    DC
    1442.0
    [m]
    DC
    1472.0
    [m]
    DC
    1502.0
    [m]
    DC
    1532.0
    [m]
    DC
    1562.0
    [m]
    DC
    1574.0
    [m]
    DC
    1592.0
    [m]
    DC
    1622.0
    [m]
    DC
    1652.0
    [m]
    DC
    1658.0
    [m]
    DC
    1682.0
    [m]
    DC
    1712.0
    [m]
    DC
    1742.0
    [m]
    DC
    1754.0
    [m]
    DC
    1772.0
    [m]
    DC
    1802.0
    [m]
    DC
    1802.0
    [m]
    DC
    1832.0
    [m]
    DC
    1838.0
    [m]
    DC
    1844.0
    [m]
    DC
    1850.0
    [m]
    DC
    1856.0
    [m]
    DC
    1862.0
    [m]
    DC
    1892.0
    [m]
    DC
    1916.0
    [m]
    DC
    1922.0
    [m]
    DC
    1934.0
    [m]
    DC
    1952.0
    [m]
    DC
    1964.0
    [m]
    DC
    1982.0
    [m]
    DC
    1994.0
    [m]
    DC
    2012.0
    [m]
    DC
    2018.0
    [m]
    DC
    2026.0
    [m]
    DC
    2042.0
    [m]
    DC
    2048.0
    [m]
    DC
    2054.0
    [m]
    DC
    2060.0
    [m]
    DC
    2060.0
    [m]
    DC
    2072.0
    [m]
    DC
    2075.0
    [m]
    SWC
    2084.0
    [m]
    DC
    2096.0
    [m]
    SWC
    2102.0
    [m]
    SWC
    2102.0
    [m]
    DC
    2107.0
    [m]
    SWC
    2120.0
    [m]
    DC
    2132.0
    [m]
    DC
    2150.0
    [m]
    DC
    2162.0
    [m]
    DC
    2174.0
    [m]
    DC
    2192.0
    [m]
    DC
    2198.0
    [m]
    DC
    2221.0
    [m]
    SWC
    2222.0
    [m]
    DC
    2228.0
    [m]
    DC
    2234.0
    [m]
    DC
    2237.0
    [m]
    SWC
    2240.0
    [m]
    DC
    2240.0
    [m]
    DC
    2246.0
    [m]
    DC
    2252.0
    [m]
    DC
    2258.0
    [m]
    DC
    2270.5
    [m]
    SWC
    2282.0
    [m]
    DC
    2286.5
    [m]
    SWC
    2296.0
    [m]
    SWC
    2297.0
    [m]
    DC
    2312.0
    [m]
    DC
    2327.0
    [m]
    DC
    2339.0
    [m]
    DC
    2352.5
    [m]
    SWC
    2357.0
    [m]
    DC
    2366.0
    [m]
    DC
    2384.5
    [m]
    SWC
    2387.0
    [m]
    DC
    2396.0
    [m]
    DC
    2414.0
    [m]
    DC
    APT
    2417.0
    [m]
    DC
    2420.0
    [m]
    DC
    2423.0
    [m]
    DC
    2423.5
    [m]
    SWC
    2426.0
    [m]
    DC
    2432.0
    [m]
    DC
    APT
    2441.0
    [m]
    DC
    2444.0
    [m]
    DC
    2446.0
    [m]
    SWC
    2447.0
    [m]
    DC
    APT
    2449.0
    [m]
    SWC
    2456.0
    [m]
    SWC
    APT
    2456.0
    [m]
    DC
    2459.0
    [m]
    DC
    2462.0
    [m]
    SWC
    2462.0
    [m]
    DC
    APT
    2470.0
    [m]
    SWC
    2471.0
    [m]
    DC
    2480.0
    [m]
    DC
    2483.0
    [m]
    DC
    2485.0
    [m]
    SWC
    2491.5
    [m]
    SWC
    2495.0
    [m]
    SWC
    2503.0
    [m]
    SWC
    2507.0
    [m]
    DC
    2510.0
    [m]
    DC
    2514.0
    [m]
    SWC
    2522.0
    [m]
    DC
    2540.0
    [m]
    DC
    2555.0
    [m]
    DC
    2562.5
    [m]
    SWC
    2573.0
    [m]
    DC
    2582.0
    [m]
    DC
    2603.0
    [m]
    DC
    2615.0
    [m]
    DC
    2627.0
    [m]
    DC
    2633.0
    [m]
    DC
    2642.0
    [m]
    DC
    2649.0
    [m]
    SWC
    2660.0
    [m]
    DC
    2670.0
    [m]
    DC
    2672.0
    [m]
    DC
    2684.0
    [m]
    DC
    2690.0
    [m]
    DC
    2693.5
    [m]
    SWC
    2702.0
    [m]
    DC
    2702.5
    [m]
    SWC
    2705.0
    [m]
    DC
    2708.0
    [m]
    DC
    2714.0
    [m]
    DC
    2717.0
    [m]
    SWC
    2718.0
    [m]
    SWC
    2719.0
    [m]
    SWC
    2722.0
    [m]
    SWC
    2723.0
    [m]
    SWC
    2726.0
    [m]
    SWC
    2732.0
    [m]
    SWC
    2733.0
    [m]
    SWC
    2735.0
    [m]
    SWC
    2744.0
    [m]
    SWC
    2749.0
    [m]
    SWC
    2752.0
    [m]
    SWC
    2753.0
    [m]
    SWC
    2756.0
    [m]
    SWC
    2772.0
    [m]
    SWC
    2775.5
    [m]
    SWC
    2782.0
    [m]
    SWC
    2787.5
    [m]
    SWC
    2791.5
    [m]
    SWC
    2812.0
    [m]
    SWC
    2817.0
    [m]
    SWC
    2832.0
    [m]
    SWC
    2850.0
    [m]
    SWC
    2880.0
    [m]
    SWC
    2900.0
    [m]
    SWC

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.39

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    1.47

  • 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
    1.65
    pdf
    3.26

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL
    1714
    2678
    CST
    200
    1193
    CST 2-3
    0
    0
    FDC CNL
    2662
    2921
    HDT
    1800
    2705
    HDT
    2662
    2921
    ISF SON GR
    1264
    2485
    ISF SON GR
    2050
    2713
    ISF SON GR
    2622
    2921
    ISF SON GR CBL
    324
    1286
    VEOCITY
    0
    0

  • 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
    172.0
    36
    172.0
    0.00
    LOT
    SURF.COND.
    20
    325.0
    26
    340.0
    0.00
    LOT
    INTERM.
    13 3/8
    1264.0
    17 1/2
    1285.0
    0.00
    LOT
    INTERM.
    9 5/8
    2656.0
    12 1/4
    2732.0
    0.00
    LOT
    OPEN HOLE
    2917.0
    8 1/2
    2917.0
    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
    1.10
    waterbased
    580
    1.02
    waterbased
    1285
    1.10
    waterbased
    2170
    1.10
    waterbased
    2731
    1.11
    waterbased
    2918
    1.07
    waterbased

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    2711.14
    [m ]
    2426.29
    [m ]
    2429.32
    [m ]
    2432.35
    [m ]
    2435.38
    [m ]
    2438.41
    [m ]
    2441.44
    [m ]
    2444.47
    [m ]
    2447.50
    [m ]
    2450.53
    [m ]
    2453.56
    [m ]
    2456.59
    [m ]
    2459.62
    [m ]
    2462.65
    [m ]
    2465.68
    [m ]
    2477.80
    [m ]
    2501.04
    [m ]
    2522.25
    [m ]
    2543.46
    [m ]
    2564.67
    [m ]
    2585.88
    [m ]
    2603.06
    [m ]
    2624.27
    [m ]
    2645.48
    [m ]
    2666.69
    [m ]
    2690.93
    [m ]