Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.11.2024 - 09:09
Time of last synchronization with Norwegian Offshore Directorate's internal systems

16/1-18

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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.
    16/1-18
    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
    Press release
    Multilateral
    Indicator telling if the parent well is multilateral, meaning it has more than one branch radiating from the main borehole. Example of legal values: YES, NO. See also Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    NO
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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
    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.
    16/1-18
    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.
    Lundin 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.
    1472-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.
    80
    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,
    24.02.2014
    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.
    14.05.2014
    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.
    16.10.2004
    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.
    14.05.2016
    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
    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.
    30.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    109.6
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2391.0
    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).
    2390.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    1.8
    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° 50' 28.11'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 17' 21.97'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6522730.93
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    458987.03
    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.
    7314

  • Wellbore history
    General
    Well 16/1-18 was drilled to appraise the Edvard Grieg Field on the Utsira High in the North Sea. The objective of the well was to delineate the southeastern part of the Edvard Grieg Field in order to optimise the drainage strategy and to determine the best possible location of production wells in this area.
    Operations and results
    A 9 7/8" pilot hole was drilled from seabed to 620 m to check for shallow gas. No shallow gas was seen. Appraisal well 16/1-18 was spudded with the semi-submersible installation Island Innovator on 24 February 2014 and drilled to TD at 2391 m in granitic basement rock. No significant problem was encountered in the operations. The well was drilled with spud mud down to 613 m and Aqua-Drill mud from 613 m to TD.
    No Jurassic sediments were penetrated in the well. BCU / Top Triassic, Hegre Group was encountered at 1894 m. A 62-metre gross oil column was found in conglomerate sandstone of the Hegre Group, where the top 43 metres have very good reservoir properties and the lower 19 metres have good reservoir quality. The oil/water contact was not encountered. Pressure points proved an oil gradient with the same density oil as in the rest of the Edvard Grieg Field, with an ODT at 1956 m. Oil shows were described on cores down to 1986 m. There were no shows above top reservoir level.
    A total of 95.6 m core was recovered in eight cores from the interval 1886 to 1986 m. MDT fluid samples were taken at 1894.9 m (oil), 1921.4 m (oil), 1954.5 m (oil), and 967.4 m (water).
    The well was permanently abandoned on 14 May 2014 as an oil appraisal well.
    Testing
    One DST was conducted in a 13-metre interval from 1938.9 to 1959.6 m in the lower part of the oil column in reservoir of good quality. The main flow in the test produced 135 Sm3 oil and 12000 Sm3 gas /day through a 28/64" choke and showed good flow properties from the entire oil zone. The GOR was 88 Sm3/Sm3, the oil gravity was 0.83 g/cm3, and the gas gravity was 0.66 (air = 1). The temperature profile for the test extrapolated to an initial top reservoir temperature of 80.1 °C at 1938.9 m.

  • 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]
    620.00
    2391.00

  • 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
    1886.0
    1909.6
    [m ]
    2
    1912.0
    1916.7
    [m ]
    3
    1920.0
    1923.3
    [m ]
    4
    1924.0
    1930.6
    [m ]
    5
    1932.0
    1941.7
    [m ]
    6
    1942.0
    1960.2
    [m ]
    7
    1960.2
    1967.7
    [m ]
    8
    1968.0
    1986.0
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    91.6
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • 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
    230.0
    36
    234.0
    0.00
    SURF.COND.
    20
    605.0
    26
    613.0
    1.62
    FIT
    INTERM.
    9 5/8
    1834.0
    12 1/4
    1847.0
    1.50
    FIT
    LINER
    7
    2201.0
    8 1/2
    2391.0
    0.00

  • Drill stem tests (DST)
    Drill stem tests (DST)
    Test number
    From depth MD
    [m]
    To depth MD
    [m]
    Choke size
    [mm]
    1.0
    1939
    1952
    11.1
    Drill stem tests (DST)
    Test number
    Final shut-in pressure
    [MPa]
    Final flow pressure
    [MPa]
    Bottom hole pressure
    [MPa]
    Downhole temperature
    [°C]
    1.0
    40
    Drill stem tests (DST)
    Test number
    Oil
    [Sm3/day]
    Gas
    [Sm3/day]
    Oil density
    [g/cm3]
    Gas grav. rel.air
    GOR
    [m3/m3]
    1.0
    135
    12000
    88

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    DSL CN ZDL ORIT XMAC RTEX MLL
    1787
    2387
    DSL FLEX MREX
    1830
    2386
    DSL IFX RCX
    1967
    2275
    DSL IFX RCX RSPS
    1895
    1967
    DSL PCOR
    1265
    1790
    DSL PCOR
    1410
    1819
    DSL PCOR
    1851
    2379
    DSL RCX
    780
    1669
    DSL UXPL ORIT STAR
    1830
    2383
    DSL VSP
    588
    2380
    DSL XMAC ORIT STAR
    607
    1023
    MWD LWD - DIR GR RES SON
    139
    618
    MWD LWD - GR RES NEU DEN SON ECD
    604
    2391

  • Lithostratigraphy

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    234
    1.39
    15.0
    Water Based
    317
    1.25
    16.0
    Water Based
    391
    1.39
    20.0
    Water Based
    613
    1.39
    22.0
    Water Based
    613
    1.32
    17.0
    Water Based
    618
    1.30
    14.0
    Water Based
    1181
    1.32
    26.0
    Water Based
    1660
    1.35
    9.0
    Water Based
    1676
    1.15
    14.0
    Water Based
    1748
    1.35
    32.0
    Water Based
    1847
    1.35
    29.0
    Water Based
    1850
    1.17
    22.0
    Water Based
    1889
    1.16
    17.0
    Water Based
    1941
    1.20
    17.0
    Water Based
    1969
    1.17
    15.0
    Water Based
    2066
    1.14
    19.0
    Water Based
    2202
    1.14
    1.0
    Brine
    2203
    1.15
    24.0
    Water Based
    2203
    1.15
    25.0
    Water Based
    2283
    1.14
    18.0
    Water Based
    2391
    1.14
    20.0
    Water Based