Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.11.2024 - 09:09
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7123/4-1 S

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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.
    7123/4-1 S
    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
    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
    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.
    7123/4-1
    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.
    StatoilHydro Petroleum 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.
    1172-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.
    41
    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,
    12.03.2008
    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.
    21.04.2008
    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.
    21.04.2010
    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.
    21.04.2010
    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
    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.
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    413.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2920.0
    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).
    2706.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    44
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    98
    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.
    MIDDLE TRIASSIC
    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.
    SNADD FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    71° 36' 49.3'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    23° 3' 48.7'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7947301.07
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    572637.44
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    34
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    5786

  • Wellbore history
    General
    The 7123/4-1 S and its sidetrack 7123/4-1 A Tornerose wells were drilled ca 50 km east of the Snøhvit Field in the Hammerfest Basin. The primary objective was to prove additional gas reserves in the Tornerose structure, east of the discovery wells 7122/6-1 and 7122/6-2. The Triassic reservoir was prognosed as similar to the reservoir encountered in 7122/6-1.
    Operations and results
    Well 7123/4-1 S was spudded with the semi-submersible installation Polar Pioneer on 12 March 2008. Due to junk in hole in the 17 1/2" section it was impossible to drill beyond 726 m. The primary well was thus plugged back and a technical sidetrack was made with kick-off at 681 m (termed 7123/4-1 ST2 in well reports, but no such distinction is made here). 7123/4-1 S was drilled to TD at 2920 m (2706.4 m TVD) in the Triassic Snadd Formation. Thereafter, on 14 May, a sidetrack 7123/4-1 A was kicked off from 1659 m and drilled to a depth of 2855.1 m (2626.3 m TVD) in the Triassic Snadd Formation. No shallow gas was observed by the ROV at the wellhead or by the MWD while drilling the 36" hole and the 17 1/2" hole sections. The top hole down to 1106 m was drilled with seawater/bentonite and CaCl2/polymer mud. Below 1106 m FormPro mud was used in both well tracks.
    Well 7123/4-1 S penetrated rocks of Quaternary, Tertiary, Cretaceous, Jurassic and Triassic ages. In well 7123/4-1 S the Snadd reservoir was penetrated at 2266.2 m (2222.6 m TVD), 41 m shallower than prognosis. Top Carnian reservoir within the Snadd Formation was penetrated at 2459.0 m (2364.1 m TVD), 28.9 meter shallower than prognosis. Two cores were cut in 7123/4-1 S in the Snadd Formation. The first core was cut in a thin sand above the Carnian reservoir from 2435 to 2452 m, while the second core was cut covering middle to lower parts of Carnian reservoir T1 and upper parts of Carnian reservoir T2 from 2474 to 2501 m. Pressure points were taken in the Capp Toscana Group and the Snadd Formation, whereas 1 gallon sample (MDT fluid sample) was taken in Carnian reservoir T2 (Snadd Formation).
    In sidetrack 7123/4-1 A the Snadd reservoir was penetrated at 2259.0 m (2185.1 m TVD), 14.3 m deeper than prognosis. Top Carnian reservoir within the Snadd Formation was penetrated at 2525.0 m (2376 m TVD), 21 meter deeper than prognosis. In 7123/4-1 A one core was cut from 2670 to 2697 m in a thin sandy sequence approximately 17 meter below the base of the Carnian reservoir in the Snadd Formation. Pressure points were taken in the Capp Toscana Group, whereas MDT fluid samples were collected at 2165.9 m (water and oil), 2166.4 m (water only), 2534.1 m (water only), 2542.6 m (water and oil), and at 2551.5 m (water and oil).
    High gas readings and fluorescence with cut on sandstone cuttings and cores in the Snadd Formation were reported in both wells. These shows were interpreted as residual hydrocarbons.
    Well 7123/4-1 S was permanently abandoned on 21 April 2008, while the sidetrack 7123/4-1 A was permanently abandoned on 14 May 2008. Both were classified as dry as a dry with shows of residual hydrocarbons.
    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
    2920.00

  • 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
    2435.0
    2451.6
    [m ]
    2
    2470.0
    2500.9
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    47.5
    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
    485.0
    36
    681.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    1100.0
    17 1/2
    1106.0
    1.45
    LOT
    INTERM.
    9 5/8
    2097.0
    12 1/4
    2098.0
    1.97
    LOT
    OPEN HOLE
    2920.0
    8 1/2
    2920.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CMR+ PEX HRLA HNGS ECS
    2097
    2915
    FMI MSIP
    1370
    2915
    MDT
    2105
    2887
    MWD - GVR6 ARCVRES6 TELESCOPE
    2098
    2920
    MWD - POWERPULSE ARCVRES
    681
    2098
    VSP WA-ZO
    395
    2915

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.32

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    txt
    0.00
    txt
    0.15

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    785
    1.34
    12.0
    FormPro
    1135
    1.30
    17.0
    FormPro
    1218
    1.32
    16.0
    FormPro
    1259
    1.32
    17.0
    FormPro
    1390
    1.32
    17.0
    FormPro
    1463
    1.32
    19.0
    FormPro
    1506
    1.32
    18.0
    FormPro
    1581
    1.32
    19.0
    FormPro
    1648
    1.32
    14.0
    Form Pro
    1648
    1.32
    13.0
    Form Pro
    1664
    1.32
    21.0
    FormPro
    1782
    1.32
    21.0
    FormPro
    1865
    1.32
    20.0
    FormPro
    1987
    1.32
    20.0
    FormPro
    2045
    1.32
    19.0
    FormPro
    2097
    1.32
    21.0
    FormPro
    2098
    1.32
    19.0
    FormPro
    2098
    1.32
    19.0
    FormPro
    2101
    1.29
    13.0
    FloPro
    2196
    1.28
    15.0
    FormPro
    2308
    1.29
    15.0
    FormPro
    2363
    1.28
    17.0
    FloPro
    2413
    1.28
    17.0
    FormPro
    2435
    1.28
    18.0
    FormPro
    2469
    1.30
    14.0
    FormPro
    2559
    1.29
    13.0
    Form Pro
    2710
    1.30
    15.0
    FormPro
    2805
    1.29
    16.0
    Form Pro
    2920
    1.29
    17.0
    FormPro

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1110.0
    [m]
    DC
    STATHYD
    1130.0
    [m]
    DC
    STATHY
    1150.0
    [m]
    DC
    STATHY
    1170.0
    [m]
    DC
    STATHY
    1190.0
    [m]
    DC
    STATHY
    1210.0
    [m]
    DC
    STATHY
    1230.0
    [m]
    DC
    STATHY
    1250.0
    [m]
    DC
    STATHY
    1270.0
    [m]
    DC
    STATHY
    1290.0
    [m]
    DC
    STATHY
    1310.0
    [m]
    DC
    STATHY
    1330.0
    [m]
    DC
    STATHY
    1350.0
    [m]
    DC
    STATHY
    1370.0
    [m]
    DC
    STATHY
    1390.0
    [m]
    DC
    STATHY
    1410.0
    [m]
    DC
    STATHY
    1430.0
    [m]
    DC
    STATHY
    1450.0
    [m]
    DC
    STATHY
    1470.0
    [m]
    DC
    STATHY
    1490.0
    [m]
    DC
    STATHY
    1510.0
    [m]
    DC
    STATHY
    1530.0
    [m]
    DC
    STATHY
    1550.0
    [m]
    DC
    STATHY
    1570.0
    [m]
    DC
    STATHY
    1590.0
    [m]
    DC
    STATHY
    1610.0
    [m]
    DC
    STATHY
    1630.0
    [m]
    DC
    STATHY
    1650.0
    [m]
    DC
    STATHY
    1670.0
    [m]
    DC
    STATHY
    1690.0
    [m]
    DC
    STATHY
    1710.0
    [m]
    DC
    STATHY
    1730.0
    [m]
    DC
    STATHY
    1750.0
    [m]
    DC
    STATHY
    1770.0
    [m]
    DC
    STATHY
    1790.0
    [m]
    DC
    STATHY
    1810.0
    [m]
    DC
    STATHY
    1820.0
    [m]
    DC
    STATHY
    1830.0
    [m]
    DC
    STATHY
    1840.0
    [m]
    DC
    STATHY
    1850.0
    [m]
    DC
    STATHY
    1860.0
    [m]
    DC
    STATHY
    1870.0
    [m]
    DC
    STATHY
    1880.0
    [m]
    DC
    STATHY
    1890.0
    [m]
    DC
    STATHY
    1900.0
    [m]
    DC
    STATHY
    1910.0
    [m]
    DC
    STATHY
    1920.0
    [m]
    DC
    STATHY
    1930.0
    [m]
    DC
    STATHY
    1940.0
    [m]
    DC
    STATHY
    1950.0
    [m]
    DC
    STATHY
    1960.0
    [m]
    DC
    STATHY
    1990.0
    [m]
    DC
    STATHY
    2000.0
    [m]
    DC
    STATHY
    2010.0
    [m]
    DC
    STATHY
    2020.0
    [m]
    DC
    STATHY
    2030.0
    [m]
    DC
    STATHY
    2040.0
    [m]
    DC
    STATHY
    2050.0
    [m]
    DC
    STATHY
    2060.0
    [m]
    DC
    STATHY
    2070.0
    [m]
    DC
    STATHY
    2080.0
    [m]
    DC
    STATHY
    2090.0
    [m]
    DC
    STATHY
    2100.0
    [m]
    DC
    STATHY
    2109.0
    [m]
    DC
    STATHY
    2118.0
    [m]
    DC
    STATHY
    2127.0
    [m]
    DC
    STATHY
    2136.0
    [m]
    DC
    STATHY
    2148.0
    [m]
    DC
    STATHY
    2154.0
    [m]
    DC
    STATHY
    2163.0
    [m]
    DC
    STATHY
    2169.0
    [m]
    DC
    STATHY
    2175.0
    [m]
    DC
    STATHY
    2181.0
    [m]
    DC
    STATHY
    2190.0
    [m]
    DC
    STATHY
    2199.0
    [m]
    DC
    STATHY
    2205.0
    [m]
    DC
    STATHY
    2211.0
    [m]
    DC
    STATHY
    2217.0
    [m]
    DC
    STATHY
    2226.0
    [m]
    DC
    STATHY
    2232.0
    [m]
    DC
    STATHY
    2238.0
    [m]
    DC
    STATHY
    2244.0
    [m]
    DC
    STATHY
    2253.0
    [m]
    DC
    STATHY
    2259.0
    [m]
    DC
    STATHY
    2265.0
    [m]
    DC
    STATHY
    2271.0
    [m]
    DC
    STATHY
    2277.0
    [m]
    DC
    STATHY
    2283.0
    [m]
    DC
    STATHY
    2292.0
    [m]
    DC
    STATHY
    2298.0
    [m]
    DC
    STATHY
    2304.0
    [m]
    DC
    STATHY
    2313.0
    [m]
    DC
    STATHY
    2319.0
    [m]
    DC
    STATHY
    2325.0
    [m]
    DC
    STATHY
    2331.0
    [m]
    DC
    STATHY
    2337.0
    [m]
    DC
    STATHY
    2343.0
    [m]
    DC
    STATHY
    2349.0
    [m]
    DC
    STATHY
    2358.0
    [m]
    DC
    STATHY
    2364.0
    [m]
    DC
    STATHY
    2370.0
    [m]
    DC
    STATHY
    2376.0
    [m]
    DC
    STATHY
    2382.0
    [m]
    DC
    STATHY
    2388.0
    [m]
    DC
    STATHY
    2400.0
    [m]
    DC
    STATHY
    2406.0
    [m]
    DC
    STATHY
    2412.0
    [m]
    DC
    STATHY
    2418.0
    [m]
    DC
    STATHY
    2424.0
    [m]
    DC
    STATHY
    2430.0
    [m]
    DC
    STATHY
    2454.0
    [m]
    DC
    STATHY
    2472.0
    [m]
    DC
    STATHY
    2475.6
    [m]
    CC
    STATHY
    2479.7
    [m]
    CC
    STATHY
    2481.7
    [m]
    CC
    STATHY
    2485.0
    [m]
    CC
    STATHY
    2487.8
    [m]
    CC
    STATHY
    2489.3
    [m]
    CC
    STATHY
    2493.6
    [m]
    CC
    STATHY
    2497.7
    [m]
    CC
    STATHY
    2500.4
    [m]
    CC
    STATHY
    2502.0
    [m]
    DC
    STATHY
    2544.0
    [m]
    DC
    STATHY
    2550.0
    [m]
    DC
    STATHY
    2556.0
    [m]
    DC
    STATHY
    2562.0
    [m]
    DC
    STATHY
    2568.0
    [m]
    DC
    STATHY
    2577.0
    [m]
    DC
    STATHY
    2586.0
    [m]
    DC
    STATHY
    2589.0
    [m]
    DC
    STATHY
    2598.0
    [m]
    DC
    STATHY
    2610.0
    [m]
    DC
    STATHY
    2616.0
    [m]
    DC
    STATHY
    2625.0
    [m]
    DC
    STATHY
    2631.0
    [m]
    DC
    STATHY
    2640.0
    [m]
    DC
    STATHY
    2649.0
    [m]
    DC
    STATHY
    2655.0
    [m]
    DC
    STATHY
    2661.0
    [m]
    DC
    STATHY
    2673.0
    [m]
    DC
    STATHY
    2685.0
    [m]
    DC
    STATHY
    2691.0
    [m]
    DC
    STATHY
    2697.0
    [m]
    DC
    STATHY
    2703.0
    [m]
    DC
    STATHY
    2709.0
    [m]
    DC
    STATHY
    2715.0
    [m]
    DC
    STATHY
    2721.0
    [m]
    DC
    STATHY
    2727.0
    [m]
    DC
    STATHY
    2733.0
    [m]
    DC
    STATHY
    2745.0
    [m]
    DC
    STATHY
    2751.0
    [m]
    DC
    STATHY
    2757.0
    [m]
    DC
    STATHY
    2763.0
    [m]
    DC
    STATHY
    2769.0
    [m]
    DC
    STATHY
    2775.0
    [m]
    DC
    STATHY
    2781.0
    [m]
    DC
    STATHY
    2787.0
    [m]
    DC
    STATHY
    2793.0
    [m]
    DC
    STATHY
    2799.0
    [m]
    DC
    STATHY
    2805.0
    [m]
    DC
    STATHY
    2811.0
    [m]
    DC
    STATHY
    2817.0
    [m]
    DC
    STATHY
    2823.0
    [m]
    DC
    STATHY
    2829.0
    [m]
    DC
    STATHY
    2835.0
    [m]
    DC
    STATHY
    2841.0
    [m]
    DC
    STATHY
    2847.0
    [m]
    DC
    STATHY
    2859.0
    [m]
    DC
    STATHY
    2865.0
    [m]
    DC
    STATHY
    2871.0
    [m]
    DC
    STATHY
    2883.0
    [m]
    DC
    STATHY
    2895.0
    [m]
    DC
    STATHY
    2907.0
    [m]
    DC
    STATHY

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    2474.05
    [m ]
    2479.00
    [m ]
    2484.00
    [m ]
    2492.25
    [m ]
    2499.00
    [m ]