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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35/9-5

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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.
    35/9-5
    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.
    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.
    NORTH SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    35/9-5
    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.
    Nexen Exploration 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 Norwegian Offshore Directorate.
    1290-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.
    38
    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,
    01.01.2010
    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.
    07.02.2010
    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.
    03.10.2011
    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.
    03.10.2011
    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
    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.
    DRY
    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.
    18.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    366.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3531.0
    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).
    3529.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    6.8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    116
    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 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.
    KROSSFJORD FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 19' 28.9'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    3° 48' 45.19'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6799386.69
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    543499.70
    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.
    6293

  • Wellbore history
    General
    The Brand well 35/9-5 was drilled ca 5 km west of the Gjøa Field on the Måløy slope in the northern North Sea. The main objective of the well was to evaluate the hydrocarbon potential of the Middle Cretaceous Agat Formation sandstone. The Agat trend had been tested by wells drilled north of Brand. The 35/9-3 well is an oil and gas discovery located 17 km to the northeast, whereas 35/3-3 and 35/3-4 known as Agat discoveries, encountered gas in coeval sands 58 km north. The Grosso well 35/6-2 S located to the north of the Brand well location also located good quality Agat sands. Based on these offsets, sandstones were expected of reasonably good quality with average porosities ranging from 18 to 22% and permeabilities of 1 to 200 mD.
    Operations and results
    Wildcat well 35/9-5 was spudded with the semi-submersible installation West Alpha on 1 January 2010 and drilled to TD at 3531 m in the Middle Jurassic Krossfjord Formation. No significant problem was encountered in the operations. The well was drilled with seawater and bentonite sweeps down to 470 m and with Glydril mud from 470 m to TD.
    The well penetrated rocks of Quaternary, Tertiary, Cretaceous, and Jurassic age. There was very little sand preserved in the Agat Formation at the 35/9-5 location. The formation is described as a sandy limestone to calcareous sand with approximately 4.1 m of net reservoir with average 18% porosity and 77% Sw. There was a 0.6 m interval that calculated as ?pay?, with a 55% Sw, but there were no shows to confirm hydrocarbons in the Agat Formation or in any other part of the well.
    No cores were cut. An MDT tool was run over the Middle Jurassic Krossfjord sandstone. Four stations were sampled, all tight. No valid pressure points or fluid samples were acquired.
    The well was permanently abandoned on 7 February as a dry well.
    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]
    480.00
    3531.00

  • 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
    463.0
    36
    470.0
    0.00
    LOT
    SURF.COND.
    20
    944.0
    26
    950.0
    1.68
    LOT
    INTERM.
    13 3/8
    1602.0
    17 1/2
    1608.0
    1.50
    LOT
    INTERM.
    9 5/8
    2727.0
    12 1/4
    2729.0
    1.70
    LOT
    OPEN HOLE
    3531.0
    8 1/2
    3531.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CMR HNGS
    2720
    3435
    LWD - DI
    382
    470
    LWD - GR RES DI PWD
    470
    2729
    LWD - RAB GR RES DI PWD
    2729
    3531
    MDT
    3376
    3386
    MSCT
    3363
    3522
    MSCT
    3477
    3522
    MSIP PEX
    382
    3500
    VSP
    1105
    3510

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    txt
    0.00
    txt
    0.09

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    507
    1.29
    22.0
    KCL mud
    900
    1.29
    16.0
    KCL mud
    950
    1.24
    18.0
    KCL mud
    1520
    1.24
    21.0
    Glydrill / KCL mud
    1650
    1.26
    22.0
    Glydrill / KCL mud
    2507
    1.34
    23.0
    Glydrill / KCL mud
    2630
    1.34
    26.0
    Glydrill / KCL mud
    3001
    1.40
    23.0
    Glydrill / KCL mud
    3123
    1.45
    10.0
    Glydrill / KCL mud
    3390
    1.24
    17.0
    Glydrill / KCL mud
    3390
    1.45
    26.0
    Glydrill / KCL mud

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    910.0
    [m]
    DC
    APT
    940.0
    [m]
    DC
    APT
    960.0
    [m]
    DC
    APT
    980.0
    [m]
    DC
    APT
    1000.0
    [m]
    DC
    APT
    1020.0
    [m]
    DC
    APT
    1060.0
    [m]
    DC
    APT
    1080.0
    [m]
    DC
    APT
    1100.0
    [m]
    DC
    APT
    1120.0
    [m]
    DC
    APT
    1160.0
    [m]
    DC
    APT
    1180.0
    [m]
    DC
    APT
    1200.0
    [m]
    DC
    APT
    1220.0
    [m]
    DC
    APT
    1240.0
    [m]
    DC
    APT
    1260.0
    [m]
    DC
    APT
    1280.0
    [m]
    DC
    APT
    1300.0
    [m]
    DC
    APT
    1320.0
    [m]
    DC
    APT
    1350.0
    [m]
    DC
    APT
    1360.0
    [m]
    DC
    APT
    1380.0
    [m]
    DC
    APT
    1400.0
    [m]
    DC
    APT
    1420.0
    [m]
    DC
    APT
    1440.0
    [m]
    DC
    APT
    1460.0
    [m]
    DC
    APT
    1480.0
    [m]
    DC
    APT
    1500.0
    [m]
    DC
    APT
    1520.0
    [m]
    DC
    APT
    1560.0
    [m]
    DC
    APT
    1580.0
    [m]
    DC
    APT
    1620.0
    [m]
    DC
    APT
    1640.0
    [m]
    DC
    APT
    1680.0
    [m]
    DC
    APT
    1700.0
    [m]
    DC
    APT
    1740.0
    [m]
    DC
    APT
    1760.0
    [m]
    DC
    APT
    1800.0
    [m]
    DC
    APT
    1820.0
    [m]
    DC
    APT
    1860.0
    [m]
    DC
    APT
    1880.0
    [m]
    DC
    APT
    1920.0
    [m]
    DC
    APT
    1940.0
    [m]
    DC
    APT
    1980.0
    [m]
    DC
    APT
    2000.0
    [m]
    DC
    APT
    2030.0
    [m]
    DC
    APT
    2060.0
    [m]
    DC
    APT
    2080.0
    [m]
    DC
    APT
    2120.0
    [m]
    DC
    APT
    2140.0
    [m]
    DC
    APT
    2170.0
    [m]
    DC
    APT
    2200.0
    [m]
    DC
    APT
    2220.0
    [m]
    DC
    APT
    2260.0
    [m]
    DC
    APT
    2280.0
    [m]
    DC
    APT
    2320.0
    [m]
    DC
    APT
    2340.0
    [m]
    DC
    APT
    2360.0
    [m]
    DC
    APT
    2390.0
    [m]
    DC
    APT
    2420.0
    [m]
    DC
    APT
    2440.0
    [m]
    DC
    APT
    2480.0
    [m]
    DC
    APT
    2500.0
    [m]
    DC
    APT
    2540.0
    [m]
    DC
    APT
    2560.0
    [m]
    DC
    APT
    2600.0
    [m]
    DC
    APT
    2620.0
    [m]
    DC
    APT
    2660.0
    [m]
    DC
    APT
    2680.0
    [m]
    DC
    APT
    2700.0
    [m]
    DC
    APT
    2721.0
    [m]
    DC
    APT
    2739.0
    [m]
    DC
    APT
    2760.0
    [m]
    DC
    APT
    2781.0
    [m]
    DC
    APT
    2799.0
    [m]
    DC
    APT
    2820.0
    [m]
    DC
    APT
    2841.0
    [m]
    DC
    APT
    2859.0
    [m]
    DC
    APT
    2880.0
    [m]
    DC
    APT
    2901.0
    [m]
    DC
    APT
    2919.0
    [m]
    DC
    APT
    2940.0
    [m]
    DC
    APT
    2961.0
    [m]
    DC
    APT
    2979.0
    [m]
    DC
    APT
    3000.0
    [m]
    DC
    APT
    3021.0
    [m]
    DC
    APT
    3039.0
    [m]
    DC
    APT
    3060.0
    [m]
    DC
    APT
    3081.0
    [m]
    DC
    APT
    3099.0
    [m]
    DC
    APT
    3141.0
    [m]
    DC
    APT
    3159.0
    [m]
    DC
    APT
    3180.0
    [m]
    DC
    APT
    3201.0
    [m]
    DC
    APT
    3219.0
    [m]
    DC
    APT
    3240.0
    [m]
    DC
    APT
    3261.0
    [m]
    DC
    APT
    3279.0
    [m]
    DC
    APT
    3291.0
    [m]
    DC
    APT
    3300.0
    [m]
    DC
    APT
    3309.0
    [m]
    DC
    APT
    3321.0
    [m]
    DC
    APT
    3330.0
    [m]
    DC
    APT
    3339.0
    [m]
    DC
    APT
    3351.0
    [m]
    DC
    APT
    3363.0
    [m]
    DC
    APT
    3369.0
    [m]
    DC
    APT
    3376.0
    [m]
    SWC
    APT
    3390.0
    [m]
    DC
    APT
    3400.9
    [m]
    SWC
    APT
    3411.0
    [m]
    DC
    APT
    3420.0
    [m]
    DC
    APT
    3429.0
    [m]
    DC
    APT
    3441.0
    [m]
    DC
    APT
    3450.0
    [m]
    DC
    APT
    3459.0
    [m]
    DC
    APT
    3471.0
    [m]
    DC
    APT
    3477.0
    [m]
    DC
    APT
    3489.0
    [m]
    DC
    APT
    3501.0
    [m]
    DC
    APT
    3510.0
    [m]
    DC
    APT
    3519.0
    [m]
    DC
    APT
    3522.1
    [m]
    SWC
    APT
    3531.0
    [m]
    DC
    APT