Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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11.11.2024 - 01:26
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30/9-5 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.
    30/9-5 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).
    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
    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.
    30/9-5
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NOD 3 - 84 - 19 SP. 1330
    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.
    Norsk Hydro Produksjon 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.
    467-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.
    54
    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,
    27.05.1985
    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.
    19.07.1985
    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.
    19.07.1987
    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.
    07.01.2015
    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.
    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 JURASSIC
    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.
    COOK 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.
    103.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2980.0
    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).
    2963.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    12.3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    85
    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.
    LATE 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.
    HEGRE GP
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 21' 31.34'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 53' 37.09'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6691522.47
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    494131.32
    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.
    478

  • Wellbore history
    General
    Well 30/9-5 S was drilled on the "J" prospect close to the western margin of the Horda Platform. The structure is bounded by Jurassic strata dipping down into the north, east and south and by the main Horda Platform fault to the west. The primary objective was to prove hydrocarbon accumulation in the Etive Formation of the Brent Group. Secondary objectives were possible hydrocarbons in sandstones if present in the Heather-Drake- and Cook Formations.
    Operations and results
    Wildcat well 30/9-5 S was spudded with the semi-submersible installation Treasure Seeker on 27 May 1985 and drilled to TD at 2980 m (2963 m TVD) in the Triassic Hegre Group. Due to shallow gas indications on the site survey seismic the well location was moved approximately 150 m. The well was then deviated from a kick off point at 1000 m to reach the planned target. No significant problem was encountered in the operations. The well was drilled with seawater and gel down to 910 m, with KCl/polymer mud from 910 m to 1935 m, and with NaCl/polymer mud from 1935 m to TD.
    The well encountered a gas bearing Cook Formation and minor amounts of gas in the Brent Group. No additional hydrocarbon bearing reservoirs were encountered by the well.
    The Brent Group (2236-2253 m, 2222-2239 m TVD) was found severely eroded in the well with poorly developed sands. The net sand distribution is limited to a thin layer at the top of the formation. The rest of the formation appears to be very silty. The gross thickness is 17 m with a net pay of only 0.5 m. The average porosity is 20.2% and the water saturation 58.2%. The Cook Formation (2447-2466 m, 2433-2452 m TVD) has moderately good reservoir qualities in the upper part but is silty and tight in the lower part. The gross thickness is 19 m and the net pay is 7.9 m. The average porosity is 20.4% and the water saturation 24.7%. The Statfjord Formation was encountered water bearing at 2604 m (2589.5 m TVD). In addition to shows in the hydrocarbon-bearing sandstones in the Brent and Cook formations, local weak shows were recorded in the uppermost Statfjord Group sandstone, while continuous shows were described in dolomite stringers at 1945 m to 1960 m in the Balder Formation and at 2160 m to 2185 m in the massive limestones at the top of the Shetland Group.
    Two conventional cores were cut in the well, one in the Cook Formation from 2455 m to 2473.2 m, and one in the Statfjord Formation from 2608 m to 2626.3 m. Two RFT runs were performed and 25 pressure recordings were done. Segregated samples were taken at 2452 m in the Cook Formation (gas, a little condensate, and water) and at 2238.5 m in the Brent Group (gas, trace condensate, and water).
    The well was permanently abandoned on 19 July 1985 as a gas discovery.
    Testing
    No drill stem test was performed.

  • Cuttings at the Norwegian Offshore Directorate
    Cuttings at the Norwegian Offshore Directorate
    Cuttings available for sampling?
    NO
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    220.00
    2980.00

  • 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
    2455.0
    2472.3
    [m ]
    2
    2608.0
    2626.2
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    35.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 2455-2460m
    Core photo at depth: 2460-2465m
    Core photo at depth: 2465-2470m
    Core photo at depth: 2470-2472m
    Core photo at depth: 2608-2613m
    2455-2460m
    2460-2465m
    2465-2470m
    2470-2472m
    2608-2613m
    Core photo at depth: 2613-2618m
    Core photo at depth: 2618-2623m
    Core photo at depth: 2623-2626m
    Core photo at depth:  
    Core photo at depth:  
    2613-2618m
    2618-2623m
    2623-2626m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    2242.0
    [m]
    SWC
    RRI
    2248.0
    [m]
    SWC
    RRI
    2251.0
    [m]
    SWC
    RRI
    2253.0
    [m]
    SWC
    RRI
    2255.0
    [m]
    SWC
    RRI
    2258.0
    [m]
    SWC
    RRI
    2262.0
    [m]
    SWC
    RRI
    2266.0
    [m]
    SWC
    RRI
    2281.0
    [m]
    SWC
    RRI
    2298.0
    [m]
    SWC
    RRI
    2305.0
    [m]
    SWC
    RRI
    2320.0
    [m]
    SWC
    RRI
    2334.0
    [m]
    SWC
    RRI
    2349.0
    [m]
    SWC
    RRI
    2357.0
    [m]
    SWC
    RRI
    2368.0
    [m]
    SWC
    RRI
    2382.0
    [m]
    SWC
    RRI
    2392.0
    [m]
    SWC
    RRI
    2404.0
    [m]
    SWC
    RRI
    2414.0
    [m]
    SWC
    RRI
    2425.0
    [m]
    SWC
    RRI
    2435.0
    [m]
    SWC
    RRI
    2448.0
    [m]
    SWC
    RRI
    2470.0
    [m]
    C
    RRI
    2488.0
    [m]
    SWC
    RRI
    2618.0
    [m]
    C
    RRI
    2624.0
    [m]
    C
    RRI

  • Lithostratigraphy

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.15
    pdf
    1.78
    pdf
    0.81
    pdf
    0.64

  • 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
    3.81
    pdf
    13.49

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL VDL
    125
    1908
    CST
    2080
    2502
    CST
    2522
    2979
    DLL MSFL GR CAL
    2220
    2645
    ISF LSS GR SP
    126
    2985
    LDL CNL CAL GR
    1908
    2985
    LDL GR CAL
    895
    1912
    MWD RESISTIVITY
    2028
    2929
    NGT
    2220
    2979
    RFT
    2238
    2940
    RFT
    2238
    0
    SHDT
    1908
    2985
    VSP
    128
    2985

  • 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
    216.0
    36
    219.0
    0.00
    LOT
    SURF.COND.
    20
    894.0
    26
    910.0
    1.66
    LOT
    INTERM.
    13 3/8
    1908.0
    17 1/2
    1935.0
    1.65
    LOT
    OPEN HOLE
    2980.0
    12 1/4
    2980.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    219
    1.05
    WATER BASED
    29.05.1985
    219
    1.05
    WATER BASED
    31.05.1985
    219
    1.05
    WATER BASED
    31.05.1985
    549
    1.10
    3.0
    25.0
    WATER BASED
    31.05.1985
    885
    1.09
    6.0
    14.0
    WATER BASED
    03.06.1985
    885
    1.09
    8.0
    34.0
    WATER BASED
    03.06.1985
    885
    1.09
    8.0
    34.0
    WATER BASED
    03.06.1985
    897
    1.20
    9.0
    14.0
    WATER BASED
    03.06.1985
    910
    1.03
    WATER BASED
    06.06.1985
    910
    1.12
    14.0
    5.0
    WATER BASED
    06.06.1985
    910
    1.03
    WATER BASED
    06.06.1985
    910
    1.23
    21.0
    15.0
    WATER BASED
    06.06.1985
    910
    1.12
    14.0
    5.0
    WATER BASED
    06.06.1985
    1000
    1.15
    16.0
    6.0
    WATER BASED
    06.06.1985
    1188
    1.17
    21.0
    10.0
    WATER BASED
    10.06.1985
    1343
    1.25
    22.0
    11.0
    WATER BASED
    10.06.1985
    1525
    1.30
    27.0
    13.0
    WATER BASED
    10.06.1985
    1714
    1.35
    28.0
    12.0
    WATER BASED
    10.06.1985
    1746
    1.35
    24.0
    12.0
    WATER BASED
    11.06.1985
    1935
    1.30
    22.0
    9.0
    WATER BASED
    16.06.1985
    1935
    0.00
    WATER BASED
    30.06.1985
    1935
    1.30
    29.0
    11.0
    WATER BASED
    13.06.1985
    1935
    1.31
    24.0
    10.0
    WATER BASED
    16.06.1985
    1935
    1.30
    22.0
    9.0
    WATER BASED
    16.06.1985
    1935
    1.30
    27.0
    8.0
    WATER BASED
    30.06.1985
    1935
    1.30
    30.0
    13.0
    WATER BASED
    13.06.1985
    1935
    1.30
    29.0
    11.0
    WATER BASED
    13.06.1985
    1935
    1.31
    24.0
    10.0
    WATER BASED
    16.06.1985
    1935
    0.00
    WATER BASED
    16.06.1985
    1935
    0.00
    WATER BASED
    23.06.1985
    1935
    0.00
    WATER BASED
    26.06.1985
    1935
    1.30
    27.0
    8.0
    WATER BASED
    30.06.1985
    2028
    1.30
    23.0
    9.0
    WATER BASED
    30.06.1985
    2171
    1.30
    25.0
    9.0
    WATER BASED
    01.07.1985
    2250
    1.29
    26.0
    9.0
    WATER BASED
    02.07.1985
    2367
    1.25
    26.0
    11.0
    WATER BASED
    03.07.1985
    2455
    1.25
    24.0
    10.0
    WATER BASED
    04.07.1985
    2471
    1.25
    26.0
    9.0
    WATER BASED
    10.07.1985
    2529
    1.25
    25.0
    10.0
    WATER BASED
    10.07.1985
    2588
    1.25
    25.0
    10.0
    WATER BASED
    10.07.1985
    2608
    1.25
    26.0
    11.0
    WATER BASED
    10.07.1985
    2659
    1.25
    26.0
    10.0
    WATER BASED
    10.07.1985
    2775
    1.25
    22.0
    9.0
    WATER BASED
    10.07.1985
    2905
    1.25
    27.0
    12.0
    WATER BASED
    14.07.1985
    2947
    1.25
    24.0
    10.0
    WATER BASED
    14.07.1985
    2980
    1.25
    26.0
    11.0
    WATER BASED
    14.07.1985
    2980
    1.25
    27.0
    13.0
    WATER BASED
    15.07.1985
    2980
    1.26
    25.0
    10.0
    WATER BASED
    17.07.1985
    2980
    1.25
    29.0
    13.0
    WATER BASED
    14.07.1985
    2980
    1.25
    28.0
    13.0
    WATER BASED
    16.07.1985
    2980
    1.25
    29.0
    13.0
    WATER BASED
    14.07.1985
    2980
    1.25
    27.0
    13.0
    WATER BASED
    15.07.1985
    2980
    1.25
    28.0
    13.0
    WATER BASED
    16.07.1985
    2980
    1.26
    25.0
    10.0
    WATER BASED
    17.07.1985

  • 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
    0.23