Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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30/5-3 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.
    30/5-3 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
    Press release
    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
    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.
    30/5-3
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NH05M01.inline 3230 & xline 10226
    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.
    1228-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.
    66
    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,
    06.02.2009
    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.
    12.04.2009
    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.
    12.04.2011
    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.
    12.04.2011
    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
    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.
    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.
    HEGRE GP
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    26.0
    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).
    4335.0
    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).
    3863.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    52.8
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    150
    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.
    EARLY 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.
    TEIST FM (INFORMAL)
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 39' 26.2'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 39' 33.2'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6724821.34
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    481369.63
    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.
    6043

  • Wellbore history
    General
    Well 30/5-3 S was drilled on the Corvus prospect in the northern part of the Viking Graben at the edge of the Horda Platform in the Northern North Sea. The objective of the well was to prove commercial amount of hydrocarbons in the prognosed Statfjord Fm in the Corvus prospect and to collect all data needed for development of the prospect. Well 30/5-3 S would also serve as kick-off well for a geological sidetrack to a Cretaceous target in the Corvus structure.
    Operations and results
    Wildcat well 30/5-3 S was spudded with the semi-submersible installation Transocean Winner on 6 February 2009 and drilled to TD at 4335 m (3863 m TVD) in Triassic shales of the Teist Formation. No shallow gas was observed by the ROV or by the MWD while drilling the 36" hole and the 26" hole. The well was vertical down to ca 2550 m and drilled deviated from there to TD. No significant problems were encountered in the operations. The well was drilled with seawater and bentonite sweeps down to 205 m, with seawater/ bentonite sweeps/ Glydril from 205 m to 1004 m, with Glydril mud from 1004 m to 2335 m, and with Versatec oil based mud from 2335 m to TD.
    The well penetrated the Triassic at 3396m MD, at the prognosed Jurassic target depth and proved more erosion than expected in the area. The expected Jurassic sediments of the Statfjord Formation were not present; instead the formations of the Hegre Group were encountered directly below the base Cretaceous unconformity. Wire line logs proved a gas bearing interval throughout the drilled Triassic interval with no indication of a GWC encountered. Weak oil shows were recorded in the Triassic sands; otherwise no shows were reported from the well.
    Two cores were cut in the Lunde Fm and one core in the thicker sands of the Lomvi Formation. MDT gas samples were taken at 3843.0 m, 3960.0 m, 4122.0 m, and at 4198.5 m. In addition to these samples a scanning station using dual packers was done at 4215.0 m, confirming light hydrocarbons at that depth. The samples taken at 3843.0 and 3960.0 m, (dual-packer sampling) were of poor quality with high contamination of mud filtrate.
    The well was plugged back to 1000 m for sidetracking and permanently abandoned on 12 April 2009 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?
    YES
    Cuttings at the Norwegian Offshore Directorate
    Cutting sample, top depth [m]
    Cutting samples, bottom depth [m]
    1010.00
    4334.00

  • 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
    3456.5
    3483.8
    [m ]
    2
    3483.8
    3511.4
    [m ]
    3
    4139.0
    4167.7
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    83.6
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Lithostratigraphy

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    AIT OBMI MSIP-TLC
    3230
    4300
    CBL MSIP
    950
    1485
    DUAL-OBMI MSIP PPC
    4300
    4335
    EDTC MDT MRPA-TLC
    3454
    4215
    MWD - ARCVRES9 POWERPULSE
    1001
    2335
    MWD - GVR6 TELE ECO
    3423
    4335
    MWD - POWERPULSE
    139
    201
    MWD - STETH GVR6 TELE ECO
    3290
    3456
    MWD - TELE ARCVRES8
    2335
    3290
    PEX CMR-TLC
    3240
    4240
    PPC XPT
    0
    0
    PPC XPT GR HGNS EDTC LEH ECRD
    4300
    4335
    VSP-PDS
    2515
    4240

  • 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
    201.0
    36
    205.0
    0.00
    LOT
    SURF.COND.
    20
    997.0
    26
    1004.0
    1.68
    LOT
    INTERM.
    14
    2330.0
    17 1/2
    2335.0
    1.84
    LOT
    INTERM.
    9 5/8
    3288.0
    12 1/4
    3290.0
    2.03
    LOT
    OPEN HOLE
    4335.0
    8 1/2
    4335.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    1001
    1.33
    17.0
    Glydril
    1004
    1.39
    31.0
    Versatec
    1400
    1.35
    24.0
    Glydril
    1720
    1.45
    24.0
    Glydril
    2046
    1.45
    24.0
    Glydril
    2302
    1.45
    24.0
    Glydril
    2335
    1.48
    29.0
    Glydril
    2335
    1.48
    28.0
    Glydril
    2830
    1.51
    34.0
    Versatec
    2950
    1.51
    33.0
    Versatec
    3151
    1.51
    35.0
    Versatec
    3290
    1.62
    45.0
    Versatec
    3290
    1.62
    45.0
    Versatec
    3392
    1.62
    43.0
    Versatec
    3512
    1.72
    46.0
    Versatec
    4003
    1.71
    53.0
    Versatec
    4050
    1.70
    49.0
    Versatec
    4158
    1.73
    58.0
    Versatec
    4271
    1.70
    55.0
    Versatec
    4335
    1.40
    25.0
    Versatec
    4335
    1.48
    27.0
    Versatec
    4335
    1.70
    56.0
    Versatec