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

30/9-24

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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.
    30/9-24
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    30/9-24
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    NH05M01FINAL:inline 3454 & crossline 8687
    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.
    1272-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,
    10.09.2009
    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.
    17.10.2009
    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.
    17.10.2011
    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.
    17.10.2011
    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
    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.
    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.
    23.5
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    107.5
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    3767.0
    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).
    3764.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    10.4
    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.
    LUNDE FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    60° 29' 4.7'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 42' 43.2'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6705578.76
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    484170.80
    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.
    6210

  • Wellbore history
    General
    Well 30/9-24 was drilled on the Omega Nord Statfjord prospect, a rotated fault block, about 6 km southwest of the Oseberg field centre. The main objective of well 30/9-24 was to prove commercial accumulation of hydrocarbon in the Nansen and Eriksson Members in the Statfjord Formation. A secondary objective was to explore the Lower Statfjord reservoir. The TD of the well was planned to be into the Hegre Group.
    Operations and results
    Drilling operations were done from the semi-submersible installation Transocean Leader. Based on the site survey, shallow gas could not be excluded in the interval 272 to 480 m. A pilot hole, 30/9-24 U2, was therefore drilled on 10 September 2009 to 581 m, without identifying shallow gas. After the pilot the main well was spudded and drilled with a 17 1/2" hole to 1402 m with 30" conductor at 191 m. It was not possible to run the 13 3/8" casing below 253 m and it had to be pulled. It was also observed that the guideposts /PGB had subsided 4m. The well was therefore plugged, abandoned and named 30/9-24X.
    Wildcat well 30/9-24 was finally spudded on 16 September 2009, 29.4 m in direction 135.3 deg from the original location. The 30" conductor was set at 226 m and a 17 1/2" hole was drilled to 1294 m. When pulling out of the hole, the drill string got stuck at 1269 m. The string was cut at 1078 m. A cement plug was set and a 13 3/8" casing was run with shoe at 1014 m. A sidetrack, 30/9-24 T2, was then drilled from 1070 m to final TD at 3767 m in the Triassic Lunde Formation. The well was drilled with sea water and hi-vis pills down to 1294 m in the original hole, and with Versatec oil based mud in the sidetrack from kick-off at 1078 m to final TD.
    The well penetrated top of the primary objective, the Nansen Member, at 3150 m, and the secondary objective Lower Statfjord at 3368 m. All reservoirs were water wet. Fluorescence and cut fluorescence, possibly due to the oil based mud, were observed just below Base Cretaceous from 2856 to 2866 m and in the Nansen and Erikson Members from 3150 to 3250 m.
    As the well was dry no cores were cut and no wire line fluid samples were taken.
    The well was plugged, but attempts to cut the 30" conductor from the rig failed. The rig left location on 17 October 2009. The vessel Island Valiant arrived location on 30 October to cut and retrieve the 30" conductor and the wellhead housing that was left on location after the rig left, and to retrieve pre-laid anchors. Operations were completed on 6 November 2009. Well 30/9-24 is classified 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]
    1080.00
    3767.00

  • Lithostratigraphy

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    ATH PPC MSIP PEX
    1860
    3764
    MDT PRESS
    3152
    3209
    MDT PRESS
    3152
    3775
    MMWD LWD - ECOS TELE STET
    3048
    3767
    MWD LWD - ARCVRES6
    131
    581
    MWD LWD - ARCVRES6 PP
    1014
    1044
    MWD LWD - ARCVRES9
    191
    1402
    MWD LWD - ARCVRES9 PP
    1044
    3048

  • 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
    226.0
    36
    230.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    1014.0
    17 1/2
    1294.0
    1.51
    LOT
    INTERM.
    9 5/8
    3047.0
    12 1/4
    3051.0
    1.98
    LOT
    OPEN HOLE
    3767.0
    8 1/2
    3767.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    971
    1.35
    21.0
    KCl/Polymer/Glycol
    1070
    1.30
    26.0
    Versatec
    1078
    1.35
    25.0
    KCl/Polymer/Glycol
    1294
    1.35
    19.0
    Kill Fluid- SW/Bentonite
    1566
    1.37
    35.0
    Versatec
    2267
    1.46
    36.0
    Versatec
    2267
    1.45
    36.0
    Versatec
    3048
    1.47
    40.0
    Versatec
    3048
    1.47
    34.0
    Versatec
    3375
    1.31
    27.0
    Versatec
    3767
    1.33
    30.0
    Versatec