Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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05.11.2024 - 01:27
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9/12-1

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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.
    9/12-1
    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
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    9/12-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    LINE 310 SP. 1692.
    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.
    A/S Norske Shell
    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.
    24-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.
    40
    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,
    28.03.1969
    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.
    06.05.1969
    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.
    06.05.1971
    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.
    25.04.2005
    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.
    26.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    61.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2698.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    73
    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.
    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.
    SMITH BANK FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    57° 11' 40'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    4° 57' 21'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6340869.09
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    618188.74
    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.
    163

  • Wellbore history
    General
    Well 9/12-1 is located in the North Sea, in the Danish-Norwegian Basin west of the Krabbe Fault Zone and Lista Fault Blocks. It was drilled near the crest of a salt induced anticlinal feature. The well is very similar to the 9/8-1 well, but the various geological units are somewhat thinner in 9/8-1. The objective of the well was to test the Tertiary and Mesozoic sequences.
    Operations and results
    Wildcat well 9/12-1 was spudded with the semi-submersible installation Sedneth I on 28 March 1969 and drilled to TD at 2698 m in the Triassic Smith Bank Formation. The 36" hole was drilled to 133 m and the 30" casing was run to 131 m. An 18 1/2" hole was drilled to 403 m, and two joints of 20" casing were hung from the 30" housing before the 13 3/8" casing was set at 395 m. Seawater was used as drilling fluid in the 36" and 18" holes and the returns were to the sea floor. After the setting of the 13 3/8" casing the mud system was converted to a Spersene/ XP-20 seawater mud, which was used to TD.
    The well encountered porous Danian/Late Cretaceous limestones as well as Triassic and Jurassic sandstones, but no hydrocarbons. The Triassic was represented by about 600 m of continental red beds. There was a major unconformity to the overlying 65 m thick Middle Jurassic sandstones, which represent a marginal marine, deltaic environment. The Late Jurassic consisted of 165 m of mainly dark shales. During the Early Cretaceous in excess of 300 m of shales were deposited in the area while the Late Cretaceous is represented by 375 m of carbonates. From the Tertiary on the sedimentation turned to a clastic regime. Deposition of fine-grained sediments prevailed although this was interrupted by the deposition of more sandy units. The Tertiary is made up of about 1200 m of sediments in this well. Late Jurassic source rocks were confirmed by the well, but were found immature. The absence of hydrocarbons was by the operator firmly attributed to the immaturity of source rocks. No conventional core was cut and no fluid sample taken. Sixty-eight sidewall cores were recovered.
    The well was permanently abandoned on 6 May 1969 as a dry hole.
    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]
    408.00
    2698.00

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1340.0
    [ft]
    DC
    RRI
    1400.0
    [ft]
    DC
    RRI
    1408.5
    [ft]
    DC
    OD
    1420.6
    [ft]
    DC
    OD
    1432.8
    [ft]
    DC
    OD
    1445.0
    [ft]
    DC
    OD
    1457.2
    [ft]
    DC
    OD
    1460.0
    [ft]
    DC
    RRI
    1469.4
    [ft]
    DC
    OD
    1481.6
    [ft]
    DC
    OD
    1493.8
    [ft]
    DC
    OD
    1500.0
    [ft]
    DC
    RRI
    1506.0
    [ft]
    DC
    OD
    1518.2
    [ft]
    DC
    OD
    1530.4
    [ft]
    DC
    OD
    1540.0
    [ft]
    DC
    RRI
    1542.5
    [ft]
    DC
    OD
    1554.7
    [ft]
    DC
    OD
    1566.9
    [ft]
    DC
    OD
    1579.1
    [ft]
    DC
    OD
    1591.3
    [ft]
    DC
    OD
    1603.5
    [ft]
    DC
    OD
    1640.0
    [ft]
    DC
    RRI
    1700.0
    [ft]
    DC
    RRI
    1760.0
    [ft]
    DC
    RRI
    1820.0
    [ft]
    DC
    RRI
    1900.0
    [ft]
    DC
    RRI
    2040.0
    [ft]
    DC
    RRI
    2140.0
    [ft]
    DC
    RRI
    2240.0
    [ft]
    DC
    RRI
    2380.0
    [ft]
    DC
    RRI
    2460.0
    [ft]
    DC
    RRI
    2540.0
    [ft]
    DC
    RRI
    2620.0
    [ft]
    DC
    RRI
    2700.0
    [ft]
    DC
    RRI
    2820.0
    [ft]
    DC
    RRI
    2900.0
    [ft]
    DC
    RRI
    3040.0
    [ft]
    DC
    RRI

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.44

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.26
    pdf
    0.96
    pdf
    0.66
    pdf
    1.16

  • 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
    11.07

  • Documents – Norwegian Offshore Directorate papers

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CBL
    85
    1209
    CDM
    1209
    2698
    DIR
    1209
    2698
    FDC
    395
    2696
    FDC
    395
    2696
    GR
    91
    395
    IES
    395
    2697
    LL-7
    395
    2698
    MLL-C
    395
    2698
    SGR-C
    395
    2694
    SNP
    1209
    2698
    SRC
    85
    2697
    TS
    30
    1173

  • 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
    130.0
    36
    132.0
    0.00
    LOT
    SURF.COND.
    13 3/8
    395.0
    18 1/2
    402.0
    0.00
    LOT
    INTERM.
    9 5/8
    1210.0
    12 1/2
    1218.0
    0.00
    LOT
    OPEN HOLE
    2698.0
    8 1/2
    2698.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    122
    1.02
    seawater
    1144
    1.43
    48.0
    waterbased
    1248
    1.35
    47.0
    waterbased
    1860
    1.36
    48.0
    waterbased
    2121
    1.36
    45.0
    waterbased
    2371
    1.36
    57.0
    waterbased
    2697
    1.36
    48.0
    waterbased