Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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21.11.2024 - 01:28
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7317/9-1

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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.
    7317/9-1
    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
    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
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    Main area
    Name of the area on the Norwegian Continental Shelf where the wellbore is located. Legal values: BARENTS SEA, NORWEGIAN SEA, NORTH SEA.
    BARENTS SEA
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    7317/9-1
    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.
    Statoil 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.
    1669-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.
    25
    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,
    13.09.2017
    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.
    07.10.2017
    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.
    02.01.2019
    Plugged and abondon date
    Date when the P&A-operations of the wellbore was finished, as reported by the operator to the Norwegian Offshore Directorate throught DDRS (Daily Drilling Reporting System). Only applied once pr. wellhead/surface location.
    07.10.2017
    Plugged date
    Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).
    07.10.2017
    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.
    02.05.2019
    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.
    32.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    434.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1500.0
    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).
    1497.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    6.2
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    39
    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.
    SNADD FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    73° 27' 50.46'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    17° 48' 10.53'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    8154556.93
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    589020.10
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    33
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    8240

  • Wellbore history
    General
    Exploration well 7317/9-1 Koigen Central, and the two associated pilot wells 7317/6-U-1 and 7317/9-U-1, were drilled in the Koigen Central prospect, located on the Stappen High, in the south-western Barents Sea. The primary target was the upper Realgrunnen Subgroup (Stø and Nordmela formations). Secondary targets were the lower Realgrunnen Subgroup (Tubåen and Fruholmen formations), and the Triassic Snadd Formation.
    Operations and results
    The first pilot hole, 7317/6-U-1, located 4.5 km north of the main well location was designed to gain control of the stratigraphy. It was drilled vertically down to a TD of 1216 m in the Hekkingen Formation. The second pilot hole, 7317/9-U-1, was located ca. 40 m north-north east of the main well. It was drilled vertically down to a TD of 806 m in the Hekkingen Formation, the approximate setting depth of the 13 3/8” casing shoe in the main well. No shallow gas was encountered in the two pilots.
    Wildcat well 7317/9-1 was spudded with the semi-submersible installation Songa Enabler on 13 September 2017 and drilled to TD at 1500 m in the Triassic Snadd Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 816 m and with KCl/GEM/Polymer water-based mud from 816 m to TD.
    The primary targets Stø and Nordmela formations were not present in the well. Instead top Fuglen was penetrated from 893 to 980 m and the secondary target Tubåen and Fruholmen formations were penetrated from 980 to 1218 m. The well was dry, with trace shows in sandstones in the Tubåen and Fruholmen formations. The shows were noticed as weak to dull direct fluorescence on cuttings in the intervals 1043 - 1070 m, 1115 - 1157 m and 1448 m - 1447 m. Weak dull direct fluorescence was also seen in four of the sidewall cores (1008.4 m, 1108.5 m, 1141 m and 1142.8 m). The conventional cores had no shows. No cut fluorescence was observed on any type of samples.
    One core was cut in the Tubåen Formation from 1033 to 1070 m with 99.4% recovery. No fluid sample was taken.
    The well was permanently abandoned on 7 October 2017 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]
    818.00
    1499.00

  • 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
    1033.0
    1069.8
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    36.8
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • 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
    INTERM.
    13 3/8
    807.0
    17 1/2
    813.0
    1.42
    FIT
    LINER
    9 7/8
    1067.0
    12 1/4
    1070.0
    1.93
    LOT
    OPEN HOLE
    1500.0
    8 1/2
    1500.0
    0.00

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    FMI MSIP
    1067
    1487
    IFA PO PS
    872
    1061
    MWD - ARC GS TELE
    1070
    1500
    MWD - ARC TELES
    466
    813
    MWD - GVR ARC GS TELE
    813
    1033
    PEX ECS
    807
    1068
    PEX HRLA ZAIT ECS XPT
    1067
    1495
    SS HRLA
    466
    1068
    VSP
    482
    1488
    XL ROCK
    819
    1031
    XL ROCK
    1077
    1491

  • Lithostratigraphy
    Lithostratigraphy
    Top depth [mMD RKB]
    Lithostrat. unit
    466
    502
    502
    715
    793
    893
    980
    980
    1079
    1219

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    590
    1.20
    11.0
    Spud Mud
    594
    1.60
    18.0
    KCl/Polymer
    594
    1.35
    14.0
    KCl/Polymer/GEM
    620
    1.03
    1.0
    Seawater
    633
    1.20
    19.0
    Spud Mud
    644
    1.60
    18.0
    KCl/Polymer
    644
    1.35
    14.0
    KCl/Polymer/GEM
    813
    1.24
    15.0
    KCl/Polymer/GEM
    911
    1.21
    16.0
    KCl/Polymer/GEM
    957
    1.20
    15.0
    KCl/Polymer/GEM
    1071
    1.12
    15.0
    KCl/Polymer/GEM
    1500
    1.12
    13.0
    KCl/Polymer/GEM

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    818.0
    [m]
    DC
    CGG
    824.0
    [m]
    DC
    CGG
    830.0
    [m]
    DC
    CGG
    839.0
    [m]
    DC
    CGG
    846.0
    [m]
    SWC
    CGG
    851.0
    [m]
    SWC
    CGG
    854.9
    [m]
    SWC
    CGG
    858.3
    [m]
    SWC
    CGG
    862.9
    [m]
    SWC
    CGG
    865.0
    [m]
    SWC
    CGG
    874.0
    [m]
    SWC
    CGG
    879.3
    [m]
    SWC
    CGG
    887.0
    [m]
    DC
    CGG
    893.0
    [m]
    DC
    CGG
    899.0
    [m]
    DC
    CGG
    905.0
    [m]
    DC
    CGG
    911.0
    [m]
    DC
    CGG
    918.1
    [m]
    SWC
    CGG
    923.0
    [m]
    DC
    CGG
    930.0
    [m]
    SWC
    CGG
    938.0
    [m]
    DC
    CGG
    943.8
    [m]
    SWC
    CGG
    949.8
    [m]
    SWC
    CGG
    956.0
    [m]
    DC
    CGG
    962.0
    [m]
    DC
    CGG
    968.0
    [m]
    DC
    CGG
    974.0
    [m]
    DC
    CGG
    980.0
    [m]
    DC
    CGG
    987.3
    [m]
    SWC
    CGG
    995.0
    [m]
    DC
    CGG
    999.2
    [m]
    SWC
    CGG
    1004.0
    [m]
    DC
    CGG
    1010.0
    [m]
    DC
    CGG
    1016.5
    [m]
    SWC
    CGG
    1022.0
    [m]
    DC
    CGG
    1028.0
    [m]
    DC
    CGG
    1033.3
    [m]
    C
    CGG
    1035.3
    [m]
    C
    CGG
    1038.6
    [m]
    C
    CGG
    1039.7
    [m]
    C
    CGG
    1042.6
    [m]
    C
    CGG
    1044.7
    [m]
    C
    CGG
    1049.3
    [m]
    C
    CGG
    1053.7
    [m]
    C
    CGG
    1056.3
    [m]
    C
    CGG
    1059.5
    [m]
    C
    CGG
    1064.4
    [m]
    C
    CGG
    1069.5
    [m]
    C
    CGG
    1073.0
    [m]
    DC
    CGG
    1082.0
    [m]
    DC
    CGG
    1091.0
    [m]
    DC
    CGG
    1100.0
    [m]
    DC
    CGG
    1109.0
    [m]
    DC
    CGG
    1118.0
    [m]
    DC
    CGG
    1125.6
    [m]
    SWC
    CGG
    1133.0
    [m]
    DC
    CGG
    1140.5
    [m]
    SWC
    CGG
    1151.0
    [m]
    DC
    CGG
    1158.5
    [m]
    SWC
    CGG
    1169.0
    [m]
    DC
    CGG
    1178.0
    [m]
    DC
    CGG
    1187.0
    [m]
    DC
    CGG
    1196.0
    [m]
    DC
    CGG
    1205.0
    [m]
    DC
    CGG
    1226.0
    [m]
    DC
    CGG
    1235.0
    [m]
    DC
    CGG
    1244.0
    [m]
    DC
    CGG
    1253.0
    [m]
    DC
    CGG
    1262.0
    [m]
    DC
    CGG
    1269.4
    [m]
    SWC
    CGG
    1286.0
    [m]
    DC
    CGG
    1295.0
    [m]
    DC
    CGG
    1304.0
    [m]
    DC
    CGG
    1313.0
    [m]
    DC
    CGG
    1322.0
    [m]
    DC
    CGG
    1331.0
    [m]
    DC
    CGG
    1340.0
    [m]
    DC
    CGG
    1358.0
    [m]
    DC
    CGG
    1367.0
    [m]
    DC
    CGG
    1379.0
    [m]
    DC
    CGG
    1388.0
    [m]
    DC
    CGG
    1409.0
    [m]
    DC
    CGG
    1421.0
    [m]
    DC
    CGG
    1442.0
    [m]
    DC
    CGG
    1478.0
    [m]
    DC
    CGG
    1491.3
    [m]
    SWC
    CGG
    1499.0
    [m]
    DC
    CGG