Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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22.12.2024 - 01:25
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11/5-1

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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.
    11/5-1
    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
    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.
    11/5-1
    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.
    Norsk Hydro 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.
    1149-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.
    37
    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,
    07.08.2007
    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.
    12.09.2007
    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.
    12.09.2009
    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.
    12.09.2009
    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.
    23.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    176.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    1950.0
    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).
    1935.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    17.3
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    64
    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.
    SILURIAN
    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.
    BASEMENT
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    57° 36' 46.81'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    6° 36' 25.77'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6388291.50
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    357048.96
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    32
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    5596

  • Wellbore history
    General
    Well 11/5-1 was drilled to test the Loshavn prospect, a 3-way dip closure situated on the southern flank of the Farsund Basin. The primary objectives were to test the hydrocarbon potential in shallow marine sandstones of the Late to Middle Jurassic Sandnes and Bryne Formations. Secondary objectives were to test the source rock potential of the Late Jurassic Tau Formation; and to test the reservoir and hydrocarbon potential of the Permian Rotliegendes sandstones. The TD criterion was to drill 600 m below Top Rotliegendes.
    Operations and results
    Wildcat well 11/5-1 was spudded with the semi-submersible installation Polar Pioneer on 7 August 2007 and drilled to TD at 1950 m into Silurian basement. The well was spudded twice, with the second spud ca 30 m north-west of the original spud position. The well was drilled without much technical problems, but a significant deviation from vertical started below 1375 m. The deviation persisted down to TD, with maximum deviation of 17.3 deg at 1837 m, resulting in a TVD at TD that was 15 m short compared to measured TD. The well was drilled with sea water down to 415 m and with Formate polymer mud from 415 m to TD.
    The Late Jurassic Sandnes formation was drilled from 1276 m to 1322m. No Middle Jurassic (Bryne Formation) was present at the well location and the Permian Rotliegendes Sands were drilled from 1321 m to 1920 m. From 1920 m to TD biostratigraphic analyses indicate rocks of Silurian age. The Sandnes Formation was found to be an overall heterolithic transgressive unit of 45 m at the well location. It consisted of a lower shaly part with lower porosity, and an upper more sandy and porous. The upper part was slightly thicker than the lower. The Rotliegendes Group is a more than 500 m thick unit, very heterolithic, mainly composed of interbedded claystones, sandstones, conglomerates and siltstones with traces of limestones. Porosities were very low and wire line pressure tests proved them to be tight. An additional sandstone interval was drilled at the base of Cromer Knoll Group, from 1073 m to 1088 m, the ?Sauda Sandstone Unit?. All reservoir sections were water bearing. No shows were recorded in the well.
    No cores were cut and no wire line fluid samples were taken.
    The well was permanently abandoned on 12 September 2007 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]
    420.00
    1950.00

  • 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
    263.0
    36
    267.0
    0.00
    LOT
    SURF.COND.
    20
    410.0
    26
    415.0
    1.58
    LOT
    INTERM.
    9 5/8
    1063.0
    12 1/4
    1073.0
    2.32
    LOT
    OPEN HOLE
    1950.0
    8 1/2
    1950.0
    0.00
    LOT

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    MDT GR
    1077
    1862
    MSCT GR
    1077
    1347
    MSCT GR
    1077
    1920
    MWD-DIR APWD GR RES SON
    199
    1179
    MWD-DIR APWD GR RES SON RAB GEOV
    1179
    1950
    SP PEX TLD MCFL HGNS ECS DSI
    1038
    1952
    VSP
    1880
    1940

  • Lithostratigraphy

  • Composite logs
    Composite logs
    Document name
    Document format
    Document size [MB]
    pdf
    0.36

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    263
    1.04
    WATER BASED
    560
    1.20
    14.0
    WATER BASED
    863
    1.24
    16.0
    WATER BASED
    1073
    1.27
    16.0
    WATER BASED

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    430.0
    [m]
    DC
    P-PARLOU
    450.0
    [m]
    DC
    P-PARL
    470.0
    [m]
    DC
    P-PARL
    490.0
    [m]
    DC
    P-PARL
    510.0
    [m]
    DC
    P-PARL
    530.0
    [m]
    DC
    P-PARL
    550.0
    [m]
    DC
    P-PARL
    570.0
    [m]
    DC
    P-PARL
    590.0
    [m]
    DC
    P-PARL
    610.0
    [m]
    DC
    P-PARL
    630.0
    [m]
    DC
    P-PARL
    650.0
    [m]
    DC
    P-PARL
    670.0
    [m]
    DC
    P-PARL
    690.0
    [m]
    DC
    P-PARL
    710.0
    [m]
    DC
    P-PARL
    730.0
    [m]
    DC
    P-PARL
    750.0
    [m]
    DC
    P-PARL
    770.0
    [m]
    DC
    P-PARL
    790.0
    [m]
    DC
    P-PARL
    810.0
    [m]
    DC
    P-PARL
    830.0
    [m]
    DC
    P-PARL
    850.0
    [m]
    DC
    P-PARL
    870.0
    [m]
    DC
    P-PARL
    890.0
    [m]
    DC
    P-PARL
    910.0
    [m]
    DC
    P-PARL
    930.0
    [m]
    DC
    P-PARL
    950.0
    [m]
    DC
    P-PARL
    970.0
    [m]
    DC
    P-PARL
    990.0
    [m]
    DC
    P-PARL
    1010.0
    [m]
    DC
    P-PARL
    1030.0
    [m]
    DC
    P-PARL
    1050.0
    [m]
    DC
    P-PARL
    1070.0
    [m]
    DC
    P-PARL
    1083.0
    [m]
    SWC
    P-PARL
    1089.0
    [m]
    DC
    P-PARL
    1092.0
    [m]
    DC
    P-PARL
    1095.0
    [m]
    DC
    P-PARL
    1098.0
    [m]
    DC
    P-PARL
    1101.0
    [m]
    DC
    P-PARL
    1104.0
    [m]
    DC
    P-PARL
    1107.0
    [m]
    SWC
    P-PARL
    1110.0
    [m]
    DC
    P-PARL
    1113.0
    [m]
    SWC
    P-PARL
    1116.0
    [m]
    DC
    P-PARL
    1117.5
    [m]
    SWC
    P-PARL
    1123.0
    [m]
    SWC
    P-PARL
    1125.0
    [m]
    SWC
    P-PARL
    1127.5
    [m]
    SWC
    P-PARL
    1131.0
    [m]
    DC
    P-PARL
    1134.0
    [m]
    DC
    P-PARL
    1137.0
    [m]
    SWC
    P-PARL
    1140.0
    [m]
    SWC
    P-PARL
    1146.0
    [m]
    DC
    P-PARL
    1152.0
    [m]
    DC
    P-PARL
    1155.0
    [m]
    DC
    P-PARL
    1158.0
    [m]
    DC
    P-PARL
    1161.0
    [m]
    DC
    P-PARL
    1164.0
    [m]
    DC
    P-PARL
    1167.0
    [m]
    DC
    P-PARL
    1170.0
    [m]
    DC
    P-PARL
    1173.0
    [m]
    DC
    P-PARL
    1176.0
    [m]
    DC
    P-PARL
    1181.0
    [m]
    SWC
    P-PARL
    1185.0
    [m]
    DC
    P-PARL
    1188.0
    [m]
    DC
    P-PARL
    1191.0
    [m]
    DC
    P-PARL
    1194.0
    [m]
    DC
    P-PARL
    1197.0
    [m]
    DC
    P-PARL
    1200.0
    [m]
    DC
    P-PARL
    1203.0
    [m]
    DC
    P-PARL
    1206.0
    [m]
    DC
    P-PARL
    1210.5
    [m]
    SWC
    P-PARL
    1212.0
    [m]
    DC
    P-PARL
    1215.0
    [m]
    DC
    P-PARL
    1219.0
    [m]
    DC
    P-PARL
    1221.0
    [m]
    DC
    P-PARL
    1224.0
    [m]
    DC
    P-PARL
    1228.5
    [m]
    SWC
    P-PARL
    1230.0
    [m]
    DC
    P-PARL
    1233.0
    [m]
    DC
    P-PARL
    1236.0
    [m]
    DC
    P-PARL
    1239.0
    [m]
    DC
    P-PARL
    1242.0
    [m]
    DC
    P-PARL
    1245.0
    [m]
    DC
    P-PARL
    1247.5
    [m]
    SWC
    P-PARL
    1251.0
    [m]
    DC
    P-PARL
    1255.5
    [m]
    SWC
    P-PARL
    1257.0
    [m]
    DC
    P-PARL
    1260.0
    [m]
    DC
    P-PARL
    1262.0
    [m]
    SWC
    P-PARL
    1265.5
    [m]
    SWC
    P-PARL
    1268.5
    [m]
    SWC
    P-PARL
    1272.5
    [m]
    SWC
    P-PARL
    1275.0
    [m]
    DC
    P-PARL
    1278.0
    [m]
    DC
    P-PARL
    1284.0
    [m]
    DC
    P-PARL
    1289.0
    [m]
    SWC
    P-PARL
    1296.0
    [m]
    DC
    P-PARL
    1299.0
    [m]
    DC
    P-PARL
    1302.0
    [m]
    DC
    P-PARL
    1305.0
    [m]
    DC
    P-PARL
    1308.0
    [m]
    DC
    P-PARL
    1312.0
    [m]
    SWC
    P-PARL
    1314.0
    [m]
    DC
    P-PARL
    1317.0
    [m]
    SWC
    P-PARL
    1319.0
    [m]
    SWC
    P-PARL
    1329.5
    [m]
    SWC
    P-PARL
    1332.5
    [m]
    SWC
    P-PARL
    1336.0
    [m]
    SWC
    P-PARL
    1338.5
    [m]
    SWC
    P-PARL
    1354.5
    [m]
    SWC
    P-PARL
    1374.0
    [m]
    DC
    P-PARL
    1389.0
    [m]
    DC
    P-PARL
    1405.5
    [m]
    SWC
    P-PARL
    1419.0
    [m]
    DC
    P-PARL
    1434.0
    [m]
    DC
    P-PARL
    1449.0
    [m]
    DC
    P-PARL
    1464.0
    [m]
    DC
    P-PARL
    1479.0
    [m]
    DC
    P-PARL
    1494.0
    [m]
    DC
    P-PARL
    1509.0
    [m]
    DC
    P-PARL
    1524.0
    [m]
    DC
    P-PARL
    1539.0
    [m]
    DC
    P-PARL
    1554.0
    [m]
    DC
    P-PARL
    1569.0
    [m]
    DC
    P-PARL
    1584.0
    [m]
    DC
    P-PARL
    1599.0
    [m]
    DC
    P-PARL
    1617.0
    [m]
    DC
    P-PARL
    1629.0
    [m]
    DC
    P-PARL
    1647.0
    [m]
    DC
    P-PARL
    1659.0
    [m]
    DC
    P-PARL
    1674.0
    [m]
    DC
    P-PARL
    1689.0
    [m]
    DC
    P-PARL
    1704.0
    [m]
    DC
    P-PARL
    1719.0
    [m]
    DC
    P-PARL
    1734.0
    [m]
    DC
    P-PARL
    1750.5
    [m]
    SWC
    P-PARL
    1764.0
    [m]
    DC
    P-PARL
    1779.0
    [m]
    DC
    P-PARL
    1801.0
    [m]
    SWC
    P-PARL
    1824.0
    [m]
    DC
    P-PARL
    1839.0
    [m]
    DC
    P-PARL
    1854.0
    [m]
    DC
    P-PARL
    1859.0
    [m]
    SWC
    P-PARL
    1869.0
    [m]
    SWC
    P-PARL
    1869.0
    [m]
    DC
    P-PARL
    1884.0
    [m]
    SWC
    P-PARL
    1910.5
    [m]
    SWC
    P-PARL
    1920.0
    [m]
    DC
    P-PARL
    1920.5
    [m]
    SWC
    P-PARL
    1950.0
    [m]
    DC
    P-PARL