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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7120/10-1

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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.
    7120/10-1
    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.
    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.
    7120/10-1
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    E 841 - 30 SP. 630
    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.
    Esso Exploration and Production Norway A/S
    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.
    429-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.
    30
    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,
    10.08.1984
    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.
    08.09.1984
    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.
    08.09.1986
    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.
    11.02.2005
    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.
    25.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    183.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    2000.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    8.5
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    71
    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.
    FRUHOLMEN FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    71° 3' 6.25'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    20° 16' 29.8'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    7883536.50
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    473722.27
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    34
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    274

  • Wellbore history
    General
    Wildcat well 7120/10-1 is located in the Troms I area in the southwestern part of the Hammerfest Basin, close to the Troms-Finnmark Fault Complex. The main objective of the well was to test the Middle to Early Jurassic sands of the B-prospect located in the south-eastern part of the block
    Operations and results
    The well was spudded with the semi-submersible installation Zapata Ugland on 10 September 1984 and drilled to TD at 2000 m in the Late Triassic. While drilling the 36" hole a boulder zone was encountered at 210 m to 248 m, which made it difficult to set the 30" casing. When pressure testing the seal assembly before drilling out of the 9 5/8" casing shoe, a leak was found in the well head connector. The leakage was repaired before drilling of the 8 1/2" hole section. The well was drilled using gel/seawater down to 534 m, with bentonite/CMC from 534 m to 1302 m, and with gel/lignosulphonate/seawater from 1302 m to TD.
    No hydrocarbons were encountered in the well. No potential reservoir sands were present above the Middle Jurassic. In the Middle Jurassic to Top Triassic interval a net 200 m of good quality potential reservoir sandstone was penetrated.
    One core was cut in the Middle Jurassic Stø Formation from 1570 m to 1584 m. Twenty-two RFT pressure readings were obtained from 1570 m to 1589 m, showing a saltwater pressure gradient. A fluid sample was taken at 1573.9 m. The sample contained mud filtrate without any gas or any smell or sign of hydrocarbons.
    The well was permanently abandoned on 8 September 1984 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]
    250.00
    1998.00

  • 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
    1570.0
    1583.5
    [m ]
    Cores at the Norwegian Offshore Directorate
    Total core sample length [m]
    13.5
    Cores at the Norwegian Offshore Directorate
    Cores available for sampling?
    YES

  • Core photos
    Core photos
    Core photo at depth: 1570-1576m
    Core photo at depth: 1576-1582m
    Core photo at depth: 1582-1583m
    Core photo at depth:  
    Core photo at depth:  
    1570-1576m
    1576-1582m
    1582-1583m

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    270.0
    [m]
    DC
    300.0
    [m]
    DC
    330.0
    [m]
    DC
    360.0
    [m]
    DC
    390.0
    [m]
    DC
    420.0
    [m]
    DC
    450.0
    [m]
    DC
    480.0
    [m]
    DC
    510.0
    [m]
    DC
    540.0
    [m]
    DC
    570.0
    [m]
    DC
    580.0
    [m]
    DC
    600.0
    [m]
    DC
    630.0
    [m]
    DC
    660.0
    [m]
    DC
    690.0
    [m]
    DC
    720.0
    [m]
    DC
    750.0
    [m]
    DC
    760.0
    [m]
    DC
    780.0
    [m]
    DC
    810.0
    [m]
    DC
    820.0
    [m]
    DC
    840.0
    [m]
    DC
    870.0
    [m]
    DC
    900.0
    [m]
    DC
    930.0
    [m]
    DC
    960.0
    [m]
    DC
    990.0
    [m]
    DC
    1020.0
    [m]
    DC
    1050.0
    [m]
    DC
    1080.0
    [m]
    DC
    1090.0
    [m]
    DC
    1110.0
    [m]
    DC
    1140.0
    [m]
    DC
    1170.0
    [m]
    DC
    1200.0
    [m]
    DC
    1210.0
    [m]
    DC
    1230.0
    [m]
    DC
    1240.0
    [m]
    DC
    1260.0
    [m]
    DC
    1290.0
    [m]
    DC
    1317.0
    [m]
    DC
    1331.0
    [m]
    SWC
    RRI
    1350.0
    [m]
    DC
    1360.0
    [m]
    SWC
    RRI
    1380.0
    [m]
    DC
    1398.0
    [m]
    SWC
    RRI
    1405.0
    [m]
    SWC
    RRI
    1410.0
    [m]
    DC
    1440.0
    [m]
    DC
    1442.0
    [m]
    SWC
    RRI
    1467.0
    [m]
    SWC
    1470.0
    [m]
    DC
    1500.0
    [m]
    DC
    1522.0
    [m]
    SWC
    1530.0
    [m]
    DC
    1537.0
    [m]
    SWC
    RRI
    1560.0
    [m]
    DC
    1590.0
    [m]
    DC
    1615.0
    [m]
    SWC
    RRI
    1620.0
    [m]
    DC
    1650.0
    [m]
    DC
    1680.0
    [m]
    DC
    1710.0
    [m]
    DC
    1740.0
    [m]
    DC
    1770.0
    [m]
    DC
    1800.0
    [m]
    DC
    1830.0
    [m]
    DC
    1860.0
    [m]
    DC
    1890.0
    [m]
    DC
    1893.0
    [m]
    SWC
    RRI
    1920.0
    [m]
    DC
    1926.0
    [m]
    SWC
    RRI
    1926.0
    [m]
    SWC
    RRI
    1940.0
    [m]
    SWC
    RRI
    1950.0
    [m]
    DC
    1956.0
    [m]
    DC
    1965.0
    [m]
    DC
    1980.0
    [m]
    DC
    1998.0
    [m]
    DC

  • Lithostratigraphy

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

  • Geochemical information
    Geochemical information
    Document name
    Document format
    Document size [MB]
    pdf
    0.63

  • 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
    9.65
    pdf
    17.86
    pdf
    1.47

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    CST
    1306
    1995
    ISF SLS GR CAL
    210
    1999
    LDL CNL GR CAL
    522
    2000
    RFT GR
    1570
    1989
    SHDT
    1302
    2000
    TEMP
    210
    1200
    VELOCITY
    900
    2000

  • 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
    244.0
    36
    257.0
    0.00
    LOT
    INTERM.
    13 3/8
    521.0
    17 1/2
    610.0
    0.00
    LOT
    INTERM.
    9 5/8
    1300.0
    12 1/4
    1317.0
    1.88
    LOT
    OPEN HOLE
    2000.0
    8 1/2
    2000.0
    0.00
    LOT

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    216
    1.00
    WATER BASED
    15.08.1984
    237
    1.00
    WATER BASED
    15.08.1984
    248
    1.00
    WATER BASED
    15.08.1984
    253
    1.12
    WATER BASED
    15.08.1984
    253
    1.06
    15.0
    23.9
    WATER BASED
    15.08.1984
    253
    1.06
    15.0
    23.9
    WATER BASED
    15.08.1984
    440
    1.09
    9.0
    5.3
    WATER BASED
    16.08.1984
    535
    1.10
    10.0
    4.8
    WATER BASED
    21.08.1984
    535
    1.10
    10.0
    4.8
    WATER BASED
    21.08.1984
    535
    1.10
    10.0
    4.8
    WATER BASED
    17.08.1984
    586
    1.15
    11.0
    12.9
    WATER BASED
    21.08.1984
    900
    1.18
    16.0
    7.7
    WATER BASED
    21.08.1984
    1196
    1.22
    13.0
    9.6
    WATER BASED
    21.08.1984
    1317
    1.22
    13.0
    12.9
    WATER BASED
    22.08.1984
    1317
    1.26
    13.0
    12.5
    WATER BASED
    23.08.1984
    1317
    1.26
    13.0
    12.5
    WATER BASED
    23.08.1984
    1350
    1.33
    12.0
    6.2
    WATER BASED
    06.09.1984
    1371
    1.26
    11.0
    5.3
    WATER BASED
    28.08.1984
    1501
    1.26
    14.0
    8.6
    WATER BASED
    29.08.1984
    1570
    1.30
    12.0
    6.7
    WATER BASED
    30.08.1984
    1584
    1.28
    11.0
    5.3
    WATER BASED
    31.08.1984
    1611
    1.34
    14.0
    8.6
    WATER BASED
    03.09.1984
    1816
    1.34
    13.0
    9.6
    WATER BASED
    03.09.1984
    1920
    1.36
    14.0
    7.7
    WATER BASED
    03.09.1984
    1961
    1.34
    14.0
    8.1
    WATER BASED
    04.09.1984

  • Thin sections at the Norwegian Offshore Directorate
    Thin sections at the Norwegian Offshore Directorate
    Depth
    Unit
    1570.00
    [m ]
    1571.00
    [m ]
    1572.00
    [m ]
    1573.00
    [m ]
    1574.00
    [m ]
    1576.00
    [m ]
    1578.00
    [m ]
    1580.00
    [m ]
    1581.00
    [m ]
    1583.00
    [m ]

  • Pressure plots
    Pressure plots
    The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.
    Pressure plots
    Document name
    Document format
    Document size [MB]
    pdf
    0.25