Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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26.11.2024 - 01:27
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34/7-35 S

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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.
    34/7-35 S
    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.
    34/7-35
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    3D survey: ST08M08-BIN-inline1632 & xline 5268
    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.
    1403-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.
    74
    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,
    08.05.2012
    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.
    22.07.2012
    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.
    22.07.2014
    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.
    03.12.2014
    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.
    22.0
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    262.0
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    4393.0
    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).
    3710.0
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    57.7
    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.
    MIDDLE JURASSIC
    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.
    NESS FM
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    ED50
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    61° 18' 3.84'' N
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    2° 12' 18.95'' E
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    6796743.09
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    457422.05
    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.
    6881

  • Wellbore history
    General
    Well 34/7-35 S was drilled on Tampen Spur in the northern North Sea, just north of the Gullfaks field. The objectives of the well was to test the presence of oil in Intra Draupne Formation sandstone (Karpe prospect) and in Brent Group sandstones (Svarthå prospect).
    Operations and results
    Because of a shallow gas warning, a pilot hole 34/7-U-19 was spudded 22 m east from the main hole location and drilled to 1120 m in the Hordaland Group. No indication of shallow gas was observed on LWD or by the ROV.
    Wildcat well 34/7-35 S was spudded with the semi-submersible installation Ocean Vanguard on 8 May 2012. The well was first drilled to a total depth of 4158 m. When pulling out the BHA was stuck at 4094 m. The drill string was cut at 3942 m, but attempts to fish the BHA were unsuccessful and the well was side tracked from 3506 m as 34/7-35 ST2. The sidetrack was drilled to final TD at 4393 m (3710 m TVD) in the Middle Jurassic Ness Formation. The well is vertical down to 2100 m and reach a ca 55 deg sailing angle at 3040 m. The well was drilled with seawater down to 1104 m, with Performadril mud from 1104 m to 2015 m, and with XP-07 oil based mud from 2015 m to final TD.
    Some hydrocarbons shows were observed in sandstone from 1371 to 1385 m the Hordaland Group and in thin sandstones between 1920 and 1950 m in the Sele/Lista Formations. Both shows zones were associated to clear resistivity peaks over the sandstones. Top Draupne was encountered at 3152 m (2991.8 m TVD) and top Brent Group, Tarbert Formation, at 4276 m (3635.4 m TVD). Several thin sand bodies were drilled within the Draupne Formation and some thick sandstones were found in the Heather Formation, but with no indications of hydrocarbons. The Tarbert Formation was water-filled and with poor reservoir properties.
    No cores were cut and no wire line fluid samples were taken.
    The well was permanently abandoned on 22 July 2012 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]
    1110.00
    4155.00

  • Palynological slides at the Norwegian Offshore Directorate
    Palynological slides at the Norwegian Offshore Directorate
    Sample depth
    Depth unit
    Sample type
    Laboratory
    1120.0
    [m]
    DC
    PETROSTR
    1140.0
    [m]
    DC
    PETROS
    1160.0
    [m]
    DC
    PETROS
    1180.0
    [m]
    DC
    PETROS
    1200.0
    [m]
    DC
    PETROS
    1220.0
    [m]
    DC
    PETROS
    1240.0
    [m]
    DC
    PETROS
    1260.0
    [m]
    DC
    PETROS
    1280.0
    [m]
    DC
    PETROS
    1300.0
    [m]
    DC
    PETROS
    1320.0
    [m]
    DC
    PETROS
    1340.0
    [m]
    DC
    PETROS
    1360.0
    [m]
    DC
    PETROS
    1380.0
    [m]
    DC
    PETROS
    1400.0
    [m]
    DC
    PETROS
    1420.0
    [m]
    DC
    PETROS
    1440.0
    [m]
    DC
    PETROS
    1460.0
    [m]
    DC
    PETROS
    1480.0
    [m]
    DC
    PETROS
    1500.0
    [m]
    DC
    PETROS
    1520.0
    [m]
    DC
    PETROS
    1540.0
    [m]
    DC
    PETROS
    1560.0
    [m]
    DC
    PETROS
    1580.0
    [m]
    DC
    PETROS
    1600.0
    [m]
    DC
    PETROS
    1620.0
    [m]
    DC
    PETROS
    1640.0
    [m]
    DC
    PETROS
    1660.0
    [m]
    DC
    PETROS
    1680.0
    [m]
    DC
    PETROS
    1700.0
    [m]
    DC
    PETROS
    1720.0
    [m]
    DC
    PETROS
    1740.0
    [m]
    DC
    PETROS
    1760.0
    [m]
    DC
    PETROS
    1780.0
    [m]
    DC
    PETROS
    1800.0
    [m]
    DC
    PETROS
    1820.0
    [m]
    DC
    PETROS
    1840.0
    [m]
    DC
    PETROS
    1860.0
    [m]
    DC
    PETROS
    1880.0
    [m]
    DC
    PETROS
    1900.0
    [m]
    DC
    PETROS
    1920.0
    [m]
    DC
    PETROS
    1940.0
    [m]
    DC
    PETROS
    1960.0
    [m]
    DC
    PETROS
    1980.0
    [m]
    DC
    PETROS
    2010.0
    [m]
    DC
    PETROS
    2020.0
    [m]
    DC
    PETROS
    2040.0
    [m]
    DC
    PETROS
    2060.0
    [m]
    DC
    PETROS
    2080.0
    [m]
    DC
    PETROS
    2100.0
    [m]
    DC
    PETROS
    2120.0
    [m]
    DC
    PETROS
    2140.0
    [m]
    DC
    PETROS
    2160.0
    [m]
    DC
    PETROS
    2180.0
    [m]
    DC
    PETROS
    2200.0
    [m]
    DC
    PETROS
    2220.0
    [m]
    DC
    PETROS
    2240.0
    [m]
    DC
    PETROS
    2260.0
    [m]
    DC
    PETROS
    2280.0
    [m]
    DC
    PETROS
    2300.0
    [m]
    DC
    PETROS
    2320.0
    [m]
    DC
    PETROS
    2340.0
    [m]
    DC
    PETROS
    2360.0
    [m]
    DC
    PETROS
    2380.0
    [m]
    DC
    PETROS
    2400.0
    [m]
    DC
    PETROS
    2420.0
    [m]
    DC
    PETROS
    2440.0
    [m]
    DC
    PETROS
    2460.0
    [m]
    DC
    PETROS
    2480.0
    [m]
    DC
    PETROS
    3520.0
    [m]
    DC
    PETROS
    3540.0
    [m]
    DC
    PETROS
    3560.0
    [m]
    DC
    PETROS
    3580.0
    [m]
    DC
    PETROS
    3600.0
    [m]
    DC
    PETROS
    3620.0
    [m]
    DC
    PETROS
    3640.0
    [m]
    DC
    PETROS
    3660.0
    [m]
    DC
    PETROS
    3665.0
    [m]
    DC
    PETROS
    3675.0
    [m]
    DC
    PETROS
    3680.0
    [m]
    DC
    PETROS
    3685.0
    [m]
    DC
    PETROS
    3695.0
    [m]
    DC
    PETROS
    3700.0
    [m]
    DC
    PETROS
    3705.0
    [m]
    DC
    PETROS
    3715.0
    [m]
    DC
    PETROS
    3720.0
    [m]
    DC
    PETROS
    3725.0
    [m]
    DC
    PETROS
    3735.0
    [m]
    DC
    PETROS
    3740.0
    [m]
    DC
    PETROS
    3745.0
    [m]
    DC
    PETROS
    3755.0
    [m]
    DC
    PETROS
    3760.0
    [m]
    DC
    PETROS
    3770.0
    [m]
    DC
    PETROS
    3780.0
    [m]
    DC
    PETROS
    3780.0
    [m]
    DC
    PETROS
    3790.0
    [m]
    DC
    PETROS
    3800.0
    [m]
    DC
    PETROS
    3810.0
    [m]
    DC
    PETROS
    3820.0
    [m]
    DC
    PETROS
    3830.0
    [m]
    DC
    PETROS
    3840.0
    [m]
    DC
    PETROS
    3845.0
    [m]
    DC
    PETROS
    3850.0
    [m]
    DC
    PETROS
    3855.0
    [m]
    DC
    PETROS
    3860.0
    [m]
    DC
    PETROS
    3865.0
    [m]
    DC
    PETROS
    3870.0
    [m]
    DC
    PETROS
    3875.0
    [m]
    DC
    PETROS
    3880.0
    [m]
    DC
    PETROS
    3885.0
    [m]
    DC
    PETROS
    3890.0
    [m]
    DC
    PETROS
    3895.0
    [m]
    DC
    PETROS
    3900.0
    [m]
    DC
    PETROS
    3905.0
    [m]
    DC
    PETROS
    3910.0
    [m]
    DC
    PETROS
    3915.0
    [m]
    DC
    PETROS
    3920.0
    [m]
    DC
    PETROS
    3925.0
    [m]
    DC
    PETROS
    3930.0
    [m]
    DC
    PETROS
    3935.0
    [m]
    DC
    PETROS
    3940.0
    [m]
    DC
    PETROS
    3945.0
    [m]
    DC
    PETROS
    3950.0
    [m]
    DC
    PETROS
    3955.0
    [m]
    DC
    PETROS
    3960.0
    [m]
    DC
    PETROS
    3965.0
    [m]
    DC
    PETROS
    3975.0
    [m]
    DC
    PETROS
    3985.0
    [m]
    DC
    PETROS
    3995.0
    [m]
    DC
    PETROS
    4005.0
    [m]
    DC
    PETROS
    4015.0
    [m]
    DC
    PETROS
    4025.0
    [m]
    DC
    PETROS
    4035.0
    [m]
    DC
    PETROS
    4045.0
    [m]
    DC
    PETROS
    4055.0
    [m]
    DC
    PETROS
    4065.0
    [m]
    DC
    PETROS
    4075.0
    [m]
    DC
    PETROS
    4085.0
    [m]
    DC
    PETROS
    4095.0
    [m]
    DC
    PETROS
    4100.0
    [m]
    DC
    PETROS
    4105.0
    [m]
    DC
    PETROS
    4115.0
    [m]
    DC
    PETROS
    4125.0
    [m]
    DC
    PETROS
    4135.0
    [m]
    DC
    PETROS
    4140.0
    [m]
    DC
    PETROS
    4145.0
    [m]
    DC
    PETROS
    4150.0
    [m]
    DC
    PETROS
    4155.0
    [m]
    DC
    PETROS
    4165.0
    [m]
    DC
    PETROS
    4175.0
    [m]
    DC
    PETROS
    4185.0
    [m]
    DC
    PETROS
    4195.0
    [m]
    DC
    PETROS
    4205.0
    [m]
    DC
    PETROS
    4215.0
    [m]
    DC
    PETROS
    4225.0
    [m]
    DC
    PETROS
    4230.0
    [m]
    DC
    PETROS
    4245.0
    [m]
    DC
    PETROS
    4250.0
    [m]
    DC
    PETROS
    4255.0
    [m]
    DC
    PETROS
    4260.0
    [m]
    DC
    PETROS
    4265.0
    [m]
    DC
    PETROS
    4270.0
    [m]
    DC
    PETROS
    4275.0
    [m]
    DC
    PETROS
    4280.0
    [m]
    DC
    PETROS
    4285.0
    [m]
    DC
    PETROS
    4290.0
    [m]
    DC
    PETROS
    4295.0
    [m]
    DC
    PETROS
    4300.0
    [m]
    DC
    PETROS
    4305.0
    [m]
    DC
    PETROS
    4310.0
    [m]
    DC
    PETROS
    4315.0
    [m]
    DC
    PETROS
    4320.0
    [m]
    DC
    PETROS
    4325.0
    [m]
    DC
    PETROS
    4330.0
    [m]
    DC
    PETROS
    4335.0
    [m]
    DC
    PETROS
    4340.0
    [m]
    DC
    PETROS
    4345.0
    [m]
    DC
    PETROS
    4350.0
    [m]
    DC
    PETROS
    4355.0
    [m]
    DC
    PETROS
    4360.0
    [m]
    DC
    PETROS
    4365.0
    [m]
    DC
    PETROS
    4370.0
    [m]
    DC
    PETROS
    4375.0
    [m]
    DC
    PETROS
    4380.0
    [m]
    DC
    PETROS
    4385.0
    [m]
    DC
    PETROS
    4390.0
    [m]
    DC
    PETROS

  • Lithostratigraphy

  • Logs
    Logs
    Log type
    Log top depth [m]
    Log bottom depth [m]
    MWD - ARCVRES9 TELE
    352
    1104
    MWD - PDEXCEED6 ARCRES6 TELE-
    3076
    4158
    MWD - PDX5 ARCVRES8 TELE
    2015
    3076
    MWD - PDX5 ARCVRES9 TELE
    1104
    2015
    MWD - STET SONVIS6 ADN6
    3076
    4158
    MWD - TELE
    284
    352
    USIT CBL VDL GR
    1155
    1915
    USIT CBL VDL GR GYRO
    2493
    3018

  • 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
    347.0
    36
    351.0
    0.00
    PILOT HOLE
    351.0
    9 7/8
    351.0
    0.00
    SURF.COND.
    20
    1094.0
    26
    1104.0
    1.53
    FIT
    INTERM.
    13 3/8
    2005.0
    17 1/2
    2015.0
    1.83
    LOT
    LINER
    9 5/8
    3974.0
    12 1/4
    3076.0
    1.76
    FIT
    OPEN HOLE
    4393.0
    8 1/2
    4393.0
    0.00

  • Drilling mud
    Drilling mud
    Depth MD [m]
    Mud weight [g/cm3]
    Visc. [mPa.s]
    Yield point [Pa]
    Mud type
    Date measured
    790
    1.42
    33.0
    Performadril
    1095
    1.43
    35.0
    Performadril
    1104
    1.30
    26.0
    Performadril
    1104
    1.35
    4.0
    Spud Mud
    1250
    1.43
    41.0
    Performadril
    1462
    1.62
    45.0
    XP-07 - #14
    1465
    1.30
    25.0
    Performadril
    1780
    1.43
    29.0
    Performadril
    2015
    1.50
    24.0
    XP-07 - #14
    2453
    1.50
    23.0
    XP-07 - #14
    2934
    1.60
    33.0
    XP-07 - #14
    3076
    1.52
    24.0
    XP-07 - #14
    3282
    1.58
    24.0
    XP-07 - #14
    3690
    1.60
    30.0
    XP-07 - #14
    4156
    1.55
    30.0
    XP-07 - #14
    4158
    1.55
    23.0
    XP-07 - #14
    4306
    1.60
    29.0
    XP-07 - #14
    4393
    1.60
    29.0
    XP-07 - #14