15/3-12 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.15/3-12 SType Wellbore type. Legal values: EXPLORATION, DEVELOPMENT, OTHER (see 'Purpose' for more information)EXPLORATIONPurpose 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).WILDCATStatus 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 top-hole drilling campaign covering several wellbores.
RE-CLASS TO DEV: Exploration wellbore that is reclassified to a development wellbore and given a new name.
RE-CLASS TO TEST: Exploration wellbore that is reclassified to test production and given a new name.
SUSPENDED: The drilling operation in the wellbore has been temporarily stopped. The current plan is to continue drilling later on.
WILL NEVER BE DRILLED: Wellbore registered with a name and WellID by the Norwegian Offshore Directorate, but which for various reasons will not be drilled.
ONLINE/OPERATIONAL: The wellbore is ongoing, but not completed, may be operations such as drilling, batch-drilling, logging, testing, plugging, preparation for production/injection or temporarily stopped in connection with the operations.
P&APress releaseFactmaps in new windowMain area Name of the area on the Norwegian Continental Shelf where the wellbore is located. Legal values: BARENTS SEA, NORWEGIAN SEA, NORTH SEA.NORTH SEADiscovery Name of the discovery the wellbore is related to.Well name Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.15/3-12Seismic location Position of spud location on seismic survey lines. SP: shotpoint.PGS16M04-PGS16910VIKDrilling operator Name of the licensee starting the drilling operation on behalf of the active production license. This is usually the operator of the production license.Equinor Energy ASDrill 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.1797-LProduction licence at wellhead Official designation of the production licence the wellbore was drilled or planned to be drilled from (wellhead posistion).Prod. licence for drilling target The active production licence of the planned drilling target of the wellbore. This can differ from the production licence the wellbore was drilled from.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.49Entered date The date when he wellbore was spudded. For sidetracks: The date when new formation was drilled by kicking off from the mother-wellbore.03.12.2019Completed 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.20.01.2020Plugged date Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).20.01.2020Release 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.20.01.2022Publication 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.08.08.2022Purpose – 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.WILDCATReentry 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.NOContent 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.OILDiscovery 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.YES1st level with HC, age Age of lithostratigraphic unit, 1st level, where hydrocarbons were encountered. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EOCENE. See also Norwegian Offshore Directorate bulletins.MIDDLE JURASSIC1st level with HC, formation Name of lithostartigraphic unit, 1st level, where hydrocarbons were encountered. Shown only for released wells. Examples of legal values: BASEMENT, COOK FM, EKOFISK FM, HEIMDAL FM, SANDNES FM, SOGNEFJORD FM, TARBERT FM, BRENT GP. See also Norwegian Offshore Directorate bulletins.HUGIN FMKelly bushing elevation [m] Elevation of the rotary kelly bushing (RKB) above mean sea level.38.6Water depth [m] Depth in metres betweem mean sea level and sea floor.109.0Total depth (MD) [m RKB] Total measured length of wellbore from kelly bushing to total depth (driller's depth).3810.0Final 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).3691.0Oldest 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 JURASSICOldest 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.SLEIPNER FMGeodetic datum Reference system for coordinates. Example of legal values: ED50.ED50NS degrees Geographic coordinate of the wellhead, north-south degrees.58° 46' 53.25'' NEW degrees Geographic coordinate of the wellhead, east-west degrees.1° 54' 13.44'' ENS UTM [m] Universal Transverse Mercator coordinate of the wellhead, north-south.6516386.03EW UTM [m] Universal Transverse Mercator coordinate of the wellhead, east-west.436616.94UTM zone Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.31NPDID wellbore Norwegian Offshore Directorate's unique id for the wellbore.8947 -
Wellbore history
GeneralWell 15/3-12 S was drilled to test the Sigrun East Hugin prospect on the Gudrun Terrace in the North Sea. The primary and secondary exploration targets for wildcat well 15/3-12 S were to prove petroleum in Middle Jurassic Hugin Formation reservoir rocks.Operations and resultsWildcat well 15/3-12 S was spudded with the semi-submersible installation West Phoenix on 3 December 2019 and drilled to TD at 3810 m (3691 m TVD) m in the Middle Jurassic Sleipner Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1010 m, with Glydril mud from 1010 m to 2374 m, and with Exploradrill oil-based mud from 2374 m to TD.The well encountered three separate oil-filled reservoir zones from 3647 to 3660 m, 3680 to 3683 m, and 3703 to 3733 m in the Hugin Formation. The three zones lie on different pressure gradients. The reservoir zones mainly have moderate reservoir quality. The oil/water contacts were not penetrated in the well. Oil shows in the well were observed only in the Hugin Formation between 3652 to 3729 m.Two cores were cut with 100% recovery in the Hugin and Sleipner formations. Core 1 was cut from 3652 to 3706 m and core 2 was cut from 3706 to 3760 m. The core-log depth shifts are 1.9 m for core 1 and 1.7 m for core 2. MDT fluid samples were taken at 3647.5 m (oil), 3681.1 m (oil), 3698 m (water), and 3704.2 m (oil).The well was permanently abandoned on 14 January 2020 as an oil discovery.TestingNo drill stem test was performed. -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?YESCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]1020.003809.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample – top depthCore sample – bottom depthCore sample depth – uom13652.03705.9[m ]23706.03760.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]108.2Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1030.0[m]DCPETROSTR1060.0[m]DCPETROSTR1090.0[m]DCPETROSTR1120.0[m]DCPETROSTR1150.0[m]DCPETROSTR1180.0[m]DCPETROSTR1210.0[m]DCPETROSTR1240.0[m]DCPETROSTR1270.0[m]DCPETROSTR1330.0[m]DCPETROSTR1360.0[m]DCPETROSTR1390.0[m]DCPETROSTR1420.0[m]DCPETROSTR1450.0[m]DCPETROSTR1480.0[m]DCPETROSTR1510.0[m]DCPETROSTR1540.0[m]DCPETROSTR1570.0[m]DCPETROSTR1600.0[m]DCPETROSTR1630.0[m]DCPETROSTR1660.0[m]DCPETROSTR1690.0[m]DCPETROSTR1720.0[m]DCPETROSTR1750.0[m]DCPETROSTR1780.0[m]DCPETROSTR1810.0[m]DCPETROSTR1840.0[m]DCPETROSTR1870.0[m]DCPETROSTR1900.0[m]DCPETROSTR1930.0[m]DCPETROSTR1960.0[m]DCPETROSTR1990.0[m]DCPETROSTR2020.0[m]DCPETROSTR2050.0[m]DCPETROSTR2080.0[m]DCPETROSTR2110.0[m]DCPETROSTR2140.0[m]DCPETROSTR2170.0[m]DCPETROSTR2200.0[m]DCPETROSTR2230.0[m]DCPETROSTR2260.0[m]DCPETROSTR2270.0[m]DCPETROSTR2280.0[m]DCPETROSTR2290.0[m]DCPETROSTR2300.0[m]DCPETROSTR2310.0[m]DCPETROSTR2320.0[m]DCPETROSTR2330.0[m]DCPETROSTR2340.0[m]DCPETROSTR2350.0[m]DCPETROSTR2360.0[m]DCPETROSTR2370.0[m]DCPETROSTR2374.0[m]DCPETROSTR2380.0[m]DCPETROSTR2390.0[m]DCPETROSTR2400.0[m]DCPETROSTR2410.0[m]DCPETROSTR2420.0[m]DCPETROSTR2430.0[m]DCPETROSTR2440.0[m]DCPETROSTR2450.0[m]DCPETROSTR2460.0[m]DCPETROSTR2470.0[m]DCPETROSTR2480.0[m]DCPETROSTR2490.0[m]DCPETROSTR2500.0[m]DCPETROSTR2510.0[m]DCPETROSTR2520.0[m]DCPETROSTR2530.0[m]DCPETROSTR2540.0[m]DCPETROSTR2550.0[m]DCPETROSTR2560.0[m]DCPETROSTR2570.0[m]DCPETROSTR2580.0[m]DCPETROSTR2590.0[m]DCPETROSTR2600.0[m]DCPETROSTR2610.0[m]DCPETROSTR2620.0[m]DCPETROSTR2630.0[m]DCPETROSTR2640.0[m]DCPETROSTR2650.0[m]DCPETROSTR2660.0[m]DCPETROSTR2670.0[m]DCPETROSTR2680.0[m]DCPETROSTR2690.0[m]DCPETROSTR2700.0[m]DCPETROSTR2710.0[m]DCPETROSTR2720.0[m]DCPETROSTR2730.0[m]DCPETROSTR2740.0[m]DCPETROSTR2750.0[m]DCPETROSTR2760.0[m]DCPETROSTR2770.0[m]DCPETROSTR2780.0[m]DCPETROSTR2790.0[m]DCPETROSTR2800.0[m]DCPETROSTR2830.0[m]DCPETROSTR2860.0[m]DCPETROSTR2890.0[m]DCPETROSTR2920.0[m]DCPETROSTR2980.0[m]DCPETROSTR3010.0[m]DCPETROSTR3040.0[m]DCPETROSTR3070.0[m]DCPETROSTR3100.0[m]DCPETROSTR3130.0[m]DCPETROSTR3160.0[m]DCPETROSTR3190.0[m]DCPETROSTR3220.0[m]DCPETROSTR3250.0[m]DCPETROSTR3280.0[m]DCPETROSTR3310.0[m]DCPETROSTR3340.0[m]DCPETROSTR3370.0[m]DCPETROSTR3400.0[m]DCPETROSTR3420.0[m]DCPETROSTR3430.0[m]DCPETROSTR3440.0[m]DCPETROSTR3450.0[m]DCPETROSTR3460.0[m]DCPETROSTR3470.0[m]DCPETROSTR3480.0[m]DCPETROSTR3490.0[m]DCPETROSTR3496.0[m]DCPETROSTR3509.0[m]DCPETROSTR3515.0[m]DCPETROSTR3521.0[m]DCPETROSTR3527.0[m]DCPETROSTR3533.0[m]DCPETROSTR3539.0[m]DCPETROSTR3545.0[m]DCPETROSTR3551.0[m]DCPETROSTR3557.0[m]DCPETROSTR3563.0[m]DCPETROSTR3572.0[m]DCPETROSTR3575.0[m]DCPETROSTR3581.0[m]DCPETROSTR3587.0[m]DCPETROSTR3593.0[m]DCPETROSTR3599.0[m]DCPETROSTR3602.0[m]DCPETROSTR3605.0[m]DCPETROSTR3611.0[m]DCPETROSTR -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit14873696611691726225422652265234424082531266326732769280130343133334033533428342834733512357335733603364736473749 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]AIT PEX HNGS XPT34943810MDT36473647MDT36813720MWD - GR RES APWD DI1983760MWD - GR RES SON APWD DI23743496SS QGEO33003810XPT CMR35003810 -
Casing and leak–off tests
Casing and leak–off tests Casing typeCasing diam.
[inch]Casing depth
[m]Hole diam.
[inch]Hole depth
[m]LOT/FIT mud eqv.
[g/cm3]Formation test typeCONDUCTOR36196.042196.00.00SURF.COND.201003.0261003.01.55FITINTERM.142365.017 1/22365.01.65LOTLINER9 7/83495.012 1/43495.01.99LOTLINER9 7/83605.012 1/43605.01.90FITOPEN HOLE3810.08 1/23810.00.00
