Give whole or part of name of wellbore, licence, field, company, discovery etc. E.g. Aker, Statfjord, 24/12, ABP21014. The main content is not searched.
Official name of wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
24/9-13
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 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.
Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
24/9-13
Seismic location
Position of spud location on seismic survey lines. SP: shotpoint.
DN15M01 Inline 17256 Xline 9555
Drilling 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.
Aker BP ASA
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.
1733-L
Production licence at wellhead
Official designation of the production licence the wellbore was drilled or planned to be drilled from (wellhead posistion).
The active production licence of the planned drilling target of the wellbore. This can differ from the production licence the wellbore was drilled from.
Number of days from wellbore entry to wellbore completion.
31
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,
16.06.2019
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.
16.07.2019
Plugged date
Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).
16.07.2019
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.
16.07.2021
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.
10.11.2021
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.
GAS
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.
YES
1st 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.
EOCENE
1st 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.
HORDALAND GP
Kelly bushing elevation [m]
Elevation of the rotary kelly bushing (RKB) above mean sea level.
33.0
Water depth [m]
Depth in metres betweem mean sea level and sea floor.
117.7
Total depth (MD) [m RKB]
Total measured length of wellbore from kelly bushing to total depth (driller's depth).
2305.0
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).
2305.0
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.
PALEOCENE
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.
HEIMDAL FM
Geodetic datum
Reference system for coordinates. Example of legal values: ED50.
ED50
NS degrees
Geographic coordinate of the wellhead, north-south degrees.
59° 17' 51.89'' N
EW degrees
Geographic coordinate of the wellhead, east-west degrees.
1° 46' 2.45'' E
NS UTM [m]
Universal Transverse Mercator coordinate of the wellhead, north-south.
6574008.68
EW UTM [m]
Universal Transverse Mercator coordinate of the wellhead, east-west.
Well 24/9-13 was drilled to test the Rumpetroll prospect in the Vana Sub-basin in the North Sea, about 6 kilometres southwest of the Bøyla field. The primary objective was to prove petroleum in reservoir rocks (sand injectites) in the Eocene.
Operations and results
Wildcat well 24/9-13 was spudded with the semi-submersible installation Deepsea Nordkapp on 16 June 2019 and drilled to TD at 2305 m in the Paleocene Heimdal Formation. After reaching TD and gas was gas was discovered a planned technical side-track was initiated for coring and fluid samples. The side-track 24/9-13 ST2 was kicked off from 1724 m in the main bore and drilled to TD at 2176 m. The side-track was drilled close to vertical with an 18 m centre-to-
centre distance from the main bore at TD. Operations proceeded without significant problems. The main bore was drilled with KCl/polymer/GEM mud down to 1412 m and with Innovert oil-based mud from 1412 m to TD. The side-track was drilled with Innovert oil-based mud all through.
Well 24/9-13 encountered gas in the interval 1943.5 to 1946.6 m in the primary well bore, whereof a total of 2 metres of sandstone with mainly good reservoir quality. The same sandstone was partially cored in the side-track. Several intra-Balder Formation sandstone layers with mainly good reservoir quality were also encountered in the interval 2074 to 2122 m. Net sandstone in Balder is 17 m and petrophysical analyses indicated they could be oil-bearing. The Balder sands were not present in the side-track. The sandstones are interpreted as being remobilised sand from the Heimdal and Hermod formations and injected into overlying stratigraphy in the Rogaland and Hordaland groups. The Heimdal Formation sandstone was water-wet.
No fluid contacts could be established. An oil show was described on a core chip from the gas-bearing injectite sand in the side-track, otherwise there were no shows above the oil-based mud in main bore or side-track.
Four cores were attempted in the technical side-track. Of these, core 1 from 1936 to 1942 had no recovery due to junk in the core head, while core 2 from 1942 to 1969 m had 99% recovery, core 3 from 2072 to 2099 m had 101% recovery and core 4 from 2099 to 2127 had 101% recovery. Core 2 had one meter of sandstone from 1943 to 1944, otherwise all recovered core was claystone. RDT fluid samples were taken in the side-track at 1946.15 m (gas).
The well was permanently abandoned on 16 July 2019 as a gas discovery.
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