ÅRE FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.ÅRE FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.197Level Indicates the lithostratigraphic unit's level. Legal values: GROUP, FORMATION, MEMBER.FORMATIONLithostrat. unit, parent The parent lithostratigraphic unit's official name. See also level. Will be empty if Level = GROUP. -
Level below
Level below Lithostrat. unit -
Description
Åre Formation
NameFrom the Norwegian word for oar. This formation corresponds to the informal term Hitra Formation (“the coal sequence” or H1-1) together with the lower part of the Aldra Formation (H1-2).Well type section6507/12-1 (Saga Petroleum), coordinates 65°07'01.62"N, 07°42'42.61"E from 2920 m to 2412 m (Fig 4.7) . Two cores, 26.2 m recovery.Well reference section6407/1-2 (Statoil), coordinates 64°47'50.61"N, 07°02'23.76"E, from 4548 m to 4221 m (Fig 4.8) . No cores.Thickness508 m in the type well. Generally between 300 m and 500 m.LithologyAlternating sandstones and claystones are interbedded with coals and coaly claystones. The claystones are grayish or locally red brown and non-calcareous to very calcareous. The sandstones are grayish, very fine to coarse-grained and predominantly moderately to poorly sorted. The coals in the type well are dark brown to black, vitreous, brittle and locally pyritic.Basal StratotypeThe base is defined directly underneath the lowermost coal bed identified on the sonic log. In the type well the resistivity log increases slightly and changes to a somewhat less nervous pattern at the transition into the Åre Formation.Lateral extent and variationThe formation is present in all areas drilled in the Haltenbanken-Trænabanken region but seismic data indicate that it is truncated in positive areas such as the Nordland Ridge. The upper part of the formation contains a laterally continuous mudstone interval; this has a generally uniform thickness, but thins slightly to the north.AgeRhaetian to Pliensbachian.Depositional environmentCostal plain to delta plain deposits with swamps and channels pass upwards into marginal marine facies. Individual coals can be up to 8 m thick. More proximal lithofacies contain less coal and coarser sandstones. Shallow drilling to the east shows conglomerates which are probably laterally equivalent to the Åre Formation (Bugge et al. 1984).CorrelationThe formation is partially equivalent to the Statfjord Formation in the North Sea, to the combined upper Fruholmen , Tubåen and Nordmela formations in the Hammerfest Basin and to the Kap Stewart Formation of eastern Greenland. The Åre Formation has a lower sand content than the Statfjord Formation in the northern North Sea.Source-
Dalland, A., Worsley, D. and Ofstad, K. (eds.) 1988: A lithostratigraphic scheme for the Mesozoic and Cenozoic succession offshore mid- and northern Norway. NPD-Bulletin No. 4, 65 pp.
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Wellbores penetrating
Wellbores penetrating 28.12.20182433277510.06.20014996505709.04.19955188529207.01.19965186589227.03.19965291536703.03.20065285536115.04.19975210525815.02.19994950508029.09.19975396543907.11.19985204526323.05.20005205526305.05.20154331468014.08.19844380475822.11.19864496452326.10.19864404441619.09.20064473452005.04.20204533460031.08.20214862519009.07.20134373442011.04.19884895491002.06.20055024508001.07.20075241534818.02.19913985413415.05.19834220454816.01.19844150445506.08.19823345372331.07.19832892327523.01.19872910305002.09.20093311340813.05.20103148323005.09.20192430262815.11.19854500483526.10.19842457284816.02.19872902322013.12.19903027312627.05.20093179322707.04.19863017318321.01.19872878293430.04.19902880293618.05.19883014312828.03.19893139321115.02.19913496372516.12.20003882397520.09.20073712388614.09.20084981513805.11.20085145522716.10.20164717496020.09.20164068414325.11.19941728184727.05.19971935196016.06.20082424247321.05.20082724278826.05.20092731290520.10.20133035342009.12.20133351353712.05.20152830303023.05.20152927317807.09.19842073235725.05.19882139243919.06.19873155331907.12.20182042217518.10.19882323260307.12.20005302549115.09.20095572566428.04.20104699480527.08.20134656469231.03.19884662467926.10.19914705481306.06.19965022511010.11.19964692479022.08.19985260527527.07.20014927497803.09.20125282533006.02.19854437492413.08.19854414445727.03.19864510458702.08.19864735474110.09.19934837491026.06.19955024509711.12.19955711626007.09.19965211526801.02.19975211526801.09.20095430548106.08.20095496550829.09.19864135447716.03.19923810395814.07.20224929493726.10.19903976475727.04.19971274178025.03.19993680383030.04.20044047409208.05.20084216426523.06.20091422165022.07.20093785385516.08.20133406345515.08.20152435247011.08.20222126223021.08.20221672216103.05.19983688422423.09.19993855389715.04.20013774381214.02.20023925394824.06.20141447159815.10.20192169223027.09.20192086224330.12.20201796190326.04.20221791200423.08.19861013130716.07.19914014435424.11.20081590185029.01.20121040120916.11.20111042120810.06.19852482326218.09.19852720285006.09.19862369252502.08.19872787285529.10.19932759317108.01.20012391262321.01.20012390252209.12.19862559260009.09.19872123269020.09.19881542207513.08.19902124243509.10.19932275265620.04.20112327255422.08.20172121237523.04.20202203239924.11.20221989241631.10.19823226369310.02.20142950302010.12.19812596307430.05.19822290276115.08.19852825319308.07.20013387344003.07.20072701277318.04.20082910306926.10.19802412292024.11.19812193260513.09.19852351260029.08.19992714275011.07.20191515168724.05.19871981222910.10.19971945223621.12.19971945223625.10.20113935440426.12.20124271430613.10.20203863406213.10.20204077416029.05.19893218343729.01.19922819367811.03.19932791292117.08.19952791292106.03.19942697280006.08.19952792320014.05.20001873211502.12.20001873211529.08.20011868210823.05.20012018231912.04.20022403265218.02.20032228240007.08.20032567280021.12.20082770306025.01.20092934307507.11.20091281144201.04.20102592288012.09.20131934203013.06.20143993402513.08.19861233131824.11.20001736206415.12.20021530194023.05.20041668215314.07.20061550164106.08.20081630185024.10.20111657200021.06.20131823197029.08.19831733199303.10.20092142241807.07.19832735306828.09.19962278254111.12.19933935414707.10.19963937414919.06.19832855319314.03.19841533172603.02.20132657293024.11.201913871584 -
Wellbores with cores
Wellbores with cores 09.04.19959507.01.1996915.02.19999705.05.20151814.08.19841131.08.20211306.08.19821815.11.19851413.12.19901307.04.19868021.01.19873518.05.19888528.03.1989120.09.2007325.11.19941720.10.2013615.09.20094226.10.19911206.06.19966410.11.19962710.09.19931026.06.19957111.12.199513907.09.19962616.03.1992826.10.19902827.04.1997803.05.19981127.09.20197830.12.20201823.08.19862906.09.19868421.01.20016913.08.199017022.08.20172726.10.19802613.09.19851610.10.19971606.03.19941014.05.20008923.05.20018312.04.20023921.12.20089201.04.201013824.11.20002323.05.20043914.07.20061329.08.1983907.07.1983028.09.199630