SOGNEFJORD FM
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Generell informasjon
Generell informasjon Attributt Verdi Litostrat. enhet Den litostratigrafiske enhetens offisielle navn.SOGNEFJORD FMNPDID for litostrat. enhet Sokkeldirektoratets entydige nøkkel for litostratigrafiske enheter.151Nivå Angir den litostratigrafiske enhetens nivå. Lovlige verdier: GROUP, FORMATION, MEMBER.FORMATIONLitostrat. enhet, forelder Den litostratigrafiske enhetens offisielle navn, refererer til forelder. Se også nivå. Vil være tom hvis Nivå = GROUP. -
Nivå under
Nivå under Litostrat. enhet -
Beskrivelse
Sognefjord Formation
NameAfter a fjord on the west coast of Norway, adjacent to the type area in Quadrant 31.Well type sectionNorwegian well 31/2-1 (Shell) from 1440 m to 1531.5 m, coord N 60°46' 19.16", E 03°33'15.87", (Fig 3.21) .Well reference sectionNone at present.LithologyThe formation consists of sandstones and sands, grey-brown in colour, medium to coarse grained, well sorted and friable to unconsolidated. Locally the formation is weakly micaceous with minor argillaceous and carbonaceous beds. Bioclastic material and occasional cemented bands occur locally.BoundariesThe Sognefjord Formation has a gradational lower boundary, due to the interdigitation of sandstones with the siltstones which form the upper part of the Heather Formation . The base is chosen immediately below the first continuous sandstone, often shown by reduction in gamma ray intensity. The formation has a homogenous "blocky" log motif in the lower half. The upper half comprises several cycles displaying "funnel-shaped" gamma ray log motifs coincident with coarsening upward sequences. The top of the formation is marked by the distinct lithological break into claystones or shales, which in the type well are the overlying Draupne Formation .DistributionThe formation has only been clearly recognized in the Troll Field area, where it is the major reservoir interval.AgeOxfordian to Kimmeridgian/Volgian.Depositional environmentThe formation was deposited in a coastal-shallow marine environment.Source-
Vollset, J. and Doré, A. G. (eds.) 1984: A revised Triassic and Jurassic lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 3, 53 pp.
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Brønnbaner som penetrerer
Brønnbaner som penetrerer 21.08.20092283233815.02.20082055206809.11.19791440153209.11.19811441153323.04.19801545166506.10.19801545166520.07.19801384150806.04.19811365146012.11.19821365146021.12.19801536161720.07.19811529161022.04.19841529161017.10.19811492167314.06.19821546160118.08.19821837199901.10.19821549160031.10.19821600173325.05.19831558161109.09.19831365148715.03.19841732185521.06.19841533159515.11.19841515155927.12.19891659239008.07.19911660239131.01.19921689175614.02.19921691183824.02.19931696184320.01.19921872195707.10.19921529164317.10.19921530165508.12.20022673288704.06.20142192256216.03.20212051211716.03.20212157220703.03.20211907198003.03.20211995206113.10.19831352149730.04.19841567170618.11.19841753190505.01.20141658166911.05.19802018208217.02.19812365240229.07.19812070207813.12.19952025209812.09.20002201223314.03.20052089212511.11.19831521164230.08.19841521164209.06.19841555166613.12.19901621260318.07.19911621260305.09.20031628261010.10.19901619183011.02.19931572166027.07.20021579166725.07.20001798186206.03.20201957210428.10.19831352148811.12.19831460162508.09.19841460162526.12.19831511166921.05.19841518167729.07.19841561170625.05.19851507166122.09.19851507166122.06.20162154223014.07.20162371247827.07.20172579269208.07.20172190229218.01.20192726281016.12.20182573263324.07.20112123236728.06.20212317241201.07.2008902101204.12.19961238130626.10.20191248141510.08.19993639371903.04.19912109213226.12.20142950295709.09.19893081309629.12.19901984211627.01.19921994212603.11.19912875295020.04.19923157319629.09.19921796196411.05.19962807282501.05.19972556258023.06.19971971211714.07.19972293245718.03.20143416355401.05.20142145218407.08.20163869390115.09.20164131417619.06.20163362343217.10.20182281232004.06.20213007305104.06.20213091314314.05.20212896298514.05.20213078312724.04.19922557266715.07.20091968203016.02.20112046216419.06.20153007301907.05.19962171220722.09.199791793628.12.199728922920 -
Brønnbaner med kjerner
Brønnbaner med kjerner 09.11.19795523.04.19807720.07.19807606.04.19817521.12.19807017.10.198112414.06.19823918.08.19824601.10.19824431.10.198212425.05.19833809.09.19838615.03.19847921.06.19844315.11.19844231.01.19924214.02.1992320.01.19928007.10.199211003.03.202111913.10.198313930.04.19846318.11.198413929.07.1981813.12.19957312.09.20003111.11.19837609.06.19846610.10.19908811.02.19938228.10.198312211.12.198315626.12.198313721.05.198415429.07.198414125.05.198513122.06.20166514.07.20165527.07.20177708.07.20178316.12.20184704.12.19962303.04.19911926.12.2014109.09.1989429.12.19909320.04.19923129.09.19928823.06.199710207.08.20163117.10.20183924.04.1992715.07.20095416.02.20113207.05.199636