KROSSFJORD FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.KROSSFJORD FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.87Level 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
Krossfjord 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 1741.5 m to 1880 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, light grey-brown in colour, medium to coarse grained, well sorted, and loose to very friable. Occasionally calcite cemented streaks occur. The lower portion of the Krossfjord Formation is slightly argillaceous and carbonaceous with minor shale intercalations.BoundariesIn the type well the formation overlies the lower part of the Heather Formation . It has a "blocky" log character and is the first continuous thick sandstone unit above the Brent Group . The base of the formation is shown by the underlying reduction in gamma-ray intensity and FDC-CNL separation. The top is characterized by the change to the serrate gamma ray log motif of the overlying Fensfjord Formation and an overall upward increase in gamma ray intensity.DistributionAgeBathonian.Depositonal 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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Wellbores penetrating
Wellbores penetrating 21.08.20092678271709.11.19791742188009.11.19811743188123.04.19801848185706.10.19801848196120.07.19801677175506.04.19811625171012.11.19821625171021.12.19801789186020.07.19811782185322.04.19841782185318.08.19822254226617.10.19921916200508.12.20023148325213.10.19831668177930.04.19841851192918.11.19842077213405.01.20141996201013.12.19952270227812.09.20002522253811.11.19831826190830.08.19841826190809.06.19841848190511.02.19931855193027.07.20021862193725.07.20002056211206.03.20202278238228.10.19831720177611.12.19831875191008.09.19841875191026.12.19831756193221.05.19841937197229.07.19841947197625.05.19851927196522.09.19851927196524.07.20112498262928.06.20212678272101.07.20081115118704.12.19961598164526.10.20191551164507.05.19892099214027.07.19892099214003.04.19912481251207.02.20103376353118.11.20132848294306.08.19842233246915.07.20092232223716.02.20112594271619.06.20153230328930.01.20223097313007.05.199625102560 -
Wellbores with cores