BROOM FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.BROOM FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.17Level 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
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Description
Broom Formation
NameNamed by Deegan and Scull (1977) who gave it "sub-unit" status.Well type sectionWell reference sectionNorwegian well 33/9-1 (Mobil) from 2664 m to 2668 m, coord N 61°15'07.5", E 01°50'25.8" (Fig 3.11) .Thickness11 m in the type well and 4 m in 33/9-1 . In the Brent-Statfjord area it varies from a few meters to about fifteen meters in thickness.LithologyIn the type well it is a pale grey to brown, coarse-grained poorly sorted conglomeratic sandstone containing shale clasts.BoundariesThe Broom Formation is distinguished from the underlying Dunlin Group and the overlying Rannoch Formation by its irregular, but generally lower, gamma ray readings.DistributionThe Broom Formation is easily identified in the Brent - Statfjord area. In parts of the East Shetland Basin a thin distal equivalent of the Broom Formation is present within the shales of the Drake Formation .AgeLate Toarcian to Bajocian.Depositional environmentThe Broom Formation is a shallow marine deposit, and is a precursor of the regression which characterizes the overlying Rannoch Formation .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 09.05.19824489450024.02.19844415442103.06.19784051405702.01.19973764377704.06.19742664266824.12.19872810281509.04.19882947294927.04.19893296330626.04.20023155316717.12.19872334234113.04.19882598260011.12.19922966297201.10.19932456246014.09.19963178318315.10.20082561258708.03.19862980298114.09.19882964296509.06.19912922292401.04.19913046304916.07.19924764476710.02.19934764476708.09.19781935194607.06.19792084209210.10.19872081208915.10.19791905191602.01.19802134214822.01.19802273229025.05.19802040205409.05.19801945195703.07.19801945195719.03.19822069208030.08.19832595260431.05.19912268227522.02.19952796281029.05.19953045305220.06.19952800281413.10.19955820584228.08.19972863287517.05.19964320432824.01.19813743374421.05.19823868388522.08.199643194353 -
Wellbores with cores