Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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11.11.2024 - 01:26
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BROOM FM

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  • General information

    General information
    Attribute Value
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    BROOM FM
    NPDID lithostrat. unit
    Norwegian Offshore Directorate's unique id for lithostratigraphic units.
    17
    Level
    Indicates the lithostratigraphic unit's level. Legal values: GROUP, FORMATION, MEMBER.
    FORMATION
    Lithostrat. 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

    Broom Formation

    Name
    Named by Deegan and Scull (1977) who gave it "sub-unit" status.
    Well type section
    UK well 211/29-3 (Shell) from 2818 m to 2829 m, coord N 61°08'06", E 01'43'36.5" (Fig 3.10) .
    Well reference section
    Norwegian 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) .
    Thickness
    11 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.
    Lithology
    In the type well it is a pale grey to brown, coarse-grained poorly sorted conglomeratic sandstone containing shale clasts.
    Boundaries
    The Broom Formation is distinguished from the underlying Dunlin Group and the overlying Rannoch Formation by its irregular, but generally lower, gamma ray readings.
    Distribution
    The 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 .
    Age
    Late Toarcian to Bajocian.
    Depositional environment
    The 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.
  • Wellbores penetrating

    Wellbores penetrating
    Wellbore name
    Wellbore completion date
    Top depth [m]
    Bottom depth [m]
    09.05.1982
    4489
    4500
    24.02.1984
    4415
    4421
    03.06.1978
    4051
    4057
    02.01.1997
    3764
    3777
    04.06.1974
    2664
    2668
    24.12.1987
    2810
    2815
    09.04.1988
    2947
    2949
    27.04.1989
    3296
    3306
    26.04.2002
    3155
    3167
    17.12.1987
    2334
    2341
    13.04.1988
    2598
    2600
    11.12.1992
    2966
    2972
    01.10.1993
    2456
    2460
    14.09.1996
    3178
    3183
    15.10.2008
    2561
    2587
    08.03.1986
    2980
    2981
    14.09.1988
    2964
    2965
    09.06.1991
    2922
    2924
    01.04.1991
    3046
    3049
    16.07.1992
    4764
    4767
    10.02.1993
    4764
    4767
    08.09.1978
    1935
    1946
    07.06.1979
    2084
    2092
    10.10.1987
    2081
    2089
    15.10.1979
    1905
    1916
    02.01.1980
    2134
    2148
    22.01.1980
    2273
    2290
    25.05.1980
    2040
    2054
    09.05.1980
    1945
    1957
    03.07.1980
    1945
    1957
    19.03.1982
    2069
    2080
    30.08.1983
    2595
    2604
    31.05.1991
    2268
    2275
    22.02.1995
    2796
    2810
    29.05.1995
    3045
    3052
    20.06.1995
    2800
    2814
    13.10.1995
    5820
    5842
    28.08.1997
    2863
    2875
    17.05.1996
    4320
    4328
    24.01.1981
    3743
    3744
    21.05.1982
    3868
    3885
    22.08.1996
    4319
    4353
  • Wellbores with cores

    Wellbores with cores
    Wellbore name
    Wellbore completion date
    Core length [m]
    24.02.1984
    5
    24.12.1987
    5
    17.12.1987
    7
    01.04.1991
    3
    08.09.1978
    11
    15.10.1979
    4
    31.05.1991
    6