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Factpages Norwegian Offshore Directorate
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11.12.2024 - 01:27
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VIDAR FM

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  • General information

    General information
    Attribute Value
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    VIDAR FM
    NPDID lithostrat. unit
    Norwegian Offshore Directorate's unique id for lithostratigraphic units.
    187
    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

    Vidar Formation 1)

    Name
    Vidar was a son of the Norse god Odin.
    Well type section
    Norwegian well 2/1-4 from 3138 m to 3075 m, coordinates N 56°54'39.82", E 03°04'02.25" (Fig 5.50) . No cores.
    Well reference section
    Norwegian well 1/3-1 from 3147 m to 3095 m, coordinates N 56° 51'21.00", E 02°51'05.00" (Fig 5.41) . No cores.
    Thickness
    The Vidar Formation is 63 m thick in the type well and 52 m thick in the reference well.
    Lithology
    Homogenous limestone is the dominant lithology, but streaks of skeletal detritus and clasts of sandstone occur.
    Basal stratotype
    The lower boundary represents a sharp transition from the claystones of the Lista Formation or the marl of the Våle Formation to the overlying limestones of the Vidar Formation. This is marked by a distinct decrease in gamma-ray readings and an increase in velocity (Fig 5.41 , 5.50)
    Characteristics of the upper boundary
    The upper boundary represents a transition to the claystones of the Lista Formation , characterized by a dramatic increase in gamma-ray readings and a decrease in velocity (Fig 5.41 , 5.50).
    Distribution
    The Vidar Formation is present in the Central Trough (Fig 5.47) . A similar limestone is found in well 16/1-1 . This might be an equivalent to the Vidar Formation.
    Age
    Early Paleocene.
    Depositional environment
    Presence of reworked Upper and Lower Cretaceous material indicates that the Vidar Formation represents reworked chalk from the Shetland Group chalk facies as well as reworked marls and claystones from the Cromer Knoll Group . Mass flows from each side of the Central Trough are the most probable transport mechanism for this reworked material.
    Source
    • Isaksen, D. and Tonstad, K. (eds.) 1989: A revised Cretaceous and Tertiary lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 5, 59 pp.
    Footnotes
    • 1) The Vidar Formation has been better defined by Fritsen and Riis (unpublished).
    References
    • Fritsen, A. and Riis, F. (unpublished): A revised chalk lithostratigraphic nomenclature.
  • Wellbores penetrating

    Wellbores penetrating
    Wellbore name
    Wellbore completion date
    Top depth [m]
    Bottom depth [m]
    11.11.1968
    3095
    3147
    24.03.1983
    3059
    3148
    08.05.1983
    2676
    2688
    11.02.1985
    3153
    3206
    27.05.1997
    3202
    3278
    31.07.1998
    3254
    3259
    22.07.2010
    3296
    3339
    12.07.1992
    3168
    3237
    14.11.1972
    3039
    3104
    03.08.1982
    3075
    3136
    05.04.1983
    3002
    3101
    12.08.1984
    3128
    3173
    06.03.1985
    3102
    3157
    23.11.1985
    3065
    3097
    06.07.1991
    3055
    3143
    08.03.1992
    3055
    3143
    07.05.1997
    3177
    3252
    10.02.1999
    2813
    2903
    07.03.2009
    3151
    3254
    28.02.2009
    4640
    4877
    05.09.2013
    2851
    2931
    13.07.2013
    2890
    2988
    08.11.2019
    3070
    3159
    13.08.1969
    2290
    2297
    31.05.1970
    3005
    3023
    09.10.1973
    3092
    3118
    20.12.1973
    3111
    3150
    09.04.1974
    3060
    3094
    31.01.1989
    3217
    3262
    06.04.1990
    3229
    3274
    14.04.1990
    3217
    3262
    16.03.1990
    3456
    3497
    27.10.2003
    3456
    3497
    04.11.1991
    3238
    3254
    15.07.1992
    3238
    3254
    29.02.1992
    3118
    3165
    10.07.1994
    3277
    3311
    22.02.2015
    3147
    3267
    05.09.2015
    3368
    3405
    22.02.2002
    3087
    3091
    31.10.2021
    3175
    3227
    23.09.1976
    2628
    2702
    24.07.1981
    2661
    2702
    29.08.1991
    2861
    2917
    06.11.1991
    2953
    2962
    17.03.1996
    4020
    4126
    18.05.2012
    3233
    3286
    06.10.2010
    2527
    2550
    18.12.2011
    2475
    2495
    27.10.2011
    2469
    2486
    24.05.2014
    1856
    1860
    04.03.2014
    1819
    1949
    16.07.2014
    1529
    1543
    04.01.2019
    2486
    2518
  • Wellbores with cores

    Wellbores with cores
    Wellbore name
    Wellbore completion date
    Core length [m]