Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
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04.11.2024 - 01:25
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EGERSUND FM

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  • General information

    General information
    Attribute Value
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    EGERSUND FM
    NPDID lithostrat. unit
    Norwegian Offshore Directorate's unique id for lithostratigraphic units.
    30
    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

    Egersund Formation

    Name
    Named by Deegan and Scull (1977) who gave the unit member status.
    Well type section
    Norwegian well 9/4-1 (Amoseas) from 2251 m to 2288 m, coord N 57°35'02", E 04°01'13" (Fig 3.34) .
    Well reference section
    17/12-1 R (Phillips) from 2215 m to 2290 m, coord N 58° 11' 15.4'', E 03°56'22.2'' (Fig 3.35) .
    Thickness
    37 m in the type well and 75 m in the reference well.
    Lithology
    In the type well the formation consists of dark grey micromicaceous shales and siltstones with brownish, locally oolitic, microcrystalline carbonate beds and occasionally sandstone streaks. The latter become more important east and north-east of the type well.
    Boundaries
    The lower boundary is also the junction of the Boknfjord Group with the Vestland Group and is described above. At the base of the formation a more radioactive part is recognizable in several wells. The upper boundary is marked by the appearance of the dark grey to black organic-rich shales of the overlying Tau Formation . The shales of the Tau Formation have a high radioactivity and a low velocity, and therefore the upper boundary is marked by strong log breaks.
    Distribution
    The formation is distributed throughout Fiskebank and Egersund Sub-Basins.
    Age
    Callovian to Kimmeridgian.
    Depositional environment
    The Egersund Formation was deposited in an open marine, generally low energy basinal 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.
  • Wellbores penetrating

    Wellbores penetrating
    Wellbore name
    Wellbore completion date
    Top depth [m]
    Bottom depth [m]
    10.10.1966
    1890
    2040
    04.12.1982
    2290
    2375
    28.03.2013
    2314
    2339
    21.11.2011
    2332
    2392
    28.04.1987
    3097
    3162
    21.09.1987
    3062
    3123
    08.02.1990
    3188
    3252
    11.04.1994
    3993
    4094
    21.07.1995
    3078
    3146
    15.10.1996
    4714
    4783
    10.06.1997
    3784
    3854
    02.02.1998
    5769
    5823
    02.02.1998
    7420
    7584
    17.09.1999
    3669
    3844
    29.03.2010
    2574
    2629
    14.10.2019
    2932
    2991
    13.08.1996
    4560
    4631
    04.09.1986
    1749
    1788
    09.12.2005
    2607
    2660
    19.05.1968
    2251
    2288
    29.08.1970
    2435
    2490
    19.08.1972
    2437
    2490
    20.08.1977
    2668
    2718
    01.08.2006
    2654
    2703
    29.06.1968
    1825
    1922
    19.08.1971
    2005
    2040
    12.07.2015
    2245
    2274
    17.01.1971
    1464
    1494
    12.09.2007
    1141
    1276
    20.08.1995
    2339
    2388
    07.02.2011
    2542
    2630
    23.10.2021
    2417
    2435
    23.10.1973
    2205
    2220
    11.06.1974
    2205
    2220
    24.03.1969
    2675
    2682
    30.06.1968
    2195
    2211
    17.05.1976
    2513
    2521
    21.06.1972
    2215
    2290
    03.02.1980
    2288
    2370
    10.07.2009
    2198
    2277
    15.08.2009
    2438
    2606
    26.08.2009
    2377
    2536
    01.01.1980
    2319
    2405
    31.03.1974
    1800
    1878
  • Wellbores with cores

    Wellbores with cores
    Wellbore name
    Wellbore completion date
    Core length [m]
    28.04.1987
    13
    10.07.2009
    9