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Factpages Norwegian Offshore Directorate
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BRYNE FM

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  • General information

    General information
    Attribute Value
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    BRYNE FM
    NPDID lithostrat. unit
    Norwegian Offshore Directorate's unique id for lithostratigraphic units.
    19
    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

    Bryne Formation

    Name
    From a town in the south-western part of Norway. This new formation represents the lower part of the Haldager Formation as described by Deegan and Scull (1977).
    Well type section
    Norwegian well 9/4-3 (Conoco) from 2507.5 m to 2613 m, coord N 57°36'54.5", E 04°18'57.7" (Fig 3.29) .
    Well reference section
    Norwegian well 8/12-1 (Conoco) from 2710.5 m to 2813 m, coord N 57°13'18.6", E 03°46'45.13" (Fig 3.30) .
    Thickness
    The formation is 105.5 m thick in the type well and 102.5 m in the reference well. It shows local variations in thickness which probably reflect both Middle Jurassic syndepositional structuring and later erosion.
    Lithology
    The Bryne Formation comprises interbedded sandstones, siltstones, shales and coals. The sandstones are white to grey, very fine to coarse grained, poorly sorted, friable to hard and occasionally kaolinitic. The shales are generally grey to brown, micaceous, occasionally silty, non-calcareous and often carbonaceous.
    Boundaries
    The base of the Bryne Formation is unconformable and represents the contact with the partly eroded shales of the Fjerritslev Formation or with arenaceous Triassic rocks. The boundary with the Fjerritslev Formation is usually clearly defined on both gamma ray and sonic logs, whereas the boundary with the Lower Jurassic/ Triassic sandy sequences ( Gassum and Skagerrak formations) often gives no appreciable log breaks. However, on most logs the appearance of these sediments is marked by an overall sonic log shift to higher interval velocities. Where the formation is overlain by the shales of the Boknfjord or Tyne groups, clear breaks can be observed both on gamma ray and sonic logs. However, where the formation is overlain by the Sandnes or Ula formations the boundary is not so easily defined due to internal facies changes within these two formations (see description of the Sandnes and Ula formations).
    Distribution
    The Bryne Formation is present in the Norwegian-Danish Basin and in the Central Graben. Two main Middle Jurassic depocentres are recognized; one in the Danish Sub-Basin and another in the Fiskebank Sub-Basin (Hamar et al., 1982). The Bryne Formation is equivalent to the Haldager Sand Member of the Haldager Formation as described in Denmark (Larsen, 1966; Michelsen, 1978).
    Age
    Mainly Bajocian to Bathonian, but may locally be older in the Norwegian-Danish Basin.
    Depositional environment
    The Bryne Formation represents deposition in a fluvial/deltaic environment.
    Remarks
    The Bryne Formation as described above is ap proximately equivalent in age and lithofacies to the Sleipner Formation of the Southern Viking Graben. So far it is not possible to demonstrate a connection between the two deposits, and this constitutes the reason for use of separate nomenclature. The Bryne Formation represents the lower part of the Haldager Formation, extended into the Norwegian sector from the Danish sector by Deegan and Scull (1977). Having defined exten-sive marine sands worthy of formation status ( Ula , Sandnes formations) comprising the upper part of Deegan and Scull's Haldager Forma tion, workers on this project saw the need for a separate formation, defining the lower non-marine sands. The term "Haldager Formation" could not be used since it essentially equates to the Haldager Sand Member, the lower part of the Haldager Formation in the Danish sector (Michelsen, 1978). (The upper part of the Danish Haldager Formation is the Flyvberg Member, a marine sandstone/siltstone unit approximately time-equivalent to the Sandnes Formation of the Norwegian-Danish Basin). When a previously established formation is sub divided into new units which are formally given formation status, the original formation with its original name should be either raised to group rank or abandoned; the old name should not be retained for any of the divisions of the original unit (Hedberg, 1976). It was therefore thought expedient to abandon the name "Haldager Formation" in the Norwegian sector. It is recognised, however, that there is probably complete lithological continuity between the new Bryne Formation of the Norwegian sector and the Haldager Sand Member of the Danish Haldager 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]
    24.03.1983
    4542
    4620
    16.09.2016
    5911
    5942
    26.02.1978
    3347
    3384
    29.03.1980
    3991
    4101
    03.08.1982
    4261
    4346
    05.04.1983
    4199
    4454
    12.08.1984
    4566
    4587
    06.03.1985
    4061
    4105
    23.11.1985
    4063
    4081
    06.07.1991
    4257
    4289
    07.05.1997
    4506
    4617
    10.02.1999
    3548
    3550
    07.03.2009
    4241
    4362
    28.02.2009
    6036
    6111
    05.09.2013
    3450
    3523
    03.07.1982
    3752
    3820
    27.08.1982
    2917
    2995
    07.06.1988
    3902
    3969
    24.07.1984
    3215
    3332
    04.11.1991
    4877
    4996
    15.07.1992
    4877
    4973
    29.02.1992
    4389
    4486
    14.03.2008
    5225
    5426
    22.02.2015
    4622
    4743
    21.01.2009
    4525
    4576
    30.05.1969
    3233
    3256
    25.05.1980
    4560
    4723
    25.02.1983
    3545
    3638
    02.06.1990
    3542
    3606
    02.02.1981
    4810
    4840
    14.03.1990
    4807
    4837
    09.06.1999
    4634
    4668
    27.04.1989
    5191
    5225
    14.12.1989
    4543
    4600
    20.08.1978
    3345
    3575
    23.01.1990
    3474
    3688
    07.02.1992
    3436
    3609
    03.03.2013
    3949
    4148
    28.04.2013
    3563
    3680
    14.09.2015
    3430
    3467
    27.05.2019
    3554
    3611
    08.05.2008
    3122
    3175
    05.02.1969
    3230
    3275
    29.05.1971
    2495
    2524
    23.09.1976
    3532
    3554
    06.09.1977
    3827
    3929
    12.12.1977
    3529
    3623
    07.02.1972
    2666
    2680
    04.12.1982
    2375
    2417
    25.07.1977
    2397
    2513
    10.02.1976
    2168
    2247
    23.07.1971
    2711
    2813
    21.11.2011
    2411
    2484
    28.04.1987
    3309
    3601
    21.09.1987
    3230
    3475
    08.02.1990
    3373
    3424
    11.04.1994
    4295
    4417
    21.07.1995
    3263
    3355
    15.10.1996
    4940
    5205
    10.06.1997
    3994
    4099
    02.02.1998
    5955
    6023
    17.09.1999
    4365
    4367
    29.03.2010
    2761
    2861
    14.10.2019
    3123
    3155
    13.08.1996
    4768
    4845
    04.09.1986
    1843
    1955
    09.12.2005
    2778
    3068
    19.05.1968
    2319
    2329
    29.08.1970
    2540
    2633
    19.08.1972
    2508
    2613
    20.08.1977
    2814
    2845
    01.08.2006
    2783
    2836
    19.08.1971
    2040
    2082
    06.05.1969
    2050
    2107
    12.07.2015
    2311
    2348
    26.06.1976
    1490
    1524
    30.07.1992
    1632
    1836
    27.11.2012
    3016
    3034
    20.08.1995
    2410
    2440
    07.02.2011
    2647
    2726
    23.10.2021
    2443
    2455
    21.06.1972
    2306
    2410
    09.10.1973
    2179
    2243
    03.02.1980
    2396
    2617
    10.07.2009
    2298
    2398
    15.08.2009
    2667
    3338
    26.08.2009
    2595
    3253
    01.01.1980
    2421
    2506
    31.03.1974
    1964
    2060
  • Wellbores with cores

    Wellbores with cores
    Wellbore name
    Wellbore completion date
    Core length [m]
    07.03.2009
    27
    27.08.1982
    7
    25.02.1983
    8
    14.12.1989
    9
    23.01.1990
    87
    03.03.2013
    91
    12.12.1977
    28
    04.12.1982
    13
    23.07.1971
    24
    21.09.1987
    17
    19.08.1971
    18
    20.08.1995
    8
    10.07.2009
    52
    01.01.1980
    48