Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
sodir.no          Norsk
11.12.2024 - 01:27
Time of last synchronization with Norwegian Offshore Directorate's internal systems

HAUGESUND FM

Export: PDF icon PDF
  • General information

    General information
    Attribute Value
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    HAUGESUND FM
    NPDID lithostrat. unit
    Norwegian Offshore Directorate's unique id for lithostratigraphic units.
    57
    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

    Haugesund Formation

    Name
    After the town of Haugesund on the west coast of Norway.
    Well type section
    Norwegian well 2/7-3 (Phillips) from 3695 to 4191 m, coord N 56°23'02.9", E 03°15'45.9'7, (Fig 3.40) .
    See “remarks” for qualification of this well type section.
    Well reference sections
    Norwegian well 3/5-2 (Gulf) from 3182.5 to 3345 m, coord N 56°32', 56°32'34.46", E 04°23 '11.1", (Fig 3.42) . and 2/8-3 (Amoco) from 3761 m to 4115 m (TD.), coord N 56°18'31", E03°26'54.1", (Fig 3.41) .
    Thickness
    496 m in the type well, 162.5 m in 3/5-2 , and 354 m in 2/8-3 . The formation is thickest in the axis of the Central Graben and thins towards the flanking highs, where it passes partially or entirely into the sandy lithology of the Ula Formation .
    Lithology
    The Haugesund Formation consists predominantly of shale ranging in colour from light grey to brownish black. The shale is often carbonaceous and calcareous, and contains frequent thin sandstone interbeds. In general the upper part of the formation represents an overall "coarsening-upward cycle", becoming sandier and siltier upwards.
    Boundaries
    In the type well, 2/7-3 , the Haugesund Formation overlies Zechstein salt and the base of the formation is therefore obvious from both logs and cuttings. However, the Zechstein salt is almost certainly penetrative at this location and does not therefore provide a true stratigraphic base for Haugesund Formation (see “remarks”). In the reference well 2/8-3 and elsewhere in the Central Graben the base of the Haugesund Formation is often found overlying the Vestland Group . This is shown in the reference well 3/5-2 where the upward change from the sandy Bryne Formation to the shales of the Haugesund Formation produces the expected gamma ray/sonic log break (see (Fig 3.42) .
    The top of the Haugesund Formation in the type well is the contact with the sandy
    Eldfisk Formation . In areas of the Central Graben where the Eldfisk Formation is absent, the top of the Haugesund Formation is picked at a clearly correlatable gamma ray minimum, above which the gamma ray increases to the higher values of the basal Farsund Formation (e.g. well 2/8-3 ).
    Distribution
    The formation is ubiquitous in the Central Graben and widely distributed around the flanks of the basin and intra-basinal highs. It is absent in the Ula Field where it is entirely replaced by time-equivalent sands of the Ula Formation , and is also absent on the crest of the Southern Vestland Arch and intra-basinal highs.
    Age
    Callovian to Early Kimmeridgian. In neither the type nor the reference wells have pre-late Oxfordian ages been proven but Callovian mudstones assignable to the Haugesund Formation occur in the vicinity of the reference well 3/5-2 .
    Depositional environment
    The bulk of the shales of the Haugesund Formation were deposited in a marine, low energy, basinal environment. The common thin sand interbeds may represent sporadic turbidite influxes emanating from the adjacent shelf where coarser elastics (i.e. the Ula Formation ) were being deposited. The "coarsening-upward" nature of the sequence represents an overall regression which was terminated by a further transgression and the deposition of the Farsund Formation shales.
    Remarks
    The type well 2/7-3 penetrated a thick development of the Haugesund Formation, considered to be typical of the formation as it is commonly encountered in the Central Graben. However, the inadequately defined base of the formation makes 2/7-3 ultimately unsatisfactory as a type well. None of the other Central Graben wells available to this study establish a base for this formation, and penetrations on the flanks of the basin (such as the reference well 3/5-2 are fewer, atypical and potentially controversial stratigraphically. Penetration of a well-defined base for the Haugesund Formation by a future well in the Central Graben would perhaps provide a rare instance in which replacement of a type well might be justified.
    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]
    22.07.2010
    5627
    5736
    16.09.2016
    5752
    5831
    08.03.1993
    5305
    5457
    12.07.1992
    4655
    4995
    30.09.1978
    4387
    4570
    02.08.2003
    4504
    4911
    03.08.1982
    4164
    4251
    05.04.1983
    4053
    4193
    12.08.1984
    4426
    4560
    06.03.1985
    3996
    4024
    23.11.1985
    3965
    4037
    14.01.1992
    4347
    4435
    07.05.1997
    4323
    4506
    10.02.1999
    3384
    3513
    07.03.2009
    4176
    4241
    05.09.2013
    3393
    3431
    04.11.1991
    4828
    4877
    15.07.1992
    4828
    4877
    29.02.1992
    4283
    4340
    22.02.2015
    4543
    4567
    05.09.2015
    5142
    5205
    18.01.1992
    4313
    5460
    21.01.2009
    4456
    4525
    25.05.1980
    4236
    4560
    11.10.1972
    3695
    4192
    02.06.1980
    4181
    4423
    07.08.1992
    3518
    3796
    06.01.1994
    4658
    4664
    06.01.1994
    4698
    4756
    03.09.1972
    3761
    4115
    27.04.1989
    4207
    5191
    04.09.1979
    4032
    4292
    14.12.1989
    4125
    4525
    03.10.1969
    4075
    4691
    06.09.1986
    4720
    5042
    12.03.1987
    4365
    4597
    14.09.1990
    5175
    5537
    26.02.1994
    2920
    3013
    28.06.1978
    2817
    2902
    20.08.1978
    3183
    3345
    23.01.1990
    3261
    3411
    07.02.1992
    3085
    3379
    30.11.1996
    4050
    4120
    27.10.2008
    3857
    3930
    03.03.2013
    3801
    3892
    28.04.2013
    3490
    3524
    29.12.2010
    3465
    3563
  • Wellbores with cores

    Wellbores with cores
    Wellbore name
    Wellbore completion date
    Core length [m]
    12.07.1992
    46
    23.11.1985
    16
    29.02.1992
    1
    07.08.1992
    2
    06.01.1994
    5
    14.12.1989
    0
    14.09.1990
    7
    03.03.2013
    2