MAUREEN FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	MAUREEN FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	102
  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.	ROGALAND GP

• Level below

  Level below

  Lithostrat. unit

• Description

  Maureen Formation
  
  Name

  Named by Deegan & Scull (1977) from the Maureen Field in UK block 16/29.

  Well type section

  UK well 21/10-1 from 2524 m to 2464 m, coordinates N 57°43'50.37", E 00°58'29.19" (Fig 5.44) . No cores.

  Well reference sections

  UK well 16/29-4 from 2796 m to 2679 m, coordinates N 58°05'20.90", E 01°39'15.10" (Fig 5.45) . No cores.
  Norwegian well 7/11-1 from 3173 m to 3069 m, coordinates N 57°04'15.60", E 02°26'24.40" (Fig 5.46) . No cores.

  Thickness

  The Maureen Formation is thickest in the Witch Ground Graben in the UK sector of the central North Sea where it consists of as much as 400 m of mainly sandstones. It thins westwards and southwards, and is poorly developed in Norwegian waters, the maximum thickness in a well is found 7/11-1 where there are 104 m of sandstones and carbonates.

  Lithology

  The Maureen Formation consists of sandstones that are slightly to very calcareous and often contain reworked limestones. The sandstones are interbedded with brown and dark grey shales, and are fine to medium grained, locally very coarse.
  The type well established by Deegan & Scull (1977) represents a distal and somewhat atypical section. A more representative well from the Maureen Formation sandstones is UK well 16/29-4 (Fig 5.45) .
  The formation pinches out distally and is replaced by the light grey marls and shales of the Våle Formation .

  Basal stratotype

  The Maureen Formation rests on the Shetland Group .

  Characteristics of the upper boundary

  The upper boundary is defined by the change from sandstones containing reworked limestone fragments and limestone beds, to the shales of the Lista Formation . The boundary is characterised by an upward increasing gamma-ray response (Fig 5.45) . and an overall decreasing velocity. Where the Andrew Formation rests on the Maureen Formation the transition is seen as an increase in gamma-ray readings and decrease in velocity (Fig 5.44) .

  Distribution

  The coarse detrital facies of the Maureen Formation is developed in the central North Sea, in what is in general a lobe-shaped deposit trending from the East Shetland Platform southeast along the Central Trough. The formation thins towards the east and west, and grades into the Våle Formation . The Maureen Formation is not well developed in the Norwegian sector. Its approximate distribution on the Norwegian continental shelf is shown in (Fig 5.47) .

  Age

  Early Paleocene.

  Depositional environment

  The Maureen Formation was deposited in an open marine environment dominated by sand influx from the northwest, together with local erosion of Danian and Cretaceous rocks.

  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.

• Wellbores penetrating

  Wellbores penetrating

  Wellbore name	Wellbore completion date	Top depth [m]	Bottom depth [m]
  1/2-1	04.06.1989	3335	3407
  1/2-2	02.02.2006	3368	3418
  1/3-12 S	22.07.2010	3449	3473
  1/5-2	15.04.1974	3033	3069
  1/9-3 R	30.09.1978	3021	3081
  2/1-2	26.02.1978	2692	2744
  2/2-1	03.07.1982	2781	2815
  2/2-3	11.05.1983	2947	2965
  2/2-4	07.06.1988	2777	2826
  2/3-4	24.07.1984	2613	2719
  2/5-8	05.11.1988	3090	3107
  2/8-2	30.07.1970	2932	2950
  2/8-12 S	27.04.1989	3021	3046
  2/9-1	07.12.1972	3066	3092
  2/11-7	06.09.1986	3056	3075
  3/7-2	20.06.1981	2545	2558
  3/7-3	31.08.1981	2775	2812
  3/7-4	23.01.1990	2819	2848
  3/7-8 S	03.03.2013	3302	3353
  3/7-9 S	28.04.2013	2945	2969
  7/8-1	05.02.1969	2602	2669
  7/8-3	12.12.1983	2831	2858
  7/8-4	20.02.1985	3099	3125
  7/11-1	15.06.1968	3069	3173
  7/11-2	14.10.1968	3175	3220
  7/11-3	07.02.1969	3286	3333
  7/11-4	31.07.1969	3167	3183
  7/11-5	10.06.1982	3104	3231
  7/11-6	20.10.1982	3151	3225
  7/11-7	25.12.1983	3377	3390
  7/11-7 R	08.10.1984	3377	3390
  7/11-9	09.03.1986	3094	3162
  7/11-10 S	10.09.1990	3271	3440
  7/11-11 S	10.06.2007	3253	3408
  7/12-3	03.06.1977	2730	2791
  7/12-3 A	06.09.1977	2762	2826
  7/12-4	12.12.1977	2704	2737
  7/12-5	07.06.1981	2866	2912
  7/12-7	26.07.1988	2791	2858
  7/12-8	23.12.1988	2929	2940
  8/4-1	25.07.1977	1585	1605
  9/3-2	09.12.2005	619	624
  15/8-1	07.01.1982	2727	2825
  15/9-7	29.04.1981	2703	2779
  15/9-9	14.07.1981	2392	2425
  15/9-12	27.02.1982	2625	2723
  15/12-1	06.09.1975	2634	2643
  15/12-5	04.05.1986	2418	2439
  15/12-11 S	19.05.1997	2813	2825
  15/12-16 S	31.03.2006	2435	2447
  16/7-2	30.03.1982	2423	2435
  17/12-2	09.10.1973	987	991
  30/9-1	29.01.1983	2270	2281
  30/9-5 S	19.07.1985	2157	2161
  30/9-6	21.04.1987	2302	2317

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  1/9-3 R	30.09.1978	27
  15/12-1	06.09.1975	9