VADE FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	VADE FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	184
  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.	HORDALAND GP

• Level below

  Level below

  Lithostrat. unit

• Description

  Vade Formation
  
  Name

  Vade is a giant from Norse mythology who wades across the fjords.

  Well type section

  Norwegian well 2/2-1 from 2172 m to 2100 m, coordinates N 56°47'15.69", E 03°38'15.62" (Fig 5.60) . No cores.

  Well reference section

  Norwegian well 2/3-2 from 1855 m to 1795 m, coordinates N 56°54'53.70", E 03°49'02.25" (Fig 5.68) . No cores.

  Thickness

  The thickness is 72 m in the type well and 60 m in the reference well. (Fig 5.69) . shows a seismic section through the Vade Formation which illustrates thinning to the southwest.

  Lithology

  The formation consists of thinly interbedded, light green to grey, very fine grained sandstones and silt-stones. These are glauconitic, slightly micaceous and well sorted. Fossils are present. Reference well 2/3-2 shows that the formation interfingers with the claystones of the Hordaland Group (Fig 5.68) .

  Basal stratotype

  The lower boundary shows a decrease in gamma-ray intensity and an increase in velocity from the claystones of the Hordaland Group into the Vade Formation (Fig 5.60) .

  Characteristics of the upper boundary

  The upper boundary is characterised by an increase in gamma-ray response and a decrease in velocity from the Vade Formation into the claystones of the Hordaland Group (Fig 5.60) .

  Distribution

  The formation has only been penetrated in some wells in blocks 2/2 and 2/3. Its distribution is shown in (Fig 5.66) .

  Age

  Late Oligocene.

  Depositional environment

  The sandstones were deposited in a shallow marine environment. Their deposition can be seen as a response to an eustatic fall in sea level or a tectonic uplift of the area. Regional considerations indicate a source area in the east or northeast.

  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]
  1/3-11	30.08.2008	2594	2600
  1/3-13	07.07.2021	2418	2425
  2/1-12	10.02.1999	2150	2227
  2/1-14 S	28.02.2009	3211	3839
  2/1-15	05.09.2013	2199	2259
  2/1-16 S	13.07.2013	2237	2280
  2/2-1	03.07.1982	2100	2172
  2/2-2	27.08.1982	1978	2057
  2/2-4	07.06.1988	2086	2184
  2/2-5	19.02.1992	2184	2746
  2/2-6	14.05.2010	2302	2319
  2/3-2	13.08.1969	1795	1855
  3/6-1	10.07.2000	1530	1639
  3/7-7	27.10.2008	2101	2860
  4/4-1	13.10.2013	701	790
  8/12-1	23.07.1971	1089	1091
  8/12-1	23.07.1971	1289	1291
  8/12-1	23.07.1971	1303	1305

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  2/2-2	27.08.1982	15