SAUDA FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	SAUDA FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	141
  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.	BOKNFJORD GP

• Level below

  Level below

  Lithostrat. unit

• Description

  Sauda Formation
  
  Name

  From an industrial town in Rogaland. The formation comprises the upper part of the Børglum Member and the Fredrikshavn Member as defined by Deegan and Scull (1977).

  Well type section

  Norwegian well 9/4-3 (Conoco) from 2250 m to 2400m, coord N 57°26'54.5", E 04°18'57.7" (Fig 3.36) .

  Well reference section

  Norwegian well 8/1-1 (Phillips) from 2425 m to. 2551 m, coord N 57°51'43.53", E 03°12'27.64" (Fig 3.37) .

  Thickness

  150 m in the type well and 126 m in the reference well.

  Lithology

  The lower part is mainly a dark grey claystone with some siltstone and pyrite. The upper part is more silty, commonly developed as a siltstone. Shell fragments and pyrite are common.

  Boundaries

  The upper boundary is marked by the contrast between the predominantly silty upper part of the Sauda Formation and the overlying finer grained shales of the Flekkefjord Formation . This is usually accompanied by marked breaks both on gamma and sonic logs. The lower boundary is with the very radioactive Tau Formation .

  Distribution

  The formation is present in the Fiskebank and Egersund Sub-Basins. The thickest and most complete sequence is found in the Egersund Sub-Basin. In the western part of the Fiskebank Sub-Basin only the upper silty part is present.

  Age

  Middle to Late Volgian.

  Depositional environment

  The Sauda Formation was deposited in an open marine, generally low energy basinal environment. The energy level became slightly higher in the later stages of deposition of the 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]
  7/3-1	10.06.1969	2643	2655
  8/1-1	07.02.1972	2425	2551
  8/3-1	10.10.1966	1658	1831
  8/3-2	04.12.1982	2075	2200
  8/5-1	28.03.2013	2205	2260
  8/9-1	10.02.1976	2123	2156
  8/12-1	23.07.1971	2607	2661
  9/1-1 S	21.11.2011	2060	2262
  9/2-1	28.04.1987	2550	2993
  9/2-2	21.09.1987	2447	2957
  9/2-3	08.02.1990	2799	3098
  9/2-4 S	11.04.1994	3075	3875
  9/2-5	21.07.1995	2706	3021
  9/2-6 S	15.10.1996	3800	4627
  9/2-7 S	10.06.1997	3182	3683
  9/2-8 S	02.02.1998	4995	5689
  9/2-9 S	17.09.1999	2823	3551
  9/2-11	29.03.2010	2180	2492
  9/2-12	14.10.2019	2602	2825
  9/2-A-4	13.08.1996	3865	4478
  9/3-1	04.09.1986	1488	1686
  9/3-2	09.12.2005	2072	2503
  9/4-1	19.05.1968	2047	2200
  9/4-2	29.08.1970	2208	2396
  9/4-3	19.08.1972	2250	2400
  9/4-4	20.08.1977	2395	2598
  9/4-5	01.08.2006	2387	2603
  9/11-1	19.08.1971	1966	1993
  9/12-1	06.05.1969	1948	2005
  10/4-1	12.07.2015	1937	2215
  10/5-1	26.06.1976	1335	1396
  10/7-1	30.07.1992	1386	1486
  10/8-1	17.01.1971	1393	1451
  11/5-1	12.09.2007	1086	1107
  11/10-1	19.08.1969	1672	1750
  17/3-1	20.08.1995	1980	2311
  17/6-1	07.02.2011	2116	2489
  17/8-1	23.10.2021	2346	2393
  17/9-1	23.10.1973	1954	2165
  17/9-1 R	11.06.1974	1954	2165
  17/10-1	24.03.1969	2544	2640
  17/11-1	30.06.1968	2101	2180
  17/11-2	17.05.1976	2422	2495
  17/12-1 R	21.06.1972	1946	2167
  17/12-3	03.02.1980	2010	2236
  17/12-4	10.07.2009	2017	2149
  17/12-4 A	15.08.2009	2175	2358
  17/12-4 B	26.08.2009	2134	2309
  18/10-1	01.01.1980	2046	2277
  18/11-1	31.03.1974	1650	1747

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  9/11-1	19.08.1971	9