HEIMDAL FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	HEIMDAL FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	62
  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
  MEILE MBR (INFORMAL)

• Description

  Heimdal Formation
  
  Name

  Named by Deegan & Scull (1977) after the Heimdal Field on the Norwegian continental shelf. Heimdal was a son of the Norse god Odin, and one of the principal gods in Norse mythology.

  Well type section

  Norwegian well 25/4-1 from 2423 m to 2067 m, coordinates N 59°34'27.30", E 02°13'22.60" (Fig 5.52) . 36 m of cores from the upper part of the formation, and 6.5 m from the lower part.

  Well reference section

  Norwegian well 15/9-5 from 2684 m to 2448 m, coordinates N 58°24'12.47", E 01°42'29.20" (Fig 5.42) . No cores.

  Thickness

  The Heimdal Formation is 356 m thick in the type well and 236 m thick in the reference well. It thins rapidly east of these wells and south of well 15/9-5 .

  Lithology

  The formation is dominated by thick units of poorly sorted, fine to coarse grained, poorly cemented sandstones with variable amounts of mica, glauconite and detrital lignite. The sandstone units are interbedded with grey and black shales, limestones and sandy limestones. There is a wide range in number and thickness of interbedded lithologies. In general, the amount of carbonate increases towards the base of the formation.

  Basal stratotype

  The lower boundary of the Heimdal Formation is usually marked by a transition from the Lista Formation into the interbedded sandstones of the Heimdal Formation. The log response is characterised by lower gamma-ray readings and higher velocities when entering the overlying Heimdal Formation (Fig 5.52) . The Heimdal Formation locally overlies the cleaner sandstones of the Ty Formation . In that case, the lower boundary is placed where clean sandstones give way to the interbedded sandstones of the Heimdal Formation. These formations are normally separated by the Lista Formation .

  Characteristics of the upper boundary

  The upper boundary is usually defined by a transition into the Lista Formation shales and is then characterized by higher radioactivity and lower velocity (Fig 5.52) . Locally, the Heimdal Formation is overlain by the Hermod Formation , the upper boundary therefore being defined by a change into clean, "blocky" sand.

  Distribution

  The sandstones of the Heimdal Formation are distributed in a broadly lobate pattern eastwards from the western margin of the Viking Graben. Their approximate distribution on the Norwegian continental shelf is shown in (Fig 5.47) .

  Age

  Paleocene.

  Depositional environment

  In the westernmost areas (East Shetland Platform/Fladen Ground Spur), the Heimdal Formation was deposited on a shallow-marine shelf under high-energy conditions. In the Viking Graben, the formation was deposited as submarine fans derived from sand accumulations on the shallow shelf to the west. The shale layers consist partly of the fine fraction of the turbidity currents and of hemipelagic mud.

  Remarks

  In a narrow belt extending from the eastern part of quadrant 15 (Fig 5.47) , the Heimdal Formation is developed as a clean sandstone without interbedded shales. This is described as the Meile member .

  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]
  15/2-1	24.02.1982	2236	2494
  15/3-1 S	06.07.1975	2332	2529
  15/3-2	24.01.1977	2182	2338
  15/3-2 R	27.11.1977	2182	2338
  15/3-3	09.08.1979	2290	2557
  15/3-4	30.03.1982	2463	2580
  15/3-5	13.05.1984	2350	2695
  15/3-6	05.01.1999	2379	2630
  15/3-7	01.09.2001	2309	2589
  15/3-9	13.08.2010	2439	2610
  15/3-11	09.08.2018	2446	2620
  15/3-12 A	03.03.2020	2550	2664
  15/3-12 S	20.01.2020	2531	2663
  15/5-1	08.04.1978	2164	2573
  15/5-2	16.12.1978	2252	2606
  15/5-3	07.12.1980	2180	2595
  15/5-4	03.07.1991	2198	2300
  15/5-5	05.10.1995	2154	2458
  15/5-6	16.07.1997	2172	2592
  15/5-7	07.09.2008	2222	2630
  15/5-7 A	13.10.2008	2222	2630
  15/6-2 R	01.08.1974	2206	2676
  15/6-3	19.12.1974	2298	2575
  15/6-4	16.08.1976	2327	2605
  15/6-5	29.11.1977	2401	2673
  15/6-6	09.06.1982	2353	2647
  15/6-7	08.06.1993	2427	2606
  15/6-8 A	18.04.1997	2431	2480
  15/6-8 S	05.04.1997	2433	2650
  15/6-9 A	13.06.2007	2352	2735
  15/6-9 B	23.07.2007	2352	2735
  15/6-9 S	27.05.2007	2352	2735
  15/6-10	06.04.2009	2404	2574
  15/6-11 A	13.03.2011	2245	2757
  15/6-11 S	19.12.2010	2240	2634
  15/6-12	09.02.2011	2341	2559
  15/6-13	15.05.2015	2317	2570
  15/6-13 A	03.06.2015	2321	2580
  15/6-13 B	29.06.2015	2317	2696
  15/6-16 S	28.06.2019	2259	2619
  15/8-1	07.01.1982	2510	2675
  15/8-2	21.10.2011	2432	2764
  15/9-1	30.05.1977	2391	2611
  15/9-2	17.06.1978	2419	2684
  15/9-3	03.04.1979	2274	2595
  15/9-4	14.06.1979	2486	2768
  15/9-5	11.04.1980	2448	2736
  15/9-6	07.09.1980	2381	2617
  15/9-7	29.04.1981	2453	2651
  15/9-8	25.05.1981	2476	2674
  15/9-9	14.07.1981	2322	2392
  15/9-10	07.11.1981	2547	2596
  15/9-11	23.12.1981	2387	2530
  15/9-12	27.02.1982	2374	2625
  15/9-13	27.05.1982	2395	2440
  15/9-14	27.06.1982	2623	2698
  15/9-16	24.08.1982	2378	2489
  15/9-17	30.03.1983	2378	2486
  15/9-18	02.03.1984	2465	2665
  15/9-19 A	09.11.1997	3178	3313
  15/9-19 B	02.02.1998	3209	3375
  15/9-19 SR2	25.07.1997	3626	3830
  15/9-19 SR	29.04.1993	3623	3827
  15/9-20 S	20.03.1994	2931	3035
  15/9-21 S	23.05.1998	2891	3223
  15/9-22	13.03.2006	2509	2702
  15/12-11 S	19.05.1997	2680	2813
  15/12-18 A	11.12.2007	2884	2894
  16/1-1	10.12.1967	2402	2646
  16/1-2	07.08.1976	2098	2138
  16/1-3	27.09.1982	2423	2458
  16/1-6 A	21.06.2003	2007	2056
  16/1-6 S	07.06.2003	1862	1876
  16/1-7	28.05.2004	2327	2400
  16/1-9	22.04.2008	2126	2143
  16/1-11	26.04.2010	2128	2171
  16/1-11 A	09.05.2010	2152	2207
  16/1-14	30.11.2010	2094	2108
  16/1-21 A	20.04.2015	2826	2828
  16/1-21 S	03.03.2015	2176	2212
  16/1-22 A	04.06.2015	2407	2485
  16/1-22 B	14.06.2015	2600	2727
  16/1-22 S	27.05.2015	2239	2289
  16/1-24	16.03.2015	2066	2067
  16/1-26 A	24.04.2016	3506	3679
  16/1-26 S	14.04.2016	3547	3798
  16/1-29 S	03.06.2018	1794	1809
  16/1-33 S	05.08.2020	2282	2350
  16/1-34 A	15.09.2021	1969	1989
  16/1-34 S	31.07.2021	2083	2135
  16/1-35 S	28.02.2023	2212	2288
  16/4-1	18.11.1984	2142	2277
  16/4-2	29.07.1990	2415	2585
  16/4-3	24.12.2000	2277	2282
  16/4-3	24.12.2000	2334	2412
  16/7-2	30.03.1982	2339	2423
  24/6-1	25.08.1985	2180	2485
  24/6-2	08.07.1998	2099	2535
  24/6-4	02.06.2003	2123	2325
  24/9-1	03.07.1976	2202	2497
  24/9-2	22.07.1977	2169	2502
  24/9-3	15.04.1981	2215	2567
  24/9-5	26.01.1994	2161	2624
  24/9-6	07.03.1994	2210	2255
  24/9-7	25.03.2004	2169	2280
  24/9-7 A	29.03.2004	2248	2277
  24/9-8	04.09.2007	2142	2190
  24/9-9 S	07.10.2009	2368	2402
  24/9-12 S	08.02.2018	2234	2336
  24/9-13	16.07.2019	2225	2305
  24/9-13 A	29.07.2019	3427	3466
  24/12-1	09.04.1978	2326	2700
  24/12-1 R	14.08.1978	2326	2700
  24/12-2	21.01.1982	2202	2407
  24/12-3 S	29.07.1996	2398	2831
  24/12-4	14.09.2001	2224	2265
  24/12-5 S	21.12.2007	2277	2325
  24/12-6 S	20.12.2010	2273	2693
  25/1-1	22.07.1971	2245	2389
  25/1-2	25.08.1971	2215	2441
  25/1-6	18.03.1978	2249	2563
  25/1-9	12.10.1986	2452	2480
  25/1-9	12.10.1986	2515	2550
  25/1-9	12.10.1986	2603	2655
  25/1-9	12.10.1986	2668	2675
  25/1-9	12.10.1986	2697	2757
  25/1-11 A	14.05.2010	2390	2410
  25/1-11 R	26.04.2010	2281	2338
  25/2-7	12.07.1982	2194	2318
  25/2-16 S	13.09.2001	2445	2475
  25/2-16 S	13.09.2001	2538	2550
  25/2-16 S	13.09.2001	2596	2603
  25/2-16 S	13.09.2001	2636	2706
  25/4-1	09.12.1972	2067	2423
  25/4-2	06.12.1973	2157	2561
  25/4-3	22.11.1974	2125	2503
  25/4-4	07.07.1975	2133	2456
  25/4-5	26.03.1981	2150	2347
  25/4-6 S	24.08.1991	2200	2611
  25/4-6 SR	14.09.2003	2209	2620
  25/4-7	17.04.2003	2085	2286
  25/4-8	22.06.2003	2113	2286
  25/4-9 S	29.09.2003	2236	2377
  25/4-10 A	28.11.2009	2476	2550
  25/4-10 S	10.11.2009	2844	2912
  25/4-11	23.08.2017	2337	2427
  25/4-13 A	09.10.2018	2541	2641
  25/4-13 S	28.09.2018	2549	2653
  25/5-4	07.03.1991	2251	2340
  25/5-5	23.11.1995	2159	2493
  25/5-6	19.09.2009	2344	2376
  25/5-6	19.09.2009	2405	2446
  25/5-9	25.02.2014	2182	2265
  25/7-1 S	19.07.1986	2177	2414
  25/7-2	18.07.1990	2318	2470
  25/7-3	28.08.1995	2094	2326
  25/7-4 S	21.06.1997	2176	2371
  25/7-5	30.08.1997	2126	2490
  25/7-6	14.10.2000	2150	2250
  25/7-7	09.11.2019	2311	2516
  25/7-8 S	09.01.2020	2211	2355
  25/7-10	06.09.2022	2209	2685
  25/8-1	04.07.1970	1777	1812
  25/8-2	01.10.1975	2158	2179
  25/8-3	17.04.1981	1783	1787
  25/8-3	17.04.1981	1794	1835
  25/8-4	11.08.1992	1780	1830
  25/8-5 S	22.09.1994	2113	2420
  25/8-5 SR	03.08.1997	2113	2420
  25/8-6	27.06.1995	2077	2369
  25/8-7	12.08.1995	2050	2062
  25/8-8 A	11.10.1995	2425	2478
  25/8-8 B	24.10.1995	2382	2446
  25/8-8 S	24.09.1995	2236	2352
  25/8-9	28.01.1997	2096	2189
  25/8-9 A	14.02.1997	2478	2607
  25/8-10 S	05.06.1997	1761	1765
  25/8-10 S	05.06.1997	1777	1827
  25/8-16 A	23.05.2009	2133	2290
  25/8-16 S	13.05.2009	2200	2359
  25/8-17	29.10.2009	2077	2207
  25/8-17 A	15.11.2009	2694	2845
  25/8-18 S	23.10.2014	1759	1815
  25/8-19 A	19.03.2020	1986	2019
  25/8-19 S	30.12.2019	2027	2061
  25/8-20 B	28.05.2021	2104	2129
  25/8-22 S	20.07.2021	1986	2035
  25/10-1 R	03.08.1970	1775	1800
  25/10-1 R	03.08.1970	1804	1844
  25/10-1 R	03.08.1970	1859	1901
  25/10-1 R	03.08.1970	1911	1916
  25/10-1 R	03.08.1970	1928	1932
  25/10-2	25.08.1970	2085	2146
  25/10-2 R	08.07.1972	2085	2146
  25/10-3	13.09.1970	1841	1879
  25/10-3	13.09.1970	1900	1909
  25/10-4	18.01.1981	1760	1874
  25/10-4 R	13.06.1981	1758	1874
  25/10-5	17.07.1981	1906	1939
  25/10-5	17.07.1981	1950	1955
  25/10-6 S	22.03.1996	2318	2619
  25/10-7 S	08.06.1996	2238	2373
  25/10-7 S	08.06.1996	2404	2427
  25/10-8	07.04.1997	2077	2122
  25/10-8 A	27.04.1997	2662	2759
  25/10-9	27.07.2009	2310	2387
  25/10-10	02.04.2010	1856	1913
  25/10-10	02.04.2010	1940	1991
  25/10-11	10.08.2011	2313	2426
  25/10-12 S	18.01.2015	1986	2042
  25/10-13 S	19.06.2015	2136	2192
  25/10-14 S	17.01.2016	2080	2160
  25/10-15 S	02.08.2016	2104	2180
  25/10-16 A	09.08.2018	3180	3214
  25/10-16 B	18.08.2018	3771	3927
  25/10-16 C	26.08.2018	3386	3460
  25/10-16 S	30.07.2018	2175	2242
  25/10-17 S	10.02.2023	2434	2650
  25/11-3	14.10.1970	1782	1783
  25/11-5	08.05.1974	1798	1873
  25/11-6	01.10.1978	1718	1848
  25/11-7	27.10.1978	1751	1850
  25/11-7	27.10.1978	1862	1875
  25/11-8	16.10.1979	1722	1895
  25/11-9	07.12.1980	1855	1863
  25/11-10	17.02.1981	1786	1930
  25/11-10	17.02.1981	1943	1958
  25/11-11	18.03.1981	1754	1895
  25/11-12	07.05.1981	1785	1890
  25/11-13	29.05.1981	1858	1862
  25/11-14 S	13.10.1990	1903	1908
  25/11-14 SR	31.12.1990	1998	2081
  25/11-15	25.12.1991	1734	1798
  25/11-16	24.07.1992	1767	1872
  25/11-18	24.10.1994	1742	1798
  25/11-21 A	01.10.1996	1838	2628
  25/11-21 A	01.10.1996	2630	2633
  25/11-21 A	01.10.1996	2640	2645
  25/11-21 A	01.10.1996	2652	2710
  25/11-21 A	01.10.1996	2713	2968
  25/11-21 S	14.11.1995	1788	1876
  25/11-23	28.05.1999	1899	1909
  25/11-23	28.05.1999	1945	1971
  25/11-24	29.03.2007	1788	1927
  25/11-25 A	10.03.2008	2190	2230
  25/11-27	29.05.2013	1743	1805
  29/6-1	09.05.1982	1922	2083
  29/9-1	24.02.1984	2074	2151
  30/4-2	16.05.1980	1996	2313
  30/7-6	31.07.1977	2044	2084
  30/7-6 R	03.06.1978	2044	2084
  30/7-7	01.07.1979	2391	2404
  30/7-8	04.04.1981	2020	2090
  30/7-8 R	29.01.1982	2020	2090
  30/10-2	28.03.1974	2269	2414
  30/10-6	09.11.1992	2358	2427
  30/10-7	17.10.1992	2275	2330
  30/10-7	17.10.1992	2338	2365
  30/10-7	17.10.1992	2371	2374
  30/10-7	17.10.1992	2386	2392
  30/11-7	03.02.2009	2544	2614
  30/11-7 A	25.05.2009	2544	2614
  33/9-16	20.01.1993	1849	1878
  33/9-22 S	17.09.2017	1858	1897
  34/7-36 S	17.09.2014	2042	2097
  34/8-7	16.07.1992	2022	2037
  34/8-7 R	10.02.1993	2022	2037
  35/3-6	02.04.2002	1128	1145
  35/11-8 S	11.05.1996	1797	1877
  35/11-9	01.05.1997	1715	1784
  35/11-10	23.06.1997	1713	1777
  35/11-10 A	14.07.1997	1766	1876
  35/11-16 S	18.03.2014	1809	1882

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  15/5-5	05.10.1995	38
  15/5-6	16.07.1997	22
  15/6-8 A	18.04.1997	10
  15/9-11	23.12.1981	94
  15/9-13	27.05.1982	32
  15/9-16	24.08.1982	104
  15/9-17	30.03.1983	68
  15/9-18	02.03.1984	16
  15/9-19 SR	29.04.1993	5
  15/12-11 S	19.05.1997	1
  16/1-1	10.12.1967	43
  16/1-6 S	07.06.2003	4
  16/1-34 S	31.07.2021	48
  16/4-1	18.11.1984	11
  16/7-2	30.03.1982	28
  24/6-1	25.08.1985	2
  24/6-2	08.07.1998	93
  24/6-4	02.06.2003	54
  24/12-3 S	29.07.1996	8
  25/4-1	09.12.1972	39
  25/4-2	06.12.1973	1
  25/4-3	22.11.1974	10
  25/4-4	07.07.1975	13
  25/4-5	26.03.1981	73
  25/4-7	17.04.2003	52
  25/4-8	22.06.2003	23
  25/4-9 S	29.09.2003	18
  25/5-5	23.11.1995	37
  25/7-3	28.08.1995	31
  25/7-5	30.08.1997	24
  25/8-1	04.07.1970	14
  25/8-4	11.08.1992	47
  25/8-5 S	22.09.1994	14
  25/8-6	27.06.1995	59
  25/8-7	12.08.1995	9
  25/8-8 A	11.10.1995	52
  25/8-8 B	24.10.1995	55
  25/8-8 S	24.09.1995	71
  25/8-9	28.01.1997	27
  25/8-9 A	14.02.1997	54
  25/8-10 S	05.06.1997	12
  25/8-18 S	23.10.2014	27
  25/8-19 A	19.03.2020	18
  25/10-1 R	03.08.1970	25
  25/10-2 R	08.07.1972	34
  25/10-7 S	08.06.1996	135
  25/10-8	07.04.1997	28
  25/11-7	27.10.1978	22
  25/11-8	16.10.1979	49
  25/11-15	25.12.1991	62
  25/11-16	24.07.1992	102
  25/11-21 S	14.11.1995	86
  25/11-27	29.05.2013	26
  30/4-2	16.05.1980	4