TY FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	TY FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	176
  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

  Ty Formation
  
  Name

  Ty was a son of the Norse god Odin and was one of the 12 principal gods in Norse mythology.

  Well type section

  UK well 10/1-1 A from 2767 m to 2421 m, coordinates N 59°50'10.50", E 02°00'33.60" (Fig 5.48) . No cores.

  Well reference section

  Norwegian well 15/3-1 S from 2715 m to 2556 m, coordinates N 58°50'57.00", E 01°43'13.25" (Fig 5.49) . No cores.

  Thickness

  The Ty Formation is 346 m thick in the type well. The formation has its depocenter west of the type well, and thins towards the east. It is 159 m thick in the reference well.

  Lithology

  The Ty Formation consists of clean sandstones, generally massive and clear to light grey in colour. Distally the sandstones are interbedded with dark grey shales, but the sandstone bodies tend to be clean.

  Basal stratotype

  The Ty Formation rests on the Shetland Group . The lower boundary represents a distinct change from calcareous sediments into clean sandstones with regular gamma-ray and velocity patterns. The log response changes from low gamma-ray readings and high velocity in the Shetland Group , to higher gamma-ray readings and lower velocity in the Ty Formation sandstones (Fig 5.48) . The boundary may be confused by interbedded shales in the Ty Formation, but the distinct drop in carbonate content distinguishes the formation from the underlying sediments.

  Characteristics of the upper boundary

  The upper boundary is characterized by the transition into the shales of the Lista Formation with higher gamma-ray readings and lower velocity (Fig 5.48 , 5.49). Where the Heimdal Formation overlies the Ty Formation, the boundary is recognized by the change to slightly more erratic log patterns. This boundary may be difficult to identify, but the two formations are normally separated by the Lista Formation .

  Distribution

  The Ty Formation has been identified in the southern Viking Graben, especially in the north-western part of quadrant 25 and the northernmost part of quadrant 15. Its approximate distribution on the Norwegian continental shelf is outlined in (Fig 5.47) .

  Age

  Early Paleocene.

  Depositional environment

  The Ty Formation was deposited in a deep marine fan system which built out from the west.

  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]
  3/8-1	29.12.2010	2719	2744
  15/2-1	24.02.1982	2572	2640
  15/3-1 S	06.07.1975	2556	2715
  15/3-2	24.01.1977	2437	2648
  15/3-2 R	27.11.1977	2437	2648
  15/3-3	09.08.1979	2653	2692
  15/3-4	30.03.1982	2612	2763
  15/3-5	13.05.1984	2757	2803
  15/3-6	05.01.1999	2630	2715
  15/3-7	01.09.2001	2589	2682
  15/3-8	11.04.2006	2603	2740
  15/3-9	13.08.2010	2610	2714
  15/3-11	09.08.2018	2664	2776
  15/3-12 A	03.03.2020	2675	2679
  15/3-12 S	20.01.2020	2673	2769
  15/5-1	08.04.1978	2610	2644
  15/5-2	16.12.1978	2650	2705
  15/5-5	05.10.1995	2501	2583
  15/5-6	16.07.1997	2616	2656
  15/5-7	07.09.2008	2660	2719
  15/5-7 A	13.10.2008	2660	2719
  15/6-3	19.12.1974	2612	2698
  15/6-5	29.11.1977	2707	2765
  15/6-12	09.02.2011	2559	2751
  15/6-13	15.05.2015	2582	2686
  15/6-13 A	03.06.2015	2596	2737
  15/6-13 B	29.06.2015	2712	2807
  15/6-16 S	28.06.2019	2703	2721
  15/9-1	30.05.1977	2625	2732
  15/9-3	03.04.1979	2595	2636
  15/9-6	07.09.1980	2650	2665
  15/9-8	25.05.1981	2734	2788
  15/9-10	07.11.1981	2597	2667
  15/9-14	27.06.1982	2698	2756
  15/9-18	02.03.1984	2665	2702
  15/9-21 S	23.05.1998	3352	3428
  15/9-23	03.01.2010	2524	2548
  15/12-18 A	11.12.2007	2945	2965
  15/12-18 S	07.11.2007	2670	2712
  15/12-25	26.03.2021	2766	2808
  16/1-14	30.11.2010	2135	2145
  16/1-24	16.03.2015	2116	2147
  16/1-35 S	28.02.2023	2308	2332
  16/4-4	23.03.2007	2271	2350
  16/4-7	21.08.2013	2267	2314
  16/4-10	07.03.2016	2240	2317
  16/4-12	08.10.2021	2054	2101
  16/7-10	13.09.2011	2349	2467
  24/6-1	25.08.1985	2758	2802
  24/6-2	08.07.1998	2622	2678
  24/9-1	03.07.1976	2545	2659
  24/9-2	22.07.1977	2543	2608
  24/9-5	26.01.1994	2728	2828
  24/12-2	21.01.1982	2490	2512
  24/12-2	21.01.1982	2567	2617
  25/1-3	27.01.1972	2711	2734
  25/1-4	30.05.1974	2643	2687
  25/1-6	18.03.1978	2675	2799
  25/2-1	21.09.1973	2538	2552
  25/2-1	21.09.1973	2557	2653
  25/2-2	11.07.1974	2563	2703
  25/2-3	09.10.1974	2582	2726
  25/2-4	20.10.1975	2590	2606
  25/2-5	04.08.1976	2508	2660
  25/2-6	15.11.1977	2563	2631
  25/2-10 S	19.03.1986	2811	2912
  25/2-10 SR	22.09.1987	2815	2916
  25/2-12	12.11.1988	2580	2622
  25/2-12 A	06.04.1989	2580	2622
  25/2-13	25.01.1990	2586	2651
  25/2-15	13.01.1993	2502	2583
  25/2-15 R	01.03.1993	2506	2587
  25/2-15 R2	11.04.1993	2506	2587
  25/2-16 S	13.09.2001	2868	2878
  25/2-16 S	13.09.2001	2898	2907
  25/2-19 A	08.10.2017	2675	2676
  25/2-23 S	01.04.2022	2722	2752
  25/2-23 S	01.04.2022	2791	2870
  25/4-3	22.11.1974	2550	2646
  25/4-4	07.07.1975	2517	2674
  25/4-5	26.03.1981	2550	2659
  25/5-1	01.08.1987	2400	2570
  25/5-1 A	16.09.1987	2405	2590
  25/5-2	04.07.1989	2502	2607
  25/5-3	26.03.1990	2211	2310
  25/5-4	07.03.1991	2434	2559
  25/5-7	23.10.2010	2391	2489
  25/6-1	03.02.1986	2154	2164
  25/6-2	29.05.1992	2168	2207
  25/6-3	11.11.1999	2279	2335
  25/6-4 S	15.02.2012	2253	2293
  25/6-5 S	10.04.2015	2289	2367
  25/6-6 S	22.04.2019	2324	2371
  25/7-1 S	19.07.1986	2414	2572
  25/7-2	18.07.1990	2529	2698
  25/7-3	28.08.1995	2472	2485
  25/7-4 S	21.06.1997	2371	2512
  25/7-5	30.08.1997	2526	2688
  25/7-7	09.11.2019	2516	2702
  25/7-8 S	09.01.2020	2355	2494
  25/7-10	06.09.2022	2728	2775
  25/8-2	01.10.1975	2210	2288
  25/8-5 S	22.09.1994	2529	2600
  25/8-5 SR	03.08.1997	2529	2600
  25/8-6	27.06.1995	2485	2527
  25/8-7	12.08.1995	2157	2209
  25/8-8 A	11.10.1995	2554	2601
  25/8-8 S	24.09.1995	2453	2498
  25/8-9	28.01.1997	2228	2304
  25/8-13	20.11.2001	2099	2183
  25/8-16 A	23.05.2009	2290	2306
  25/8-16 S	13.05.2009	2359	2395
  25/8-17	29.10.2009	2207	2233
  25/8-17 A	15.11.2009	2858	2945
  25/8-19 A	19.03.2020	2071	2187
  25/8-19 S	30.12.2019	2123	2227
  25/8-20 B	28.05.2021	2180	2191
  25/8-20 B	28.05.2021	2210	2221
  25/8-20 S	10.05.2021	2259	2303
  25/8-21 S	20.06.2021	2161	2286
  25/8-22 S	20.07.2021	2035	2097
  25/10-2 R	08.07.1972	2270	2375
  25/10-6 S	22.03.1996	2637	2686
  25/10-7 S	08.06.1996	2465	2498
  25/10-10	02.04.2010	2036	2069
  25/10-11	10.08.2011	2426	2737
  25/10-13 S	19.06.2015	2362	2405
  25/10-14 S	17.01.2016	2222	2282
  25/11-1	09.07.1967	1868	1895
  25/11-3	14.10.1970	1824	1844
  25/11-6	01.10.1978	1877	1903
  25/11-13	29.05.1981	1875	1908
  26/4-1	17.07.1987	2246	2322
  30/10-7	17.10.1992	2430	2436
  30/10-7	17.10.1992	2565	2574
  30/11-1	14.03.1975	2587	2643
  35/8-5 S	20.07.2003	1665	1725
  35/9-6 S	07.12.2010	1628	1677
  35/9-11 A	21.05.2014	1634	1704
  35/9-11 S	15.04.2014	1634	1704
  35/11-8 S	11.05.1996	2021	2041
  35/11-8 S	11.05.1996	2063	2087
  35/11-9	01.05.1997	1910	1973
  35/11-16 S	18.03.2014	2015	2134
  35/11-17	01.05.2014	1674	1778

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  15/12-25	26.03.2021	28
  16/4-4	23.03.2007	26
  25/2-10 S	19.03.1986	4
  25/10-2 R	08.07.1972	1
  25/11-1	09.07.1967	17
  26/4-1	17.07.1987	40