TARBERT FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	TARBERT FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	162
  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.	BRENT GP

• Level below

  Level below

  Lithostrat. unit

• Description

  Tarbert Formation
  
  Name

  Named by Deegan and Scull (1977) who gave it "sub-unit" status.

  Well type section

  UK well 211/29-3 (Shell) from 2602.5 m to 2633.5 m, coord N 61°08'06", E 01'36.5" (Fig 3.10) .

  Well reference sections

  Norwegian wells 33/9-1 (Mobil) from 2464 m to 2509m, coord N 61°15'07.05", E 01°50'25.8" (Fig 3.11) . 31/4-4 (Norsk Hydro) from 2680 m to 2695m, coord N 60°40'01.12", E 03°06'54.12" (Fig 3.17) , and 30/6-7 (Norsk Hydro) from 2632 m to 2646 m, coord N 60°38'39.49", E02°45'21.74" (Fig 3.16) .

  Thickness

  31 m in the type well, 45 m in 33/9-1 , 15 m in 31/4-4 and 14 m in 30/6-7 .

  Lithology

  In the type well section it consists of grey to brown relatively massive fine to medium grained sandstone with subordinate thin siltstone, shale and coal beds and some calcareous bands. On the Horda Platform the formation usually constitutes one or more "coarsening upward" sequences of fine to medium, occasionally coarse, micaceous and carbonaceous sandstones, which become increasingly silty and argillaceous downward. Stringers of calcite cemented sandstone and coal beds occur in this area.

  Boundaries

  The base of the formation is taken at the top of the last "fining upward” unit of the Ness Formation , i.e. at the top of an argillaceous bed or coal-bed. The upper boundary coincides with the top of the Brent Group (see above).

  Distribution

  The distribution of the formation is not known in detail, but is usually well developed within the western part of the East Shetland Basin, including the central and western part of the Viking Graben. The formation has a sporadic distribution on the Horda Platform.

  Age

  Bajocian to Bathonian.

  Depositional environment

  The environment of deposition of the formation was marginal marine. In places it may rest with minor disconformity on the coaly Ness Formation (Hodson, 1975), and possibly in part represents reworked delta plain deposits at the onset of the marine transgression which deposited the overlying Upper Jurassic argillaceous sediments.

  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]
  25/2-23 S	01.04.2022	4578	4766
  29/3-1	15.09.1986	3523	3562
  29/6-1	09.05.1982	4205	4221
  30/2-2	04.05.1985	3935	3959
  30/2-3	05.10.1992	3792	3808
  30/2-5 S	12.07.2020	4203	4226
  30/3-5 S	19.06.1992	4050	4059
  30/3-6 S	06.03.1994	5214	5299
  30/3-7 A	29.01.1998	6349	6419
  30/3-7 B	04.08.1998	5514	5593
  30/3-7 BR	17.11.2001	5514	5593
  30/3-7 S	12.12.1995	4692	4702
  30/3-7 S	12.12.1995	4706	4718
  30/3-8 A	23.05.2000	4095	4100
  30/3-8 S	04.05.2000	4095	4100
  30/3-11 S	09.09.2022	4396	4417
  30/4-1	14.05.1979	5182	5211
  30/4-2	16.05.1980	3780	3862
  30/4-3 S	09.10.2016	4250	4377
  30/5-2	21.12.1996	3472	3710
  30/5-4 A	16.11.2022	4710	5001
  30/6-6	24.03.1982	2820	2861
  30/6-7	24.08.1982	2632	2646
  30/6-8	06.08.1982	3024	3067
  30/6-19	21.06.1986	2857	2866
  30/6-19 R	25.05.1994	2856	2865
  30/6-22	13.07.1988	2875	2887
  30/6-22 R	02.06.1994	2874	2886
  30/6-31 S	25.04.2020	2812	2817
  30/7-6 R	03.06.1978	3792	3887
  30/7-8 R	29.01.1982	4058	4153
  30/8-1 S	01.03.1995	3433	3774
  30/8-1 SR	01.03.1996	3433	3774
  30/8-3	05.01.1998	3252	3473
  30/8-4 S	04.02.2009	3899	4153
  30/9-4 S	30.03.1985	3295	3356
  30/9-6	21.04.1987	2591	2597
  30/9-7	23.12.1988	2810	2903
  30/9-8 R	25.09.1989	2788	2882
  30/9-9	06.11.1989	2294	2315
  30/9-10	21.09.1990	2784	2871
  30/9-11	19.11.1990	2384	2390
  30/9-11 A	29.12.1990	2551	2553
  30/9-12	09.05.1991	2660	2676
  30/9-12 A	04.06.1991	2869	2887
  30/9-12 AR	11.07.2002	2873	2891
  30/9-13 S	11.10.1991	3024	3194
  30/9-13 SR	17.07.2002	3028	3198
  30/9-14	14.05.1993	3060	3236
  30/9-16	08.08.1994	2718	2820
  30/9-18	11.04.1995	2646	2750
  30/9-19	22.10.1998	3093	3265
  30/9-19 A	21.12.1998	3210	3473
  30/9-20 S	11.02.2002	2806	2923
  30/9-21 A	15.06.2008	3866	4054
  30/9-21 S	30.04.2008	3774	3962
  30/9-22	10.03.2009	2867	2995
  30/9-25	20.09.2013	2945	3137
  30/9-26 S	22.11.2014	4307	4568
  30/9-27 S	25.08.2015	3656	3946
  30/9-28 S	26.02.2016	2916	3068
  30/9-B-18	25.09.1992	3683	3695
  30/9-B-18 A	23.10.1992	3601	3612
  30/10-6	09.11.1992	4666	5089
  30/11-5	09.01.1997	3249	3443
  30/11-6 S	02.07.2004	3150	3311
  30/11-7 A	25.05.2009	4007	4215
  30/11-8 A	03.07.2011	3915	4159
  30/11-8 S	20.05.2011	3529	3733
  30/11-9 A	08.01.2014	3615	3896
  30/11-9 S	13.11.2013	3269	3549
  30/11-10	26.12.2014	3445	3744
  30/11-10 A	13.02.2015	3610	3858
  30/11-11 A	07.04.2016	3796	4016
  30/11-11 S	19.03.2016	3291	3532
  30/11-12 A	20.05.2016	3962	4173
  30/11-12 S	04.05.2016	3322	3599
  30/11-13	06.06.2016	2980	3218
  30/11-14	06.07.2016	2958	3204
  30/11-14 B	23.07.2016	3634	3901
  30/12-1	07.03.1994	2903	2989
  30/12-2	27.08.2019	3040	3137
  31/1-1	15.02.2008	2415	2450
  31/1-2 A	29.01.2021	3586	3606
  31/1-2 S	12.01.2021	3205	3218
  31/3-2	30.04.1984	1939	1952
  31/4-4	17.02.1981	2680	2695
  31/4-11	12.09.2000	2644	2654
  31/5-7	06.03.2020	2424	2435
  31/7-1	22.06.2016	2373	2390
  31/7-2 S	08.07.2017	2377	2450
  33/5-2	18.11.1981	4054	4079
  33/6-5 S	16.10.2021	3350	3358
  33/9-1	04.06.1974	2464	2506
  33/9-3	14.11.1974	2411	2458
  33/9-5	01.01.1976	2605	2652
  33/9-6	31.08.1976	2995	3030
  33/9-12	03.08.1987	2461	2498
  33/9-15	08.06.1992	2945	2958
  33/9-16	20.01.1993	2815	2826
  33/9-17	04.05.1994	3187	3202
  33/9-20 S	09.09.2006	5390	5427
  33/9-21 A	30.04.2009	5902	5939
  33/9-21 B	11.06.2009	5901	5939
  33/9-21 B	11.06.2009	6784	6808
  33/9-21 S	19.03.2009	5867	5903
  33/12-6	21.06.1976	2973	3035
  33/12-7	27.04.1989	3022	3235
  33/12-8 A	16.05.2002	2866	3127
  33/12-8 A	16.05.2002	3182	3630
  33/12-8 A	16.05.2002	3902	4167
  33/12-8 A	16.05.2002	4554	4770
  33/12-8 S	26.04.2002	2814	2906
  33/12-9 S	08.01.2012	3420	3534
  34/4-14 S	19.05.2015	4344	4350
  34/4-15 A	12.08.2020	3689	3704
  34/4-15 S	15.07.2020	3410	3426
  34/4-16 S	31.03.2021	3457	3468
  34/6-1 S	28.08.2002	3470	3476
  34/7-12	17.12.1987	2169	2213
  34/7-14	02.12.1989	2189	2227
  34/7-15 S	03.09.1990	4376	4434
  34/7-17	07.04.1991	2461	2510
  34/7-17 A	04.05.1991	2495	2521
  34/7-19	27.12.1991	2456	2500
  34/7-19 R	12.07.1994	2463	2507
  34/7-20	27.08.1992	2613	2630
  34/7-21	11.12.1992	2692	2763
  34/7-21 A	12.02.1993	3306	3360
  34/7-22	01.10.1993	2224	2266
  34/7-23 S	03.04.1994	3328	3375
  34/7-25 S	14.09.1996	2920	2980
  34/7-27	07.10.1998	2777	2837
  34/7-28	02.03.1998	2792	2805
  34/7-29 S	14.04.1998	2894	2927
  34/7-29 SR	17.03.1999	2893	2926
  34/7-31	13.04.2001	2602	2650
  34/7-36 S	17.09.2014	3590	3600
  34/8-1	08.03.1986	2767	2803
  34/8-3 A	31.10.1988	3031	3071
  34/8-5	01.04.1991	2855	2891
  34/8-6	03.11.1991	3686	3706
  34/8-7	16.07.1992	4633	4655
  34/8-7 R	10.02.1993	4633	4655
  34/8-8	24.08.1992	2921	2935
  34/8-8 R	09.03.1993	2921	2935
  34/8-9 S	28.12.1992	2923	2943
  34/8-11	08.02.1994	2869	2883
  34/8-13 A	13.05.2009	3414	3443
  34/8-13 S	26.06.2009	3896	3907
  34/8-14 A	01.12.2008	3500	3540
  34/8-14 B	25.01.2009	3486	3576
  34/8-14 C	08.12.2008	3544	3629
  34/8-14 D	10.02.2009	3596	3657
  34/8-14 S	21.10.2008	3187	3244
  34/8-15 S	19.02.2013	3465	3478
  34/8-17 S	14.03.2014	3951	3973
  34/10-1	08.09.1978	1783	1797
  34/10-5	02.01.1980	1896	1970
  34/10-6	22.01.1980	2075	2105
  34/10-8	25.05.1980	1821	1853
  34/10-16	11.04.1983	3171	3217
  34/10-16 R	27.09.1983	3168	3214
  34/10-17	08.07.1983	2685	2717
  34/10-18	30.08.1983	2373	2412
  34/10-21	22.10.1984	3287	3346
  34/10-23	13.10.1985	4084	4098
  34/10-33	15.12.1988	3186	3234
  34/10-33 A	03.02.1989	3347	3451
  34/10-33 B	10.07.1989	3215	3353
  34/10-33 B	10.07.1989	3679	3897
  34/10-33 C	01.08.1989	3215	3345
  34/10-33 CR	27.04.1990	3215	3345
  34/10-34	31.05.1991	1993	2082
  34/10-36	13.07.1992	3361	3448
  34/10-37 A	03.04.1995	2660	2718
  34/10-39 S	20.06.1995	2562	2605
  34/10-40 S	13.10.1995	5336	5550
  34/10-41 S	28.08.1997	2553	2644
  34/10-42 S	19.09.1999	4211	4217
  34/10-45 B	24.11.2003	7851	7928
  34/10-46 A	16.03.2002	6475	6592
  34/10-46 A	16.03.2002	6709	6860
  34/10-46 B	22.05.2002	6522	6592
  34/10-46 S	30.01.2002	5245	5273
  34/10-47 A	14.11.2002	2632	2729
  34/10-47 S	02.11.2002	2876	2910
  34/10-47 S	02.11.2002	3580	3804
  34/10-48 A	15.02.2005	5158	5460
  34/10-48 A	15.02.2005	5461	5611
  34/10-48 S	22.12.2004	5161	5311
  34/10-48 S	22.12.2004	5999	6143
  34/10-48 S	22.12.2004	6640	7304
  34/10-49 A	10.06.2006	3020	3137
  34/10-52 A	06.08.2011	3282	3314
  34/10-52 B	22.08.2011	3501	3608
  34/10-53 A	01.06.2011	4544	4619
  34/10-53 S	24.03.2011	3635	3719
  34/10-54 A	18.04.2014	4076	4146
  34/10-54 S	11.02.2014	3952	3980
  34/11-1	25.10.1994	4045	4060
  34/11-2 S	17.05.1996	4068	4085
  34/11-3	16.01.1997	4035	4050
  34/11-4	14.04.1999	4142	4148
  34/11-5 S	03.07.2006	7086	7110
  34/11-6 S	26.01.2017	6837	6944
  34/12-1	30.04.2008	4321	4331
  35/7-1 S	15.08.2011	4293	4340
  35/8-1	24.01.1981	3516	3578
  35/8-2	21.05.1982	3666	3717
  35/8-3	15.10.1988	3810	3820
  35/8-5 S	20.07.2003	3840	3893
  35/9-6 S	07.12.2010	3426	3486
  35/9-7	14.04.2012	2911	2922
  35/9-8	11.04.2013	3146	3155
  35/9-11 A	21.05.2014	3441	3470
  35/9-11 S	15.04.2014	3442	3471
  35/9-12 S	26.12.2014	3492	3496
  35/10-1	16.01.1992	3324	3344
  35/10-2	22.08.1996	4149	4183
  35/10-4 S	10.10.2018	3625	3640
  35/10-7 A	27.12.2021	3341	3349
  35/10-7 S	11.12.2021	3248	3260
  35/11-2	04.12.1987	3370	3380
  35/11-3 S	09.09.1989	3431	3470
  35/11-5	03.11.1991	3206	3216
  35/11-6	20.04.1992	3516	3526
  35/11-8 S	11.05.1996	3377	3387
  35/11-11	22.05.1998	3005	3008
  35/11-18	27.09.2015	3492	3600
  35/11-18 A	16.12.2015	3540	3657
  35/11-20 B	15.09.2016	4596	4607
  35/11-22 S	02.02.2019	3250	3259
  35/12-1	24.04.1992	2886	2890

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  29/3-1	15.09.1986	35
  29/6-1	09.05.1982	1
  30/2-2	04.05.1985	20
  30/2-3	05.10.1992	16
  30/2-5 S	12.07.2020	3
  30/3-6 S	06.03.1994	30
  30/3-7 S	12.12.1995	23
  30/3-11 S	09.09.2022	13
  30/4-2	16.05.1980	73
  30/5-2	21.12.1996	101
  30/6-8	06.08.1982	33
  30/6-19	21.06.1986	8
  30/6-22	13.07.1988	12
  30/7-8 R	29.01.1982	91
  30/8-1 S	01.03.1995	194
  30/8-3	05.01.1998	93
  30/8-4 S	04.02.2009	75
  30/9-4 S	30.03.1985	24
  30/9-6	21.04.1987	4
  30/9-7	23.12.1988	53
  30/9-8 R	25.09.1989	82
  30/9-9	06.11.1989	19
  30/9-10	21.09.1990	86
  30/9-11	19.11.1990	6
  30/9-11 A	29.12.1990	1
  30/9-12	09.05.1991	13
  30/9-12 A	04.06.1991	12
  30/9-13 S	11.10.1991	161
  30/9-14	14.05.1993	158
  30/9-16	08.08.1994	78
  30/9-19	22.10.1998	63
  30/9-19 A	21.12.1998	42
  30/9-20 S	11.02.2002	58
  30/9-22	10.03.2009	83
  30/9-25	20.09.2013	6
  30/10-6	09.11.1992	80
  30/11-6 S	02.07.2004	103
  30/11-7 A	25.05.2009	86
  30/11-8 A	03.07.2011	34
  30/11-8 S	20.05.2011	55
  30/11-9 A	08.01.2014	162
  30/11-10	26.12.2014	55
  30/11-14	06.07.2016	201
  30/12-1	07.03.1994	63
  33/5-2	18.11.1981	24
  33/9-1	04.06.1974	22
  33/9-3	14.11.1974	22
  33/9-5	01.01.1976	17
  33/9-6	31.08.1976	33
  33/9-12	03.08.1987	31
  33/12-7	27.04.1989	17
  34/4-16 S	31.03.2021	11
  34/7-12	17.12.1987	44
  34/7-14	02.12.1989	33
  34/7-15 S	03.09.1990	14
  34/7-17	07.04.1991	47
  34/7-17 A	04.05.1991	20
  34/7-19	27.12.1991	44
  34/7-20	27.08.1992	17
  34/7-22	01.10.1993	39
  34/8-1	08.03.1986	35
  34/8-3 A	31.10.1988	37
  34/8-5	01.04.1991	34
  34/8-7	16.07.1992	1
  34/8-8	24.08.1992	14
  34/8-9 S	28.12.1992	7
  34/8-11	08.02.1994	15
  34/8-13 A	13.05.2009	26
  34/8-13 S	26.06.2009	1
  34/8-14 A	01.12.2008	35
  34/8-14 S	21.10.2008	50
  34/10-1	08.09.1978	5
  34/10-5	02.01.1980	35
  34/10-8	25.05.1980	22
  34/10-16	11.04.1983	39
  34/10-17	08.07.1983	32
  34/10-18	30.08.1983	18
  34/10-21	22.10.1984	54
  34/10-23	13.10.1985	14
  34/10-33	15.12.1988	40
  34/10-33 B	10.07.1989	24
  34/10-34	31.05.1991	86
  34/10-36	13.07.1992	54
  34/10-37 A	03.04.1995	52
  34/10-42 S	19.09.1999	0
  34/10-48 S	22.12.2004	33
  34/10-53 A	01.06.2011	30
  34/10-54 S	11.02.2014	23
  34/11-1	25.10.1994	10
  34/11-2 S	17.05.1996	2
  34/11-3	16.01.1997	9
  35/8-1	24.01.1981	47
  35/8-2	21.05.1982	50
  35/8-5 S	20.07.2003	38
  35/9-6 S	07.12.2010	26
  35/9-11 A	21.05.2014	11
  35/10-1	16.01.1992	13
  35/10-2	22.08.1996	29
  35/11-2	04.12.1987	10
  35/11-3 S	09.09.1989	24
  35/11-5	03.11.1991	1
  35/11-6	20.04.1992	10
  35/11-18	27.09.2015	54