ETIVE FM

hide details Export:  PDF

• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	ETIVE FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	35
  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

  Etive Formation
  
  Name

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

  Well type section

  UK well 211/29-3 (Shell) from 2772 m to 2783 m, coord N 61°08'06", E 01°43'36.5" (Fig 3.10) .

  Well reference sections

  Norwegian wells 33/9-1 (Mobil) from 2575 m to 2602 m, coord N 61°15'07.5", E 01°50'25.8" (Fig 3.11) . 30/6-7 (Norsk Hydro) from 2727 m to 2786 m 1), coord N 60°38'39.49", E 02°45'21.74" (Fig 3.16) . and 31/4-4 (Norsk Hydro) from 2721 m to 2758 m, coord N 60°40'01.12", E 03°06'54.12" (Fig 3.17) .

  Thickness

  11 m in the type well, 27 m in 33/9-1 , 59 m in 30/6-7 and 37 m in 31/4-4 .

  Lithology

  The formation consists of massive grey-brown to clear, fine to coarse, occasionally pebbly and cross-bedded sandstones. The mica-content is generally low. Calcite cemented stringers are also present, especially on the Horda Platform.

  Boundaries

  The formation is characterised by low gamma ray readings. This characteristic and the low mica content distinguish it from the underlying Rannoch Formation. The lower boundary may, however, be transitional in places. The formation is often found to cut into and occasionally through the underlying formations, thus giving a “blocky” gamma ray log character either above a truncated Rannoch Formation , or directly above marine shales of the Dunlin Group (ref. well 31/4-4 ). The upper boundary is taken at the first significant shale or coal in the overlying Ness Formation .

  Distribution

  The distribution of the Etive Formation is essentially the same as that of the Brent Group .

  Age

  Bajocian.

  Depositional environment

  The formation has been interpretated as upper shoreface, barrier bar, mouth bar and distributary channel deposits.

  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.

  
  Footnotes

  • 1): The lower part of the Etive Formation as defined in reference well 30/6-7 has been defined as the Oseberg Formation in Graue et al. (1987) with Top Oseberg Formation at 2739m.

  
  References

  • Graue, E., Helland-Hansen, W., Johnsen, J., Lømo, L., Nøttvedt, A., Rønning, K., Ryseth and A., Steel, R. Advance and retreat of Brent Delta system, Norwegian North Sea. 915 - 937 in: Brooks, J. and Glennie, K. (eds.) 1987: Petroleum Geology of North West Europe.

• Wellbores penetrating

  Wellbores penetrating

  Wellbore name	Wellbore completion date	Top depth [m]	Bottom depth [m]
  29/3-1	15.09.1986	3852	3862
  29/6-1	09.05.1982	4458	4474
  29/9-1	24.02.1984	4394	4406
  30/2-1	12.10.1982	3720	3778
  30/2-2	04.05.1985	4070	4075
  30/2-3	05.10.1992	3934	3944
  30/2-5 S	12.07.2020	4316	4332
  30/3-1 R	26.04.1982	3826	3852
  30/3-2 R	16.02.1981	2879	2882
  30/3-3	30.05.1983	3034	3116
  30/3-4	12.06.1985	2873	2949
  30/3-4 R	18.11.2001	2875	2951
  30/3-5 S	19.06.1992	4127	4142
  30/3-6 S	06.03.1994	5442	5481
  30/3-7 A	29.01.1998	6504	6517
  30/3-7 B	04.08.1998	5202	5229
  30/3-7 B	04.08.1998	5674	5693
  30/3-7 BR	17.11.2001	5202	5229
  30/3-7 BR	17.11.2001	5674	5693
  30/3-7 S	12.12.1995	4897	4910
  30/3-7 S	12.12.1995	5056	5063
  30/3-8 A	23.05.2000	4225	4250
  30/3-8 A	23.05.2000	4801	4821
  30/3-8 A	23.05.2000	4858	6208
  30/3-8 S	04.05.2000	4218	4243
  30/3-8 S	04.05.2000	4780	4791
  30/3-11 S	09.09.2022	4528	4535
  30/4-1	14.05.1979	5320	5340
  30/4-2	16.05.1980	4024	4036
  30/4-3 S	09.10.2016	4549	4556
  30/6-1	22.09.1979	2320	2345
  30/6-2	11.12.1979	2211	2237
  30/6-4	11.05.1981	2630	2686
  30/6-5	15.08.1981	2865	2958
  30/6-6	24.03.1982	2931	2965
  30/6-7	24.08.1982	2727	2737
  30/6-8	06.08.1982	3135	3171
  30/6-9	16.12.1982	2554	2620
  30/6-9 R	12.05.1990	2552	2618
  30/6-10	02.12.1982	2541	2575
  30/6-10 A	03.03.1983	2572	2608
  30/6-11	30.03.1983	3459	3561
  30/6-13	14.05.1983	2628	2671
  30/6-13 R	11.09.1986	2628	2671
  30/6-14	08.02.1984	2560	2589
  30/6-15	05.09.1984	2884	2902
  30/6-16	21.01.1985	2856	2868
  30/6-19	21.06.1986	2905	2915
  30/6-19 R	25.05.1994	2904	2914
  30/6-22	13.07.1988	2916	2938
  30/6-22 R	02.06.1994	2915	2937
  30/6-23	01.07.1990	2828	2836
  30/6-25 S	06.01.1999	2699	2704
  30/6-25 S	06.01.1999	2889	2904
  30/6-30	18.11.2018	3336	3350
  30/7-6 R	03.06.1978	4001	4035
  30/7-8 R	29.01.1982	4250	4283
  30/9-1	29.01.1983	2735	2783
  30/9-2	12.07.1983	2698	2767
  30/9-2 R	07.07.1986	2698	2767
  30/9-3	26.02.1984	2971	3045
  30/9-3 A	20.05.1984	3059	3133
  30/9-7	23.12.1988	3093	3110
  30/9-8 R	25.09.1989	3120	3135
  30/9-9	06.11.1989	2390	2408
  30/9-16	08.08.1994	2977	2989
  30/9-19	22.10.1998	3485	3490
  30/9-19 A	21.12.1998	3712	3715
  30/9-23	21.08.2009	2806	2812
  30/9-28 S	26.02.2016	3281	3301
  30/9-B-18	25.09.1992	3818	3825
  30/9-B-18 A	23.10.1992	3686	3694
  30/9-B-18 A	23.10.1992	4769	4787
  30/11-7	03.02.2009	4002	4017
  30/11-8 A	03.07.2011	4412	4425
  30/11-8 S	20.05.2011	3976	3993
  30/11-10	26.12.2014	3992	3997
  30/11-14	06.07.2016	3401	3405
  30/11-14 B	23.07.2016	4123	4129
  31/1-1	15.02.2008	2514	2564
  31/1-2 A	29.01.2021	3682	3694
  31/1-2 S	12.01.2021	3293	3301
  31/2-21 S	04.06.2014	2998	3013
  31/3-2	30.04.1984	1966	2006
  31/3-4	05.01.2014	2114	2122
  31/4-4	17.02.1981	2721	2798
  31/4-6	20.04.1982	2356	2380
  31/4-A-13 C	26.07.2022	7062	7068
  31/5-7	06.03.2020	2487	2510
  31/7-1	22.06.2016	2415	2425
  32/4-1	04.12.1996	1655	1680
  32/4-3 S	26.10.2019	1645	1669
  33/9-1	04.06.1974	2567	2596
  33/9-3	14.11.1974	2508	2540
  33/9-5	01.01.1976	2718	2774
  33/9-6	31.08.1976	3086	3103
  33/9-12	03.08.1987	2504	2517
  33/9-14	09.04.1988	2792	2836
  33/9-15	08.06.1992	3003	3007
  33/9-19 A	09.08.1996	2840	2939
  33/9-19 S	23.07.1996	2689	2742
  33/9-20 S	09.09.2006	5477	5502
  33/9-21 S	19.03.2009	5927	6051
  33/12-6	21.06.1976	3216	3250
  33/12-7	27.04.1989	3235	3248
  33/12-8 A	16.05.2002	5041	5075
  33/12-8 S	26.04.2002	3075	3098
  33/12-9 S	08.01.2012	3706	3727
  34/6-1 S	28.08.2002	3512	3583
  34/7-5	16.03.1985	2531	2564
  34/7-12	17.12.1987	2252	2269
  34/7-13	13.04.1988	2493	2523
  34/7-14	02.12.1989	2305	2343
  34/7-15 S	03.09.1990	4460	4513
  34/7-16	13.08.1990	2390	2434
  34/7-16 R	15.10.1990	2391	2435
  34/7-16 R2	05.07.1994	2390	2434
  34/7-17	07.04.1991	2559	2631
  34/7-17 A	04.05.1991	2572	2650
  34/7-18	17.09.1991	2298	2328
  34/7-19	27.12.1991	2528	2582
  34/7-19 R	12.07.1994	2535	2589
  34/7-20	27.08.1992	2649	2695
  34/7-21	11.12.1992	2865	2903
  34/7-22	01.10.1993	2356	2375
  34/7-25 S	14.09.1996	3086	3101
  34/7-27	07.10.1998	2837	2887
  34/7-32	27.10.2001	2535	2557
  34/7-33	15.10.2008	2470	2499
  34/8-1	08.03.1986	2851	2900
  34/8-3	14.09.1988	2867	2897
  34/8-3 A	31.10.1988	3101	3131
  34/8-5	01.04.1991	2970	2983
  34/8-6	03.11.1991	3724	3757
  34/8-7	16.07.1992	4699	4714
  34/8-7 R	10.02.1993	4699	4714
  34/8-8	24.08.1992	2967	3008
  34/8-8 R	09.03.1993	2967	3007
  34/8-9 S	28.12.1992	2956	2963
  34/8-10 S	09.12.1993	2888	2897
  34/8-11	08.02.1994	2908	2949
  34/8-13 S	26.06.2009	3945	3953
  34/8-14 A	01.12.2008	3572	3617
  34/8-14 B	25.01.2009	3678	3809
  34/8-14 C	08.12.2008	3684	3722
  34/8-14 D	10.02.2009	3705	3752
  34/8-14 S	21.10.2008	3301	3337
  34/8-15 S	19.02.2013	3507	3546
  34/10-1	08.09.1978	1833	1871
  34/10-2	08.12.1978	3070	3083
  34/10-3	07.06.1979	1978	2002
  34/10-3 R	10.10.1987	1975	1999
  34/10-5	02.01.1980	2035	2070
  34/10-6	22.01.1980	2165	2197
  34/10-8	25.05.1980	1975	2005
  34/10-9	09.05.1980	1836	1867
  34/10-9 R	03.07.1980	1836	1867
  34/10-12	12.09.1981	2176	2198
  34/10-14	19.03.1982	1976	2003
  34/10-16	11.04.1983	3399	3412
  34/10-16 R	27.09.1983	3396	3409
  34/10-17	08.07.1983	2934	2937
  34/10-18	30.08.1983	2495	2524
  34/10-21	22.10.1984	3497	3503
  34/10-23	13.10.1985	4243	4287
  34/10-33	15.12.1988	3365	3374
  34/10-33 A	03.02.1989	3747	3758
  34/10-33 C	01.08.1989	3601	3617
  34/10-33 CR	27.04.1990	3601	3617
  34/10-34	31.05.1991	2171	2188
  34/10-36	13.07.1992	3511	3524
  34/10-37	22.02.1995	2730	2750
  34/10-39 S	20.06.1995	2712	2727
  34/10-40 S	13.10.1995	5677	5712
  34/10-41 S	28.08.1997	2785	2792
  34/10-42 S	19.09.1999	4355	4369
  34/10-43 S	11.04.2001	3303	3326
  34/10-47 S	02.11.2002	3285	3355
  34/10-48 S	22.12.2004	5456	5500
  34/10-48 S	22.12.2004	5843	5856
  34/10-49 B	21.05.2006	2530	2557
  34/10-49 S	08.05.2006	2530	2557
  34/10-52 A	06.08.2011	3442	3445
  34/10-52 B	22.08.2011	3845	3874
  34/10-53 A	01.06.2011	4753	4760
  34/10-53 S	24.03.2011	3875	3890
  34/10-54 A	18.04.2014	4182	4191
  34/10-54 S	11.02.2014	4068	4076
  34/11-1	25.10.1994	4164	4177
  34/11-2 S	17.05.1996	4241	4261
  34/11-3	16.01.1997	4140	4155
  34/11-4	14.04.1999	4277	4292
  34/11-5 S	03.07.2006	7291	7307
  34/11-6 S	26.01.2017	7033	7057
  34/12-1	30.04.2008	4447	4457
  35/7-1 S	15.08.2011	4409	4454
  35/8-1	24.01.1981	3628	3680
  35/8-2	21.05.1982	3786	3814
  35/8-3	15.10.1988	3880	3896
  35/8-5 S	20.07.2003	3926	3975
  35/9-2	03.04.1991	2640	2646
  35/9-6 S	07.12.2010	3505	3515
  35/9-7	14.04.2012	2953	2974
  35/9-8	11.04.2013	3205	3215
  35/9-9	18.11.2013	3065	3092
  35/9-10 A	16.01.2014	3153	3172
  35/9-10 S	26.11.2013	3570	3580
  35/9-11 A	21.05.2014	3492	3523
  35/9-11 S	15.04.2014	3503	3522
  35/9-12 S	26.12.2014	3526	3537
  35/10-1	16.01.1992	3449	3460
  35/10-2	22.08.1996	4245	4280
  35/10-4 S	10.10.2018	3742	3761
  35/10-7 A	27.12.2021	3431	3468
  35/10-7 S	11.12.2021	3343	3374
  35/11-1	06.08.1984	2534	2557
  35/11-2	04.12.1987	3475	3487
  35/11-3 S	09.09.1989	3528	3538
  35/11-4	29.12.1990	2656	2686
  35/11-4 R	27.01.1992	2666	2696
  35/11-5	03.11.1991	3293	3312
  35/11-6	20.04.1992	3605	3635
  35/11-7	29.09.1992	2454	2511
  35/11-8 S	11.05.1996	3459	3480
  35/11-10	23.06.1997	2718	2728
  35/11-10 A	14.07.1997	3143	3190
  35/11-11	22.05.1998	3077	3085
  35/11-17	01.05.2014	2712	2744
  35/11-18	27.09.2015	3600	3617
  35/11-18 A	16.12.2015	3657	3665
  35/11-20 B	15.09.2016	4706	4725
  35/11-21 A	17.10.2018	2792	2809
  35/11-21 S	05.09.2018	2665	2686
  35/11-22 S	02.02.2019	3335	3353
  35/11-23	06.11.2019	2759	2816
  35/11-25 A	04.06.2021	3614	3692
  35/12-2	15.07.2009	2510	2541
  35/12-3 S	16.02.2011	2748	2807
  35/12-4 A	17.07.2011	3351	3373
  35/12-4 S	26.06.2011	3177	3205
  35/12-5 S	19.06.2015	3519	3535
  35/12-7	25.07.2018	2663	2683
  36/1-4 S	30.01.2022	3150	3182
  36/7-1	07.05.1996	2700	2727

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  29/9-1	24.02.1984	12
  30/2-1	12.10.1982	57
  30/3-2 R	16.02.1981	3
  30/3-4	12.06.1985	73
  30/3-5 S	19.06.1992	15
  30/3-6 S	06.03.1994	28
  30/3-11 S	09.09.2022	7
  30/6-1	22.09.1979	11
  30/6-2	11.12.1979	26
  30/6-4	11.05.1981	35
  30/6-5	15.08.1981	78
  30/6-6	24.03.1982	21
  30/6-7	24.08.1982	10
  30/6-8	06.08.1982	13
  30/6-9	16.12.1982	66
  30/6-10	02.12.1982	32
  30/6-10 A	03.03.1983	19
  30/6-11	30.03.1983	45
  30/6-13	14.05.1983	31
  30/6-14	08.02.1984	2
  30/6-16	21.01.1985	12
  30/6-19	21.06.1986	10
  30/6-22	13.07.1988	22
  30/6-23	01.07.1990	8
  30/6-30	18.11.2018	14
  30/9-1	29.01.1983	46
  30/9-2	12.07.1983	63
  30/9-3	26.02.1984	35
  30/9-3 A	20.05.1984	19
  30/9-9	06.11.1989	15
  31/1-2 S	12.01.2021	0
  33/9-3	14.11.1974	24
  33/9-12	03.08.1987	13
  33/9-14	09.04.1988	44
  33/9-19 S	23.07.1996	18
  34/7-5	16.03.1985	32
  34/7-12	17.12.1987	17
  34/7-13	13.04.1988	27
  34/7-14	02.12.1989	38
  34/7-16	13.08.1990	42
  34/7-17	07.04.1991	26
  34/7-18	17.09.1991	9
  34/7-19	27.12.1991	53
  34/8-1	08.03.1986	46
  34/8-3	14.09.1988	30
  34/8-3 A	31.10.1988	29
  34/8-5	01.04.1991	14
  34/8-8	24.08.1992	40
  34/8-10 S	09.12.1993	9
  34/8-11	08.02.1994	31
  34/8-13 S	26.06.2009	7
  34/10-1	08.09.1978	35
  34/10-3	07.06.1979	21
  34/10-8	25.05.1980	1
  34/10-9	09.05.1980	14
  34/10-14	19.03.1982	26
  34/10-16	11.04.1983	13
  34/10-17	08.07.1983	3
  34/10-23	13.10.1985	44
  34/10-33	15.12.1988	9
  34/10-34	31.05.1991	17
  34/10-54 S	11.02.2014	8
  34/11-1	25.10.1994	9
  34/11-2 S	17.05.1996	20
  34/11-3	16.01.1997	13
  35/8-1	24.01.1981	52
  35/9-2	03.04.1991	7
  35/9-11 A	21.05.2014	26
  35/10-1	16.01.1992	11
  35/10-7 S	11.12.2021	31
  35/11-1	06.08.1984	4
  35/11-2	04.12.1987	12
  35/11-5	03.11.1991	14
  35/11-6	20.04.1992	30
  35/11-7	29.09.1992	56
  35/11-10	23.06.1997	10
  35/11-11	22.05.1998	0
  35/11-17	01.05.2014	26
  35/11-21 A	17.10.2018	18
  35/11-21 S	05.09.2018	21
  35/11-25 A	04.06.2021	72