GARN FM

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General information

General information
Attribute	Value
Lithostrat. unit The lithostratigraphic unit's official name.	GARN FM
NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	48
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.	FANGST GP

Level below

Level below

Lithostrat. unit
Description
Garn Formation

Name

From the Norwegian word for a net. The unit corresponds to the upper part of the Tomma Formation (H1-4) of informal usage, or “Tomma I”.

Well type section

Well 6407/1-3 (Statoil), coordinates 64°52'25.48"N, 07°02'53.47"E, from 3704 m to 3600 m (Fig 4.20) . The lower 84 m of the unit are cored, including the base.

Well reference section

Well 6507/11-3 (Saga Petroleum), coordinates 65°01'59.8"N, 07°30'42.34"E, from 2457 m to 2412 m (Fig 4.16) . The lower 29 m of the unit are cored, including the base.

Thickness

104 m in the type well and 45 m in the reference well.

Lithology

The Garn Formation consists of medium to coarse-grained, moderately to well-sorted sandstones. Mica-rich zones are present. The sandstone is occasionally carbonate-cemented.

Basal Stratotype

The lower boundary is defined by a drop in gamma ray response. In the type well this coincides with an erosional contact at the base of a thin conglomerate.

Age

Bajocian to Bathonian.

Depositional environment

The Garn Formation may represent progradations of braided delta lobes. Delta top and delta front facies with active fluvial and wave-influenced processes are recognized.

Lateral extent and variation

The Garn Formation is encountered across most of Haltenbanken. It may be over 100 m thick on the Halten Terrace, but in structurally high positions the entire unit may be eroded. In the Trænabanken area shaly sediments are lateral equivalents of the Garn Formation sandstones.

Correlation

The Garn Formation is time equivalent to parts of the Brent Group in the North Sea, to the lower part of the Vardekløft Formation in East Greenland and to the upper part of the Stø Formation in the Hammerfest Basin.

Subdivision

The formation is not subdivided at present although two different units may be identified in the western part of Haltenbanken.

Source

Dalland, A., Worsley, D. and Ofstad, K. (eds.) 1988: A lithostratigraphic scheme for the Mesozoic and Cenozoic succession offshore mid- and northern Norway. NPD-Bulletin No. 4, 65 pp.

Wellbores penetrating

Wellbores penetrating
Wellbore name	Wellbore completion date	Top depth [m]	Bottom depth [m]
6305/12-1	18.09.1991	3685	4063
6306/10-1	17.12.1990	2781	2980
6406/2-1	09.04.1995	4417	4556
6406/2-1 R	07.01.1996	4415	4554
6406/2-2	27.03.1996	4461	4576
6406/2-2 R	03.03.2006	4455	4570
6406/2-3	15.04.1997	4629	4716
6406/2-4 SR	15.02.1999	4612	4667
6406/2-5	29.09.1997	4792	4912
6406/2-5 A	23.02.1998	5305	5440
6406/2-6	07.11.1998	4480	4573
6406/2-6 A	06.07.2000	4826	4918
6406/2-6 R	23.05.2000	4481	4574
6406/2-7	26.12.1999	4558	4574
6406/2-9 S	15.01.2019	4511	4601
6406/3-1	14.08.1984	3782	3901
6406/3-2	22.11.1986	3930	4017
6406/3-3	26.10.1986	3939	4038
6406/3-4	29.12.1987	4025	4121
6406/3-5	01.06.1988	3817	3907
6406/3-6	15.11.2002	3650	3767
6406/3-7	19.09.2006	3985	4058
6406/3-8	10.08.2010	3841	3940
6406/3-10	05.04.2020	4065	4140
6406/3-10 A	31.08.2021	4399	4472
6406/5-1	30.04.2002	4205	4272
6406/5-2 S	01.05.2023	4218	4278
6406/6-1	30.12.1985	4204	4275
6406/6-2	31.01.2007	4164	4233
6406/6-3	09.07.2013	3802	3855
6406/6-4 S	30.10.2015	4006	4109
6406/6-6 A	05.01.2019	4510	4632
6406/6-6 S	16.11.2018	4501	4609
6406/8-1	11.04.1988	4266	4313
6406/9-1	02.06.2005	4415	4472
6406/9-2	01.07.2007	4637	4695
6406/9-3	29.09.2013	4491	4591
6407/1-2	15.05.1983	3659	3771
6407/1-3	16.01.1984	3600	3704
6407/1-4	23.08.1996	3675	3776
6407/1-5 S	21.05.2012	3811	3902
6407/1-6 S	24.01.2013	3914	4032
6407/1-8 S	28.10.2020	3437	3520
6407/2-1	06.08.1982	2939	2984
6407/2-2	31.07.1983	2461	2515
6407/2-3	23.01.1987	2427	2480
6407/2-4	31.08.2009	2892	2943
6407/2-5 S	02.09.2009	2750	2783
6407/3-1 S	08.05.2011	2622	2667
6407/3-2 S	05.09.2019	2000	2062
6407/4-1	15.11.1985	3890	3969
6407/4-2	13.04.2011	4008	4093
6407/5-1	04.03.1988	4205	4306
6407/5-2 S	04.09.2011	3141	3250
6407/6-1	26.10.1984	1856	1986
6407/6-3	16.02.1987	2461	2492
6407/6-4	13.12.1990	2653	2752
6407/6-5	27.12.1999	2381	2444
6407/6-6	05.02.2008	2110	2163
6407/6-7 S	27.05.2009	2777	2811
6407/7-1 S	07.04.1986	2759	2773
6407/7-2	21.01.1987	2668	2681
6407/7-2 R	30.04.1990	2670	2683
6407/7-8	14.09.2008	4330	4418
6407/7-8 A	05.11.2008	4372	4482
6407/8-4 S	21.05.2008	2212	2307
6407/8-5 A	13.06.2009	2253	2317
6407/8-5 S	26.05.2009	2253	2317
6407/8-6 A	09.12.2013	2884	2912
6407/8-8 S	10.12.2022	2998	3129
6407/9-1	07.09.1984	1673	1746
6407/9-2	02.02.1985	1702	1765
6407/9-3	28.07.1985	1685	1771
6407/9-4	10.09.1985	1660	1702
6407/9-5	13.11.1985	1733	1793
6407/9-6	13.03.1986	1660	1744
6407/9-6 R	30.05.1993	1660	1744
6407/9-7	25.05.1988	1714	1834
6407/9-8	22.09.1992	1730	1833
6407/9-10	23.06.2003	1665	1766
6407/9-12	08.11.2019	1725	1775
6407/9-13	14.02.2022	2136	2235
6407/12-1	15.07.1999	1763	1805
6407/12-3	02.06.2010	1828	1890
6408/4-1	18.10.1988	1825	1945
6506/6-1	07.12.2000	4961	5015
6506/9-1	15.09.2009	5212	5277
6506/9-2 S	28.04.2010	4332	4392
6506/9-3	27.08.2013	4237	4273
6506/9-4 A	13.07.2018	4290	4347
6506/9-4 S	27.04.2018	4520	4588
6506/11-1	31.03.1988	4136	4214
6506/11-2	26.10.1991	4229	4308
6506/11-3	02.10.1992	4169	4330
6506/11-4 S	06.06.1996	4512	4611
6506/11-5 S	10.11.1996	4213	4292
6506/11-6	22.08.1998	4651	4769
6506/11-7	27.07.2001	4578	4637
6506/11-8	16.07.2006	4623	4702
6506/11-9 S	03.09.2012	4716	4778
6506/11-10	17.04.2018	4225	4439
6506/11-11 S	28.10.2019	4141	4209
6506/12-1	06.02.1985	3974	4013
6506/12-3	17.07.1985	3822	3908
6506/12-4	13.08.1985	3980	4021
6506/12-5	27.03.1986	3948	4040
6506/12-6	02.08.1986	4234	4279
6506/12-7	12.08.1987	4396	4439
6506/12-8	30.08.1988	3875	3956
6506/12-9 S	10.09.1993	4379	4436
6506/12-10	26.06.1995	4545	4605
6506/12-10 A	11.12.1995	5246	5305
6506/12-11 S	07.09.1996	4731	4804
6506/12-11 SR	01.02.1997	4731	4804
6506/12-12 A	01.09.2009	4769	4828
6506/12-12 S	06.08.2009	4769	4828
6507/2-1	29.09.1986	3858	3881
6507/2-2	16.03.1992	3673	3698
6507/2-5 S	14.09.2019	4099	4107
6507/2-6	14.07.2022	4611	4664
6507/3-1	26.10.1990	3608	3635
6507/3-3	25.03.1999	3364	3404
6507/3-3 A	06.05.1999	3789	3911
6507/3-3 B	16.06.1999	3792	3921
6507/3-4	30.04.2004	3725	3738
6507/3-5 S	08.05.2008	3960	3972
6507/3-6	23.06.2009	1291	1297
6507/3-7	22.07.2009	3545	3580
6507/3-10	16.08.2013	3272	3278
6507/3-11 S	15.08.2015	2167	2198
6507/3-12	28.02.2017	3295	3303
6507/4-2 S	19.05.2021	4262	4350
6507/5-1	03.05.1998	3380	3434
6507/5-2	23.09.1999	3614	3669
6507/5-4	15.04.2001	3513	3581
6507/5-4 A	03.06.2001	3720	3793
6507/5-5	14.02.2002	3648	3723
6507/5-7	24.06.2014	1322	1335
6507/5-9 A	15.10.2019	2108	2148
6507/5-9 S	27.09.2019	2033	2061
6507/6-2	16.07.1991	3727	3781
6507/7-3	18.09.1985	2368	2400
6507/7-4	13.01.1986	2449	2500
6507/7-5	06.03.1986	2353	2399
6507/7-8	02.08.1987	2436	2468
6507/7-10	29.10.1993	2507	2532
6507/7-11 S	14.08.1997	3458	3476
6507/7-14 S	26.09.2010	4219	4306
6507/7-15 S	02.05.2012	4267	4350
6507/7-16 S	18.12.2019	2967	2993
6507/8-1	09.12.1986	2248	2294
6507/8-3	20.09.1988	1358	1379
6507/8-5	16.03.1991	1827	1854
6507/8-6	09.10.1993	2096	2120
6507/8-7	31.01.2004	2820	2848
6507/10-2 S	10.02.2014	2655	2682
6507/11-3	15.08.1985	2412	2457
6507/11-4	22.06.1987	2677	2732
6507/11-5 S	28.10.1997	2484	2539
6507/11-6	08.07.2001	3030	3077
6507/11-8	03.07.2007	2416	2447
6507/11-9	18.04.2008	2597	2637
6507/11-10	16.02.2010	2086	2113
6507/11-11	01.07.2015	2845	2880
6507/12-1	26.10.1980	2094	2128
6507/12-2	24.11.1981	1922	2007
6507/12-3	13.09.1985	1972	2015
6508/1-1 S	29.08.1999	2351	2378
6510/2-1	10.10.1997	1543	1654
6510/2-1 R	21.12.1997	1543	1654
6607/12-2 S	25.10.2011	3610	3633
6607/12-4	13.10.2020	3698	3714
6608/10-1	29.05.1989	3061	3127
6608/10-2	29.01.1992	2578	2611
6608/10-3	11.03.1993	2574	2610
6608/10-3 R	17.08.1995	2574	2610
6608/10-4	06.03.1994	2567	2598
6608/10-16	13.06.2014	3653	3721

Wellbores with cores

Wellbores with cores
Wellbore name	Wellbore completion date	Core length [m]
6305/12-1	18.09.1991	7
6306/10-1	17.12.1990	8
6406/2-1	09.04.1995	8
6406/2-2	27.03.1996	16
6406/2-3	15.04.1997	79
6406/2-4 SR	15.02.1999	12
6406/2-5	29.09.1997	115
6406/2-5 A	23.02.1998	121
6406/2-6	07.11.1998	27
6406/2-7	26.12.1999	1
6406/3-1	14.08.1984	63
6406/3-2	22.11.1986	83
6406/3-3	26.10.1986	30
6406/3-4	29.12.1987	96
6406/3-5	01.06.1988	19
6406/3-8	10.08.2010	83
6406/3-10 A	31.08.2021	71
6406/5-1	30.04.2002	24
6406/5-2 S	01.05.2023	36
6406/6-1	30.12.1985	28
6407/1-2	15.05.1983	57
6407/1-3	16.01.1984	84
6407/1-4	23.08.1996	60
6407/1-5 S	21.05.2012	48
6407/2-1	06.08.1982	15
6407/2-2	31.07.1983	44
6407/2-3	23.01.1987	52
6407/2-5 S	02.09.2009	28
6407/4-1	15.11.1985	78
6407/4-2	13.04.2011	54
6407/5-1	04.03.1988	15
6407/6-1	26.10.1984	17
6407/6-3	16.02.1987	12
6407/6-4	13.12.1990	28
6407/6-6	05.02.2008	26
6407/6-7 S	27.05.2009	1
6407/7-1 S	07.04.1986	12
6407/7-2	21.01.1987	8
6407/8-4 S	21.05.2008	27
6407/8-6 A	09.12.2013	9
6407/8-8 S	10.12.2022	100
6407/9-1	07.09.1984	10
6407/9-2	02.02.1985	4
6407/9-4	10.09.1985	30
6407/9-6	13.03.1986	28
6407/9-8	22.09.1992	29
6506/6-1	07.12.2000	3
6506/9-2 S	28.04.2010	27
6506/9-3	27.08.2013	32
6506/9-4 A	13.07.2018	46
6506/9-4 S	27.04.2018	67
6506/11-1	31.03.1988	56
6506/11-2	26.10.1991	35
6506/11-3	02.10.1992	51
6506/11-6	22.08.1998	117
6506/11-7	27.07.2001	18
6506/11-8	16.07.2006	76
6506/11-9 S	03.09.2012	46
6506/11-10	17.04.2018	28
6506/11-11 S	28.10.2019	41
6506/12-1	06.02.1985	38
6506/12-3	17.07.1985	71
6506/12-4	13.08.1985	29
6506/12-5	27.03.1986	82
6506/12-6	02.08.1986	32
6506/12-7	12.08.1987	11
6506/12-8	30.08.1988	77
6506/12-9 S	10.09.1993	19
6506/12-10	26.06.1995	41
6507/2-2	16.03.1992	12
6507/2-5 S	14.09.2019	0
6507/2-6	14.07.2022	22
6507/3-1	26.10.1990	23
6507/3-3	25.03.1999	27
6507/3-4	30.04.2004	10
6507/3-5 S	08.05.2008	12
6507/3-7	22.07.2009	34
6507/3-10	16.08.2013	4
6507/3-12	28.02.2017	4
6507/4-2 S	19.05.2021	64
6507/5-1	03.05.1998	39
6507/5-2	23.09.1999	43
6507/5-4	15.04.2001	67
6507/5-5	14.02.2002	68
6507/5-9 S	27.09.2019	19
6507/6-2	16.07.1991	12
6507/7-3	18.09.1985	29
6507/7-4	13.01.1986	49
6507/7-5	06.03.1986	33
6507/7-8	02.08.1987	30
6507/7-10	29.10.1993	7
6507/7-11 S	14.08.1997	15
6507/7-14 S	26.09.2010	55
6507/7-15 S	02.05.2012	56
6507/7-16 S	18.12.2019	14
6507/8-1	09.12.1986	14
6507/8-3	20.09.1988	0
6507/10-2 S	10.02.2014	22
6507/11-3	15.08.1985	29
6507/11-4	22.06.1987	28
6507/11-5 S	28.10.1997	51
6507/11-6	08.07.2001	28
6507/11-8	03.07.2007	19
6507/11-9	18.04.2008	16
6507/12-3	13.09.1985	8
6607/12-2 S	25.10.2011	20
6608/10-1	29.05.1989	27
6608/10-2	29.01.1992	21
6608/10-3	11.03.1993	31
6608/10-4	06.03.1994	30

GARN FM

General information

Level below

Description

Wellbores penetrating

Wellbores with cores