EKOFISK FM

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General information

General information
Attribute	Value
Lithostrat. unit The lithostratigraphic unit's official name.	EKOFISK FM
NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	33
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.	SHETLAND GP

Level below

Level below

Lithostrat. unit
Description
Ekofisk Formation

Name

Named after the Ekofisk Field in Norwegian block 2/4 (Deegan & Scull 1977).

Well type section

Norwegian well 2/4-5 from 3164 m to 3037 m, coordinates N 56°34'29.77", E 03°12'13.03" (Fig 5.30) . No cores.

Well reference sections

Norwegian well 1/3-1 from 3354 m to 3258 m, coordinates N 56°51'21.00", E 02°51'05.00" (Fig 5.24) . No cores. UK well 22/1-2A from 2982.5 m to 2935 m, coordinates N 57°56'12.20", E 01°02'55.80" (Fig 5.25) . No cores. Norwegian well 2/5-1 from 3132 m to 3041 m, coordinates N 56°38'19.95", E 03°21'07.94" (Fig 5.31) . Cored through the upper 78 m.

Thickness

The formation is 127 m thick in the type-well, 96 m in 1/3-1 , 47.5 m in 22/1-2 A and 91 m in 2/5-1 . In the Norwegian sector, seismic interpretation indicates that a thickness of more than 150 m is found in the northwestern part of the Central Trough.

Lithology

In the type well, the formation comprises white, tan or beige, hard, dense, sometimes finely crystalline limestones, although softer chalky textures are also present. The formation usually consists of white to light grey, beige to brownish, mudstones or wackestones with occasional packstones/grainstones and pisolitic horizons, often alternating with argillaceous chalks, chalky limestones or limestones. Thin beds of grey, calcareous, often pyritic shales or clays are most common in the lower part while brownish-grey cherts occur rarely to abundantly throughout the formation.

Basal stratotype

The lower boundary is marked by a change in gamma-ray readings from a constant low level in the Tor Formation to a slightly lower level. The velocity may or may not show a corresponding increase. The lower boundary separates the Cretaceous and Tertiary chalks and may represent an unconformity (e.g. Norwegian well 1/9-1 , (Fig 5.29) .

Characteristics of the upper boundary

The upper boundary is defined where the gamma-ray response increases and the velocity decreases towards the marly beds of the Våle Formation . Where the marl is not present the change is more abrupt (e.g. Norwegian well 2/8-8 , (Fig 5.28) .

Distribution

The formation is widespread in the southern and central North Sea. In the Norwegian sector, it is missing from parts of the Sørvestlandet High and the Lindesnes Ridge.

Age

Danian.

Depositional environment

Open marine with deposition of calcareous debris flows, turbidites and autochthonous periodites (Skovbro 1983, d'Heur 1986, Hatton 1986).

Remarks

Two zones of the formation are readily correlatable within the Central Trough area (Hatton 1986, (Fig 5.24 , 5.29 , 5.30 , 5.31)

LOWER MEMBER OF THE EKOFISK FORMATION

The lowermost part consists of a low porosity to tight zone with a higher terrigenous clay content, and is informally termed the Ekofisk tight zone. The larger part consists of the informal Ekofisk reworked zone with mainly reworked Maastrichtian chalks ( Tor Formation ) deposited as various mass flows and periodite-facies chalks. This lower member is present in Norwegian wells 1/3-1 from 3354 m to 3307 m, 1/9-1 from 3104 m to 3072 m, 2/4-5 from 3164 m to 3106 m and 2/5-1 from 3132 m to 3099 m.

UPPER MEMBER OF THE EKOFISK FORMATION

This zone is composed of mainly homogenous chalks with a low clay content, debris flows of reworked Danian chalks and minor turbiditesc A lower tight to low porosity zone, informally termed the Tommeliten tight zone, is present in parts of the Central Trough. The zone is found in Norwegian wells 1/3-1 from 3311 m to 3258 m, 1/9-1 from 3072 m to 3036 m, 2/4-5 from 3102 m to 3037 m and 2/5-1 from 3094 m to 3041 m.

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]
1/2-1	04.06.1989	3407	3514
1/2-2	02.02.2006	3418	3434
1/3-1	11.11.1968	3258	3354
1/3-2	27.07.1969	3207	3270
1/3-3	24.03.1983	3201	3288
1/3-4	08.05.1983	2754	2797
1/3-5	11.02.1985	3288	3384
1/3-6	22.06.1991	3103	3201
1/3-8	27.05.1997	3377	3478
1/3-9 S	31.07.1998	3319	3409
1/3-11	30.08.2008	3502	3595
1/3-12 S	22.07.2010	3473	3581
1/3-13	07.07.2021	3147	3238
1/5-2	15.04.1974	3069	3152
1/5-4 S	22.05.2002	2994	3013
1/5-5	16.09.2016	3483	3594
1/6-1	26.11.1972	3144	3247
1/6-2	12.01.1973	3024	3090
1/6-3	11.09.1974	3110	3229
1/6-4	09.04.1976	3374	3475
1/6-5	02.09.1990	1721	1725
1/6-6	08.03.1993	3306	3413
1/6-7	12.07.1992	3278	3389
1/9-1	17.02.1977	3036	3104
1/9-1 R	17.05.1987	3033	3101
1/9-2	12.08.1977	3120	3195
1/9-3 R	30.09.1978	3081	3157
1/9-4	12.01.1978	3114	3212
1/9-4 R	26.04.1991	3114	3212
1/9-5	16.12.1978	3207	3282
1/9-6 S	01.12.1982	3411	3516
1/9-7	02.08.2003	3093	3159
2/1-1	14.11.1972	3128	3246
2/1-3	29.03.1980	2987	3000
2/1-4	03.08.1982	3174	3190
2/1-5	05.04.1983	3136	3237
2/1-6	12.08.1984	3215	3312
2/1-7	06.03.1985	3187	3275
2/1-8	23.11.1985	3148	3230
2/1-9	06.07.1991	3168	3256
2/1-9 A	08.03.1992	3168	3256
2/1-10	14.01.1992	3221	3323
2/1-11	07.05.1997	3310	3421
2/1-12	10.02.1999	2929	2990
2/1-13 S	07.03.2009	3308	3422
2/1-14 S	28.02.2009	4955	5180
2/1-15	05.09.2013	2941	3019
2/1-16 S	13.07.2013	2997	3075
2/1-17 S	08.11.2019	3199	3296
2/2-3	11.05.1983	2965	3090
2/2-4	07.06.1988	2826	2847
2/2-5	19.02.1992	2947	3009
2/2-6	14.05.2010	3016	3094
2/3-3	20.11.1971	2443	2484
2/3-4	24.07.1984	2719	2796
2/4-2	24.12.1969	3050	3203
2/4-3	31.05.1970	3090	3253
2/4-4	01.08.1970	3116	3259
2/4-5	27.08.1970	3037	3164
2/4-6	10.12.1970	3110	3270
2/4-7	08.10.1971	3175	3304
2/4-8	29.03.1972	2985	3086
2/4-9	09.10.1973	3215	3306
2/4-10	20.12.1973	3162	3293
2/4-11	09.04.1974	3146	3268
2/4-12	08.09.1975	3195	3302
2/4-14	31.01.1989	3318	3443
2/4-14 R	06.04.1990	3330	3455
2/4-14 R2	14.04.1990	3318	3443
2/4-15 S	16.03.1990	3558	3692
2/4-15 SR	27.10.2003	3558	3692
2/4-16	04.11.1991	3317	3435
2/4-16 R	15.07.1992	3317	3435
2/4-17	29.02.1992	3192	3334
2/4-18 R	10.07.1994	3351	3475
2/4-20	14.03.2008	3268	3402
2/4-21	24.05.2012	3382	3505
2/4-21 A	24.07.2012	3382	3505
2/4-22 S	22.02.2015	3286	3405
2/4-23 S	05.09.2015	3484	3604
2/5-1	22.11.1970	3041	3132
2/5-2	20.04.1971	3118	3360
2/5-3	15.06.1972	3037	3121
2/5-4	31.10.1972	3039	3131
2/5-5	09.02.1973	3176	3274
2/5-6	16.08.1978	3048	3151
2/5-7	24.02.1984	3204	3289
2/5-8	05.11.1988	3107	3204
2/5-9	18.01.1992	3259	3378
2/5-10	26.08.1993	3214	3342
2/5-10 A	25.09.1993	3214	3342
2/5-11	14.11.1997	3203	3362
2/5-12	22.02.2002	3095	3216
2/5-13	21.01.2009	3222	3337
2/5-14 S	12.04.2009	3551	3681
2/6-1	30.05.1969	2644	2719
2/6-2	25.05.1980	3185	3248
2/6-3	25.02.1983	2940	3020
2/6-4 S	02.06.1990	2858	2923
2/6-5	11.01.1997	2817	2898
2/6-6 S	18.01.2019	2949	3042
2/7-1	11.12.1970	2934	3014
2/7-2	02.03.1971	2966	3005
2/7-4	03.09.1972	3096	3186
2/7-5	01.01.1973	3110	3205
2/7-7	29.03.1973	2792	2822
2/7-8	12.08.1973	2969	2978
2/7-9	10.04.1974	3086	3163
2/7-10	05.12.1973	3191	3281
2/7-13	21.04.1979	2697	2818
2/7-14	20.01.1980	3146	3257
2/7-14 R	19.06.1989	3143	3254
2/7-15	02.06.1980	3008	3029
2/7-16	12.07.1980	3182	3264
2/7-19	02.02.1981	3130	3188
2/7-19 R	14.03.1990	3127	3185
2/7-20	25.06.1988	3066	3146
2/7-20 R	01.11.1991	3063	3143
2/7-21 S	09.01.1990	3231	3318
2/7-21 SR	14.10.1991	3238	3325
2/7-22	15.10.1990	3092	3140
2/7-23 S	21.11.1990	3231	3315
2/7-25 S	31.03.1991	3462	3561
2/7-26 S	13.09.1991	3118	3200
2/7-27 S	17.06.1992	3167	3255
2/7-28	07.08.1992	2850	2898
2/7-29	06.01.1994	3138	3190
2/7-30	10.04.1995	3150	3242
2/7-31	09.06.1999	3146	3203
2/8-2	30.07.1970	2950	3044
2/8-5	23.05.1974	2796	2884
2/8-7	24.08.1975	2596	2627
2/8-12 S	27.04.1989	3046	3118
2/8-13	22.06.1989	1766	1773
2/8-15	09.01.1996	3177	3346
2/8-17 A	21.02.1998	2943	3019
2/8-17 S	17.01.1998	2581	2602
2/8-18 S	13.07.2012	2742	2771
2/9-1	07.12.1972	3092	3200
2/9-2	04.09.1979	3039	3126
2/9-3	14.12.1989	3168	3253
2/9-4	04.07.2008	3218	3336
2/9-5 S	18.09.2014	2944	3021
2/9-6 S	15.02.2021	3150	3237
2/10-1 S	23.04.1976	3360	3406
2/10-2	25.04.1993	3014	3084
2/11-5	05.07.1979	2822	2835
2/11-7	06.09.1986	3075	3132
2/11-8	11.07.1991	3075	3142
2/11-9	23.12.1993	3050	3091
2/11-10 S	14.06.1994	3901	3917
2/11-11	27.07.2015	2931	2954
2/11-12 A	07.03.2019	2988	3001
2/11-12 S	12.02.2019	2837	2842
2/12-1	12.03.1987	3107	3125
2/12-2 S	14.09.1990	3429	3446
3/4-1	26.02.1994	2415	2454
3/4-2 S	31.08.2012	2638	2700
3/5-1	28.06.1978	2202	2223
3/5-2	20.08.1978	2627	2782
3/6-1	10.07.2000	2092	2167
3/7-1	13.09.1973	2769	2852
3/7-2	20.06.1981	2558	2596
3/7-3	31.08.1981	2812	2907
3/7-4	23.01.1990	2848	2922
3/7-5	07.02.1992	2711	2800
3/7-6	30.11.1996	2921	3036
3/7-7	27.10.2008	2941	3054
3/7-8 S	03.03.2013	3353	3494
3/7-9 S	28.04.2013	2969	3066
3/7-10 S	14.09.2015	2867	2959
3/7-11 S	27.05.2019	2845	2971
3/8-1	29.12.2010	2762	2824
4/4-1	13.10.2013	1918	1953
6/3-1	01.02.1985	2673	2679
7/1-2 S	08.05.2008	2462	2480
7/3-1	10.06.1969	1882	1890
7/4-2	13.03.2008	2757	2886
7/4-3	03.06.2013	2334	2352
7/7-1	20.02.1990	2830	2925
7/7-2	25.04.1992	2723	2854
7/7-3	04.07.1993	2821	2949
7/7-4	20.10.2007	3008	3054
7/8-1	05.02.1969	2669	2730
7/8-2	29.08.1973	2366	2440
7/8-3	12.12.1983	2858	3024
7/8-4	20.02.1985	3125	3187
7/8-5 S	03.06.2006	2985	3164
7/8-6 S	05.01.2013	3027	3095
7/9-1	29.05.1971	2207	2254
7/11-2	14.10.1968	3220	3346
7/11-3	07.02.1969	3333	3350
7/11-4	31.07.1969	3183	3311
7/11-5	10.06.1982	3231	3310
7/11-7	25.12.1983	3390	3468
7/11-7 R	08.10.1984	3390	3468
7/11-8	12.12.1983	3039	3168
7/11-9	09.03.1986	3162	3229
7/11-10 S	10.09.1990	3440	3528
7/11-11 S	10.06.2007	3408	3504
7/11-12 A	31.12.2011	3469	3567
7/11-12 S	16.07.2011	3469	3567
7/11-13	03.11.2012	3077	3136
7/11-14 S	31.10.2021	3246	3311
7/12-1 S	18.10.1968	2707	2831
7/12-2	23.09.1976	2730	2795
7/12-3	03.06.1977	2791	2933
7/12-3 A	06.09.1977	2826	2947
7/12-4	12.12.1977	2737	2899
7/12-5	07.06.1981	2912	3058
7/12-6	24.07.1981	2730	2810
7/12-7	26.07.1988	2858	3009
7/12-8	23.12.1988	2940	3075
7/12-8	23.12.1988	3075	3321
7/12-9	14.05.1990	2961	3072
7/12-10	29.08.1991	2935	3000
7/12-11	06.11.1991	2973	3124
7/12-12 S	17.03.1996	4126	4561
7/12-13 S	18.05.2012	3286	3374
8/1-1	07.02.1972	1535	1556
8/3-1	10.10.1966	1040	1090
8/3-2	04.12.1982	1115	1152
8/4-1	25.07.1977	1605	1664
8/5-1	28.03.2013	1615	1675
8/9-1	10.02.1976	1492	1535
8/10-1	01.07.1969	2397	2441
8/10-2	17.03.1980	2365	2385
8/10-3	06.10.2010	2556	2621
8/10-4 A	18.12.2011	2502	2556
8/10-4 S	27.10.2011	2493	2541
8/10-5 A	24.05.2014	1860	1907
8/10-5 S	04.03.2014	1952	2009
8/10-6 S	16.07.2014	1566	1599
8/10-7 S	04.01.2019	2518	2593
8/11-1	29.06.1975	2116	2143
8/12-1	23.07.1971	1894	1927
9/1-1 S	21.11.2011	900	936
9/2-1	28.04.1987	765	829
9/2-2	21.09.1987	803	873
9/2-3	08.02.1990	1031	1139
9/2-4 S	11.04.1994	784	855
9/2-5	21.07.1995	1035	1134
9/2-6 S	15.10.1996	808	878
9/2-7 S	10.06.1997	1057	1117
9/2-8 S	02.02.1998	850	886
9/2-9 S	17.09.1999	1050	1160
9/2-11	29.03.2010	671	745
9/2-12	14.10.2019	677	729
9/3-1	04.09.1986	548	580
9/3-2	09.12.2005	624	665
9/4-1	19.05.1968	1336	1365
9/4-2	29.08.1970	1323	1365
9/4-3	19.08.1972	1305	1328
9/4-4	20.08.1977	1260	1302
9/4-5	01.08.2006	1261	1397
9/8-1	29.06.1968	1275	1300
9/10-1	18.09.1970	2112	2116
9/12-1	06.05.1969	1167	1222
10/4-1	12.07.2015	590	648
10/5-1	26.06.1976	335	428
10/8-1	17.01.1971	656	748
11/10-1	19.08.1969	1048	1110
15/2-1	24.02.1982	2655	2731
15/3-1 S	06.07.1975	2715	2800
15/3-3	09.08.1979	2692	2764
15/3-8	11.04.2006	2740	2792
15/3-9	13.08.2010	2714	2792
15/3-11	09.08.2018	2776	2805
15/3-12 A	03.03.2020	2730	2769
15/3-12 A	03.03.2020	2769	2813
15/5-1	08.04.1978	2644	2701
15/5-2	16.12.1978	2705	2782
15/5-3	07.12.1980	2595	2668
15/5-5	05.10.1995	2598	2645
15/5-6	16.07.1997	2674	2725
15/5-7	07.09.2008	2719	2790
15/5-7 A	13.10.2008	2719	2790
15/6-4	16.08.1976	2605	2667
15/6-5	29.11.1977	2765	2800
15/6-6	09.06.1982	2740	2778
15/6-7	08.06.1993	2676	2740
15/6-8 S	05.04.1997	2677	2723
15/6-9 A	13.06.2007	2798	2850
15/6-9 B	23.07.2007	2798	2850
15/6-9 S	27.05.2007	2798	2850
15/6-10	06.04.2009	2711	2753
15/6-11 A	13.03.2011	2850	2895
15/6-11 S	19.12.2010	2755	2802
15/6-12	09.02.2011	2751	2782
15/6-13	15.05.2015	2686	2739
15/6-13 A	03.06.2015	2737	2800
15/6-13 B	29.06.2015	2807	2867
15/6-15	02.06.2019	2714	2768
15/6-16 S	28.06.2019	2729	2772
15/8-1	07.01.1982	2830	2841
15/8-2	21.10.2011	2848	2904
15/9-1	30.05.1977	2743	2783
15/9-2	17.06.1978	2762	2798
15/9-3	03.04.1979	2636	2675
15/9-4	14.06.1979	2778	2792
15/9-5	11.04.1980	2774	2806
15/9-6	07.09.1980	2722	2765
15/9-7	29.04.1981	2779	2810
15/9-8	25.05.1981	2788	2800
15/9-9	14.07.1981	2425	2452
15/9-10	07.11.1981	2667	2671
15/9-11	23.12.1981	2530	2557
15/9-14	27.06.1982	2756	2765
15/9-17	30.03.1983	2486	2491
15/9-18	02.03.1984	2702	2706
15/9-19 A	09.11.1997	3313	3328
15/9-19 B	02.02.1998	3375	3403
15/9-19 SR2	25.07.1997	3830	3853
15/9-19 SR	29.04.1993	3827	3850
15/9-21 S	23.05.1998	3437	3513
15/9-22	13.03.2006	2794	2838
15/9-23	03.01.2010	2548	2551
15/9-24	10.06.2010	2323	2329
15/12-1	06.09.1975	2643	2738
15/12-2	27.02.1976	2234	2268
15/12-3	22.12.1980	2472	2479
15/12-4	31.10.1984	2476	2494
15/12-5	04.05.1986	2439	2457
15/12-7 S	07.01.1991	2583	2630
15/12-8	14.07.1991	2464	2496
15/12-8 A	29.07.1991	2464	2496
15/12-11 S	19.05.1997	2840	2856
15/12-12	09.02.2001	2445	2450
15/12-16 S	31.03.2006	2447	2455
15/12-17 A	23.03.2007	2693	2705
15/12-17 S	04.02.2007	2693	2705
15/12-19	20.05.2008	2653	2663
15/12-22	16.05.2010	2320	2324
15/12-23	29.05.2010	2532	2543
15/12-23 A	18.07.2010	2801	2815
15/12-24 S	20.05.2015	2408	2433
15/12-26	13.05.2021	2227	2244
16/1-1	10.12.1967	2734	2763
16/1-4	13.04.1993	1834	1860
16/1-6 A	21.06.2003	2163	2181
16/1-6 S	07.06.2003	1977	1997
16/1-7	28.05.2004	2522	2560
16/1-8	13.11.2007	1897	1913
16/1-8 R	10.10.2009	1897	1913
16/1-9	22.04.2008	2179	2221
16/1-10	05.02.2009	1860	1890
16/1-11	26.04.2010	2208	2233
16/1-11 A	09.05.2010	2262	2283
16/1-12	08.09.2009	1845	1865
16/1-13	21.01.2010	1888	1917
16/1-14	30.11.2010	2162	2168
16/1-15	05.04.2011	1889	1906
16/1-15 A	13.05.2011	2043	2057
16/1-17	20.03.2013	1806	1822
16/1-18	14.05.2014	1840	1868
16/1-19 S	25.10.2013	1845	1878
16/1-20 A	21.10.2013	2382	2427
16/1-23 S	25.08.2015	1901	1916
16/1-25 S	26.12.2015	1917	1934
16/1-27	11.04.2017	1947	1955
16/1-28 S	23.08.2018	2036	2110
16/1-28 S	23.08.2018	2336	2768
16/1-29 S	03.06.2018	1874	1885
16/1-31 A	22.06.2019	2252	2268
16/1-31 S	10.05.2019	1899	1911
16/1-34 S	31.07.2021	2179	2193
16/1-35 S	28.02.2023	2365	2371
16/2-3	28.09.2007	1716	1717
16/2-4	15.12.2007	1708	1710
16/2-5	13.05.2009	1757	1762
16/2-6	20.09.2010	1628	1639
16/2-7	01.09.2011	1500	1502
16/2-7 A	29.09.2011	1551	1568
16/2-8	19.08.2011	1572	1576
16/2-9 S	24.09.2011	1746	1771
16/2-10	28.10.2011	1622	1632
16/2-11	29.03.2012	1581	1592
16/2-11 A	04.05.2012	1752	1809
16/2-12	06.09.2012	1672	1678
16/2-13 A	29.09.2012	2041	2090
16/2-13 S	30.08.2012	1570	1584
16/2-14	17.11.2012	1567	1791
16/2-15	13.01.2013	1534	1539
16/2-16	12.12.2012	1685	1690
16/2-16 A	07.02.2013	2033	2041
16/2-17 B	16.06.2013	1775	1777
16/2-17 S	20.05.2013	1556	1560
16/2-18 S	08.08.2013	1614	1631
16/2-19	03.04.2014	1703	1726
16/2-19 A	03.05.2014	1948	1965
16/2-21	07.06.2013	1542	1553
16/2-22 S	28.01.2017	1808	1818
16/2-U-18	28.11.2016	1689	1699
16/2-U-19	12.12.2016	1659	1669
16/3-2	08.03.1976	1458	1471
16/3-4	28.06.2011	1485	1504
16/3-4 A	18.07.2011	1570	1599
16/3-5	07.03.2013	1493	1499
16/3-6	16.07.2013	1500	1526
16/3-7	08.11.2013	1452	1471
16/3-8 A	01.04.2014	1570	1578
16/3-8 S	16.03.2014	1570	1578
16/3-U-1	24.12.2016	1429	1445
16/3-U-1 A	10.01.2017	1433	1454
16/3-U-1 B	15.01.2017	1433	1454
16/4-2	29.07.1990	2585	2629
16/4-3	24.12.2000	2412	2425
16/4-4	23.03.2007	2350	2404
16/4-5	07.03.2010	1780	1812
16/4-6 S	03.05.2013	1915	1922
16/4-7	21.08.2013	2319	2336
16/4-8 S	26.08.2014	1907	1928
16/4-9 S	16.08.2015	1975	1977
16/4-10	07.03.2016	2322	2330
16/4-11	01.04.2018	1925	1950
16/4-13 S	10.04.2021	2004	2014
16/5-1	08.02.1971	1662	1699
16/5-2 S	28.01.2012	1479	1487
16/5-3	20.03.2013	1504	1512
16/5-4	28.09.2013	1487	1491
16/5-5	29.12.2013	1861	1909
16/5-6	10.07.2016	1762	1773
16/5-7	12.07.2019	1573	1681
16/5-8 S	22.08.2019	1991	2016
16/6-1	19.01.1968	1344	1362
16/7-3	27.07.1982	2258	2265
16/7-4	06.12.1982	2229	2238
16/7-5	03.08.1984	2310	2328
16/7-6	24.07.1997	2197	2221
16/7-7 S	29.12.1997	2340	2372
16/7-8 S	19.01.2003	2474	2484
16/7-9	03.01.2011	2000	2033
16/7-10	13.09.2011	2467	2500
16/7-11	04.09.2015	2344	2366
16/8-1	29.10.1976	1750	1775
16/8-2	13.08.1980	1763	1795
16/8-3 S	01.05.2013	1743	1762
16/9-1	12.07.1968	1393	1425
16/10-1	14.07.1986	2281	2349
16/10-2	01.08.1991	2335	2371
16/10-3	01.12.1996	2029	2076
16/10-4	10.08.1998	1888	1940
16/10-5	27.11.2012	2171	2212
16/11-1 S	31.10.1967	1625	1642
16/11-2	23.07.1973	1656	1697
17/8-1	23.10.2021	1025	1059
17/9-1	23.10.1973	746	789
17/10-1	24.03.1969	1525	1557
17/11-1	30.06.1968	1020	1040
17/11-2	17.05.1976	1323	1354
17/12-1 R	21.06.1972	785	807
17/12-3	03.02.1980	801	817
17/12-4	10.07.2009	780	799
17/12-4 A	15.08.2009	780	799
17/12-4 B	26.08.2009	780	799
18/10-1	01.01.1980	744	808
18/11-1	31.03.1974	498	572
24/9-2	22.07.1977	2608	2667
24/12-1	09.04.1978	2768	2784
24/12-1 R	14.08.1978	2768	2784
25/2-10 S	19.03.1986	2939	2967
25/2-10 SR	22.09.1987	2943	2971
25/2-18 A	19.10.2016	2806	2854
25/2-18 B	30.10.2016	2823	2894
25/2-18 C	17.11.2016	2755	2781
25/2-18 S	11.09.2016	2616	2653
25/2-19 A	08.10.2017	2730	2791
25/6-3	11.11.1999	2419	2443
25/7-1 S	19.07.1986	2572	2615
25/7-2	18.07.1990	2698	2749
25/7-4 S	21.06.1997	2512	2550
25/7-7	09.11.2019	2702	2758
25/7-8 S	09.01.2020	2494	2537
25/7-10	06.09.2022	2775	2787
25/8-1	04.07.1970	1846	1853
25/8-3	17.04.1981	1841	1868
25/8-4	11.08.1992	1841	1846
25/8-6	27.06.1995	2527	2577
25/8-10 S	05.06.1997	1827	1890
25/8-11	02.12.1997	1876	1891
25/8-14 S	22.09.2003	2375	2540
25/8-16 A	23.05.2009	2306	2324
25/8-16 S	13.05.2009	2395	2400
25/8-18 S	23.10.2014	1860	1865
25/8-21 S	20.06.2021	2286	2310
25/10-1 R	03.08.1970	1960	1963
25/10-3	13.09.1970	1911	1921
25/10-5	17.07.1981	1991	2001
25/10-7 S	08.06.1996	2569	2617
25/10-8	07.04.1997	2209	2266
25/10-8 A	27.04.1997	2884	2986
25/10-9	27.07.2009	2484	2583
25/10-11	10.08.2011	2737	2779
25/10-12 S	18.01.2015	2081	2086
25/10-14 S	17.01.2016	2315	2341
25/10-15 S	02.08.2016	2334	2351
25/10-16 A	09.08.2018	3291	3365
25/10-16 B	18.08.2018	4212	4410
25/10-16 C	26.08.2018	3623	3769
25/10-16 S	30.07.2018	2324	2370
25/11-1	09.07.1967	1895	1920
25/11-3	14.10.1970	1852	1858
25/11-4	20.11.1970	1874	1896
25/11-6	01.10.1978	1903	1908
25/11-7	27.10.1978	1921	1930
25/11-8	16.10.1979	1925	1950
25/11-9	07.12.1980	1887	1902
25/11-10	17.02.1981	1968	1988
25/11-11	18.03.1981	1940	1960
25/11-12	07.05.1981	1904	1918
25/11-13	29.05.1981	1908	1920
25/11-18	24.10.1994	1834	1850
25/11-19 S	18.05.1995	2045	2050
25/11-19 SR	06.05.1997	2045	2050
25/11-20	23.10.1995	1767	1777
25/11-21 S	14.11.1995	1908	1929
25/11-22	24.01.1998	1774	1785
25/11-23	28.05.1999	1971	1975
25/11-27	29.05.2013	1842	1851
29/6-1	09.05.1982	2348	2373
29/9-1	24.02.1984	2355	2398
30/4-3 S	09.10.2016	2392	2418
30/7-3	25.10.1976	2539	2542
30/7-7	01.07.1979	2535	2538
30/8-4 S	04.02.2009	2533	2541
30/9-21 A	15.06.2008	2688	2735
30/9-21 S	30.04.2008	2628	2675
30/10-1	18.07.1973	2640	2679
30/10-2	28.03.1974	2653	2691
30/10-5	01.05.1975	2641	2683
31/2-10	31.10.1982	1535	1539
31/8-1	24.07.2011	1483	1494

Wellbores with cores

Wellbores with cores
Wellbore name	Wellbore completion date	Core length [m]
1/3-4	08.05.1983	9
1/6-1	26.11.1972	12
1/6-3	11.09.1974	115
1/6-5	02.09.1990	0
1/6-7	12.07.1992	19
1/9-1	17.02.1977	56
1/9-2	12.08.1977	63
1/9-3 R	30.09.1978	20
1/9-4	12.01.1978	89
1/9-5	16.12.1978	18
1/9-6 S	01.12.1982	90
1/9-7	02.08.2003	31
2/1-1	14.11.1972	12
2/4-2	24.12.1969	5
2/4-3	31.05.1970	44
2/4-4	01.08.1970	1
2/4-5	27.08.1970	26
2/4-6	10.12.1970	61
2/4-7	08.10.1971	119
2/4-8	29.03.1972	84
2/4-12	08.09.1975	30
2/5-1	22.11.1970	77
2/5-2	20.04.1971	69
2/5-3	15.06.1972	72
2/5-8	05.11.1988	27
2/5-11	14.11.1997	50
2/6-5	11.01.1997	2
2/7-1	11.12.1970	30
2/7-4	03.09.1972	62
2/7-5	01.01.1973	85
2/7-13	21.04.1979	17
2/7-14	20.01.1980	67
2/7-16	12.07.1980	75
2/7-19	02.02.1981	17
2/7-20	25.06.1988	9
2/7-27 S	17.06.1992	16
2/7-30	10.04.1995	88
2/8-2	30.07.1970	9
2/8-7	24.08.1975	2
2/8-17 S	17.01.1998	15
2/8-18 S	13.07.2012	25
2/11-9	23.12.1993	9
2/11-10 S	14.06.1994	4
3/7-2	20.06.1981	15
3/7-3	31.08.1981	10
7/9-1	29.05.1971	5
8/12-1	23.07.1971	6
15/12-1	06.09.1975	8
16/1-1	10.12.1967	2
16/1-10	05.02.2009	22
16/1-12	08.09.2009	1
16/1-13	21.01.2010	0
16/1-19 S	25.10.2013	13
16/2-3	28.09.2007	1
16/2-4	15.12.2007	2
25/8-1	04.07.1970	1
25/11-1	09.07.1967	10

EKOFISK FM

General information

Level below

Description

Wellbores penetrating

Wellbores with cores