Well Data Manager / Well Summary / 15/26a- 6

15/26a- 6

Decommissioned

Well Header

Well No

15/26a- 6

NSTA DEN No

4381

Well Name

Drill Seq No

Quadrant / Block

15 / 26 a

Surface Location

58.162920, 0.129589

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

PREMIER OIL (ENCORE PETROLEUM) LIMITED

Original Operator

Sub Area Operator

PREMIER OIL (ENCORE PETROLEUM) LIMITED

Licence No

P140

Licence Type

Production

Spud Date

1991-04-15

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (3)

15/26a- 6 Original

Abandoned Phase 3 Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Oil Well

Dev Type

Producer

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

141.73

TD MD (m)

3342.742

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1991-04-15

TD Reached

1991-04-15

Completion Date

1991-04-19

Release Date

1995-04-19

15/26a- 6A Sidetrack A parent: 15/26a- 6

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Dry Hole

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

141.73

TD MD (m)

2554.224

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1991-04-20

TD Reached

1991-05-13

Completion Date

1991-05-18

Release Date

1995-05-18

15/26a- 6Z Sidetrack Z parent: 15/26a- 6A

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Dry Hole

Dev Type

Convention

Primary Target

Well Seq

WB2

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

141.73

TD MD (m)

3342.742

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1991-05-18

TD Reached

1991-06-08

Completion Date

1991-06-17

Release Date

1995-06-17

Formation Tops (70)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
15/26a- 6A	Unknown		164.000	138.092	BGS LithoStrat Upper
	Nordland	Cenozoic	457.000	431.092	BGS LithoStrat Upper
	Nordland	Cenozoic	468.000	442.092	BGS LithoStrat Upper
	Nordland	Cenozoic	526.000	500.092	BGS LithoStrat Upper
	Hordaland	Cenozoic	557.000	531.092	BGS LithoStrat Upper
	Hordaland	Cenozoic	557.000	531.092	BGS LithoStrat Upper
	Hordaland	Cenozoic	667.000	641.092	BGS LithoStrat Upper
	Sand Unit		707.000	681.092	BGS LithoStrat Upper
	Clay Unit		785.000	759.092	BGS LithoStrat Upper
	Clay Unit		785.000	759.092	BGS LithoStrat Upper
	Horda Formation	Cenozoic	880.000	854.092	BGS LithoStrat Upper
	Horda Formation	Cenozoic	880.000	854.092	BGS LithoStrat Upper
	Horda Formation	Cenozoic	977.000	951.092	BGS LithoStrat Upper
	Horda Formation	Cenozoic	1218.000	1192.092	BGS LithoStrat Upper
	Tuffaceous Marker		1272.000	1246.092	BGS LithoStrat Upper
	Balder	Cenozoic	1301.000	1275.092	BGS LithoStrat Upper
	Balder	Cenozoic	1301.000	1275.092	BGS LithoStrat Upper
	Dornoch	Mesozoic	1341.000	1315.092	BGS LithoStrat Upper
	Dornoch	Mesozoic	1344.000	1318.092	BGS LithoStrat Upper
	Sele	Mesozoic	1440.000	1414.092	BGS LithoStrat Upper
	Sele	Mesozoic	1440.000	1414.092	BGS LithoStrat Upper
	Sele	Mesozoic	1541.000	1515.092	BGS LithoStrat Upper
	Forties	Mesozoic	1569.000	1543.092	BGS LithoStrat Upper
	Forties Sand	Mesozoic	1569.000	1543.092	BGS LithoStrat Upper
	Fergus B Formation		1656.000	1630.092	BGS LithoStrat Upper
	Sele	Mesozoic	1656.000	1630.092	BGS LithoStrat Upper
	Fergus B Formation		1700.000	1674.092	BGS LithoStrat Upper
	Balmoral Member		1766.000	1740.092	BGS LithoStrat Upper
	Balmoral Member		1766.000	1740.092	BGS LithoStrat Upper
	Glamis Member	Pre-Cambrian	1870.000	1844.092	BGS LithoStrat Upper
	Glamis Member	Pre-Cambrian	1870.000	1844.092	BGS LithoStrat Upper
	Andrew	Cenozoic	1943.000	1917.092	BGS LithoStrat Upper
	Andrew Member	Palaeozoic	1943.000	1917.092	BGS LithoStrat Upper
	Andrew Cenodiscus Unit		2108.000	2082.092	BGS LithoStrat Upper
	Maureen	Mesozoic	2170.000	2144.092	BGS LithoStrat Upper
	Maureen	Mesozoic	2170.000	2144.092	BGS LithoStrat Upper
	Ekofisk	Mesozoic	2228.000	2202.092	BGS LithoStrat Upper
	Ekofisk	Mesozoic	2228.000	2202.092	BGS LithoStrat Upper
	Tor	Mesozoic	2245.000	2219.092	BGS LithoStrat Upper
	Tor	Mesozoic	2245.000	2219.092	BGS LithoStrat Upper
	Flounder	Mesozoic	2409.000	2383.092	BGS LithoStrat Upper
	Flounder	Mesozoic	2409.000	2383.092	BGS LithoStrat Upper
	Flounder	Mesozoic	2425.000	2399.092	BGS LithoStrat Upper
	Valhall	Mesozoic	2491.000	2465.092	BGS LithoStrat Upper
	Valhall	Mesozoic	2491.000	2465.092	BGS LithoStrat Upper
	Kimmeridge Clay		2500.000	2474.092	BGS LithoStrat Upper
	Kimmeridge Clay		2500.000	2474.092	BGS LithoStrat Upper
	Kimmeridge Clay		2509.000	2483.092	BGS LithoStrat Upper
	Kimmeridge Clay		2530.000	2504.092	BGS LithoStrat Upper
	Piper	Mesozoic	2545.000	2519.092	BGS LithoStrat Upper
	Piper	Mesozoic	2545.000	2519.092	BGS LithoStrat Upper
	Piper Sand Member		2549.000	2523.092	BGS LithoStrat Upper
	Rattray		2564.000	2538.092	BGS LithoStrat Upper
	Rattray		2564.000	2538.092	BGS LithoStrat Upper
15/26a- 6Z	Montrose	Mesozoic	1870.000	1844.092	Lloyds Register
	Lista	Mesozoic	1870.000	1844.092	Lloyds Register
	Glamis Tuff		1870.000	1844.092	Lloyds Register
	Andrew Sandstone	Cenozoic	1945.000	1919.092	Lloyds Register
	Maureen	Mesozoic	2218.000	2192.092	Lloyds Register
	Ekofisk	Mesozoic	2269.000	2243.092	Lloyds Register
	Chalk	Mesozoic	2269.000	2243.092	Lloyds Register
	Upper Cretaceous Chalk	Mesozoic	2296.000	2270.092	Lloyds Register
	Cromer Knoll	Mesozoic	2950.000	2924.092	Lloyds Register
	Lower Cretaceous Undifferentiated	Mesozoic	2950.000	2924.092	Lloyds Register
	Kimmeridge Clay		2985.000	2959.092	Lloyds Register
	Humber	Mesozoic	2985.000	2959.092	Lloyds Register
	Piper	Mesozoic	3222.000	3196.092	Lloyds Register
	Fladen	Mesozoic	3279.000	3253.092	Lloyds Register
	Pentland	Mesozoic	3279.000	3253.092	Lloyds Register
	Rattray Volcanics	Mesozoic	3341.000	3315.092	Lloyds Register

Lithology Intervals

No lithology intervals ingested for this well.

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log

Wellbore	Groups	Formations	Members	Strat Intervals	Tops	HC Occ	Core	Cuttings
15/26a- 6	0	0	0	0	0	0	0	0
15/26a- 6A	0	0	0	54	54	3	1	1	View
15/26a- 6Z	5	8	3	15	16	1	0	1	View

Hydrocarbon Occurrence (1)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
15/26a- 6A	Oil shows	OS	HCLY	785.4696	--	94 m thick

Rock Samples (29)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
15/26a- 6A	Cuttings	457.2	2624.33	--	--	.
15/26a- 6A	Core #1	2554.22	2573.12	φ 16.3% (n=20) · Kh 35.7 mD (n=20) · So 7.9% (n=20) · Sw 61.9% (n=20) · Density 2.69 (n=20) · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES; NO ANALYSIS REQUIRED; PRESERVED SAMPLE \| BRN SST VF-FG EXT WL SORT HD FE CALC/CALC WH CL MIC DISSEM PYR OPS.; BRN SST VF-FG EXT WL SORT HD FE CALC/CALC WH CL MIC TR DISSEM PYR OPS.; BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS + CB WISPS.; BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS, (DISSEM PYR PCH).; BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS.; BRN SST VFG EXT WL SORT HD SL CALC WH CL MIC DISSEM PYR SLT WISPS OPS TR FE CALC.; BRN/GY LAM SST/SLTST VFG EXT WL SORT HD CALC WH CL MIC PYR.; BRN/GY SST VFG EXT WL SORT HD CALC/FE CALC WH CL MIC OPS SLT WISPS DISSEM PYR.; LT BRN/GY CALC SST VF-FG EXT WL SORT HD FE CALC REPL MIC WH CL TR DISSEM PYR OPS.; LT GY/WH GY CALC SST VF-FG EXT WL SORT HD FE CALC MIC WH CL DISSEM PYR.; LT GY/WH GY CALC SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY.; WH GY LIMEY SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY POROSITY.	--
15/26a- 6A	↳ Core Plug #1	2554.224	--	COREX SERVICES	PRESERVED SAMPLE	--
15/26a- 6A	↳ Core Plug #1	2554.468	--	COREX SERVICES	PRESERVED SAMPLE	--
15/26a- 6A	↳ Plug KMA 2	2554.529	--	φ 18.3% · Kh 33.2 mD · So 4.7% · Sw 75.9% · Density 2.65 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 3	2554.834	--	φ 20.2% · Kh 85.0 mD · So 14.7% · Sw 66.3% · Density 2.63 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS + CB WISPS.	--
15/26a- 6A	↳ Plug KMA 4	2555.138	--	φ 22.2% · Kh 96.7 mD · So 5.5% · Sw 73.3% · Density 2.64 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 5	2555.443	--	φ 16.9% · Kh 14.9 mD · So 3.0% · Sw 75.9% · Density 2.64 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS, (DISSEM PYR PCH).	--
15/26a- 6A	↳ Plug KMA 6	2555.702	--	φ 21.1% · Kh 135.0 mD · So 14.6% · Sw 67.6% · Density 2.65 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD SL CALC WH CL MIC SLT WISPS TR DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 7	2556.053	--	φ 15.0% · Kh 63.4 mD · So 11.4% · Sw 58.0% · Density 2.67 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| LT BRN/GY CALC SST VF-FG EXT WL SORT HD FE CALC REPL MIC WH CL TR DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 8	2556.312	--	φ 8.3% · Kh 1.2 mD · So 8.8% · Sw 53.3% · Density 2.72 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| LT GY/WH GY CALC SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY.	--
15/26a- 6A	↳ Plug KMA 9	2556.662	--	φ 7.2% · Kh 0.2 mD · So 6.8% · Sw 54.1% · Density 2.73 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| WH GY LIMEY SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY POROSITY.	--
15/26a- 6A	↳ Plug KMA 10	2556.967	--	φ 7.2% · Kh 0.2 mD · So 5.3% · Sw 56.5% · Density 2.74 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| WH GY LIMEY SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY POROSITY.	--
15/26a- 6A	↳ Plug KMA 11	2557.211	--	φ 7.5% · Kh 0.2 mD · So 8.2% · Sw 51.8% · Density 2.74 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| WH GY LIMEY SST VF-FG EXT WL SORT HD FE CALC MIC WH CL TR DISSEM PYR VUGHY POROSITY.	--
15/26a- 6A	↳ Plug KMA 12	2557.577	--	φ 8.6% · Kh 0.4 mD · So 8.9% · Sw 45.2% · Density 2.74 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| LT GY/WH GY CALC SST VF-FG EXT WL SORT HD FE CALC MIC WH CL DISSEM PYR.	--
15/26a- 6A	↳ Plug KMA 13	2557.882	--	φ 18.0% · Kh 60.8 mD · So 17.9% · Sw 41.3% · Density 2.68 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD FE CALC/CALC WH CL MIC TR DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 14	2558.186	--	φ 21.7% · Kh 98.9 mD · So 18.0% · Sw 41.8% · Density 2.65 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD FE CALC/CALC WH CL MIC DISSEM PYR OPS.	--
15/26a- 6A	↳ Plug KMA 15	2558.491	--	φ 20.7% · Kh 46.6 mD · So 11.6% · Sw 49.5% · Density 2.65 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VF-FG EXT WL SORT HD FE CALC/CALC WH CL MIC DISSEM PYR OPS.	--
15/26a- 6A	↳ Core Plug #1	2558.522	--	COREX SERVICES	PRESERVED SAMPLE	--
15/26a- 6A	↳ Core Plug #1	2558.735	--	COREX SERVICES	PRESERVED SAMPLE	--
15/26a- 6A	↳ Plug KMA 16	2558.857	--	φ 18.0% · Kh 8.2 mD · So 0.6% · Sw 79.3% · Density 2.69 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VFG EXT WL SORT HD SL CALC WH CL MIC DISSEM PYR SLT WISPS OPS TR FE CALC.	--
15/26a- 6A	↳ Plug KMA 17	2559.101	--	φ 20.2% · Kh 18.1 mD · So 4.4% · Sw 68.2% · Density 2.70 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VFG EXT WL SORT HD SL CALC WH CL MIC DISSEM PYR SLT WISPS OPS TR FE CALC.	--
15/26a- 6A	↳ Plug KMA 18	2559.406	--	φ 20.4% · Kh 19.6 mD · So 6.6% · Sw 66.6% · Density 2.71 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VFG EXT WL SORT HD SL CALC WH CL MIC DISSEM PYR SLT WISPS OPS TR FE CALC.	--
15/26a- 6A	↳ Plug KMA 19	2559.71	--	φ 20.4% · Kh 20.0 mD · So 3.0% · Sw 68.2% · Density 2.71 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN SST VFG EXT WL SORT HD SL CALC WH CL MIC DISSEM PYR SLT WISPS OPS TR FE CALC.	--
15/26a- 6A	↳ Plug KMA 20	2560.015	--	φ 19.9% · Kh 10.8 mD · So 2.3% · Sw 75.2% · Density 2.73 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN/GY SST VFG EXT WL SORT HD CALC/FE CALC WH CL MIC OPS SLT WISPS DISSEM PYR.	--
15/26a- 6A	↳ Plug KMA 21	2560.274	--	φ 14.0% · Kh 0.5 mD · So 1.6% · Sw 69.1% · Density 2.79 · COREX SERVICES	KLINKENBERG CORRECTED PERMEABILITY VALUES. OBTAINED FROM EMPIRICAL TABLES \| BRN/GY LAM SST/SLTST VFG EXT WL SORT HD CALC WH CL MIC PYR.	--
15/26a- 6A	↳ Core Plug #1	2560.32	--	COREX SERVICES	NO ANALYSIS REQUIRED	--
15/26a- 6A	↳ Core Plug #1	2573.119	--	COREX SERVICES	NO ANALYSIS REQUIRED	--
15/26a- 6Z	Cuttings	1834.9	3383.28	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
15/26a- 6A	167.63999938964844	2554.22412109375	9	0	2026-08-06 08:35:26.624998+00	View Log
15/26a- 6Z	167.63999938964844	3342.74169921875	9	0	2026-08-06 08:35:28.708617+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

15/26a- 6A

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	514.35	2554.224	5273
caliper	CALI	OGA Batch Unzipped	167.64000000000001	2554.224	15656
comp_sonic	DT	OGA Batch Unzipped	167.64000000000001	2554.224	15605
deep_resistivity	RES_DEP	OGA Batch Unzipped	167.64000000000001	2554.224	15651
density_correction	DENC	OGA Batch Unzipped	514.35	2554.224	5273
gamma_ray	GR	OGA Batch Unzipped	167.64000000000001	2554.224	15619
micro_resistivity	RES_MIC	OGA Batch Unzipped	167.64000000000001	2554.224	15639
neutron_por	NEU	OGA Batch Unzipped	514.35	2554.224	5269
shallow_resistivity	RES_SLW	OGA Batch Unzipped	167.64000000000001	2554.224	15651

15/26a- 6Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	1771.1928	3342.7416000000003	10313
caliper	CALI	OGA Batch Unzipped	460.85760000000005	3342.7416000000003	18908
comp_sonic	DT	OGA Batch Unzipped	460.85760000000005	3342.7416000000003	18911
deep_resistivity	RES_DEP	OGA Batch Unzipped	460.85760000000005	3342.7416000000003	18911
density_correction	DENC	OGA Batch Unzipped	1771.1928	3342.7416000000003	10313
gamma_ray	GR	OGA Batch Unzipped	167.64000000000001	3342.7416000000003	20835
micro_resistivity	RES_MIC	OGA Batch Unzipped	1718.4624000000001	3342.7416000000003	10659
neutron_por	NEU	OGA Batch Unzipped	1771.1928	3342.7416000000003	10313
shallow_resistivity	RES_SLW	OGA Batch Unzipped	460.85760000000005	3342.7416000000003	18911

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Max MD (m)	Max TVDSS (m)	Survey File
15/26a- 6	--	--	--
15/26a- 6A	--	--	--
15/26a- 6Z	--	--	--

15/26a- 6

Well Header

Wellbores (3)

Formation Tops (70)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (1)

Rock Samples (29)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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