Well Data Manager / Well Summary / 4/26- 1

4/26- 1

Decommissioned

Well Header

Well No

4/26- 1

NSTA DEN No

2583

Well Name

Drill Seq No

Quadrant / Block

4 / 26

Surface Location

60.047331, 2.015911

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

NEO NEXT+ ENERGY ELF UK LIMITED

Original Operator

Sub Area Operator

NEO NEXT+ ENERGY ELF UK LIMITED

Licence No

P229

Licence Type

Production

Spud Date

1985-01-07

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (2)

4/26- 1 Original

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

103.94

TD MD (m)

1038.454

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1985-01-07

TD Reached

1985-01-16

Completion Date

1985-01-18

Release Date

1989-01-18

4/26- 1A Sidetrack A parent: 4/26- 1

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Gas Well

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

106.98

TD MD (m)

5268.468

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1985-01-18

TD Reached

1985-05-09

Completion Date

1985-06-18

Release Date

1989-06-18

Formation Tops (5)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
4/26- 1	Shetland	Mesozoic	2734.000	2708.092	Ternan
4/26- 1A	Frigg Sst		2143.000	2116.887	Ternan
	Teal Sst		2263.000	2236.776	Ternan
	Maureen Sst	Mesozoic	2618.000	2591.312	Ternan
	Shetland	Mesozoic	2734.000	2707.178	Ternan

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	DSTs
4/26- 1	0	0	0	31	1	0	0	1	0	View
4/26- 1A	0	0	0	0	4	0	0	1	0	View

Hydrocarbon Occurrence (2)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
4/26- 1	Gas shows	GS	Kimmeridge Clay Formation	4570.7808	--	106 m thick
4/26- 1	Gas shows	GS	Heather Formation	4676.8512	--	592 m thick

Rock Samples (2)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
4/26- 1	Cuttings	213.36	1036.32	--	--	see S32868 to S32870 .
4/26- 1A	Cuttings	228.6	5266.94	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
4/26- 1A	121.00559997558594	5288.369140625	13	0	2026-08-06 14:04:33.266994+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

4/26- 1A

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
apparent_water_resistivity	RWA	Energective CorrectedLOGS	886.80624264	5199.36874272	1600
bulk_density	RHOB	CGG Digital Well Logs	1999.6404	5273.497200000001	9760
bulk_density	DEN	OGA Batch Unzipped	1999.6404	5273.3448	9757
bulk_density	CDEN	Energective CorrectedLOGS	1999.46504856	5288.36924544	9944
caliper	CALI	CGG Digital Well Logs	1999.6404	5273.649600000001	9761
caliper	CLD	Energective CorrectedLOGS	1999.46504856	5275.720197840001	9861
comp_sonic	DT	CGG Digital Well Logs	874.1664000000001	5261.610000000001	28717
comp_sonic	DTC	Energective CorrectedLOGS	875.3763645600001	5262.9187807200005	28791
deep_resistivity	ILD	Energective CorrectedLOGS	875.3763645600001	5273.1294283199995	28858
deep_resistivity	RES_DEP	OGA Batch Unzipped	874.9284	5272.4304	28821
density_correction	DRHO	CGG Digital Well Logs	1999.6404	5273.649600000001	9761
density_correction	CDRH	Energective CorrectedLOGS	1999.46504856	5288.36924544	9944
gamma_ray	GRD	CGG Digital Well Logs	1999.6404	5264.9628	9695
gamma_ray	GRI	Energective CorrectedLOGS	121.0056	5277.548997840001	33837
gamma_ray	GR	CGG Digital Well Logs	120.8532	5267.8584	33774
gamma_ray	CGR	CGG Digital Well Logs	4513.1736	5264.8104	4933
med_resistivity	ILM	Energective CorrectedLOGS	875.3763645600001	5274.50102832	28867
neutron_por	NEU	OGA Batch Unzipped	1999.6404	5268.468	9661
neutron_por	CNEU	Energective CorrectedLOGS	1999.46504856	5283.340106400001	9911
neutron_por	NPHI	CGG Digital Well Logs	1999.6404	5268.468	9661
pef	PEF	CGG Digital Well Logs	1999.6404	2734.2084	4821
pef	CPEF	Energective CorrectedLOGS	1999.46504856	5273.73902832	9742
porosity	POR	Energective CorrectedLOGS	875.3763645600001	5274.34862832	28866
potassium	POTA	CGG Digital Well Logs	4513.1736	5264.9628	4934
sp	SP	Energective CorrectedLOGS	2683.7326970400004	5286.38807592	17079
thorium	THOR	CGG Digital Well Logs	4513.1736	5264.9628	4934
tvdss	SS	Energective CorrectedLOGS	120.7008	5288.52164544	33911
uranium	URAN	CGG Digital Well Logs	4513.1736	5264.9628	4934
vshale	VSH	Energective CorrectedLOGS	122.22476952000001	5277.24419784	33827
vshale	VSGR	Energective CorrectedLOGS	122.22476952000001	5277.24419784	33827
water_sat	SW	Energective CorrectedLOGS	875.3763645600001	5274.34862832	28866
water_sat_xo	SXO	Energective CorrectedLOGS	875.3763645600001	5274.34862832	28866

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
4/26- 1	0	--	--	--
4/26- 1A	144	5274.259	5240.328	D:\BigSpatial\nsta_raw\CGG_Deviation\4-26-1A 6105u-CGG_Deviation.xlsx

4/26- 1

Well Header

Wellbores (2)

Formation Tops (5)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (2)

Rock Samples (2)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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