Well Data Manager / Well Summary / 15/21a- 54

15/21a- 54

Decommissioned

Well Header

Well No

15/21a- 54

NSTA DEN No

5401

Well Name

Drill Seq No

Quadrant / Block

15 / 21 a

Surface Location

58.186705, 0.195723

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

CNOOC PETROLEUM EUROPE LIMITED

Original Operator

Sub Area Operator

CNOOC PETROLEUM EUROPE LIMITED

Licence No

P218

Licence Type

Production

Spud Date

1994-12-13

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (1)

15/21a- 54 Original

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

Rotary Table

Datum Elev (m)

22.860

Ground Elev (m)

Water Depth (m)

141.43

TD MD (m)

3221.130

TD TVDSS (m)

3113.840

TD Datum Depth (m)

24.384

TD Datum Type

Kelly Bushing

Spud Date

1994-12-13

TD Reached

1995-01-28

Completion Date

1995-02-05

Release Date

1999-02-05

Formation Tops (23)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
15/21a- 54	Nordland	Cenozoic	164.000	141.140	BGS LithoStrat Upper
	Nordland	Cenozoic	488.000	464.922	BGS LithoStrat Upper
	Lista	Mesozoic	1731.000	1642.053	BGS LithoStrat Upper
	Lista	Mesozoic	1737.000	1647.652	BGS LithoStrat Upper
	Balmoral Sandstone Unit	Cenozoic	1858.000	1761.520	BGS LithoStrat Upper
	Balmoral Tuffite	Cenozoic	1964.000	1862.427	BGS LithoStrat Upper
	Andrew Member	Palaeozoic	2017.000	1913.576	BGS LithoStrat Upper
	Andrew Mid Shale Unit	Palaeozoic	2231.000	2124.931	BGS LithoStrat Upper
	Lower Andrew Sandstone Unit	Cenozoic	2242.000	2135.902	BGS LithoStrat Upper
	Maureen	Mesozoic	2360.000	2253.762	BGS LithoStrat Upper
	Ekofisk	Mesozoic	2419.000	2312.743	BGS LithoStrat Upper
	Tor	Mesozoic	2431.000	2324.740	BGS LithoStrat Upper
	Flounder	Mesozoic	2667.000	2560.681	BGS LithoStrat Upper
	Herring	Mesozoic	2781.000	2674.618	BGS LithoStrat Upper
	Plenus Marl		2896.000	2789.544	BGS LithoStrat Upper
	Hidra	Mesozoic	2899.000	2792.542	BGS LithoStrat Upper
	Sola Formation		2919.000	2812.526	BGS LithoStrat Upper
	Valhall	Mesozoic	2928.000	2821.519	BGS LithoStrat Upper
	Kimmeridge Clay		2963.000	2856.485	BGS LithoStrat Upper
	Piper Shale Member		3071.000	2964.287	BGS LithoStrat Upper
	Piper Sand Member		3086.000	2979.251	BGS LithoStrat Upper
	Piper Basal Shale		3118.000	3011.170	BGS LithoStrat Upper
	Rattray		3127.000	3020.147	BGS LithoStrat Upper

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
15/21a- 54	0	0	0	23	23	1	0	1	0	View

Hydrocarbon Occurrence (3)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
15/21a- 54	Oil shows	OS	Pibroch Sandstone Member	3086.1000000000004	--	32 m thick
15/21a- 54	Oil shows	OS	PIBS	3118.4088	--	9 m thick
15/21a- 54	Oil shows	OS	Rattray Volcanics Member	3126.9432	--	94 m thick

Rock Samples (1)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
15/21a- 54	Cuttings	505.97	3221.13	--	--	--

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
15/21a- 54	164.28720092773438	3221.12646484375	10	0	2026-08-06 08:24:36.711311+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

15/21a- 54

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	1588.008	3199.9428000000003	10578
caliper	CALI	OGA Batch Unzipped	1588.6176	3201.6192	10585
comp_sonic	DT	OGA Batch Unzipped	1588.008	3221.1264	10717
deep_resistivity	RES_DEP	OGA Batch Unzipped	1588.6176	3208.4772000000003	10630
density_correction	DENC	OGA Batch Unzipped	1588.008	3199.9428000000003	10578
gamma_ray	GR	OGA Batch Unzipped	164.2872	3215.1828	19810
micro_resistivity	RES_MIC	OGA Batch Unzipped	1588.6176	3221.1264	10713
neutron_por	NEU	OGA Batch Unzipped	1588.008	3194.4564	10542
shallow_resistivity	RES_SLW	OGA Batch Unzipped	1588.008	3207.8676	10630
sp	SP	OGA Batch Unzipped	1588.008	3186.8364	10492

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
15/21a- 54	102	3221.126	3113.989	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 54\WELL_PATH\WDD_QC\15_21a-_54_wdd_WDD_FILE_1678371_DATACO_MAPPED.csv

15/21a- 54

Well Header

Wellbores (1)

Formation Tops (23)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (3)

Rock Samples (1)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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