Well Data Manager / Well Summary / 15/21a- 52

15/21a- 52

Decommissioned

Well Header

Well No

15/21a- 52

NSTA DEN No

5150

Well Name

Drill Seq No

Quadrant / Block

15 / 21 a

Surface Location

58.235014, 0.112057

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

SERICA ENERGY NORTE LIMITED

Original Operator

Sub Area Operator

SERICA ENERGY NORTE LIMITED

Licence No

P218

Licence Type

Production

Spud Date

1993-12-11

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (3)

15/21a- 52 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Oil Well

Dev Type

Convention

Primary Target

SCB

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

140.21

TD MD (m)

2942.844

TD TVDSS (m)

2757.221

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1993-12-11

TD Reached

1994-01-04

Completion Date

1994-01-05

Release Date

1998-01-05

15/21a- 52Y Sidetrack Y parent: 15/21a- 52Z

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Dry Hole

Dev Type

Convention

Primary Target

SCC

Well Seq

WB3

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

140.21

TD MD (m)

3003.804

TD TVDSS (m)

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1995-10-31

TD Reached

1995-11-24

Completion Date

1995-11-24

Release Date

1999-11-24

15/21a- 52Z Sidetrack Z parent: 15/21a- 52

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Oil Well

Dev Type

Convention

Primary Target

SCB

Well Seq

WB2

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

140.21

TD MD (m)

2968.752

TD TVDSS (m)

2859.024

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1994-01-04

TD Reached

1994-01-24

Completion Date

1994-01-24

Release Date

1998-01-24

Formation Tops (58)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
15/21a- 52	Unknown		134.000	108.092	BGS LithoStrat Upper
	Nordland	Cenozoic	490.000	464.081	BGS LithoStrat Upper
	Horda Formation	Cenozoic	661.000	635.056	BGS LithoStrat Upper
	Forties Sand	Mesozoic	1399.000	1330.628	BGS LithoStrat Upper
	Lista	Mesozoic	1478.000	1402.379	BGS LithoStrat Upper
	Balmoral Sandstone Unit	Cenozoic	1514.000	1438.035	BGS LithoStrat Upper
	Balmoral Tuffite	Cenozoic	1823.000	1734.530	BGS LithoStrat Upper
	Vanderbeckei Marine Band		1865.000	1759.420	BGS LithoStrat Upper
	Andrew Mid Shale Unit	Palaeozoic	2106.000	2002.682	BGS LithoStrat Upper
	Lower Andrew Sandstone Unit	Cenozoic	2124.000	2010.953	BGS LithoStrat Upper
	Maureen	Mesozoic	2203.000	2071.812	BGS LithoStrat Upper
	Ekofisk	Mesozoic	2295.000	2183.621	BGS LithoStrat Upper
	Tor	Mesozoic	2314.000	2169.261	BGS LithoStrat Upper
	Flounder	Mesozoic	2450.000	2305.844	BGS LithoStrat Upper
	Herring	Mesozoic	2528.000	2415.410	BGS LithoStrat Upper
	Hidra	Mesozoic	2563.000	2416.230	BGS LithoStrat Upper
	V3 Member		2604.000	2462.635	BGS LithoStrat Upper
	V2A Unit		2631.000	2484.442	BGS LithoStrat Upper
	V1 member		2660.000	2519.558	BGS LithoStrat Upper
	Kimmeridge Clay		2675.000	2540.521	BGS LithoStrat Upper
	Piper Marine Unit		2678.000	2510.217	BGS LithoStrat Upper
	Piper Paralic Unit		2710.000	2538.685	BGS LithoStrat Upper
	Piper Coaly Unit		2743.000	2586.954	BGS LithoStrat Upper
	Rattray		2758.000	2631.640	BGS LithoStrat Upper
	Sgiath Formation		2798.000	2655.805	BGS LithoStrat Upper
	Sgiath Formation		2821.000	2632.217	BGS LithoStrat Upper
	Sgiath Formation		2836.000	2713.882	BGS LithoStrat Upper
	Sgiath Formation		2862.000	2737.567	BGS LithoStrat Upper
	Zechstein	Palaeozoic	2871.000	2739.950	BGS LithoStrat Upper
15/21a- 52Z	Unknown		166.000	140.092	BGS LithoStrat Upper
	Sele	Mesozoic	1356.000	1291.457	BGS LithoStrat Upper
	Cromarty Member		1433.000	1362.024	BGS LithoStrat Upper
	Sele	Mesozoic	1472.000	1398.530	BGS LithoStrat Upper
	Forties Sandstone Member	Mesozoic	1506.000	1430.690	BGS LithoStrat Upper
	Lista	Mesozoic	1539.000	1461.892	BGS LithoStrat Upper
	Balmoral Sandstone Unit	Cenozoic	1631.000	1550.403	BGS LithoStrat Upper
	Lista	Mesozoic	1847.000	1758.025	BGS LithoStrat Upper
	Balmoral Tuffite	Cenozoic	1877.000	1786.374	BGS LithoStrat Upper
	Upper Andrew Sandstone Unit	Cenozoic	1899.000	1807.065	BGS LithoStrat Upper
	Andrew Mid Shale Unit	Palaeozoic	2084.000	1980.285	BGS LithoStrat Upper
	Lower Andrew Sandstone Unit	Cenozoic	2122.000	2015.907	BGS LithoStrat Upper
	Maureen	Mesozoic	2229.000	2116.363	BGS LithoStrat Upper
	Ekofisk	Mesozoic	2301.000	2184.240	BGS LithoStrat Upper
	Tor	Mesozoic	2322.000	2204.147	BGS LithoStrat Upper
	Flounder	Mesozoic	2470.000	2345.817	BGS LithoStrat Upper
	Herring	Mesozoic	2573.000	2445.724	BGS LithoStrat Upper
	Hidra	Mesozoic	2596.000	2468.149	BGS LithoStrat Upper
	Valhall	Mesozoic	2621.000	2492.558	BGS LithoStrat Upper
	Upper Hot Shale Member		2640.000	2511.136	BGS LithoStrat Upper
	Galley Sand		2679.000	2549.336	BGS LithoStrat Upper
	Lower Hot Shale Member		2708.000	2577.819	BGS LithoStrat Upper
	Claymore Sandstone	Mesozoic	2756.000	2625.100	BGS LithoStrat Upper
	Lower Hot Shale Member		2809.000	2677.378	BGS LithoStrat Upper
	Lower Claymore Sands		2829.000	2697.084	BGS LithoStrat Upper
	Piper Basal Shale		2886.000	2753.157	BGS LithoStrat Upper
	Paralic Unit		2914.000	2780.680	BGS LithoStrat Upper
	Sgiath Coaly Unit		2923.000	2789.530	BGS LithoStrat Upper
	Rattray Volcanics	Mesozoic	2942.000	2808.233	BGS LithoStrat Upper

Lithology Intervals

No lithology intervals ingested for this well.

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log

Wellbore	Strat Intervals	Tops	HC Occ	Core	Cuttings
15/21a- 52	29	29	2	0	1	View
15/21a- 52Y	0	0	0	2	1	View
15/21a- 52Z	29	29	2	2	1	View

Hydrocarbon Occurrence (2)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
15/21a- 52Z	Mixed shows	OGS	Claymore Sandstone Member	2756.0016	--	53 m thick
15/21a- 52Z	Mixed	OGE	Claymore Sandstone Member	2828.5440000000003	--	57 m thick

Rock Samples (7)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
15/21a- 52	Cuttings	496.82	2968.75	--	--	--
15/21a- 52Y	Cuttings	1316.74	3029.71	--	--	--
15/21a- 52Y	Core #1	2792.58	2815.74	--	--	--
15/21a- 52Y	Core #2	2815.74	2836.32	--	--	--
15/21a- 52Z	Cuttings	1362.46	2994.66	--	--	--
15/21a- 52Z	Core #1	2765.45	2784.65	--	--	--
15/21a- 52Z	Core #2	2906.88	2919.22	--	--	--

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Ingested
15/21a- 52	166.11599731445312	2942.843994140625	9	2026-08-06 08:24:32.948233+00	View Log
15/21a- 52Y	2657.246337890625	3003.803955078125	2	2026-08-06 08:24:34.947841+00	View Log
15/21a- 52Z	1147.2672119140625	2968.751953125	9	2026-08-06 08:24:35.201857+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

15/21a- 52

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	1251.8136	2900.172	10812
caliper	CALI	OGA Batch Unzipped	1251.8136	2899.7148	10809
comp_sonic	DT	OGA Batch Unzipped	1251.5088	2907.4872	10862
deep_resistivity	RES_DEP	OGA Batch Unzipped	1271.6256	2942.844	10964
density_correction	DENC	OGA Batch Unzipped	1271.6256	2900.172	10687
gamma_ray	GR	OGA Batch Unzipped	166.116	2942.844	17987
med_resistivity	RES_MED	OGA Batch Unzipped	1271.6256	2942.844	10956
neutron_por	NEU	OGA Batch Unzipped	1251.8136	2893.6188	10769
sp	SP	OGA Batch Unzipped	1271.6256	2915.5644	10788

15/21a- 52Y

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
caliper	CALI	OGA Batch Unzipped	2657.2464	3003.804	2275
gamma_ray	GR	OGA Batch Unzipped	2728.5696000000003	2913.126	654

15/21a- 52Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	1147.2672	2968.752	11948
caliper	CALI	OGA Batch Unzipped	1147.2672	2968.752	11953
comp_sonic	DT	OGA Batch Unzipped	1147.2672	2968.752	11953
deep_resistivity	RES_DEP	OGA Batch Unzipped	1147.2672	2968.752	11953
density_correction	DENC	OGA Batch Unzipped	1147.2672	2968.752	11948
gamma_ray	GR	OGA Batch Unzipped	1147.2672	2968.752	11948
med_resistivity	RES_MED	OGA Batch Unzipped	1147.2672	2968.752	11953
neutron_por	NEU	OGA Batch Unzipped	1147.2672	2968.752	11948
sp	SP	OGA Batch Unzipped	1147.2672	2968.752	11953

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
15/21a- 52	81	2967.228	2762.953	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 52\WELL_PATH\WDD_QC\15_21a-_52_wdd_WDD_FILE_1678368_DATACO_MAPPED.csv
15/21a- 52	86	3029.712	2913.371	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 52\WELL_PATH\WDD_QC\15_21a-_52_wdd_WDD_FILE_1678369_DATACO_MAPPED.csv
15/21a- 52	84	2993.136	2858.640	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 52\WELL_PATH\WDD_QC\15_21a-_52_wdd_WDD_FILE_1678370_DATACO_MAPPED.csv
15/21a- 52Y	86	3029.712	2913.371	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 52Y\WELL_PATH\WDD_QC\15_21a-_52Y_wdd_WDD_FILE_1922702_DATACO_MAPPED.csv
15/21a- 52Z	84	2993.136	2858.640	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a- 52Z\WELL_PATH\WDD_QC\15_21a-_52Z_wdd_WDD_FILE_1922703_DATACO_MAPPED.csv

15/21a- 52

Well Header

Wellbores (3)

Formation Tops (58)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (2)

Rock Samples (7)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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