Well Data Manager / Well Summary / 28/04b- 1

28/04b- 1

Decommissioned

Well Header

Well No

28/04b- 1

NSTA DEN No

2475

Well Name

Drill Seq No

Quadrant / Block

28 / 4 b

Surface Location

56.956161, 0.624681

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

CHRYSAOR PRODUCTION (U.K.) LIMITED

Original Operator

Sub Area Operator

CHRYSAOR PRODUCTION (U.K.) LIMITED

Licence No

P422

Licence Type

Production

Spud Date

1984-08-25

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (2)

28/04b- 1 Original

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Unknown

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.908

Ground Elev (m)

Water Depth (m)

93.88

TD MD (m)

314.550

TD TVDSS (m)

288.600

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1984-08-25

TD Reached

1984-08-25

Completion Date

1984-08-26

Release Date

1988-08-26

28/04b- 1A Sidetrack A parent: 28/04b- 1

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)

93.88

TD MD (m)

2007.108

TD TVDSS (m)

1977.070

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1984-08-27

TD Reached

1984-09-09

Completion Date

1984-09-15

Release Date

1988-09-15

Formation Tops (14)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
28/04b- 1	Unknown		120.000	94.092	BGS LithoStrat Upper
	Unknown		324.000	298.092	BGS LithoStrat Upper
	Unknown		1161.000	1135.092	BGS LithoStrat Upper
	Moray	Mesozoic	1315.000	1289.092	BGS LithoStrat Upper
	Moray	Mesozoic	1340.000	1314.092	BGS LithoStrat Upper
	Montrose	Mesozoic	1529.000	1503.092	BGS LithoStrat Upper
	Chalk	Mesozoic	1559.000	1533.092	BGS LithoStrat Upper
	Chalk	Mesozoic	1658.000	1632.092	BGS LithoStrat Upper
	Plenus Marl		1741.000	1715.092	BGS LithoStrat Upper
	Chalk	Mesozoic	1744.000	1718.092	BGS LithoStrat Upper
	Cromer Knoll	Mesozoic	1750.000	1724.092	BGS LithoStrat Upper
	Humber	Mesozoic	1820.000	1794.092	BGS LithoStrat Upper
	Zechstein	Palaeozoic	1887.000	1861.092	BGS LithoStrat Upper
	Zechstein	Palaeozoic	1921.000	1895.092	BGS LithoStrat Upper

Lithology Intervals

28/04b- 1A Curve: SANDCOUNT 33 intervals · MD 492.862 – 1859.432 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/NSTA Centr...

Limestone (17)

Sandstone (12)

Coal (4)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log

Wellbore	Groups	Formations	Members	Strat Intervals	Tops	HC Occ	Core	Cuttings	DSTs
28/04b- 1	0	0	0	14	14	0	0	0	0	View
28/04b- 1A	7	10	4	0	0	2	0	1	0	View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (1)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
28/04b- 1A	Cuttings	332.23	2005.58	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
28/04b- 1A	88.84919738769531	2008.0224609375	9	0	2026-08-06 12:28:17.965139+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

28/04b- 1A

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOB	CGG Digital Well Logs	760.0188	2008.0224	8190
caliper	CALI	CGG Digital Well Logs	759.5616	2008.0224	8193
comp_sonic	DT	CGG Digital Well Logs	314.8584	1997.9640000000002	11032
deep_resistivity	ILD	CGG Digital Well Logs	315.3156	2006.9556	11101
density_correction	DRHO	CGG Digital Well Logs	760.0188	2007.8700000000001	8189
gamma_ray	GRD	CGG Digital Well Logs	742.95	2007.7176000000002	8300
gamma_ray	GR	CGG Digital Well Logs	88.84920000000001	2000.0976	12542
med_resistivity	ILM	CGG Digital Well Logs	315.3156	2006.8032	11100
neutron_por	NPHI	CGG Digital Well Logs	760.7808	2006.6508000000001	8176
pef	PEF	CGG Digital Well Logs	760.9332	2006.0412000000001	8171

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
28/04b- 1	0	--	--	--
28/04b- 1A	57	2007.108	1977.100	D:\BigSpatial\nsta_raw\CGG_Deviation\28-4b-1A 7098x_CGG-Deviation.xlsx

28/04b- 1

Well Header

Wellbores (2)

Formation Tops (14)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (0)

Rock Samples (1)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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