Well Data Manager / Well Summary / 211/28a-H21

211/28a-H21

Decommissioned

Well Header

Well No

211/28a-H21

NSTA DEN No

2959

Well Name

Drill Seq No

Quadrant / Block

211 / 28

Surface Location

61.068599, 1.401005

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

CNR INTERNATIONAL (U.K.) LIMITED

Original Operator

CONOCO UK Ltd

Sub Area Operator

CNR INTERNATIONAL (U.K.) LIMITED

Licence No

P204

Licence Type

Production

Spud Date

1986-05-25

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (1)

211/28a-H21 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Development

Flow Class

Oil Well

Dev Type

Injector

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

25.603

Ground Elev (m)

Water Depth (m)

148.13

TD MD (m)

3962.351

TD TVDSS (m)

3206.801

TD Datum Depth (m)

25.603

TD Datum Type

Kelly Bushing

Spud Date

1986-05-25

TD Reached

1986-06-10

Completion Date

1986-06-21

Release Date

1990-06-21

Formation Tops (12)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
211/28a-H21	Unknown		174.000	148.397	BGS LithoStrat Upper
	Unknown		3584.000	3558.397	BGS LithoStrat Upper
	Kimmeridge Clay		3679.000	3653.397	BGS LithoStrat Upper
	Heather	Mesozoic	3759.000	3733.397	BGS LithoStrat Upper
	Upper Brent		3785.000	3759.397	BGS LithoStrat Upper
	Upper Middle Shaly Unit		3792.000	3766.397	BGS LithoStrat Upper
	Mid Shale Member		3829.000	3803.397	BGS LithoStrat Upper
	Lower Middle Shaly Unit		3837.000	3811.397	BGS LithoStrat Upper
	Jurassic Massive Sand		3866.000	3840.397	BGS LithoStrat Upper
	Jurassic Mica Sand		3885.000	3859.397	BGS LithoStrat Upper
	Jurassic Basal Sand		3900.000	3874.397	BGS LithoStrat Upper
	Dunlin	Mesozoic	3915.000	3889.397	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
211/28a-H21	0	0	0	12	12	0	4	1	0	View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (5)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
211/28a-H21	Cuttings	3584.45	3962.4	--	--	came in as 211/28 -H21 .
211/28a-H21	Core #1	3767.33	3774.58	--	--	preserved samples taken .
211/28a-H21	Core #2	3776.47	3786.23	--	--	.
211/28a-H21	Core #3	3786.23	3804.51	--	--	.
211/28a-H21	Core #4	3804.51	3822.8	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
211/28a-H21	3350.51416015625	3969.258056640625	14	0	2026-08-06 11:38:12.767415+00	View Log

Source LAS Manifest (Best Curve per Type)

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211/28a-H21

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	3579.876	3936.7968	2343
bulk_density	CDEN	Energective CorrectedLOGS	3579.876	3968.496	2551
caliper	CALI	OGA Batch Unzipped	263.3472	3936.7968	2724
caliper	CLD	Energective CorrectedLOGS	3579.876	3969.2580000000003	2556
comp_sonic	DTC	Energective CorrectedLOGS	3350.514	3950.208	3936
comp_sonic	DT	OGA Batch Unzipped	3351.2760000000003	3936.7968	3843
deep_resistivity	RES_DEP	OGA Batch Unzipped	3351.2760000000003	3936.7968	3843
deep_resistivity	ILD	Energective CorrectedLOGS	3350.514	3961.4856	4010
density_correction	DENC	OGA Batch Unzipped	3580.4856	3936.7968	2339
density_correction	CDRH	Energective CorrectedLOGS	3579.876	3968.6484	2552
gamma_ray	GRI	Energective CorrectedLOGS	3350.514	3965.4480000000003	4036
gamma_ray	GR	OGA Batch Unzipped	263.3472	3936.7968	4224
med_resistivity	ILM	Energective CorrectedLOGS	3350.514	3961.6380000000004	4011
med_resistivity	RES_MED	OGA Batch Unzipped	3351.2760000000003	3936.7968	3843
neutron_por	CNEU	Energective CorrectedLOGS	3579.876	3964.0764000000004	2522
pef	CPEF	Energective CorrectedLOGS	3579.114	3968.496	2556
porosity	PHIE	OGA Batch Unzipped	3773.424	3928.8720000000003	1021
shallow_resistivity	RES_SLW	OGA Batch Unzipped	3351.2760000000003	3936.7968	3843
sp	SP	Energective CorrectedLOGS	3350.514	3968.0388000000003	4038
tvdss	SS	Energective CorrectedLOGS	3350.3616	3969.4104	4063
vshale	VSGR	Energective CorrectedLOGS	3353.7144000000003	3965.4480000000003	4015
vshale	VSH	Energective CorrectedLOGS	3353.7144000000003	3965.4480000000003	4015
water_sat	SW	OGA Batch Unzipped	3773.424	3928.8720000000003	1021

Survey Inventory (Deviation)

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Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
211/28a-H21	0	--	--	--

211/28a-H21

Well Header

Wellbores (1)

Formation Tops (12)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (0)

Rock Samples (5)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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