Well Data Manager / Well Summary / 211/28a-H31

211/28a-H31

Decommissioned

Well Header

Well No

211/28a-H31

NSTA DEN No

3837

Well Name

Drill Seq No

Quadrant / Block

211 / 28 a

Surface Location

61.068491, 1.401122

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

CNR INTERNATIONAL (U.K.) LIMITED

Original Operator

Sub Area Operator

CNR INTERNATIONAL (U.K.) LIMITED

Licence No

P204

Licence Type

Production

Spud Date

1989-08-20

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (2)

211/28a-H31 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Development

Flow Class

Oil Well

Dev Type

Producer

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

49.987

Ground Elev (m)

Water Depth (m)

147.83

TD MD (m)

4400.093

TD TVDSS (m)

3205.582

TD Datum Depth (m)

49.987

TD Datum Type

Kelly Bushing

Spud Date

1989-08-20

TD Reached

1989-10-02

Completion Date

1989-10-08

Release Date

1993-10-08

211/28a-H31Z Sidetrack Z parent: 211/28a-H31

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Development

Flow Class

Oil Well

Dev Type

Producer

Convention

Primary Target

Well Seq

WB2

Datum Type

Kelly Bushing

Datum Elev (m)

49.987

Ground Elev (m)

Water Depth (m)

147.83

TD MD (m)

4454.957

TD TVDSS (m)

0.000

TD Datum Depth (m)

49.987

TD Datum Type

Kelly Bushing

Spud Date

1989-10-08

TD Reached

1989-10-16

Completion Date

1989-10-28

Release Date

1993-10-28

Formation Tops (15)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
211/28a-H31	Shetland	Mesozoic	4100.000	4050.013	BGS LithoStrat Upper
	Unknown		4206.000	4156.013	BGS LithoStrat Upper
	Kimmeridge Clay		4282.000	4232.013	BGS LithoStrat Upper
	Heather	Mesozoic	4342.000	4292.013	BGS LithoStrat Upper
	Jurassic Middle Shaly Unit		4344.000	4294.013	BGS LithoStrat Upper
	Mid Shale Member		4348.000	4298.013	BGS LithoStrat Upper
	Statfjord	Mesozoic	4356.000	4306.013	BGS LithoStrat Upper
	Unknown		4377.000	4327.013	BGS LithoStrat Upper
211/28a-H31Z	Shetland	Mesozoic	4057.000	4007.013	BGS LithoStrat Upper
	Unknown		4214.000	4164.013	BGS LithoStrat Upper
	Kimmeridge Clay		4299.000	4249.013	BGS LithoStrat Upper
	Heather	Mesozoic	4400.000	4350.013	BGS LithoStrat Upper
	Upper Sand Unit		4417.000	4367.013	BGS LithoStrat Upper
	Dunlin	Mesozoic	4431.000	4381.013	BGS LithoStrat Upper
	Statfjord	Mesozoic	4471.000	4421.013	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-H31	0	0	0	8	8	0	1	1	0	View
211/28a-H31Z	0	0	0	7	7	0	1	1	0	View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (4)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
211/28a-H31	Cuttings	3660.65	4450.08	--	--	came in as 211/28-H31/32 .
211/28a-H31	Core #1	4354.37	4381.5	--	--	jumbled / came in as 211/28-H31 .
211/28a-H31Z	Cuttings	4059.94	4504.94	--	--	sidetrack in as 211/28 -H31/32Z .
211/28a-H31Z	Core #1	4433.62	4442.46	--	--	jumbled .

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
211/28a-H31	4106.11328125	4445.35546875	12	0	2026-08-06 11:38:20.909667+00	View Log
211/28a-H31Z	4014.673095703125	4524.298828125	11	0	2026-08-06 11:38:21.613142+00	View Log

Source LAS Manifest (Best Curve per Type)

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211/28a-H31

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	OGA Batch Unzipped	4106.8752	4400.0928	1925
bulk_density	CDEN	Energective CorrectedLOGS	4106.1132	4439.8692	2191
caliper	CALI	OGA Batch Unzipped	4106.8752	4400.0928	1925
caliper	CLD	Energective CorrectedLOGS	4106.1132	4431.6396	2137
comp_sonic	DTC	Energective CorrectedLOGS	4106.1132	4433.316	2148
comp_sonic	DT	OGA Batch Unzipped	4106.8752	4400.0928	1925
deep_resistivity	ILD	Energective CorrectedLOGS	4106.1132	4443.222000000001	2213
deep_resistivity	RES_DEP	OGA Batch Unzipped	4106.8752	4400.0928	1925
density_correction	DENC	OGA Batch Unzipped	4106.8752	4400.0928	1925
density_correction	CDRH	Energective CorrectedLOGS	4106.1132	4440.174	2193
gamma_ray	GR	OGA Batch Unzipped	4106.8752	4400.0928	1925
gamma_ray	GRI	Energective CorrectedLOGS	4106.1132	4430.8776	2132
med_resistivity	RES_MED	OGA Batch Unzipped	4106.8752	4400.0928	1925
med_resistivity	ILM	Energective CorrectedLOGS	4106.1132	4445.3556	2227
neutron_por	CNEU	Energective CorrectedLOGS	4106.1132	4433.468400000001	2149
pef	CPEF	Energective CorrectedLOGS	4106.1132	4439.5644	2189
shallow_resistivity	RES_SLW	OGA Batch Unzipped	4106.8752	4400.0928	1925
sp	SP	OGA Batch Unzipped	4106.8752	4400.0928	1925
tvdss	SS	Energective CorrectedLOGS	4105.9608	4445.508	2229
vshale	VSH	Energective CorrectedLOGS	4106.8752	4430.7252	2126
vshale	VSGR	Energective CorrectedLOGS	4106.8752	4430.7252	2126

211/28a-H31Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	CDEN	Energective CorrectedLOGS	4054.2972000000004	4504.7916000000005	2957
caliper	CLD	Energective CorrectedLOGS	4054.2972000000004	4483.4556	2817
comp_sonic	DTC	Energective CorrectedLOGS	4055.5164000000004	4493.2092	2873
deep_resistivity	ILD	Energective CorrectedLOGS	4055.6688000000004	4502.5056	2933
density_correction	CDRH	Energective CorrectedLOGS	4054.6020000000003	4504.7916000000005	2955
gamma_ray	GRI	Energective CorrectedLOGS	4014.6732	4494.8856000000005	3152
med_resistivity	ILM	Energective CorrectedLOGS	4054.7544000000003	4500.9816	2929
neutron_por	CNEU	Energective CorrectedLOGS	4014.6732	4497.4764000000005	3169
pef	CPEF	Energective CorrectedLOGS	4054.2972000000004	4503.42	2948
sp	SP	Energective CorrectedLOGS	4054.2972000000004	4524.2988000000005	3085
tvdss	SS	Energective CorrectedLOGS	4014.5208000000002	4524.4512	3347
vshale	VSH	Energective CorrectedLOGS	4054.4496000000004	4492.9044	2878
vshale	VSGR	Energective CorrectedLOGS	4054.4496000000004	4492.9044	2878

Survey Inventory (Deviation)

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Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
211/28a-H31	0	--	--	--
211/28a-H31Z	0	--	--	--

211/28a-H31

Well Header

Wellbores (2)

Formation Tops (15)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (0)

Rock Samples (4)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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