Well Data Manager / Well Summary / 211/26-A7

211/26-A7

Present

Well Header

Well No

211/26-A7

NSTA DEN No

1612

Well Name

Drill Seq No

Quadrant / Block

211 / 26

Surface Location

61.101988, 1.071167

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

A-05

Operator

TAQA BRATANI LIMITED

Original Operator

Sub Area Operator

TAQA BRATANI LIMITED

Licence No

P232

Licence Type

Production

Spud Date

1979-10-09

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (5)

211/26-A7 Original

Abandoned Phase 1 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)

47.549

Ground Elev (m)

Water Depth (m)

152.40

TD MD (m)

4084.320

TD TVDSS (m)

TD Datum Depth (m)

47.549

TD Datum Type

Kelly Bushing

Spud Date

1979-10-09

TD Reached

1981-04-05

Completion Date

1981-06-27

Release Date

1985-06-27

211/26-A7J Sidetrack J parent: 211/26-A7

Abandoned Phase 2 Survey

Current Intent

Development

Original Intent

Development

Flow Class

Dev Type

Producer

Convention

Primary Target

Well Seq

Datum Type

Rotary Table

Datum Elev (m)

47.549

Ground Elev (m)

Water Depth (m)

152.40

TD MD (m)

4495.800

TD TVDSS (m)

TD Datum Depth (m)

TD Datum Type

Spud Date

1981-06-28

TD Reached

1981-07-27

Completion Date

1981-08-05

Release Date

1985-08-05

211/26-A7K Sidetrack K parent: 211/26-A7J

Abandoned Phase 2 Survey

Current Intent

Development

Original Intent

Development

Flow Class

Dev Type

Producer

Convention

Primary Target

Well Seq

Datum Type

Rotary Table

Datum Elev (m)

47.549

Ground Elev (m)

Water Depth (m)

152.40

TD MD (m)

4074.566

TD TVDSS (m)

TD Datum Depth (m)

TD Datum Type

Spud Date

1981-08-06

TD Reached

1981-08-07

Completion Date

1981-09-05

Release Date

1985-09-05

211/26-A7Y Sidetrack Y parent: 211/26-A7Z

Abandoned Phase 1 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Development

Flow Class

Oil Well

Dev Type

Producer

Convention

Primary Target

Well Seq

WB3

Datum Type

Kelly Bushing

Datum Elev (m)

47.549

Ground Elev (m)

Water Depth (m)

152.40

TD MD (m)

4724.400

TD TVDSS (m)

3158.642

TD Datum Depth (m)

47.549

TD Datum Type

Kelly Bushing

Spud Date

1981-10-20

TD Reached

1981-10-31

Completion Date

1981-11-30

Release Date

1985-11-30

211/26-A7Z Sidetrack Z parent: 211/26-A7J

Abandoned Phase 1 View Log 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)

47.549

Ground Elev (m)

Water Depth (m)

152.40

TD MD (m)

4786.579

TD TVDSS (m)

TD Datum Depth (m)

47.549

TD Datum Type

Kelly Bushing

Spud Date

1981-09-06

TD Reached

1981-10-13

Completion Date

1981-10-20

Release Date

1985-10-20

Formation Tops (15)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
211/26-A7	Unknown		196.000	148.450	BGS LithoStrat Upper
	Kimmeridge Clay		2960.000	2296.735	BGS LithoStrat Upper
	Upper Heather		2974.000	2306.613	BGS LithoStrat Upper
	Middle Heather		3001.000	2325.700	BGS LithoStrat Upper
	Upper Ness Member	Mesozoic	3014.000	2334.906	BGS LithoStrat Upper
	Mid Ness Shale		3031.000	2346.959	BGS LithoStrat Upper
	Lower Ness Member	Mesozoic	3037.000	2351.214	BGS LithoStrat Upper
	Etive	Mesozoic	3053.000	2362.561	BGS LithoStrat Upper
	Upper Rannoch	Mesozoic	3074.000	2377.455	BGS LithoStrat Upper
	Lower Rannoch	Mesozoic	3082.000	2383.128	BGS LithoStrat Upper
	Broom	Mesozoic	3093.000	2390.929	BGS LithoStrat Upper
	Dunlin	Mesozoic	3100.000	2395.894	BGS LithoStrat Upper
	Dunlin A Member	Pre-Cambrian	3143.000	2426.393	BGS LithoStrat Upper
	Statfjord	Mesozoic	3163.000	2440.597	BGS LithoStrat Upper
	Cormorant	Mesozoic	3166.000	2442.727	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	Core
211/26-A7	15	15	8	View
211/26-A7J	0	0	0
211/26-A7K	0	0	0
211/26-A7Y	0	0	2	View
211/26-A7Z	0	0	0

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (10)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
211/26-A7	Core #1	3016.0	3023.01	--	--	well re-boxed (originally curated Mar`82)
211/26-A7	Core #2	3023.01	3023.37	--	--	--
211/26-A7	Core #3	3023.37	3032.3	--	--	--
211/26-A7	Core #4	3032.46	3047.66	--	--	--
211/26-A7	Core #5	3048.91	3060.37	--	--	--
211/26-A7	Core #6	3061.11	3079.39	--	--	--
211/26-A7	Core #7	3079.39	3091.65	--	--	--
211/26-A7	Core #8	3092.81	3103.78	--	--	--
211/26-A7Y	Core #1	3755.14	3773.18	--	--	--
211/26-A7Y	Core #2	3900.22	3936.67	--	--	--

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Ingested
211/26-A7	3449.726318359375	4088.434814453125	9	2026-08-06 11:27:46.970885+00	View Log
211/26-A7Y	3992.956298828125	4738.6494140625	8	2026-08-06 17:35:29.370245+00	View Log
211/26-A7Z	4234.35791015625	4733.1630859375	5	2026-08-06 17:35:31.175863+00	View Log

Source LAS Manifest (Best Curve per Type)

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211/26-A7

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	CDEN	Energective CorrectedLOGS	3449.7264	4087.9776	4182
bulk_density	DEN	OGA Batch Unzipped	3449.7264	4087.9776	4189
caliper	CALI	OGA Batch Unzipped	3450.0312000000004	4088.4348	4190
caliper	CLD	Energective CorrectedLOGS	3460.242	4088.4348	4123
comp_sonic	DTC	Energective CorrectedLOGS	3468.1668	4081.5768000000003	4026
comp_sonic	DT	OGA Batch Unzipped	3447.288	4098.1884	4191
deep_resistivity	ILD	Energective CorrectedLOGS	3468.4716000000003	4086.9108	4059
deep_resistivity	RES_DEP	OGA Batch Unzipped	3447.288	4098.1884	4248
density_correction	DENC	OGA Batch Unzipped	3447.288	4098.1884	4272
density_correction	CDRH	Energective CorrectedLOGS	3468.0144	4088.13	4070
gamma_ray	GRI	Energective CorrectedLOGS	3449.7264	4083.1008	4125
gamma_ray	GR	OGA Batch Unzipped	3449.7264	4083.1008	4125
med_resistivity	ILM	Energective CorrectedLOGS	3468.6240000000003	4088.13	4066
med_resistivity	RES_MED	OGA Batch Unzipped	3447.288	4098.1884	4250
neutron_por	NEU	OGA Batch Unzipped	3449.7264	4085.9964	4176
neutron_por	CNEU	Energective CorrectedLOGS	3449.7264	4085.0820000000003	4145
tvdss	SS	Energective CorrectedLOGS	3449.7264	4088.5872000000004	4193
vshale	VSGR	Energective CorrectedLOGS	3467.1000000000004	4083.1008	4011
vshale	VSH	Energective CorrectedLOGS	3467.1000000000004	4083.1008	4011

211/26-A7Y

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	LDL	Energective CorrectedLOGS	4235.2722	4719.5232000000005	6344
bulk_density	DEN	OGA Batch Unzipped	4234.434	4719.5232000000005	3178
caliper	CLD	Energective CorrectedLOGS	4234.9674	4719.5232000000005	6360
caliper	CALI	OGA Batch Unzipped	4234.434	4719.5232000000005	3184
comp_sonic	DTC	Energective CorrectedLOGS	4445.5842	4734.3060000000005	3772
comp_sonic	DT	OGA Batch Unzipped	3992.88	4738.5732	4894
deep_resistivity	RES_DEP	OGA Batch Unzipped	3992.88	4738.5732	4894
deep_resistivity	ILD	Energective CorrectedLOGS	4473.6258	4738.725600000001	3480
deep_resistivity	LLD	Energective CorrectedLOGS	4471.7970000000005	4738.5732	3502
density_correction	DRH	Energective CorrectedLOGS	4235.4246	4719.5994	6355
density_correction	DENC	OGA Batch Unzipped	4234.434	4719.5232000000005	3184
gamma_ray	GRI	Energective CorrectedLOGS	3992.9562	4738.6494	9787
gamma_ray	GR	OGA Batch Unzipped	3992.88	4738.5732	4894
neutron_por	CNL	Energective CorrectedLOGS	4234.3578	4719.5232000000005	6368
neutron_por	NEU	OGA Batch Unzipped	4234.434	4719.5232000000005	3184
neutron_por	CNLC	Energective CorrectedLOGS	4235.2722	4719.5232000000005	6356
tvdss	SS	Energective CorrectedLOGS	3992.88	4739.030400000001	9793
vshale	VSH	Energective CorrectedLOGS	3994.7850000000003	4738.6494	9763
vshale	VSGR	Energective CorrectedLOGS	3994.7850000000003	4738.6494	9763

211/26-A7Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
caliper	CLD	Energective CorrectedLOGS	4234.3578	4719.5232000000005	6368
caliper	CALI	OGA Batch Unzipped	4234.5864	4656.1248000000005	2767
comp_sonic	DTC	Energective CorrectedLOGS	4463.8722	4733.1630000000005	3535
deep_resistivity	ILD	Energective CorrectedLOGS	4472.4066	4726.2288	3332
deep_resistivity	RES_DEP	OGA Batch Unzipped	3993.1848	4656.1248000000005	4351
gamma_ray	GRI	Energective CorrectedLOGS	4234.3578	4711.5984	6264
gamma_ray	GR	OGA Batch Unzipped	3993.1848	4656.1248000000005	4347
neutron_por	NEU	OGA Batch Unzipped	4234.5864	4656.1248000000005	2767
neutron_por	CNL	Energective CorrectedLOGS	4234.3578	4716.0942000000005	6323
tvdss	SS	Energective CorrectedLOGS	3992.88	4739.030400000001	9793

Survey Inventory (Deviation)

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Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
211/26-A7	329	4088.892	3138.383	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_211\211_26-A7\WELL_PATH\WDD_QC\211_26-A7_wdd_WDD_FILE_1674018_DATACO_MAPPED.csv
211/26-A7J	0	--	--	--
211/26-A7K	0	--	--	--
211/26-A7Y	352	4724.400	3162.675	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_211\211_26-A7Y\WELL_PATH\WDD_QC\211_26-A7Y_wdd_WDD_FILE_1925621_DATACO_MAPPED.csv
211/26-A7Z	364	4409.846	2974.678	G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_211\211_26-A7Z\WELL_PATH\WDD_QC\211_26-A7Z_wdd_WDD_FILE_1674019_DATACO_MAPPED.csv

211/26-A7

Well Header

Wellbores (5)

Formation Tops (15)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (0)

Rock Samples (10)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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