Well Data Manager / Well Summary / 21/05a- 6

21/05a- 6

Decommissioned

Well Header

Well No

21/05a- 6

NSTA DEN No

13582

Well Name

Drill Seq No

Quadrant / Block

21 / 5 a

Surface Location

57.969207, 0.874016

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

CHRYSAOR PRODUCTION (U.K.) LIMITED

Original Operator

Sub Area Operator

CHRYSAOR PRODUCTION (U.K.) LIMITED

Licence No

P103

Licence Type

Production

Spud Date

2005-10-22

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (4)

21/05a- 6 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Oil Well

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Rotary Table

Datum Elev (m)

26.822

Ground Elev (m)

Water Depth (m)

141.12

TD MD (m)

3139.440

TD TVDSS (m)

2262.930

TD Datum Depth (m)

26.822

TD Datum Type

Rotary Table

Spud Date

2005-10-22

TD Reached

2005-11-07

Completion Date

2005-11-16

Release Date

2009-11-16

21/05a- 6X Sidetrack X parent: 21/05a- 6Y

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Gas and Condensate Well

Dev Type

Convention

Primary Target

Well Seq

WB4

Datum Type

Rotary Table

Datum Elev (m)

26.822

Ground Elev (m)

Water Depth (m)

141.12

TD MD (m)

4282.440

TD TVDSS (m)

3675.260

TD Datum Depth (m)

26.822

TD Datum Type

Rotary Table

Spud Date

2005-12-13

TD Reached

2005-12-23

Completion Date

2006-01-02

Release Date

2010-01-02

21/05a- 6Y Sidetrack Y parent: 21/05a- 6Z

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Gas and Condensate Well

Dev Type

Convention

Primary Target

Well Seq

WB3

Datum Type

Rotary Table

Datum Elev (m)

26.822

Ground Elev (m)

Water Depth (m)

141.12

TD MD (m)

3629.558

TD TVDSS (m)

3203.910

TD Datum Depth (m)

26.822

TD Datum Type

Rotary Table

Spud Date

2005-12-06

TD Reached

2005-12-06

Completion Date

2005-12-13

Release Date

2009-12-13

21/05a- 6Z Sidetrack Z parent: 21/05a- 6

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Gas and Condensate Well

Dev Type

Convention

Primary Target

Well Seq

WB2

Datum Type

Rotary Table

Datum Elev (m)

26.822

Ground Elev (m)

Water Depth (m)

141.12

TD MD (m)

4175.760

TD TVDSS (m)

3701.700

TD Datum Depth (m)

26.822

TD Datum Type

Rotary Table

Spud Date

2005-11-16

TD Reached

2005-11-26

Completion Date

2005-12-05

Release Date

2009-12-05

Formation Tops (52)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
21/05a- 6	Nordland	Cenozoic	168.000	141.178	BGS LithoStrat Upper
	Horda Formation	Cenozoic	2258.000	1660.806	BGS LithoStrat Upper
	Brodie Sandstone Member		2339.000	1697.233	BGS LithoStrat Upper
	Horda Formation	Cenozoic	2651.000	1841.903	BGS LithoStrat Upper
	Caran Sandstone Member		2686.000	1861.402	BGS LithoStrat Upper
	Horda Formation	Cenozoic	2751.000	1904.355	BGS LithoStrat Upper
	Tay Sands		2800.000	1942.280	BGS LithoStrat Upper
	Horda Formation	Cenozoic	2832.000	1968.685	BGS LithoStrat Upper
	Balder	Cenozoic	2910.000	2038.894	BGS LithoStrat Upper
	Sele	Mesozoic	2929.000	2057.101	BGS LithoStrat Upper
	Forties Sandstone Member	Mesozoic	2974.000	2100.990	BGS LithoStrat Upper
	Lista	Mesozoic	3096.000	2220.380	BGS LithoStrat Upper
21/05a- 6X	Unknown		168.000	141.178	BGS LithoStrat Upper
	Tor	Mesozoic	3414.000	3028.099	BGS LithoStrat Upper
	Flounder	Mesozoic	3469.000	3073.149	BGS LithoStrat Upper
	Herring	Mesozoic	3930.000	3424.136	BGS LithoStrat Upper
	Plenus Marl		4117.000	3546.233	BGS LithoStrat Upper
	Hidra	Mesozoic	4118.000	3546.967	BGS LithoStrat Upper
	Rodby	Mesozoic	4146.000	3567.881	BGS LithoStrat Upper
	Sola Formation		4151.000	3571.715	BGS LithoStrat Upper
	Kilda Member		4172.000	3587.949	BGS LithoStrat Upper
	Sola Formation		4185.000	3598.186	BGS LithoStrat Upper
	Britannia Sandstone Upper	Pre-Cambrian	4196.000	3606.848	BGS LithoStrat Upper
	Britannia Sandstone Lower	Palaeozoic	4255.000	3653.593	BGS LithoStrat Upper
21/05a- 6Z	Unknown		168.000	141.178	BGS LithoStrat Upper
	Unknown		914.000	887.178	BGS LithoStrat Upper
	Unknown		1009.000	982.178	BGS LithoStrat Upper
	Unknown		1054.000	1027.178	BGS LithoStrat Upper
	Horda Formation	Cenozoic	1733.000	1706.178	BGS LithoStrat Upper
	Brodie Sandstone Member		1841.000	1814.178	BGS LithoStrat Upper
	Horda Formation	Cenozoic	1884.000	1857.178	BGS LithoStrat Upper
	Caran Sandstone Member		2069.000	2042.178	BGS LithoStrat Upper
	Horda Formation	Cenozoic	2089.000	2062.178	BGS LithoStrat Upper
	Balder	Cenozoic	2256.000	2229.178	BGS LithoStrat Upper
	Sele	Mesozoic	2286.000	2259.178	BGS LithoStrat Upper
	Forties Sandstone Member	Mesozoic	2337.000	2310.178	BGS LithoStrat Upper
	Lista	Mesozoic	2499.000	2472.178	BGS LithoStrat Upper
	Balmoral Tuffite	Cenozoic	2525.000	2498.178	BGS LithoStrat Upper
	Andrew Member	Palaeozoic	2546.000	2519.178	BGS LithoStrat Upper
	Maureen	Mesozoic	2911.000	2884.178	BGS LithoStrat Upper
	Ekofisk	Mesozoic	3095.000	3068.178	BGS LithoStrat Upper
	Tor	Mesozoic	3153.000	3126.178	BGS LithoStrat Upper
	Flounder	Mesozoic	3469.000	3442.178	BGS LithoStrat Upper
	Herring	Mesozoic	3887.000	3860.178	BGS LithoStrat Upper
	Plenus Marl		4008.000	3981.178	BGS LithoStrat Upper
	Hidra	Mesozoic	4010.000	3983.178	BGS LithoStrat Upper
	Rodby	Mesozoic	4024.000	3997.178	BGS LithoStrat Upper
	Sola Formation		4026.000	3999.178	BGS LithoStrat Upper
	Kilda Member		4049.000	4022.178	BGS LithoStrat Upper
	Britannia Sandstone Upper	Pre-Cambrian	4063.000	4036.178	BGS LithoStrat Upper
	Britannia Sandstone Lower	Palaeozoic	4107.000	4080.178	BGS LithoStrat Upper
	Valhall	Mesozoic	4170.000	4143.178	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
21/05a- 6	12	12	1	View
21/05a- 6X	12	12	1	View
21/05a- 6Y	0	0	1	View
21/05a- 6Z	28	28	2	View

Hydrocarbon Occurrence (1)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
21/05a- 6	Oil shows	OS	Forties Sandstone Member	2973.6288	--	29 m thick

Rock Samples (0)

No cuttings, core, or plug samples recorded for this well.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
21/05a- 6	234.08639526367188	3129.6865234375	6	0	2026-08-06 10:10:36.044758+00	View Log
21/05a- 6X	3597.706787109375	4276.19189453125	5	0	2026-08-06 17:21:29.054685+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

21/05a- 6

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
comp_sonic	DTCO	CGG Digital Well Logs	1011.936	3108.96	13754
deep_resistivity	P40H	CGG Digital Well Logs	1002.4872	3126.7908	13940
deep_resistivity	A40H	CGG Digital Well Logs	1002.4872	3126.7908	13940
gamma_ray	GR	CGG Digital Well Logs	234.08640000000003	3129.6864	18935
med_resistivity	A34H	CGG Digital Well Logs	1002.4872	3126.7908	13940
med_resistivity	P34H	CGG Digital Well Logs	1002.4872	3126.7908	13940
med_resistivity	P28H	CGG Digital Well Logs	1002.4872	3126.7908	13940
med_resistivity	A28H	CGG Digital Well Logs	1002.4872	3126.7908	13940
neutron_por	TNPH	CGG Digital Well Logs	1002.1824	3126.3336	13939
shallow_resistivity	A22H	CGG Digital Well Logs	1002.4872	3126.9432	13941
shallow_resistivity	A16H	CGG Digital Well Logs	1002.4872	3126.9432	13941
shallow_resistivity	P16H	CGG Digital Well Logs	1002.4872	3126.7908	13940
shallow_resistivity	P22H	CGG Digital Well Logs	1002.4872	3126.7908	13940
shear_sonic	DTSM	CGG Digital Well Logs	2798.9784	2829.6108	202

21/05a- 6X

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
deep_resistivity	RESD	CGG Digital Well Logs	3601.3644000000004	4273.7532	4413
deep_resistivity	A40H	CGG Digital Well Logs	4094.0736	4273.7532	1180
gamma_ray	GR	CGG Digital Well Logs	3597.7068000000004	4276.1916	4453
med_resistivity	P34H	CGG Digital Well Logs	4094.0736	4273.7532	1180
med_resistivity	A28H	CGG Digital Well Logs	4094.0736	4273.7532	1180
med_resistivity	A34H	CGG Digital Well Logs	4094.0736	4273.7532	1180
med_resistivity	P28H	CGG Digital Well Logs	4094.0736	4273.7532	1180
med_resistivity	ATR	CGG Digital Well Logs	4084.32	4177.284000000001	611
neutron_por	TNPH	CGG Digital Well Logs	4093.4640000000004	4273.4484	1182
shallow_resistivity	P22H	CGG Digital Well Logs	4094.0736	4273.7532	1180
shallow_resistivity	P16H	CGG Digital Well Logs	4094.0736	4273.7532	1180

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
21/05a- 6	107	3139.440	2262.945	D:\BigSpatial\nsta_raw\CGG_Deviation\21-5a-6 29333bt_CGG-Deviation.xlsx
21/05a- 6X	149	4282.440	3675.352	D:\BigSpatial\nsta_raw\CGG_Deviation\21-5a-6X 29379bf_CGG-Deviation.xlsx
21/05a- 6Y	5	3629.558	3370.262	D:\BigSpatial\nsta_raw\CGG_Deviation\21-5a-6Y 29368f-CGG_Deviation.xlsx
21/05a- 6Z	0	--	--	--

21/05a- 6

Well Header

Wellbores (4)

Formation Tops (52)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (1)

Rock Samples (0)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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