Well Data Manager / Well Summary / 49/05a- 6

49/05a- 6

Decommissioned

Well Header

Well No

49/05a- 6

NSTA DEN No

4325

Well Name

Drill Seq No

Quadrant / Block

49 / 5 a

Surface Location

53.842302, 2.867768

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

NEO NEXT+ ENERGY E&P UK LIMITED

Original Operator

Sub Area Operator

SPIRIT ENERGY NORTH SEA LIMITED

Licence No

P455

Licence Type

Production

Spud Date

1991-01-30

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (2)

49/05a- 6 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Appraisal

Flow Class

Gas Well

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

40.173

Ground Elev (m)

Water Depth (m)

32.98

TD MD (m)

4651.614

TD TVDSS (m)

0.000

TD Datum Depth (m)

40.173

TD Datum Type

Kelly Bushing

Spud Date

1991-01-30

TD Reached

1991-03-22

Completion Date

1991-04-15

Release Date

1995-04-15

49/05a- 6Z Sidetrack Z parent: 49/05a- 6

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Development

Original Intent

Appraisal

Flow Class

Gas Well

Dev Type

Producer

Convention

Primary Target

Well Seq

WB2

Datum Type

Kelly Bushing

Datum Elev (m)

40.002

Ground Elev (m)

Water Depth (m)

32.98

TD MD (m)

0.000

TD TVDSS (m)

0.000

TD Datum Depth (m)

40.002

TD Datum Type

Kelly Bushing

Spud Date

1991-04-15

TD Reached

1991-06-18

Completion Date

1991-07-26

Release Date

1995-07-26

Formation Tops (40)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
49/05a- 6	Unknown		73.000	32.827	BGS LithoStrat Upper
	Unknown		465.000	424.827	BGS LithoStrat Upper
	Chalk	Mesozoic	1142.000	1101.827	BGS LithoStrat Upper
	Plenus Marl		2975.000	2934.827	BGS LithoStrat Upper
	Hidra	Mesozoic	2976.000	2935.827	BGS LithoStrat Upper
	Red Chalk	Mesozoic	3041.000	3000.827	BGS LithoStrat Upper
	Speeton Clay		3152.000	3111.827	BGS LithoStrat Upper
	Bunter Shale	Mesozoic	3215.000	3174.827	BGS LithoStrat Upper
	Grenzanhydrit	Palaeozoic	3268.000	3227.827	BGS LithoStrat Upper
	Aller Halite	Palaeozoic	3270.000	3229.827	BGS LithoStrat Upper
	Pegmatitanhydrit	Palaeozoic	3294.000	3253.827	BGS LithoStrat Upper
	Leine Halite Member	Palaeozoic	3300.000	3259.827	BGS LithoStrat Upper
	Hauptanhydrit	Palaeozoic	3467.000	3426.827	BGS LithoStrat Upper
	Grauer Salzton	Palaeozoic	3504.000	3463.827	BGS LithoStrat Upper
	Stassfurt Halite	Palaeozoic	3512.000	3471.827	BGS LithoStrat Upper
	Basalanhydrit	Palaeozoic	4097.000	4056.827	BGS LithoStrat Upper
49/05a- 6Z	Unknown		73.000	32.998	BGS LithoStrat Upper
	Unknown		465.000	424.920	BGS LithoStrat Upper
	Chalk	Mesozoic	1142.000	1030.501	BGS LithoStrat Upper
	Chalk	Mesozoic	2215.000	1760.451	BGS LithoStrat Upper
	Plenus Marl		2996.000	2328.889	BGS LithoStrat Upper
	Hidra	Mesozoic	2997.000	2329.600	BGS LithoStrat Upper
	Red Chalk	Mesozoic	3067.000	2379.150	BGS LithoStrat Upper
	Speeton Clay		3196.000	2465.634	BGS LithoStrat Upper
	Bunter Shale	Mesozoic	3281.000	2521.399	BGS LithoStrat Upper
	Grenzanhydrit	Palaeozoic	3389.000	2593.231	BGS LithoStrat Upper
	Aller Halite	Palaeozoic	3400.000	2600.655	BGS LithoStrat Upper
	Pegmatitanhydrit	Palaeozoic	3424.000	2616.802	BGS LithoStrat Upper
	Leine Halite Member	Palaeozoic	3439.000	2626.887	BGS LithoStrat Upper
	Hauptanhydrit	Palaeozoic	3595.000	2729.345	BGS LithoStrat Upper
	Grauer Salzton	Palaeozoic	3641.000	2759.229	BGS LithoStrat Upper
	Stassfurt Halite	Palaeozoic	3650.000	2765.098	BGS LithoStrat Upper
	Basalanhydrit	Palaeozoic	4182.000	3166.464	BGS LithoStrat Upper
	Hauptdolomit	Palaeozoic	4226.000	3203.390	BGS LithoStrat Upper
	Werraanhydrit	Palaeozoic	4243.000	3217.711	BGS LithoStrat Upper
	Zechsteinkalk	Palaeozoic	4265.000	3236.578	BGS LithoStrat Upper
	Kupferschiefer	Palaeozoic	4275.000	3245.198	BGS LithoStrat Upper
	Silverpit		4276.000	3246.072	BGS LithoStrat Upper
	Leman Sandstone		4493.000	3434.965	BGS LithoStrat Upper
	Coal Measures		4551.000	3483.747	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
49/05a- 6	4	0	0	16	16	1	0	1	0	View
49/05a- 6Z	6	4	0	24	24	1	0	1	2	View

Hydrocarbon Occurrence (4)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
49/05a- 6Z	Gas	GW	Leman Sandstone Formation	4493.4	--	57 m thick
49/05a- 6Z	DST	DST 1	--	4517.1	4542.1	Label / Rotliegend
49/05a- 6Z	DST	DST 1A	--	4517.2	4542.2	Not used for labelling, multiple DSTs in same play / Rotliegend
49/05a- 6Z	Gas shows	GS	Pennine Upper Coal Measures Formation	4550.8	--	124 m thick

Rock Samples (2)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
49/05a- 6	Cuttings	475.0	4109.95	--	--	see S82767 .
49/05a- 6Z	Cuttings	2229.98	4692.94	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
49/05a- 6	52.27320098876953	4109.0087890625	11	0	2026-08-06 14:28:04.62325+00	View Log
49/05a- 6Z	2076.449951171875	4670.2978515625	12	0	2026-08-06 14:28:11.087529+00	View Log

Source LAS Manifest (Best Curve per Type)

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49/05a- 6

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOB	CGG Digital Well Logs	2198.0652	4089.9588	10171
caliper	CALI	CGG Digital Well Logs	452.1708	4102.9128	16199
caliper	CALS	CGG Digital Well Logs	2198.0652	4102.9128	12500
comp_sonic	DTLF	CGG Digital Well Logs	452.1708	4093.7688	16036
deep_resistivity	LLD	CGG Digital Well Logs	452.9328	4107.7896	16352
density_correction	DRHO	CGG Digital Well Logs	2198.2176	4089.9588	10156
gamma_ray	GRD	CGG Digital Well Logs	2167.7376	3016.3008	5569
gamma_ray	GR	CGG Digital Well Logs	52.2732	4080.51	26433
micro_resistivity	MSFL	CGG Digital Well Logs	452.628	4103.0652	16237
neutron_por	NPHI	CGG Digital Well Logs	3375.0504	4082.796	4645
pef	PEF	CGG Digital Well Logs	452.1708	4090.416	13861
shallow_resistivity	LLS	CGG Digital Well Logs	452.1708	4109.0088	16370
sp	SP	CGG Digital Well Logs	452.1708	4074.8712	15767

49/05a- 6Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOB	CGG Digital Well Logs	4218.1272	4667.5548	2950
caliper	CAL	CGG Digital Well Logs	3421.0752	4667.5548	8062
caliper	CALI	CGG Digital Well Logs	4217.9748	4667.5548	2951
comp_sonic	DT	CGG Digital Well Logs	2076.45	4658.106	16877
comp_sonic	DTLF	CGG Digital Well Logs	3421.0752	4207.6116	5162
deep_resistivity	LLD	CGG Digital Well Logs	4217.9748	4670.298	2969
deep_resistivity	ILD	CGG Digital Well Logs	3421.2276	4220.8704	5248
density_correction	DRHO	CGG Digital Well Logs	4218.1272	4667.5548	2950
gamma_ray	CGR	CGG Digital Well Logs	4198.0104	4658.7156	3024
gamma_ray	GR	CGG Digital Well Logs	2088.9468	4658.7156	16863
gamma_ray	SGR	CGG Digital Well Logs	4198.0104	4658.5632	3023
med_resistivity	ILM	CGG Digital Well Logs	3421.0752	4221.7848	5255
micro_resistivity	MSFL	CGG Digital Well Logs	4217.9748	4664.6592	2932
neutron_por	NPHI	CGG Digital Well Logs	4218.1272	4662.2208	2915
pef	PEF	CGG Digital Well Logs	4218.1272	4667.5548	2950
shallow_resistivity	LLS	CGG Digital Well Logs	4218.1272	4670.298	2968
shear_sonic	DTSM	CGG Digital Well Logs	2076.45	3544.824	9002
sp	SP	CGG Digital Well Logs	4218.1272	4643.4756	2792
thorium	THOR	CGG Digital Well Logs	4198.0104	4658.7156	3024
uranium	URAN	CGG Digital Well Logs	4198.0104	4658.5632	3023

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
49/05a- 6	0	--	--	--
49/05a- 6Z	166	4693.000	3606.772	D:\BigSpatial\nsta_raw\CGG_Deviation\49-5a-6Z 14903di_CGG-Deviation.xlsx

49/05a- 6

Well Header

Wellbores (2)

Formation Tops (40)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (4)

Rock Samples (2)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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