Well Data Manager / Well Summary / 23/21- 7

23/21- 7

Decommissioned

Well Header

Well No

23/21- 7

NSTA DEN No

20306

Well Name

Drill Seq No

Quadrant / Block

23 / 21

Surface Location

57.314558, 2.130372

Source Datum

ED50

Subsea Well

Unknown

Platform

Slot No

Operator

CHRYSAOR LIMITED

Original Operator

Sub Area Operator

CHRYSAOR LIMITED

Licence No

P101

Licence Type

Production

Spud Date

2008-12-10

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (4)

23/21- 7 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Gas and Oil Well

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Rotary Table

Datum Elev (m)

32.309

Ground Elev (m)

Water Depth (m)

85.34

TD MD (m)

3527.450

TD TVDSS (m)

3171.139

TD Datum Depth (m)

32.309

TD Datum Type

Rotary Table

Spud Date

2008-12-10

TD Reached

2008-12-24

Completion Date

2009-01-09

Release Date

2013-01-09

23/21- 7X Sidetrack X parent: 23/21- 7Y

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Gas and Oil Well

Dev Type

Convention

Primary Target

Well Seq

WB4

Datum Type

Rotary Table

Datum Elev (m)

32.309

Ground Elev (m)

Water Depth (m)

85.34

TD MD (m)

3733.190

TD TVDSS (m)

3091.586

TD Datum Depth (m)

32.309

TD Datum Type

Rotary Table

Spud Date

2009-02-10

TD Reached

2009-02-15

Completion Date

2009-02-23

Release Date

2013-02-23

23/21- 7Y Sidetrack Y parent: 23/21- 7Z

Abandoned Phase 3 Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Dry Hole

Dev Type

Convention

Primary Target

Well Seq

WB3

Datum Type

Rotary Table

Datum Elev (m)

32.309

Ground Elev (m)

Water Depth (m)

85.34

TD MD (m)

3277.514

TD TVDSS (m)

2950.464

TD Datum Depth (m)

32.309

TD Datum Type

Rotary Table

Spud Date

2009-01-29

TD Reached

2009-02-01

Completion Date

2009-02-10

Release Date

2013-02-10

23/21- 7Z Sidetrack Z parent: 23/21- 7

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Appraisal

Original Intent

Appraisal

Flow Class

Gas Well

Dev Type

Convention

Primary Target

Well Seq

WB2

Datum Type

Rotary Table

Datum Elev (m)

32.309

Ground Elev (m)

Water Depth (m)

85.34

TD MD (m)

3333.293

TD TVDSS (m)

3135.782

TD Datum Depth (m)

32.309

TD Datum Type

Rotary Table

Spud Date

2009-01-09

TD Reached

2009-01-22

Completion Date

2009-01-29

Release Date

2013-01-29

Formation Tops (27)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
23/21- 7	Nordland	Cenozoic	118.000	85.691	BGS LithoStrat Upper
	Balder	Cenozoic	3217.000	2894.074	BGS LithoStrat Upper
	Sele	Mesozoic	3246.000	2919.506	BGS LithoStrat Upper
	Forties Member		3272.000	2942.621	BGS LithoStrat Upper
	Lista	Mesozoic	3482.000	3130.215	BGS LithoStrat Upper
23/21- 7X	Unknown		118.000	85.691	BGS LithoStrat Upper
	Unknown		853.000	820.685	BGS LithoStrat Upper
	Nordland	Cenozoic	914.000	881.685	BGS LithoStrat Upper
	Balder	Cenozoic	3475.000	2887.963	BGS LithoStrat Upper
	Sele	Mesozoic	3512.000	2916.855	BGS LithoStrat Upper
	Forties Member		3539.000	2938.287	BGS LithoStrat Upper
	Lista	Mesozoic	3652.000	3028.354	BGS LithoStrat Upper
	Andrew Member	Palaeozoic	3690.000	3058.141	BGS LithoStrat Upper
	Maureen	Mesozoic	3708.000	3072.169	BGS LithoStrat Upper
23/21- 7Y	Unknown		118.000	85.691	BGS LithoStrat Upper
	Nordland	Cenozoic	853.000	820.685	BGS LithoStrat Upper
	Balder	Cenozoic	3200.000	2850.331	BGS LithoStrat Upper
	Sele	Mesozoic	3238.000	2883.150	BGS LithoStrat Upper
	Forties Member		3262.000	2904.090	BGS LithoStrat Upper
23/21- 7Z	Unknown		118.000	85.691	BGS LithoStrat Upper
	Nordland	Cenozoic	914.000	881.685	BGS LithoStrat Upper
	Nordland	Cenozoic	978.000	945.594	BGS LithoStrat Upper
	Balder	Cenozoic	3046.000	2864.053	BGS LithoStrat Upper
	Sele	Mesozoic	3087.000	2902.462	BGS LithoStrat Upper
	Forties Member		3100.000	2914.666	BGS LithoStrat Upper
	Lista	Mesozoic	3235.000	3042.129	BGS LithoStrat Upper
	Maureen	Mesozoic	3285.000	3089.759	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
23/21- 7	5	5	1	View
23/21- 7X	9	9	1	View
23/21- 7Y	5	5	1	View
23/21- 7Z	8	8	1	View

Hydrocarbon Occurrence (3)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
23/21- 7	Gas shows	GS	Forties Sandstone Member	3272.3328	--	209 m thick
23/21- 7X	Gas shows	GS	Forties Sandstone Member	3539.4900000000002	--	112 m thick
23/21- 7Z	Gas shows	GS	Forties Sandstone Member	3099.6636000000003	--	136 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
23/21- 7	864.565185546875	3432.81005859375	7	0	2026-08-06 18:01:37.762189+00	View Log
23/21- 7Z	112.92839813232422	3333.292724609375	7	0	2026-08-06 18:01:44.856048+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

23/21- 7

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOZ	CGG Digital Well Logs	925.0680000000001	3333.2928	15803
caliper	HCAL	CGG Digital Well Logs	864.5652	3353.7144000000003	16334
comp_sonic	DT4P	CGG Digital Well Logs	929.7924	3432.8100000000004	16414
density_correction	HDRA	CGG Digital Well Logs	924.7632000000001	3333.1404	15804
gamma_ray	GR	CGG Digital Well Logs	873.2520000000001	3327.5016	16105
gamma_ray	HCGR	CGG Digital Well Logs	869.8992000000001	3323.3868	16100
gamma_ray	HSGR	CGG Digital Well Logs	869.8992000000001	3323.3868	16100
neutron_por	TNPH	CGG Digital Well Logs	874.7760000000001	3325.9776	16085
neutron_por	NPOR	CGG Digital Well Logs	874.7760000000001	3333.2928	16133
pef	PEFZ	CGG Digital Well Logs	929.0304000000001	3333.2928	15777
shear_sonic	DT4S	CGG Digital Well Logs	1487.8812	3330.8544	1108

23/21- 7Z

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOZ	CGG Digital Well Logs	3086.4048000000003	3320.1864	1535
caliper	HCAL	CGG Digital Well Logs	3085.7952	3333.2928	1625
comp_sonic	DT4P	CGG Digital Well Logs	3085.7952	3325.9776	1577
density_correction	HDRA	CGG Digital Well Logs	3086.1000000000004	3321.7104000000004	1547
gamma_ray	HCGR	CGG Digital Well Logs	2958.3888	3311.0424000000003	2315
gamma_ray	HSGR	CGG Digital Well Logs	2958.3888	3311.0424000000003	2315
gamma_ray	GR	CGG Digital Well Logs	112.92840000000001	3315.3096	21014
neutron_por	NPOR	CGG Digital Well Logs	2955.6456000000003	3316.5288	2369
pef	PEFZ	CGG Digital Well Logs	3087.6240000000003	3320.7960000000003	1531
shear_sonic	DT4S	CGG Digital Well Logs	115.21440000000001	3326.13	16090

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
23/21- 7	118	3527.450	3171.269	D:\BigSpatial\nsta_raw\CGG_Deviation\23-21-7 30212ek_CGG-Deviation.xls
23/21- 7X	127	3733.190	3091.707	D:\BigSpatial\nsta_raw\CGG_Deviation\23-21-7X 30266br_CGG-Deviation.xls
23/21- 7Y	113	3277.514	2917.652	D:\BigSpatial\nsta_raw\CGG_Deviation\23-21-7Y 30259z-CGG-deviation.xls
23/21- 7Z	116	3333.293	3135.933	D:\BigSpatial\nsta_raw\CGG_Deviation\23-21-7Z 30227dr_CGG-Deviation.xls

23/21- 7

Well Header

Wellbores (4)

Formation Tops (27)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (3)

Rock Samples (0)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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