Well Data Manager / Well Summary / 30/07a- 4

30/07a- 4

Decommissioned

Well Header

Well No
30/07a- 4
NSTA DEN No
2538
Well Name
--
Drill Seq No
4
Quadrant / Block
30 / 7 a
Surface Location
56.694833, 2.351329
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
CHRYSAOR PETROLEUM COMPANY U.K. LIMITED
Original Operator
--
Sub Area Operator
CHRYSAOR PETROLEUM COMPANY U.K. LIMITED
Licence No
P32
Licence Type
Production
Spud Date
1984-11-06
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

30/07a- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Gas and Oil Well
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
27.432
Ground Elev (m)
--
Water Depth (m)
70.10
TD MD (m)
3350.670
TD TVDSS (m)
3322.960
TD Datum Depth (m)
27.432
TD Datum Type
Kelly Bushing
Spud Date
1984-11-06
TD Reached
1984-12-26
Completion Date
1984-12-27
Release Date
1988-12-27
30/07a- 4A Sidetrack A parent: 30/07a- 4
Abandoned Phase 3 Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
27.430
Ground Elev (m)
--
Water Depth (m)
71.02
TD MD (m)
4114.600
TD TVDSS (m)
4087.000
TD Datum Depth (m)
27.432
TD Datum Type
Kelly Bushing
Spud Date
1984-12-28
TD Reached
1985-04-13
Completion Date
1985-08-02
Release Date
1989-08-02

Formation Tops (22)

Wellbore Formation Era MD (m) TVDSS (m) Provider
30/07a- 4 Stronsay Cenozoic 2576.000 2548.426 Lloyds Register
Moray Mesozoic 2754.000 2726.402 Lloyds Register
Montrose Mesozoic 2821.000 2793.393 Lloyds Register
Ekofisk Mesozoic 2969.000 2941.372 Lloyds Register
Chalk Mesozoic 2969.000 2941.372 Lloyds Register
Upper Cretaceous Chalk Mesozoic 3043.000 3015.362 Lloyds Register
Cromer Knoll Mesozoic 3298.000 3270.325 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 3298.000 3270.325 Lloyds Register
Humber Mesozoic 3331.000 3303.320 Lloyds Register
Kimmeridge Clay 3331.000 3303.320 Lloyds Register
30/07a- 4A Stronsay Cenozoic 2576.000 2548.570 Lloyds Register
Horda Cenozoic 2576.000 2548.570 Lloyds Register
Balder Tuff Cenozoic 2757.000 2729.570 Lloyds Register
Balder Cenozoic 2757.000 2729.570 Lloyds Register
Moray Mesozoic 2757.000 2729.570 Lloyds Register
Sele Mesozoic 2768.000 2740.570 Lloyds Register
Montrose Mesozoic 2821.000 2793.570 Lloyds Register
Lista Mesozoic 2821.000 2793.570 Lloyds Register
Balmoral Sandstone Cenozoic 2839.000 2811.570 Lloyds Register
Maureen Mesozoic 2907.000 2879.570 Lloyds Register
Ekofisk Mesozoic 2969.000 2941.570 Lloyds Register
Chalk Mesozoic 2969.000 2941.570 Lloyds Register

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
30/07a- 4 6 4 0 11 10 5 0 1 0 View
30/07a- 4A 4 6 2 16 12 6 0 1 9 View

Hydrocarbon Occurrence (16)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
30/07a- 4 Oil shows OS Maureen Formation 2849.2704000000003 -- 101 m thick
30/07a- 4 Oil shows OS Ekofisk Formation 2969.3616 -- 74 m thick
30/07a- 4 Oil shows OS VALH 3297.936 -- 34 m thick
30/07a- 4A DST DST 9 -- 2839.8 2862.1 Label / Balmoral
30/07a- 4A Gas CWG Ekofisk Formation 2969.3616 -- 70 m thick
30/07a- 4A DST DST 8 -- 2973.9 2992.5 Not used for labelling, multiple DSTs in same play / Upper Cretaceous
30/07a- 4A DST DST 7A -- 3043.1 3073.3 Label / Upper Cretaceous
30/07a- 4A DST DST 6 -- 3097.1 3105.3 Not used for labelling, multiple DSTs in same play / Upper Cretaceous
30/07a- 4A Oil shows OS Hod Formation [Norwegian Classification - reserved for possible future use] 3222.9552000000003 -- 87 m thick
30/07a- 4A DST DST 5A -- 3267.5 3285.7 Not used for labelling, multiple DSTs in same play / Upper Cretaceous
30/07a- 4A Oil shows OS HGJ4 3335.7312 -- 51 m thick
30/07a- 4A DST DST 4A -- 3401.3 3401.6 Label / Upper Jurassic
30/07a- 4A DST DST 3 -- 3426.0 3454.6 Not used for labelling, multiple DSTs in same play / Upper Jurassic
30/07a- 4A Mixed shows OGS HGJ1 3469.5384000000004 -- 108 m thick
30/07a- 4A DST DST 2 -- 3471.4 3503.4 Not used for labelling, multiple DSTs in same play / Upper Jurassic
30/07a- 4A DST DST 1 -- 3511.0 3514.3 Not used for labelling, multiple DSTs in same play / Upper Jurassic

Rock Samples (2)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
30/07a- 4 Cuttings 871.73 2901.7 -- -- .
30/07a- 4A Cuttings 871.73 4114.8 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
30/07a- 4 90.6780014038086 1688.8968505859375 5 0 2026-08-06 13:45:49.900063+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
30/07a- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
caliper CALI CGG Digital Well Logs 859.0788 1672.7424 5340
comp_sonic DT CGG Digital Well Logs 860.1456000000001 1678.2288 5369
deep_resistivity ILD CGG Digital Well Logs 861.3648000000001 1688.2872 5427
gamma_ray GR CGG Digital Well Logs 90.67800000000001 1681.1244000000002 10437
med_resistivity ILM CGG Digital Well Logs 861.2124 1688.8968 5432

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
30/07a- 4 43 3350.666 3322.983 D:\BigSpatial\nsta_raw\CGG_Deviation\30-7a-4 10237bk_CGG-Deviation.xlsx
30/07a- 4A 0 -- -- --

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