Well Data Manager / Well Summary / 15/11a- 4

15/11a- 4

Decommissioned

Well Header

Well No
15/11a- 4
NSTA DEN No
4250
Well Name
--
Drill Seq No
4
Quadrant / Block
15 / 11 a
Surface Location
58.591242, 0.125792
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Original Operator
--
Sub Area Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Licence No
P250
Licence Type
Production
Spud Date
1990-11-18
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

15/11a- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
E
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
142.04
TD MD (m)
2865.120
TD TVDSS (m)
2838.044
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
1990-11-18
TD Reached
1990-11-19
Completion Date
1991-01-07
Release Date
1995-01-07

Formation Tops (28)

Wellbore Formation Era MD (m) TVDSS (m) Provider
15/11a- 4 Upper Mousa Cenozoic 531.000 505.492 Lloyds Register
Stronsay Cenozoic 531.000 505.492 Lloyds Register
Middle Mousa 722.000 696.303 Lloyds Register
Horda Cenozoic 836.000 810.122 Lloyds Register
Balder Tuff Cenozoic 855.000 829.094 Lloyds Register
Balder Cenozoic 855.000 829.094 Lloyds Register
Moray Mesozoic 855.000 829.094 Lloyds Register
Beauly Cenozoic 908.000 882.021 Lloyds Register
Dornoch Mesozoic 1022.000 995.884 Lloyds Register
Lower Dornoch Sandstone Cenozoic 1262.000 1235.690 Lloyds Register
Sele Mesozoic 1262.000 1235.690 Lloyds Register
Balmoral Sandstone Cenozoic 1347.000 1320.635 Lloyds Register
Lista Mesozoic 1347.000 1320.635 Lloyds Register
Montrose Mesozoic 1347.000 1320.635 Lloyds Register
Glamis Tuff 1493.000 1466.546 Lloyds Register
Andrew Sandstone Cenozoic 1499.000 1472.543 Lloyds Register
Maureen Mesozoic 1956.000 1929.240 Lloyds Register
Ekofisk Mesozoic 2033.000 2006.163 Lloyds Register
Chalk Mesozoic 2033.000 2006.163 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2053.000 2026.145 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 2327.000 2299.987 Lloyds Register
Cromer Knoll Mesozoic 2327.000 2299.987 Lloyds Register
Kimmeridge Clay 2493.000 2465.961 Lloyds Register
Humber Mesozoic 2493.000 2465.961 Lloyds Register
Piper Mesozoic 2644.000 2616.955 Lloyds Register
Sgiath Mesozoic 2723.000 2695.948 Lloyds Register
Fladen Mesozoic 2780.000 2752.939 Lloyds Register
Pentland Mesozoic 2780.000 2752.939 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
15/11a- 4 7 16 5 36 28 3 0 1 0 View

Hydrocarbon Occurrence (4)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
15/11a- 4 Gas shows GS Horda Formation 425.8056 -- 66 m thick
15/11a- 4 Gas shows GS Sele Formation 1070.7624 -- 191 m thick
15/11a- 4 Gas shows GS Kimmeridge Clay (Skye) 2493.264 -- 95 m thick
15/11a- 4 Gas shows GS Pibroch Sandstone Member 2723.388 -- 57 m thick

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
15/11a- 4 Cuttings 374.9 2866.95 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
15/11a- 4 187.45199584960938 2850.032470703125 15 0 2026-08-06 16:49:22.05571+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
15/11a- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
apparent_water_resistivity RWA Energective CorrectedLOGS 369.7224 2842.1076000000003 6573
bulk_density DEN OGA Batch Unzipped 1631.8992 2850.0324 7994
bulk_density ZDEN CGG Digital Well Logs 1631.442 2852.9280000000003 7942
bulk_density LDL Energective CorrectedLOGS 1631.8992 2850.0324 7994
cable_tension TNS Energective CorrectedLOGS 1623.5172 2851.0992 8056
caliper CAL CGG Digital Well Logs 358.44480000000004 2852.9280000000003 16282
caliper CALI CGG Digital Well Logs 1631.442 2852.9280000000003 7941
caliper CLD Energective CorrectedLOGS 359.35920000000004 2849.5752 16262
comp_sonic AC CGG Digital Well Logs 358.14000000000004 2845.1556 16285
comp_sonic DT OGA Batch Unzipped 359.51160000000004 2846.5272 16320
comp_sonic DTC Energective CorrectedLOGS 372.618 2846.5272 16234
deep_resistivity ILD Energective CorrectedLOGS 359.81640000000004 2829.0012 16078
deep_resistivity RD CGG Digital Well Logs 1631.8992 2839.0596 7922
deep_resistivity RESD CGG Digital Well Logs 359.20680000000004 2839.0596 16258
deep_resistivity RILD CGG Digital Well Logs 359.20680000000004 1629.6132 8337
density_correction ZCOR CGG Digital Well Logs 1631.442 2852.9280000000003 7941
density_correction DENC OGA Batch Unzipped 1631.8992 2850.0324 7994
density_correction DRH Energective CorrectedLOGS 1631.8992 2850.0324 7994
gamma_ray GRD CGG Digital Well Logs 1614.3732 2845.7652000000003 8006
gamma_ray GRI Energective CorrectedLOGS 187.452 2842.1076000000003 17420
gamma_ray GR CGG Digital Well Logs 164.4396 2845.7652000000003 17595
med_resistivity RILM CGG Digital Well Logs 358.90200000000004 1632.5088 8358
med_resistivity ILM Energective CorrectedLOGS 377.4948 1627.4796000000001 8203
med_resistivity RESM CGG Digital Well Logs 358.90200000000004 2837.8404 16267
med_resistivity RES_MED OGA Batch Unzipped 359.81640000000004 1627.4796000000001 8319
micro_resistivity RES_MIC OGA Batch Unzipped 1631.8992 2849.88 7993
micro_resistivity RMLL CGG Digital Well Logs 1631.2896 2850.1848 7999
micro_resistivity MLL Energective CorrectedLOGS 1631.8992 2849.88 7993
neutron_por CN OGA Batch Unzipped 1624.2792000000002 2849.7276 8042
neutron_por NEU OGA Batch Unzipped 1624.2792000000002 2849.7276 8042
neutron_por CNLC Energective CorrectedLOGS 1624.2792000000002 2849.7276 8042
neutron_por CNC CGG Digital Well Logs 1631.442 2848.5084 7913
pef PEF Energective CorrectedLOGS 1631.8992 2850.0324 7994
pef PE CGG Digital Well Logs 1631.442 2852.9280000000003 7936
porosity POR Energective CorrectedLOGS 359.81640000000004 2842.1076000000003 16261
shallow_resistivity RES_SLW OGA Batch Unzipped 1631.8992 2836.164 7903
shallow_resistivity RS CGG Digital Well Logs 1631.2896 2837.8404 7918
shallow_resistivity SFL Energective CorrectedLOGS 1631.8992 2836.164 7903
shallow_resistivity RFOC CGG Digital Well Logs 358.44480000000004 1634.3376 8373
sp SP Energective CorrectedLOGS 362.10240000000005 2828.2392 16183
tvdss SS Energective CorrectedLOGS 187.452 2851.404 17481
vshale VSGR Energective CorrectedLOGS 216.10320000000002 2842.1076000000003 17232
vshale VSH Energective CorrectedLOGS 216.10320000000002 2842.1076000000003 17232
water_sat SW Energective CorrectedLOGS 359.81640000000004 2842.1076000000003 16261
water_sat_xo SXO Energective CorrectedLOGS 359.81640000000004 2842.1076000000003 16261

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
15/11a- 4 91 2865.120 2838.044 D:\BigSpatial\nsta_raw\CGG_Deviation\15-11a-4 12021ap_CGG-Deviation.xlsx

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