Well Data Manager / Well Summary / 3/12b- 4

3/12b- 4

Decommissioned

Well Header

Well No
3/12b- 4
NSTA DEN No
4679
Well Name
--
Drill Seq No
4
Quadrant / Block
3 / 12 b
Surface Location
60.612957, 1.267631
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED
Original Operator
--
Sub Area Operator
NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED
Licence No
P619
Licence Type
Production
Spud Date
1992-02-04
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

3/12b- 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)
25.908
Ground Elev (m)
--
Water Depth (m)
133.81
TD MD (m)
1449.934
TD TVDSS (m)
0.000
TD Datum Depth (m)
25.908
TD Datum Type
Kelly Bushing
Spud Date
1992-02-04
TD Reached
1992-02-29
Completion Date
1992-02-29
Release Date
1996-02-29
3/12b- 4Z Sidetrack Z parent: 3/12b- 4
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
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
25.908
Ground Elev (m)
--
Water Depth (m)
133.81
TD MD (m)
3094.330
TD TVDSS (m)
--
TD Datum Depth (m)
25.908
TD Datum Type
Kelly Bushing
Spud Date
1992-02-29
TD Reached
1992-04-20
Completion Date
1992-04-27
Release Date
1996-04-27

Formation Tops (4)

Wellbore Formation Era MD (m) TVDSS (m) Provider
3/12b- 4 Upper Dornoch Sst 1339.000 1312.913 Ternan
Chalk Mesozoic 2068.000 1558.692 Ternan
Cormorant Mesozoic 3003.000 1558.692 Ternan
3/12b- 4Z Shetland Mesozoic 1878.000 1851.741 Ternan

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
3/12b- 4 0 0 0 18 3 0 0 1 0 View
3/12b- 4Z 0 0 0 0 1 0 1 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (31)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
3/12b- 4 Cuttings 1161.29 1584.96 -- -- .
3/12b- 4Z Cuttings 1246.63 3102.86 -- -- .
3/12b- 4Z Core #1 3112.01 3120.51 φ 4.4% (n=28) · Kh 0.0 mD (n=28) · Kv 0.0 mD (n=4) · Density 2.67 (n=28) · GEOCHEM GROUP LIMITED SST BU F CALC CMT; SST DK GY F CALC CMT; SST GY F CAL CMT R PBL; SST GY F CALC CMT; SST GY F CALC CMT LGE PBL/CLST; SST GY F CALC CMT R PBL?; SST GY F FNT LAM BIOT? SL CALC; SST GY F R W CMTD VN CALC CMT; SST GY/BRN VF-F R PBL CALC CMT; SST LT GY/GY F LOC CALC CMT; SST RD/BRN F CALC CMT; SST RD/BRN F OCC PBL CALC CMT; SST RD/BRN F SL CALC; SST RD/GY F CALC CMT; SST RD/GY F SL CALC came in as 3/12b- 4S1
3/12b- 4Z ↳ Plug 01 3112.191 -- φ 3.9% · Kh 0.1 mD · Kv 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST GY/BRN VF-F R PBL CALC CMT --
3/12b- 4Z ↳ Plug 02 3112.313 -- φ 5.1% · Kh 0.1 mD · Density 2.68 · GEOCHEM GROUP LIMITED SST RD/BRN F OCC PBL CALC CMT --
3/12b- 4Z ↳ Plug 03 3112.618 -- φ 5.0% · Kh 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST RD/BRN F CALC CMT --
3/12b- 4Z ↳ Plug 04 3112.922 -- φ 4.3% · Kh 0.1 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST RD/BRN F CALC CMT --
3/12b- 4Z ↳ Plug 05 3113.227 -- φ 5.4% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST RD/BRN F CALC CMT --
3/12b- 4Z ↳ Plug 06 3113.532 -- φ 3.1% · Kh 0.0 mD · Density 2.68 · GEOCHEM GROUP LIMITED SST LT GY/GY F LOC CALC CMT --
3/12b- 4Z ↳ Plug 07 3113.837 -- φ 3.8% · Kh 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST DK GY F CALC CMT --
3/12b- 4Z ↳ Plug 08 3114.142 -- φ 5.1% · Kh 0.0 mD · Density 2.69 · GEOCHEM GROUP LIMITED SST RD/BRN F SL CALC --
3/12b- 4Z ↳ Plug 09 3114.446 -- φ 4.1% · Kh 0.1 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST RD/BRN F CALC CMT --
3/12b- 4Z ↳ Plug 10 3114.751 -- φ 3.5% · Kh 0.1 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F FNT LAM BIOT? SL CALC --
3/12b- 4Z ↳ Plug 11 3115.056 -- φ 3.9% · Kh 0.1 mD · Kv 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST GY F R W CMTD VN CALC CMT --
3/12b- 4Z ↳ Plug 12 3115.361 -- φ 4.3% · Kh 0.1 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST RD/GY F CALC CMT --
3/12b- 4Z ↳ Plug 13 3115.666 -- φ 6.6% · Kh 0.1 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST RD/GY F CALC CMT --
3/12b- 4Z ↳ Plug 14 3115.97 -- φ 7.4% · Kh 0.1 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST RD/GY F SL CALC --
3/12b- 4Z ↳ Plug 15 3116.275 -- φ 3.9% · Kh 0.0 mD · Density 2.65 · GEOCHEM GROUP LIMITED SST BU F CALC CMT --
3/12b- 4Z ↳ Plug 16 3116.61 -- φ 4.6% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST BU F CALC CMT --
3/12b- 4Z ↳ Plug 17 3116.885 -- φ 4.2% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 18 3117.19 -- φ 5.0% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 19 3117.494 -- φ 3.3% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 20 3117.799 -- φ 5.5% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 21 3118.104 -- φ 4.4% · Kh 0.0 mD · Kv 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 22 3118.409 -- φ 3.3% · Kh 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST GY F CALC CMT LGE PBL/CLST --
3/12b- 4Z ↳ Plug 23 3118.714 -- φ 5.0% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 24 3119.018 -- φ 4.6% · Kh 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CAL CMT R PBL --
3/12b- 4Z ↳ Plug 25 3119.323 -- φ 2.4% · Kh 0.0 mD · Density 2.68 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 26 3119.598 -- φ 3.4% · Kh 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST GY F CALC CMT --
3/12b- 4Z ↳ Plug 27 3120.024 -- φ 3.3% · Kh 0.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED SST GY F CALC CMT R PBL? --
3/12b- 4Z ↳ Plug 28 3120.177 -- φ 3.5% · Kh 0.0 mD · Kv 0.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED SST GY F CALC CMT R PBL? --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
3/12b- 4 1585.1124267578125 3104.84521484375 1 0 2026-08-06 13:17:23.058346+00 View Log
3/12b- 4Z 130.302001953125 3103.1689453125 9 0 2026-08-06 18:21:58.452433+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
3/12b- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
gamma_ray GRLW Energective CorrectedLOGS 1585.1124 3104.8452 9963
tvdss SS Energective CorrectedLOGS 1584.96 3104.9976 9975
3/12b- 4Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN CGG Digital Well Logs 908.9136000000001 3101.1876 14225
caliper CAL CGG Digital Well Logs 908.9136000000001 3103.1688000000004 14392
comp_sonic AC CGG Digital Well Logs 909.3708 3097.0728000000004 14345
deep_resistivity RD CGG Digital Well Logs 1571.7012 3088.5384000000004 9954
density_correction CORR CGG Digital Well Logs 909.8280000000001 3101.1876 14205
gamma_ray GRD CGG Digital Well Logs 130.302 3096.6156 19465
gamma_ray GR CGG Digital Well Logs 2852.166 3092.1960000000004 1576
micro_resistivity RMLL CGG Digital Well Logs 1571.3964 3103.0164 10051
neutron_por CNC CGG Digital Well Logs 909.066 3097.9872 14231
shallow_resistivity RS CGG Digital Well Logs 1571.5488 3088.5384000000004 9955

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
3/12b- 4 60 1584.960 1558.692 D:\BigSpatial\nsta_raw\CGG_Deviation\3-12b-4 15594r_CGG-Deviation.xlsx
3/12b- 4Z 79 3120.238 3093.012 D:\BigSpatial\nsta_raw\CGG_Deviation\3-12b-4Z 15931cl_CGG-Deviation.xlsx

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