Well Data Manager / Well Summary / 9/12b- 4

9/12b- 4

Decommissioned

Well Header

Well No
9/12b- 4
NSTA DEN No
1899
Well Name
--
Drill Seq No
4
Quadrant / Block
9 / 12 b
Surface Location
59.589949, 1.275324
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
CHRYSAOR PRODUCTION (U.K.) LIMITED
Original Operator
--
Sub Area Operator
CHRYSAOR PRODUCTION (U.K.) LIMITED
Licence No
P336
Licence Type
Production
Spud Date
1982-04-15
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

9/12b- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.603
Ground Elev (m)
--
Water Depth (m)
102.11
TD MD (m)
1828.800
TD TVDSS (m)
1801.150
TD Datum Depth (m)
25.603
TD Datum Type
Kelly Bushing
Spud Date
1982-04-15
TD Reached
1982-05-08
Completion Date
1982-05-13
Release Date
1986-05-13

Formation Tops (3)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/12b- 4 Upper Dornoch Sst 1138.000 1112.042 Ternan
Maureen Sst Mesozoic 1624.000 1597.295 Ternan
Old Red Sandstone 1747.000 1719.954 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
9/12b- 4 0 0 0 11 3 0 0 1 0 View

Hydrocarbon Occurrence (5)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
9/12b- 4 Oil shows OS PLTF 1087.2216 -- 51 m thick
9/12b- 4 Oil shows OS PALU 1138.428 -- 50 m thick
9/12b- 4 Oil shows OS PALU 1188.72 -- 188 m thick
9/12b- 4 Mixed shows OGS LPCL 1376.7816 -- 247 m thick
9/12b- 4 Mixed shows OGS BSMO 1623.6696000000002 -- 122 m thick

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
9/12b- 4 Cuttings 445.01 1828.8 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
9/12b- 4 409.95599365234375 1829.56201171875 14 0 2026-08-06 20:46:43.743623+00 View Log

Source LAS Manifest (Best Curve per Type)

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9/12b- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
apparent_water_resistivity RWA Energective CorrectedLOGS 429.61560000000003 1816.4556 2493
bulk_density DENS LR Petrophysical Devonian/ESP 914.0952 1827.8856 5997
bulk_density CDEN Energective CorrectedLOGS 913.1808000000001 1829.5620000000001 6014
caliper CALI LR Petrophysical Devonian/ESP 911.352 1827.8856 6015
caliper CLD Energective CorrectedLOGS 913.1808000000001 1829.2572 6012
comp_sonic DT OGA Batch Unzipped 410.5656 1818.4368000000002 9168
comp_sonic DTC Energective CorrectedLOGS 430.22520000000003 1818.7416 9112
deep_resistivity RDEP LR Petrophysical Devonian/ESP 429.768 1826.3616 9162
deep_resistivity ILD Energective CorrectedLOGS 429.61560000000003 1828.9524000000001 9183
deep_resistivity RES_DEP OGA Batch Unzipped 410.5656 1828.8000000000002 9300
deep_resistivity LLD Energective CorrectedLOGS 1004.7732000000001 1742.2368000000001 2017
density_correction DENC UKCS JDWL 30th Round 914.0952000000001 1827.8856 5997
density_correction CDRH Energective CorrectedLOGS 923.5440000000001 1829.5620000000001 5946
gamma_ray GR LR Petrophysical Devonian/ESP 410.1084 1821.18 9259
gamma_ray GRI Energective CorrectedLOGS 409.956 1821.7896 9265
med_resistivity RMED UKCS JDWL 30th Round 429.76800000000003 1826.3616000000002 9162
med_resistivity ILM Energective CorrectedLOGS 429.61560000000003 1828.9524000000001 9183
med_resistivity RES_MED OGA Batch Unzipped 410.5656 1828.8000000000002 9302
micro_resistivity MSF Energective CorrectedLOGS 1004.9256 1742.3892 2018
micro_resistivity RMIC UKCS JDWL 30th Round 1004.9256 1744.98 2100
micro_resistivity RES_MIC OGA Batch Unzipped 1005.5352 1745.5896 1673
neutron_por CNEU Energective CorrectedLOGS 899.4648000000001 1828.038 6094
neutron_por NEUT LR Petrophysical Devonian/ESP 914.0952 1827.8856 5997
porosity POR Energective CorrectedLOGS 429.61560000000003 1821.7896 9136
shallow_resistivity RES_SLW OGA Batch Unzipped 410.5656 1828.8000000000002 9302
shallow_resistivity RSHAL UKCS JDWL 30th Round 429.76800000000003 1826.3616000000002 9162
shallow_resistivity LLS Energective CorrectedLOGS 1004.7732000000001 1742.2368000000001 2017
shallow_resistivity SFL Energective CorrectedLOGS 429.61560000000003 1828.9524000000001 9183
sp SP Energective CorrectedLOGS 429.61560000000003 1828.9524000000001 9183
tvdss SS Energective CorrectedLOGS 304.8 2133.9048000000003 12003
vshale VSGR Energective CorrectedLOGS 413.6136 1821.7896 9241
vshale VSH Energective CorrectedLOGS 413.6136 1821.7896 9241
water_sat SW Energective CorrectedLOGS 429.61560000000003 1821.7896 9136
water_sat_xo SXO Energective CorrectedLOGS 429.61560000000003 1821.7896 9136

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/12b- 4 51 1828.800 1801.154 G:\NSTA_BigFiles\NSTA_Packages\UKCS_JDWL_30thRound\NNS\OGA_Additional_Deviation_NNS.xlsx
9/12b- 4 51 1828.800 1801.445 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_12b- 4\WELL_PATH\WDD_QC\9_12b-_4_wdd_WDD_FILE_1690271_DATACO_MAPPED.csv

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