9/23b- 26

Decommissioned

Well Header

Well No
9/23b- 26
NSTA DEN No
4432
Well Name
--
Drill Seq No
26
Quadrant / Block
9 / 23 b
Surface Location
59.295391, 1.518228
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
TAQA BRATANI LIMITED
Original Operator
--
Sub Area Operator
TAQA BRATANI LIMITED
Licence No
P478
Licence Type
Production
Spud Date
1991-07-27
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (4)

9/23b- 26 Original
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
EE
Well Seq
WB1
Datum Type
Rotary Table
Datum Elev (m)
25.878
Ground Elev (m)
--
Water Depth (m)
110.95
TD MD (m)
2010.025
TD TVDSS (m)
1836.567
TD Datum Depth (m)
25.900
TD Datum Type
Kelly Bushing
Spud Date
1991-07-27
TD Reached
1991-08-05
Completion Date
1991-09-27
Release Date
1995-09-27
9/23b- 26X Sidetrack X parent: 9/23b- 26Y
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Gas and Oil Well
Dev Type
--
Convention
--
Primary Target
EE
Well Seq
WB4
Datum Type
Rotary Table
Datum Elev (m)
25.878
Ground Elev (m)
--
Water Depth (m)
110.95
TD MD (m)
2346.989
TD TVDSS (m)
1739.054
TD Datum Depth (m)
25.900
TD Datum Type
Kelly Bushing
Spud Date
1991-08-19
TD Reached
1991-08-26
Completion Date
1991-09-27
Release Date
1995-09-27
9/23b- 26Y Sidetrack Y parent: 9/23b- 26Z
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Gas and Oil Well
Dev Type
--
Convention
--
Primary Target
EE
Well Seq
WB3
Datum Type
Rotary Table
Datum Elev (m)
25.878
Ground Elev (m)
--
Water Depth (m)
110.95
TD MD (m)
1971.025
TD TVDSS (m)
1742.090
TD Datum Depth (m)
25.900
TD Datum Type
Kelly Bushing
Spud Date
1991-08-16
TD Reached
1991-08-18
Completion Date
1991-09-27
Release Date
1995-09-27
9/23b- 26Z Sidetrack Z parent: 9/23b- 26
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Gas and Oil Well
Dev Type
--
Convention
--
Primary Target
EE
Well Seq
WB2
Datum Type
Rotary Table
Datum Elev (m)
25.878
Ground Elev (m)
--
Water Depth (m)
110.95
TD MD (m)
1935.025
TD TVDSS (m)
1782.983
TD Datum Depth (m)
25.900
TD Datum Type
Kelly Bushing
Spud Date
1991-08-11
TD Reached
1991-08-15
Completion Date
1991-09-27
Release Date
1995-09-27

Formation Tops (26)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/23b- 26 Frigg Sst 491.000 328.299 Ternan
Odin Sst Cenozoic 521.000 358.298 Ternan
Odin Sst Cenozoic 521.000 358.298 Ternan
Hermod Sst 607.000 444.296 Ternan
9/23b- 26X Unknown 137.000 -25.678 BGS LithoStrat Upper
Frigg Formation 1629.000 1444.916 BGS LithoStrat Upper
Balder Shale Unit Palaeozoic 1693.000 1490.354 BGS LithoStrat Upper
Upper Sandy Subunit 1694.000 1491.040 BGS LithoStrat Upper
Massive Sand Subunit 1742.000 1523.315 BGS LithoStrat Upper
9/23b- 26Y Unknown 137.000 -25.678 BGS LithoStrat Upper
Unknown 211.000 48.322 BGS LithoStrat Upper
Unknown 1602.000 1423.595 BGS LithoStrat Upper
Frigg Formation 1629.000 1444.916 BGS LithoStrat Upper
Balder Shale Unit Palaeozoic 1693.000 1490.354 BGS LithoStrat Upper
Upper Sandy Subunit 1694.000 1491.040 BGS LithoStrat Upper
Massive Sand Subunit 1742.000 1523.319 BGS LithoStrat Upper
Massive Sand Subunit 1753.000 1530.578 BGS LithoStrat Upper
9/23b- 26Z Unknown 137.000 -25.678 BGS LithoStrat Upper
Unknown 211.000 48.322 BGS LithoStrat Upper
Unknown 1290.000 1127.232 BGS LithoStrat Upper
Unknown 1602.000 1423.563 BGS LithoStrat Upper
Frigg Formation 1629.000 1444.826 BGS LithoStrat Upper
Balder Shale Unit Palaeozoic 1693.000 1490.040 BGS LithoStrat Upper
Upper Sandy Subunit 1694.000 1490.723 BGS LithoStrat Upper
Massive Sand Subunit 1742.000 1522.914 BGS LithoStrat Upper
Balder Shale Unit Palaeozoic 1896.000 1620.632 BGS LithoStrat Upper

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
9/23b- 26 0 0 0 10 4 0 0 0 0 View
9/23b- 26X 0 0 0 5 5 0 0 0 0 View
9/23b- 26Y 0 0 0 8 8 0 0 0 0 View
9/23b- 26Z 0 0 0 9 9 0 0 0 0 View

Hydrocarbon Occurrence (9)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
9/23b- 26 Oil shows OS Frigg Sandstone Member 490.81944 -- 18 m thick
9/23b- 26 Oil shows OS BDSH 509.29032000000007 -- 1 m thick
9/23b- 26 Oil shows OS BUSS 509.83896000000004 -- 11 m thick
9/23b- 26 Oil shows OS BAMS 520.5374400000001 -- 41 m thick
9/23b- 26Z Oil shows OS * 1601.699616 -- 27 m thick
9/23b- 26Z Oil shows OS Frigg Sandstone Member 1628.50068 -- 64 m thick
9/23b- 26Z Oil shows OS BDSH 1692.9994080000001 -- 1 m thick
9/23b- 26Z Oil shows OS BUSS 1693.999152 -- 48 m thick
9/23b- 26Z Oil shows OS BAMS 1741.999056 -- 154 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
9/23b- 26 88.39199829101562 2006.041259765625 9 0 2026-08-06 16:10:19.881897+00 View Log
9/23b- 26X 88.2396011352539 2329.43408203125 6 0 2026-08-06 16:10:22.428193+00 View Log
9/23b- 26Y 88.6968002319336 1951.939208984375 7 0 2026-08-06 16:10:24.02249+00 View Log
9/23b- 26Z 88.6968002319336 1933.8035888671875 9 0 2026-08-06 16:10:25.917356+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
9/23b- 26
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 762.32692848 1987.7753284800003 8042
bulk_density CDEN Energective CorrectedLOGS 761.0856 1990.344 8067
caliper CALI OGA Batch Unzipped 762.32692848 1987.7753284800003 8042
caliper CLD Energective CorrectedLOGS 760.1712 1988.8200000000002 8063
comp_sonic DTC Energective CorrectedLOGS 760.0188 1999.7928000000002 8136
deep_resistivity ILD Energective CorrectedLOGS 760.7808 2006.0412000000001 8172
deep_resistivity RES_DEP OGA Batch Unzipped 762.32692848 2003.7773284800003 8147
density_correction CDRH Energective CorrectedLOGS 760.476 1998.726 8126
gamma_ray GR OGA Batch Unzipped 85.06132848000001 2001.7961284800003 12578
gamma_ray GRI Energective CorrectedLOGS 88.39200000000001 2001.6216000000002 12555
gamma_ray GRLW Energective CorrectedLOGS 1264.6152 1989.8868 4760
med_resistivity ILM Energective CorrectedLOGS 760.0188 2006.0412000000001 8177
med_resistivity RES_MED OGA Batch Unzipped 762.32692848 2003.7773284800003 8147
neutron_por NEU OGA Batch Unzipped 762.32692848 1987.7753284800003 8042
neutron_por CNLC Energective CorrectedLOGS 767.7912 1998.726 8078
pef CPEF Energective CorrectedLOGS 768.096 1998.726 8076
tvdss SS Energective CorrectedLOGS 88.39200000000001 2006.1936 12585
9/23b- 26X
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 762.2179929600001 2325.68959296 8657
bulk_density CDEN Energective CorrectedLOGS 762.3048 2325.4716000000003 8655
caliper CLD Energective CorrectedLOGS 762.3048 2325.4716000000003 8655
caliper CALI OGA Batch Unzipped 762.2179929600001 2325.68959296 8657
deep_resistivity ILD Energective CorrectedLOGS 762.3048 2323.4904 9821
deep_resistivity RES_DEP OGA Batch Unzipped 762.2179929600001 2323.70839296 9823
gamma_ray GRI Energective CorrectedLOGS 88.23960000000001 2329.434 14690
gamma_ray GR OGA Batch Unzipped 84.95239296 2329.65199296 14713
med_resistivity RES_MED OGA Batch Unzipped 762.2179929600001 1759.67599296 6546
med_resistivity ILM Energective CorrectedLOGS 762.3048 1759.458 6544
neutron_por CNEU Energective CorrectedLOGS 767.1816 2324.4048000000003 10207
neutron_por NEU OGA Batch Unzipped 762.2179929600001 2324.62279296 10241
tvdss SS Energective CorrectedLOGS 88.08720000000001 2329.5864 14709
9/23b- 26Y
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density CDEN Energective CorrectedLOGS 762.0 1759.7628000000002 6548
bulk_density DEN OGA Batch Unzipped 762.0427939200001 1759.80559392 6548
caliper CALI OGA Batch Unzipped 762.0427939200001 1759.80559392 6548
caliper CLD Energective CorrectedLOGS 762.0 1759.7628000000002 6548
comp_sonic DTC Energective CorrectedLOGS 762.0 1759.9152000000001 6549
deep_resistivity RES_DEP OGA Batch Unzipped 762.0427939200001 1759.80559392 6548
deep_resistivity ILD Energective CorrectedLOGS 762.0 1759.7628000000002 6548
gamma_ray GR OGA Batch Unzipped 84.92959392 1951.8295939200002 12251
gamma_ray GRI Energective CorrectedLOGS 88.69680000000001 1951.9392 12227
med_resistivity ILM Energective CorrectedLOGS 762.0 1759.7628000000002 6548
med_resistivity RES_MED OGA Batch Unzipped 762.0427939200001 1759.80559392 6548
neutron_por CNEU Energective CorrectedLOGS 767.6388000000001 1947.9768000000001 7746
neutron_por NEU OGA Batch Unzipped 761.8903939200001 1948.0195939200003 7784
tvdss SS Energective CorrectedLOGS 88.39200000000001 1951.9392 12229
9/23b- 26Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density CDEN Energective CorrectedLOGS 762.1524000000001 1912.7724 7551
bulk_density DEN OGA Batch Unzipped 762.1524000000001 1912.7724 7551
caliper CLD Energective CorrectedLOGS 762.1524000000001 1912.7724 7551
caliper CALI OGA Batch Unzipped 762.1524000000001 1912.7724 7551
comp_sonic DTC Energective CorrectedLOGS 1103.0712 1925.7264 5399
deep_resistivity ILD Energective CorrectedLOGS 762.1524000000001 1933.8036000000002 7689
deep_resistivity RES_DEP OGA Batch Unzipped 762.1524000000001 1933.8036000000002 7689
density_correction CDRH Energective CorrectedLOGS 1094.8416 1918.2588 5404
gamma_ray GR OGA Batch Unzipped 85.03920000000001 1919.7828000000002 12040
gamma_ray GRI Energective CorrectedLOGS 88.69680000000001 1919.7828000000002 12016
med_resistivity ILM Energective CorrectedLOGS 762.1524000000001 1933.8036000000002 7689
med_resistivity RES_MED OGA Batch Unzipped 762.1524000000001 1933.8036000000002 7689
neutron_por CNEU Energective CorrectedLOGS 767.3340000000001 1912.7724 7517
neutron_por NEU OGA Batch Unzipped 762.1524000000001 1912.7724 7551
pef CPEF Energective CorrectedLOGS 1094.8416 1917.9540000000002 5402
tvdss SS Energective CorrectedLOGS 88.39200000000001 1933.9560000000001 12111

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/23b- 26 238 2010.000 1699.729 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b- 26\WELL_PATH\WDD_QC\9_23b-_26_wdd_WDD_FILE_1681831_DATACO_MAPPED.csv
9/23b- 26X 282 2346.900 1603.319 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b- 26X\WELL_PATH\WDD_QC\9_23b-_26X_wdd_WDD_FILE_1681832_DATACO_MAPPED.csv
9/23b- 26Y 233 1971.000 1605.264 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b- 26Y\WELL_PATH\WDD_QC\9_23b-_26Y_wdd_WDD_FILE_1681833_DATACO_MAPPED.csv
9/23b- 26Z 228 1935.000 1646.148 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b- 26Z\WELL_PATH\WDD_QC\9_23b-_26Z_wdd_WDD_FILE_1681834_DATACO_MAPPED.csv

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