Well Data Manager / Well Summary / 9/23b-A18

9/23b-A18

Present

Well Header

Well No
9/23b-A18
NSTA DEN No
6553
Well Name
--
Drill Seq No
18
Quadrant / Block
9 / 23 b
Surface Location
59.278864, 1.514981
Source Datum
ED50
Subsea Well
Unknown
Platform
A
Slot No
2
Operator
TAQA BRATANI LIMITED
Original Operator
--
Sub Area Operator
TAQA BRATANI LIMITED
Licence No
P478
Licence Type
Production
Spud Date
1998-11-24
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (5)

9/23b-A18 Original
Abandoned Phase 1 View Log Interpreted Data Survey
Current Intent
Development
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
PN1
Well Seq
WB1
Datum Type
Rotary Table
Datum Elev (m)
44.197
Ground Elev (m)
--
Water Depth (m)
109.73
TD MD (m)
6015.606
TD TVDSS (m)
1665.164
TD Datum Depth (m)
44.196
TD Datum Type
Kelly Bushing
Spud Date
1998-11-24
TD Reached
1999-02-03
Completion Date
1999-02-03
Release Date
2003-02-03
9/23b-A18W Sidetrack W parent: 9/23b-A18X
Plugged View Log Interpreted Data Survey
Current Intent
Development
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
PN1
Well Seq
WB5
Datum Type
Rotary Table
Datum Elev (m)
44.197
Ground Elev (m)
--
Water Depth (m)
109.73
TD MD (m)
5950.988
TD TVDSS (m)
1717.621
TD Datum Depth (m)
44.196
TD Datum Type
Rotary Table
Spud Date
2000-06-19
TD Reached
2000-08-10
Completion Date
2000-08-31
Release Date
2004-08-31
9/23b-A18X Sidetrack X parent: 9/23b-A18Y
Abandoned Phase 1 View Log Interpreted Data Survey
Current Intent
Development
Original Intent
Development
Flow Class
Dry Hole
Dev Type
Producer
Convention
--
Primary Target
PN1
Well Seq
WB4
Datum Type
Rotary Table
Datum Elev (m)
44.197
Ground Elev (m)
--
Water Depth (m)
109.73
TD MD (m)
5503.841
TD TVDSS (m)
1732.349
TD Datum Depth (m)
44.196
TD Datum Type
Kelly Bushing
Spud Date
1999-06-29
TD Reached
1999-07-02
Completion Date
1999-07-02
Release Date
2003-07-02
9/23b-A18Y Sidetrack Y parent: 9/23b-A18Z
Abandoned Phase 1 View Log Interpreted Data Survey
Current Intent
Development
Original Intent
Development
Flow Class
Oil Show
Dev Type
Producer
Convention
--
Primary Target
PN1
Well Seq
WB3
Datum Type
Rotary Table
Datum Elev (m)
44.197
Ground Elev (m)
--
Water Depth (m)
109.73
TD MD (m)
5642.526
TD TVDSS (m)
1712.293
TD Datum Depth (m)
44.196
TD Datum Type
Kelly Bushing
Spud Date
1999-05-25
TD Reached
1999-06-29
Completion Date
1999-06-29
Release Date
2003-06-29
9/23b-A18Z Sidetrack Z parent: 9/23b-A18
Abandoned Phase 1 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
PN1
Well Seq
WB2
Datum Type
Rotary Table
Datum Elev (m)
44.197
Ground Elev (m)
--
Water Depth (m)
109.73
TD MD (m)
4718.361
TD TVDSS (m)
1677.780
TD Datum Depth (m)
44.196
TD Datum Type
Kelly Bushing
Spud Date
1999-05-01
TD Reached
1999-05-17
Completion Date
1999-05-17
Release Date
2003-05-17

Formation Tops (13)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/23b-A18 Horda Formation Cenozoic 698.000 482.172 BGS LithoStrat Upper
Grid Formation 1128.000 758.710 BGS LithoStrat Upper
Upper Grid Sandstone Member Cenozoic 1397.000 841.086 BGS LithoStrat Upper
Lower Grid Sandstone Member Cenozoic 1640.000 898.043 BGS LithoStrat Upper
Horda Formation Cenozoic 2003.000 970.259 BGS LithoStrat Upper
Balder Cenozoic 4924.000 1601.577 BGS LithoStrat Upper
Frigg Formation 5584.000 1609.936 BGS LithoStrat Upper
Frigg Sand Member 5598.000 1607.252 BGS LithoStrat Upper
Frigg Formation 5921.000 1532.969 BGS LithoStrat Upper
9/23b-A18W Horda Formation Cenozoic 2285.000 1028.173 BGS LithoStrat Upper
Frigg Member Equivalent 5380.000 1563.459 BGS LithoStrat Upper
Frigg Sand Member 5492.000 1565.709 BGS LithoStrat Upper
9/23b-A18Z Horda Formation Cenozoic 2285.000 1028.252 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-A18 0 0 0 9 9 0 0 1 0 View
9/23b-A18W 0 0 0 3 3 0 0 1 0 View
9/23b-A18X 0 0 0 0 0 0 0 1 0 View
9/23b-A18Y 0 0 0 0 0 0 0 1 0 View
9/23b-A18Z 0 0 0 1 1 0 0 1 0 View

Hydrocarbon Occurrence (1)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
9/23b-A18W Oil shows OS Frigg Sandstone Member 5492.496 -- 458 m thick

Rock Samples (5)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
9/23b-A18 Cuttings 3224.78 6013.7 -- -- wet samples in as 9/23b-A18 (PN1)
9/23b-A18W Cuttings 3416.81 5950.92 -- -- wet samples in as 9/23B-A18(PN1W) - curated Sept`00 to fill gap
9/23b-A18X Cuttings 4700.02 5486.4 -- -- wet samples in as 9/23B-Pn 1x(A18x) - curated Aug'99 to fill gap
9/23b-A18Y Cuttings 2304.29 5614.42 -- -- wet samples in as 9/23B-PN1Y(A18Y) - curated Aug'99 to fill gap
9/23b-A18Z Cuttings 3200.4 4718.3 -- -- wet samples in as 9/23B-PN1z(A18z) - curated Aug'99 to fill gap

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
9/23b-A18 918.6671752929688 6015.22802734375 6 0 2026-08-06 16:11:41.314812+00 View Log
9/23b-A18W 5019.90380859375 5945.73388671875 7 0 2026-08-06 16:11:44.767992+00 View Log
9/23b-A18X 4632.9599609375 5486.09521484375 4 0 2026-08-06 16:11:47.200096+00 View Log
9/23b-A18Y 2293.6201171875 5636.97119140625 7 0 2026-08-06 16:11:49.35928+00 View Log
9/23b-A18Z 2268.016845703125 4701.9970703125 5 0 2026-08-06 16:11:53.686392+00 View Log

Source LAS Manifest (Best Curve per Type)

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9/23b-A18
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 4924.044 6015.228 7161
deep_resistivity RES_DEP OGA Batch Unzipped 2287.8288000000002 5993.5872 24317
gamma_ray GRLW Energective CorrectedLOGS 918.6672000000001 5990.6916 33282
gamma_ray GR OGA Batch Unzipped 914.4000000000001 5990.6916 33310
med_resistivity RES_MED OGA Batch Unzipped 2287.3716 5993.5872 22541
neutron_por NEU OGA Batch Unzipped 3572.1036000000004 5997.0924 15913
neutron_por LTNP Energective CorrectedLOGS 3572.1036000000004 5997.0924 15913
shallow_resistivity RES_SLW OGA Batch Unzipped 2287.8288000000002 5993.5872 24317
tvdss SS Energective CorrectedLOGS 918.6672000000001 5997.2448 33325
9/23b-A18W
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 5492.6484 5937.6564 2909
bulk_density LRHO Energective CorrectedLOGS 5492.6484 5937.6564 2909
caliper CLD Energective CorrectedLOGS 5492.6484 5928.8172 2863
caliper CALI OGA Batch Unzipped 5492.6484 5928.8172 2863
deep_resistivity RES_DEP OGA Batch Unzipped 5019.903600000001 5944.9716 5384
density_correction LDRH Energective CorrectedLOGS 5492.6484 5937.6564 2909
density_correction DENC OGA Batch Unzipped 5492.6484 5937.6564 2909
gamma_ray GR OGA Batch Unzipped 5020.818 5945.7336000000005 5781
gamma_ray GRLW Energective CorrectedLOGS 5020.6656 5945.7336000000005 5844
med_resistivity RES_MED OGA Batch Unzipped 5019.903600000001 5945.276400000001 5776
neutron_por LTNP Energective CorrectedLOGS 5492.6484 5935.8276000000005 2858
neutron_por NEU OGA Batch Unzipped 5492.6484 5935.8276000000005 2894
tvdss SS Energective CorrectedLOGS 5019.751200000001 5946.0384 6079
9/23b-A18X
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
deep_resistivity RES_DEP OGA Batch Unzipped 4663.4400000000005 4763.8716 658
gamma_ray GR OGA Batch Unzipped 4663.4400000000005 5485.638 5374
gamma_ray GRLW Energective CorrectedLOGS 4632.96 5486.095200000001 5599
med_resistivity RES_MED OGA Batch Unzipped 4663.4400000000005 4763.8716 660
neutron_por NEU OGA Batch Unzipped 4663.4400000000005 5480.4564 5337
neutron_por LTNP Energective CorrectedLOGS 4632.96 5480.9136 5541
tvdss SS Energective CorrectedLOGS 4632.96 5486.400000000001 5601
9/23b-A18Y
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density CDEN Energective CorrectedLOGS 5340.4008 5629.0464 1895
bulk_density LRHO Energective CorrectedLOGS 5340.4008 5629.0464 1895
bulk_density DEN OGA Batch Unzipped 5340.4008 5628.894 1894
deep_resistivity RES_DEP OGA Batch Unzipped 5340.2484 5636.9712 1916
density_correction LDRH Energective CorrectedLOGS 5340.2484 5629.0464 1895
density_correction CDRH Energective CorrectedLOGS 5340.2484 5629.0464 1895
density_correction DENC OGA Batch Unzipped 5340.4008 5628.894 1894
gamma_ray GR OGA Batch Unzipped 4300.1184 5637.276 7775
gamma_ray GRLW Energective CorrectedLOGS 2293.62 5632.704000000001 21127
med_resistivity RES_MED OGA Batch Unzipped 4300.1184 5636.9712 8506
neutron_por NEU OGA Batch Unzipped 5340.7056 5626.9128 1864
neutron_por CNEU Energective CorrectedLOGS 5340.7056 5627.0652 1880
neutron_por LTNP Energective CorrectedLOGS 5340.7056 5627.0652 1880
shallow_resistivity RES_SLW OGA Batch Unzipped 4300.1184 5636.9712 8528
tvdss SS Energective CorrectedLOGS 2293.62 5633.0088000000005 21913
9/23b-A18Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
deep_resistivity RES_DEP OGA Batch Unzipped 2271.0648 4696.6632 15917
gamma_ray GRLW Energective CorrectedLOGS 2268.0168000000003 4693.6152 15917
gamma_ray GR OGA Batch Unzipped 2268.0168000000003 4693.6152 15917
med_resistivity RES_MED OGA Batch Unzipped 2271.0648 4696.6632 15917
neutron_por NEU OGA Batch Unzipped 4300.1184 4701.9972 2638
neutron_por LTNP Energective CorrectedLOGS 3895.344 4701.9972 5294
shallow_resistivity RES_SLW OGA Batch Unzipped 2271.0648 4696.6632 15917
tvdss SS Energective CorrectedLOGS 2268.0168000000003 4702.149600000001 15973

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/23b-A18 485 6015.500 1643.953 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b-A18\WELL_PATH\WDD_QC\9_23b-A18_wdd_WDD_FILE_1680649_DATACO_MAPPED.csv
9/23b-A18W 542 5950.900 1565.709 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b-A18W\WELL_PATH\WDD_QC\9_23b-A18W_wdd_WDD_FILE_1680650_DATACO_MAPPED.csv
9/23b-A18X 999 5503.700 1580.541 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b-A18X\WELL_PATH\WDD_QC\9_23b-A18X_wdd_WDD_FILE_1680651_DATACO_MAPPED.csv
9/23b-A18Y 1006 5642.400 1570.374 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b-A18Y\WELL_PATH\WDD_QC\9_23b-A18Y_wdd_WDD_FILE_1680652_DATACO_MAPPED.csv
9/23b-A18Z 437 4718.300 1524.337 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_23b-A18Z\WELL_PATH\WDD_QC\9_23b-A18Z_wdd_WDD_FILE_1680653_DATACO_MAPPED.csv

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