Well Data Manager / Well Summary / 9/18b- 31

9/18b- 31

Decommissioned

Well Header

Well No
9/18b- 31
NSTA DEN No
6272
Well Name
--
Drill Seq No
31
Quadrant / Block
9 / 18 b
Surface Location
59.347774, 1.585942
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
P496
Licence Type
Production
Spud Date
1997-12-12
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (4)

9/18b- 31 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
DG
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.300
Ground Elev (m)
--
Water Depth (m)
113.54
TD MD (m)
2558.190
TD TVDSS (m)
2526.490
TD Datum Depth (m)
24.994
TD Datum Type
Kelly Bushing
Spud Date
1997-12-12
TD Reached
1997-12-29
Completion Date
1998-01-06
Release Date
2002-01-06
9/18b- 31X Sidetrack X parent: 9/18b- 31Y
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
SE
Well Seq
WB4
Datum Type
Rotary Table
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
113.54
TD MD (m)
1946.148
TD TVDSS (m)
1829.410
TD Datum Depth (m)
25.298
TD Datum Type
Rotary Table
Spud Date
2000-02-24
TD Reached
2000-02-29
Completion Date
2000-03-02
Release Date
2004-03-02
9/18b- 31Y Sidetrack Y parent: 9/18b- 31Z
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
SE
Well Seq
WB3
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
113.54
TD MD (m)
2032.406
TD TVDSS (m)
1854.098
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
2000-02-14
TD Reached
2000-02-20
Completion Date
2000-02-24
Release Date
2004-02-24
9/18b- 31Z Sidetrack Z parent: 9/18b- 31
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
DG
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
113.54
TD MD (m)
2724.912
TD TVDSS (m)
1818.742
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
2000-01-25
TD Reached
2000-02-05
Completion Date
2000-02-14
Release Date
2004-02-14

Formation Tops (57)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/18b- 31 Nordland Cenozoic 139.000 113.700 BGS LithoStrat Upper
Lark Formation Cenozoic 680.000 654.681 BGS LithoStrat Upper
Lark Formation Cenozoic 847.000 821.676 BGS LithoStrat Upper
Grid Member 936.000 910.676 BGS LithoStrat Upper
Horda Formation Cenozoic 1136.000 1110.674 BGS LithoStrat Upper
Frigg Formation 1670.000 1644.656 BGS LithoStrat Upper
Horda Formation Cenozoic 1672.000 1646.655 BGS LithoStrat Upper
B4 Zone 1687.000 1661.653 BGS LithoStrat Upper
B3 Unit 1700.000 1674.651 BGS LithoStrat Upper
B2 Unit 1742.000 1716.645 BGS LithoStrat Upper
B2 Sand 1750.000 1724.644 BGS LithoStrat Upper
B2 Unit 1772.000 1746.641 BGS LithoStrat Upper
B1 Unit 1789.000 1763.639 BGS LithoStrat Upper
B1 Sand 1797.000 1771.639 BGS LithoStrat Upper
B1 Unit 1814.000 1788.637 BGS LithoStrat Upper
Sele Mesozoic 1826.000 1800.635 BGS LithoStrat Upper
Lista Mesozoic 1972.000 1946.623 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 2065.000 2039.607 BGS LithoStrat Upper
Lista Mesozoic 2167.000 2141.554 BGS LithoStrat Upper
Maureen Mesozoic 2174.000 2148.548 BGS LithoStrat Upper
Statfjord Mesozoic 2271.000 2245.311 BGS LithoStrat Upper
Cormorant Mesozoic 2356.000 2329.635 BGS LithoStrat Upper
9/18b- 31X Unknown 139.000 113.702 BGS LithoStrat Upper
Lark Formation Cenozoic 845.000 819.678 BGS LithoStrat Upper
Grid Member 937.000 911.564 BGS LithoStrat Upper
Horda Formation Cenozoic 1145.000 1113.687 BGS LithoStrat Upper
Balder Cenozoic 1754.000 1659.394 BGS LithoStrat Upper
B3 Unit 1767.000 1670.848 BGS LithoStrat Upper
B2 Unit 1836.000 1731.758 BGS LithoStrat Upper
B1 Unit 1871.000 1762.740 BGS LithoStrat Upper
B1 Sand 1895.000 1784.014 BGS LithoStrat Upper
Sele Mesozoic 1920.000 1806.208 BGS LithoStrat Upper
9/18b- 31Y Unknown 139.000 113.702 BGS LithoStrat Upper
Lark Formation Cenozoic 791.000 765.683 BGS LithoStrat Upper
Grid Member 936.000 910.463 BGS LithoStrat Upper
Horda Formation Cenozoic 1142.000 1110.829 BGS LithoStrat Upper
Balder Cenozoic 1824.000 1662.174 BGS LithoStrat Upper
B3 Unit 1832.000 1668.504 BGS LithoStrat Upper
B2 Unit 1905.000 1726.678 BGS LithoStrat Upper
B1 Unit 1944.000 1758.029 BGS LithoStrat Upper
B1 Sand 1973.000 1781.470 BGS LithoStrat Upper
Sele Mesozoic 1983.000 1789.581 BGS LithoStrat Upper
9/18b- 31Z Unknown 139.000 113.702 BGS LithoStrat Upper
Lark Formation Cenozoic 845.000 819.679 BGS LithoStrat Upper
Grid Member 937.000 911.154 BGS LithoStrat Upper
Horda Claystone Member 1154.000 1107.387 BGS LithoStrat Upper
Balder Cenozoic 2365.000 1643.986 BGS LithoStrat Upper
B3 Unit 2399.000 1658.835 BGS LithoStrat Upper
B3 Sand 2487.000 1698.917 BGS LithoStrat Upper
B3 Unit 2491.000 1700.798 BGS LithoStrat Upper
B2 Unit 2523.000 1715.841 BGS LithoStrat Upper
B1 Unit 2590.000 1748.147 BGS LithoStrat Upper
B1 Sand 2608.000 1757.097 BGS LithoStrat Upper
B1 Unit 2633.000 1769.527 BGS LithoStrat Upper
B1 Sand 2644.000 1775.036 BGS LithoStrat Upper
B1 Unit 2653.000 1779.772 BGS LithoStrat Upper
Sele Mesozoic 2673.000 1790.295 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
9/18b- 31 0 0 0 22 22 0 0 1 0 View
9/18b- 31X 0 0 0 10 10 0 0 0 0 View
9/18b- 31Y 0 0 0 10 10 0 0 1 0 View
9/18b- 31Z 0 0 0 15 15 0 0 0 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (2)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
9/18b- 31 Cuttings 838.2 2557.27 -- -- --
9/18b- 31Y Cuttings 862.58 2032.41 -- -- --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
9/18b- 31 137.16000366210938 2554.986083984375 10 0 2026-08-06 19:01:53.480787+00 View Log
9/18b- 31X 831.6467895507812 1930.907958984375 3 0 2026-08-06 15:58:12.371916+00 View Log
9/18b- 31Y 789.2796020507812 2023.1099853515625 10 0 2026-08-06 19:01:56.651401+00 View Log
9/18b- 31Z 832.713623046875 2715.463134765625 4 0 2026-08-06 15:58:15.073786+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
9/18b- 31
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 848.4108 2529.84 10876
bulk_density CDEN Energective CorrectedLOGS 848.4108 2529.84 10876
bulk_density ZDEN CGG Digital Well Logs 838.8096 2529.84 11015
caliper CLD Energective CorrectedLOGS 790.4988000000001 2528.3160000000003 11304
caliper CALI OGA Batch Unzipped 790.4988000000001 2528.3160000000003 11304
caliper CALX CGG Digital Well Logs 838.8096 2528.6208 11007
comp_sonic DTC Energective CorrectedLOGS 839.2668 2527.0968000000003 10899
comp_sonic DT OGA Batch Unzipped 839.2668 2527.0968000000003 10899
comp_sonic DT24 CGG Digital Well Logs 838.8096 2527.0968000000003 10998
deep_resistivity AT90 Energective CorrectedLOGS 839.2668 2554.9860000000003 11259
deep_resistivity RES_DEP OGA Batch Unzipped 839.2668 2554.8336 11203
density_correction DENC OGA Batch Unzipped 790.6512 2528.4684 11237
density_correction CDRH Energective CorrectedLOGS 848.2584 2528.4684 10859
density_correction ZCOR CGG Digital Well Logs 838.8096 2528.4684 11006
gamma_ray GRI Energective CorrectedLOGS 137.16 2521.1532 15644
gamma_ray GR CGG Digital Well Logs 137.3124 2519.172 15630
med_resistivity AT20 Energective CorrectedLOGS 839.8764 2554.9860000000003 11255
med_resistivity AT60 Energective CorrectedLOGS 839.724 2554.9860000000003 11256
med_resistivity AT30 Energective CorrectedLOGS 840.486 2554.9860000000003 11251
med_resistivity RES_MED OGA Batch Unzipped 823.7220000000001 2554.8336 11305
neutron_por NEU OGA Batch Unzipped 848.4108 2524.5060000000003 10783
neutron_por CNEU Energective CorrectedLOGS 848.4108 2523.1344 10760
neutron_por CNC CGG Digital Well Logs 792.48 2521.9152 11349
pef CPEF Energective CorrectedLOGS 849.63 2529.9924 10870
pef PE CGG Digital Well Logs 838.8096 2529.9924 11016
pef PEF OGA Batch Unzipped 792.0228000000001 2529.9924 11248
potassium K CGG Digital Well Logs 791.2608 2512.4664000000002 11295
shallow_resistivity RES_SLW OGA Batch Unzipped 823.7220000000001 2554.8336 11305
shallow_resistivity AT10 Energective CorrectedLOGS 840.0288 2554.9860000000003 11254
shear_sonic DTS Energective CorrectedLOGS 839.2668 1787.4996 6223
thorium TH CGG Digital Well Logs 791.2608 2512.4664000000002 11295
tvdss SS Energective CorrectedLOGS 137.16 2555.1384000000003 15867
9/18b- 31X
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
caliper CALI OGA Batch Unzipped 853.44 1929.2316 7060
deep_resistivity RES_DEP OGA Batch Unzipped 839.2668 1929.5364000000002 7155
gamma_ray GR OGA Batch Unzipped 822.96 1930.7556000000002 7228
gamma_ray GRLW Energective CorrectedLOGS 831.6468000000001 1930.9080000000001 7214
tvdss SS Energective CorrectedLOGS 831.1896 1931.2128 7219
9/18b- 31Y
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density CDEN Energective CorrectedLOGS 842.3148 2001.4692 7607
bulk_density DEN OGA Batch Unzipped 844.7532 2023.1100000000001 7733
bulk_density RHOZ CGG Digital Well Logs 838.8096 1999.488 7617
caliper HCAL CGG Digital Well Logs 838.5048 1992.1728 7571
caliper CLD Energective CorrectedLOGS 838.0476 1992.1728 7574
caliper CALI OGA Batch Unzipped 789.2796000000001 2024.634 8107
comp_sonic DT OGA Batch Unzipped 844.9056 2009.5464000000002 7639
comp_sonic DTCO CGG Digital Well Logs 792.9372000000001 2014.1184 8014
comp_sonic DTC Energective CorrectedLOGS 865.3272000000001 2013.9660000000001 7538
comp_sonic DT4P CGG Digital Well Logs 792.1752 2011.9848000000002 8005
deep_resistivity RES_DEP OGA Batch Unzipped 844.296 2024.634 7746
deep_resistivity AT90 Energective CorrectedLOGS 844.4484 2023.1100000000001 7735
deep_resistivity AHT90 CGG Digital Well Logs 840.486 2019.7572 7739
density_correction HDRA CGG Digital Well Logs 838.8096 1999.488 7617
density_correction CDRH Energective CorrectedLOGS 841.7052 2001.9264 7614
gamma_ray GR CGG Digital Well Logs 790.6512 1992.4776000000002 7887
gamma_ray SGR CGG Digital Well Logs 793.3944 1986.9912000000002 7833
gamma_ray CGR CGG Digital Well Logs 793.3944 1986.9912000000002 7833
gamma_ray GRI Energective CorrectedLOGS 789.2796000000001 1995.3732 7915
med_resistivity AT30 Energective CorrectedLOGS 844.6008 2020.9764 7720
med_resistivity AT20 Energective CorrectedLOGS 844.4484 2021.4336 7724
med_resistivity AT60 Energective CorrectedLOGS 844.4484 2022.1956 7729
med_resistivity AHT30 CGG Digital Well Logs 839.5716 2019.7572 7745
med_resistivity AHT60 CGG Digital Well Logs 840.486 2019.7572 7739
med_resistivity AHT20 CGG Digital Well Logs 839.5716 2019.7572 7745
med_resistivity RES_MED OGA Batch Unzipped 789.2796000000001 2024.634 8107
neutron_por CNEU Energective CorrectedLOGS 789.2796000000001 1996.8972 7925
neutron_por NPHI CGG Digital Well Logs 789.7368 1997.6592 7927
neutron_por NEU OGA Batch Unzipped 844.7532 2024.634 7743
pef PEF OGA Batch Unzipped 789.2796000000001 2023.1100000000001 8097
pef PEFZ CGG Digital Well Logs 838.8096 1999.488 7617
pef CPEF Energective CorrectedLOGS 847.4964 2000.0976 7564
potassium POTA CGG Digital Well Logs 793.3944 1986.9912000000002 7833
shallow_resistivity AHT10 CGG Digital Well Logs 840.486 2019.7572 7739
shallow_resistivity RES_SLW OGA Batch Unzipped 844.296 2024.634 7746
shallow_resistivity AT10 Energective CorrectedLOGS 844.4484 2021.586 7725
shear_sonic DTS Energective CorrectedLOGS 848.868 2014.1184 7647
shear_sonic DTSM CGG Digital Well Logs 792.9372000000001 2014.1184 8014
shear_sonic DT4S CGG Digital Well Logs 792.1752 2013.9660000000001 2916
thorium THOR CGG Digital Well Logs 793.3944 1986.9912000000002 7833
tvdss SS Energective CorrectedLOGS 789.1272 2023.2624 8099
uranium URAN CGG Digital Well Logs 793.3944 1986.9912000000002 7833
9/18b- 31Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density LRHO Energective CorrectedLOGS 2226.2592 2715.4632 3211
density_correction LDRH Energective CorrectedLOGS 2257.9584 2715.4632 3003
gamma_ray GRLW Energective CorrectedLOGS 1855.1652000000001 2830.6776 6402
gamma_ray GR OGA Batch Unzipped 832.7136 2706.0144 12293
gamma_ray GRI Energective CorrectedLOGS 832.7136 2706.0144 12293
neutron_por LTNP Energective CorrectedLOGS 2223.9732 2713.0248 3210
tvdss SS Energective CorrectedLOGS 832.7136 2834.3352 13135

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/18b- 31 158 2558.186 2526.552 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_18b- 31\WELL_PATH\WDD_QC\9_18b-_31_wdd_WDD_FILE_208920305_DATACO_MAPPED.csv
9/18b- 31X 147 1946.148 1829.450 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_18b- 31X\WELL_PATH\WDD_QC\9_18b-_31X_wdd_WDD_FILE_157937980_DATACO_MAPPED.csv
9/18b- 31Y 152 2032.406 1829.773 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_18b- 31Y\WELL_PATH\WDD_QC\9_18b-_31Y_wdd_WDD_FILE_157938309_DATACO_MAPPED.csv
9/18b- 31Z 171 2724.912 1818.591 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_18b- 31Z\WELL_PATH\WDD_QC\9_18b-_31Z_wdd_WDD_FILE_157938777_DATACO_MAPPED.csv

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