16/08b-A21

Decommissioned

Well Header

Well No
16/08b-A21
NSTA DEN No
5819
Well Name
--
Drill Seq No
21
Quadrant / Block
16 / 8 b
Surface Location
58.721547, 1.400418
Source Datum
ED50
Subsea Well
Unknown
Platform
A
Slot No
02
Operator
BP EXPLORATION (ALPHA) LIMITED
Original Operator
--
Sub Area Operator
CHRYSAOR PRODUCTION (U.K.) LIMITED
Licence No
P341
Licence Type
Production
Spud Date
1996-04-12
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

16/08b-A21 Original
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
PT
Well Seq
WB1
Datum Type
Rotary Table
Datum Elev (m)
67.970
Ground Elev (m)
--
Water Depth (m)
102.41
TD MD (m)
5641.848
TD TVDSS (m)
4237.025
TD Datum Depth (m)
67.970
TD Datum Type
Kelly Bushing
Spud Date
1996-04-12
TD Reached
1996-07-10
Completion Date
1996-07-20
Release Date
2000-07-20

Formation Tops (29)

Wellbore Formation Era MD (m) TVDSS (m) Provider
16/08b-A21 Nordland Cenozoic 170.000 -67.970 BGS LithoStrat Upper
Powder Sand 796.000 539.248 BGS LithoStrat Upper
Nordland Cenozoic 864.000 599.133 BGS LithoStrat Upper
Frigg Formation 1625.000 1174.895 BGS LithoStrat Upper
Nordland Cenozoic 1960.000 1405.654 BGS LithoStrat Upper
Balder Cenozoic 2640.000 1878.267 BGS LithoStrat Upper
Sele Mesozoic 2679.000 1905.057 BGS LithoStrat Upper
Forties Mesozoic 2709.000 1925.643 BGS LithoStrat Upper
Andrew Cenozoic 3045.000 2153.058 BGS LithoStrat Upper
Maureen Mesozoic 3444.000 2416.313 BGS LithoStrat Upper
Ekofisk Mesozoic 3722.000 2592.095 BGS LithoStrat Upper
Tor Mesozoic 3869.000 2685.175 BGS LithoStrat Upper
Flounder Mesozoic 4194.000 2903.852 BGS LithoStrat Upper
Herring Mesozoic 4844.000 3417.132 BGS LithoStrat Upper
Plenus Marl 4895.000 3461.344 BGS LithoStrat Upper
Hidra Mesozoic 4898.000 3463.932 BGS LithoStrat Upper
Carrack Formation Mesozoic 4967.000 3522.887 BGS LithoStrat Upper
Munk Marl Member 5013.000 3561.372 BGS LithoStrat Upper
Valhall Mesozoic 5043.000 3586.197 BGS LithoStrat Upper
Utvik Formation 5174.000 3691.813 BGS LithoStrat Upper
Kimmeridge Clay 5196.000 3709.065 BGS LithoStrat Upper
Brae Unit 1 5238.000 3741.285 BGS LithoStrat Upper
Unknown 5400.000 3865.803 BGS LithoStrat Upper
Miller H 5419.000 3878.705 BGS LithoStrat Upper
Miller K 5432.000 3887.280 BGS LithoStrat Upper
Miller L 5474.000 3914.843 BGS LithoStrat Upper
Miller M 5482.000 3919.783 BGS LithoStrat Upper
Miller M 5485.000 3921.619 BGS LithoStrat Upper
Miller P 5525.000 3944.824 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
16/08b-A21 0 0 0 29 29 0 0 0 0 View

Hydrocarbon Occurrence (4)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
16/08b-A21 Oil OW MILH 5419.344 -- 12 m thick
16/08b-A21 Oil OW MILK 5431.536 -- 43 m thick
16/08b-A21 Oil OW MILL 5474.2080000000005 -- 7 m thick
16/08b-A21 Oil OW MILM 5481.5232000000005 -- 4 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
16/08b-A21 57.9119987487793 5658.30712890625 11 0 2026-08-08 00:49:41.853881+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
16/08b-A21
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 5154.168 5599.0236 2920
bulk_density CDEN Energective CorrectedLOGS 5154.10603416 5624.406703920001 3087
caliper CALI OGA Batch Unzipped 5154.168 5597.4996 2910
caliper CLD Energective CorrectedLOGS 5154.10603416 5601.24220872 2935
comp_sonic DT OGA Batch Unzipped 2586.6852 5660.136 9212
comp_sonic DTC Energective CorrectedLOGS 2588.3308456800005 5658.23910768 9076
deep_resistivity RES_DEP OGA Batch Unzipped 5160.264 5598.414 2876
deep_resistivity ILD Energective CorrectedLOGS 5160.201973200001 5598.0418392 2874
deep_resistivity AT90 Energective CorrectedLOGS 5154.56323416 5604.13774776 2951
density_correction CDRH Energective CorrectedLOGS 5154.10603416 5627.60707344 3108
gamma_ray GRLW Energective CorrectedLOGS 57.912000000000006 5069.67747048 32887
gamma_ray GR OGA Batch Unzipped 57.7596 5660.136 36762
gamma_ray GRI Energective CorrectedLOGS 5053.37085336 5648.0284296 3903
med_resistivity RES_MED OGA Batch Unzipped 5160.264 5598.414 2876
med_resistivity AT20 Energective CorrectedLOGS 5155.02043416 5604.13774776 2948
med_resistivity AT30 Energective CorrectedLOGS 5155.32520368 5604.44254776 2948
med_resistivity AT60 Energective CorrectedLOGS 5154.71563416 5604.13774776 2950
med_resistivity ILM Energective CorrectedLOGS 5160.201973200001 5598.0418392 2874
neutron_por CNEU Energective CorrectedLOGS 5125.7599694400005 5620.13956488 3245
neutron_por NEU OGA Batch Unzipped 5154.168 5593.5372 2884
pef CPEF Energective CorrectedLOGS 5154.10603416 5609.4716868000005 2989
shallow_resistivity AT10 Energective CorrectedLOGS 5155.782403680001 5604.29014776 2903
tvdss SS Energective CorrectedLOGS 57.912000000000006 5658.23910768 36749
water_sat SW OGA Batch Unzipped 5419.344 5567.4768 973

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
16/08b-A21 430 5641.800 3999.624 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_16\16_08b-A21\WELL_PATH\WDD_QC\16_08b-A21_wdd_WDD_FILE_1683430_DATACO_MAPPED.csv

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