16/21a-B3

Present

Well Header

Well No
16/21a-B3
NSTA DEN No
2543
Well Name
--
Drill Seq No
3
Quadrant / Block
16 / 21 a
Surface Location
58.228685, 1.107362
Source Datum
ED50
Subsea Well
Yes
Platform
B
Slot No
12
Operator
PREMIER OIL E&P UK LIMITED
Original Operator
--
Sub Area Operator
PREMIER OIL E&P UK LIMITED
Licence No
P201
Licence Type
Production
Spud Date
1984-11-09
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

16/21a-B3 Original
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
AB
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
145.39
TD MD (m)
3027.580
TD TVDSS (m)
2566.416
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
1984-11-09
TD Reached
1985-02-01
Completion Date
1986-07-03
Release Date
1990-07-03

Formation Tops (14)

Wellbore Formation Era MD (m) TVDSS (m) Provider
16/21a-B3 Hordaland Cenozoic 171.000 145.702 BGS LithoStrat Upper
Hordaland Cenozoic 238.000 212.702 BGS LithoStrat Upper
Hordaland Cenozoic 1484.000 1458.702 BGS LithoStrat Upper
Hordaland Cenozoic 1731.000 1705.702 BGS LithoStrat Upper
Hordaland Cenozoic 2225.000 2199.702 BGS LithoStrat Upper
Balder Cenozoic 2303.000 2277.702 BGS LithoStrat Upper
Sele Mesozoic 2341.000 2315.702 BGS LithoStrat Upper
Lista Mesozoic 2396.000 2370.702 BGS LithoStrat Upper
Andrew Cenozoic 2441.000 2415.702 BGS LithoStrat Upper
Maureen Mesozoic 2667.000 2641.702 BGS LithoStrat Upper
Ekofisk Mesozoic 2717.000 2691.702 BGS LithoStrat Upper
Tor Mesozoic 2774.000 2748.702 BGS LithoStrat Upper
Craiganee Palaeozoic 2858.000 2832.702 BGS LithoStrat Upper
Unknown 2868.000 2842.702 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
16/21a-B3 0 0 0 14 14 0 7 0 0 View

Hydrocarbon Occurrence (3)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
16/21a-B3 Oil O Lista Formation 2396.0328 -- 45 m thick
16/21a-B3 Oil O Andrew Sandstone unit 2441.1432 -- 226 m thick
16/21a-B3 Oil O CRGN 2858.4144 -- 9 m thick

Rock Samples (7)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
16/21a-B3 Core #1 2419.2 2424.41 -- -- end of core 1 missing .
16/21a-B3 Core #2 2437.49 2453.64 -- -- .
16/21a-B3 Core #3 2455.77 2474.06 -- -- .
16/21a-B3 Core #4 2859.63 2861.19 -- -- poor core .
16/21a-B3 Core #5 2872.74 2873.35 -- -- poor core .
16/21a-B3 Core #6 2881.88 2883.41 -- -- poor core .
16/21a-B3 Core #7 2884.02 2885.54 -- -- poor core .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
16/21a-B3 170.68800354003906 3015.84375 14 0 2026-08-06 09:19:58.981621+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
16/21a-B3
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 1196.3400000000001 3015.8436 11929
caliper CALI OGA Batch Unzipped 305.4096 3011.1192 17722
comp_sonic DT OGA Batch Unzipped 170.68800000000002 3003.1944000000003 18434
deep_resistivity RES_DEP OGA Batch Unzipped 1308.2016 3003.1944000000003 11118
density_correction DENC OGA Batch Unzipped 2284.476 3015.8436 4795
gamma_ray GR OGA Batch Unzipped 170.68800000000002 3004.8708 18550
med_resistivity RES_MED OGA Batch Unzipped 1308.2016 3003.1944000000003 11118
micro_resistivity RES_MIC OGA Batch Unzipped 2456.688 2555.4432 649
neutron_por NEU OGA Batch Unzipped 2011.68 2555.4432 3564
porosity PHIE OGA Batch Unzipped 2846.9844000000003 3004.1088 1032
shallow_resistivity RES_SLW OGA Batch Unzipped 1308.2016 2867.8632000000002 10230
sp SP OGA Batch Unzipped 1308.2016 3007.3092 11140
vshale VCLAY OGA Batch Unzipped 2846.9844000000003 3004.1088 1032
water_sat SW OGA Batch Unzipped 2846.9844000000003 3004.1088 1032

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
16/21a-B3 0 -- -- --

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