Well Data Manager / Well Summary / 21/12- 2

21/12- 2

Decommissioned

Well Header

Well No
21/12- 2
NSTA DEN No
--
Well Name
--
Drill Seq No
2
Quadrant / Block
21 / 12
Surface Location
57.646788, 0.340109
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Original Operator
SHELL / ESSO
Sub Area Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Licence No
P73
Licence Type
Production
Spud Date
1981-11-15
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

21/12- 2 Original
Abandoned Phase 3 Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
--
Dev Type
--
Convention
--
Primary Target
--
Well Seq
--
Datum Type
--
Datum Elev (m)
--
Ground Elev (m)
--
Water Depth (m)
--
TD MD (m)
--
TD TVDSS (m)
--
TD Datum Depth (m)
--
TD Datum Type
--
Spud Date
1981-11-15
TD Reached
1981-11-20
Completion Date
1981-11-20
Release Date
1985-11-20
21/12- 2B Sidetrack B
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
B
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.603
Ground Elev (m)
--
Water Depth (m)
103.02
TD MD (m)
3953.561
TD TVDSS (m)
3926.248
TD Datum Depth (m)
25.603
TD Datum Type
Kelly Bushing
Spud Date
1981-12-06
TD Reached
1982-03-31
Completion Date
1982-04-17
Release Date
1986-04-17

Formation Tops (31)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/12- 2B Horda Cenozoic 1334.000 1308.384 Lloyds Register
Stronsay Cenozoic 1334.000 1308.384 Lloyds Register
Balder Tuff Cenozoic 1707.000 1681.367 Lloyds Register
Balder Cenozoic 1707.000 1681.367 Lloyds Register
Moray Mesozoic 1707.000 1681.367 Lloyds Register
Sele Mesozoic 1715.000 1689.367 Lloyds Register
Cromarty Sandstone Cenozoic 1716.000 1690.367 Lloyds Register
Forties Sandstone Mesozoic 1830.000 1804.366 Lloyds Register
Montrose Mesozoic 1918.000 1892.366 Lloyds Register
Lista Mesozoic 1918.000 1892.366 Lloyds Register
Balmoral Sandstone Cenozoic 1948.000 1922.365 Lloyds Register
Glamis Tuff 1993.000 1967.365 Lloyds Register
Andrew Sandstone Cenozoic 2006.000 1980.364 Lloyds Register
Maureen Mesozoic 2131.000 2105.361 Lloyds Register
Maureen Sandstone Mesozoic 2220.000 2194.360 Lloyds Register
Ekofisk Mesozoic 2284.000 2258.357 Lloyds Register
Chalk Mesozoic 2284.000 2258.357 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2332.000 2306.354 Lloyds Register
Cromer Knoll Mesozoic 2742.000 2716.317 Lloyds Register
Rodby Mesozoic 2742.000 2716.317 Lloyds Register
Sola 2771.000 2745.315 Lloyds Register
Valhall Mesozoic 2807.000 2781.308 Lloyds Register
Heron Palaeozoic 2841.000 2815.293 Lloyds Register
Smith Bank Mesozoic 2841.000 2815.293 Lloyds Register
Zechstein Palaeozoic 3271.000 3244.390 Lloyds Register
Turbot Anhydrite Palaeozoic 3271.000 3244.390 Lloyds Register
Kupferschiefer Palaeozoic 3475.000 3448.184 Lloyds Register
Auk 3477.000 3450.182 Lloyds Register
Rotliegend 3477.000 3450.182 Lloyds Register
Carboniferous Palaeozoic 3619.000 3592.079 Lloyds Register
Carboniferous Undifferentiated Palaeozoic 3619.000 3592.079 Lloyds Register

Lithology Intervals

21/12- 2B Curve: SANDCOUNT 76 intervals  ·  MD 292.760 – 3932.072 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/NSTA Centr...
Sandstone (65)
Limestone (9)
Coal (2)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
21/12- 2 0 0 0 0 0 0 0 0 0
21/12- 2B 9 15 7 31 31 5 0 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/12- 2B Cuttings 618.74 3950.21 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/12- 2B 46.93920135498047 3951.57958984375 7 0 2026-08-06 17:21:54.498264+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/12- 2B
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN CGG Digital Well Logs 615.696 3950.5128000000004 21883
caliper CAL CGG Digital Well Logs 2332.3296 3938.016 10537
caliper CALI CGG Digital Well Logs 615.696 3951.2748 21888
comp_sonic AC CGG Digital Well Logs 185.4708 3946.398 24574
deep_resistivity RILD CGG Digital Well Logs 188.3664 3951.5796 24650
density_correction COR CGG Digital Well Logs 615.8484000000001 3950.5128000000004 21882
gamma_ray GR CGG Digital Well Logs 46.9392 3942.8928 25496
gamma_ray GRD CGG Digital Well Logs 607.9236000000001 3946.398 21907
neutron_por CN CGG Digital Well Logs 1518.9708 3947.1600000000003 15932

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/12- 2 0 -- -- --
21/12- 2B 116 3914.240 3886.975 D:\BigSpatial\nsta_raw\CGG_Deviation\21-12-2B 4259av_CGG-Deviation.xlsx

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