Well Data Manager / Well Summary / 21/12- 1

21/12- 1

Decommissioned

Well Header

Well No
21/12- 1
NSTA DEN No
487
Well Name
--
Drill Seq No
1
Quadrant / Block
21 / 12
Surface Location
57.558928, 0.301731
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Original Operator
--
Sub Area Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Licence No
P73
Licence Type
Production
Spud Date
1973-04-24
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/12- 1 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
--
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
19.507
Ground Elev (m)
--
Water Depth (m)
91.14
TD MD (m)
2767.280
TD TVDSS (m)
2747.040
TD Datum Depth (m)
19.507
TD Datum Type
Kelly Bushing
Spud Date
1973-04-24
TD Reached
1973-05-25
Completion Date
1973-05-27
Release Date
1977-05-27

Formation Tops (24)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/12- 1 Stronsay Cenozoic 1356.000 1336.240 Lloyds Register
Horda Cenozoic 1356.000 1336.240 Lloyds Register
Balder Cenozoic 1753.000 1733.166 Lloyds Register
Moray Mesozoic 1753.000 1733.166 Lloyds Register
Balder Tuff Cenozoic 1754.000 1734.166 Lloyds Register
Sele Mesozoic 1782.000 1762.161 Lloyds Register
Lista Mesozoic 1844.000 1824.150 Lloyds Register
Montrose Mesozoic 1844.000 1824.150 Lloyds Register
Balmoral Sandstone Cenozoic 1873.000 1853.144 Lloyds Register
Maureen Mesozoic 2006.000 1986.117 Lloyds Register
Ekofisk Mesozoic 2068.000 2048.104 Lloyds Register
Chalk Mesozoic 2068.000 2048.104 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2104.000 2084.101 Lloyds Register
Cromer Knoll Mesozoic 2418.000 2398.002 Lloyds Register
Rodby Mesozoic 2418.000 2398.002 Lloyds Register
Sola 2446.000 2425.988 Lloyds Register
Valhall Mesozoic 2478.000 2457.973 Lloyds Register
Humber Mesozoic 2586.000 2565.915 Lloyds Register
Kimmeridge Clay 2586.000 2565.915 Lloyds Register
Heather Mesozoic 2671.000 2650.843 Lloyds Register
Smith Bank Mesozoic 2708.000 2687.800 Lloyds Register
Heron Palaeozoic 2708.000 2687.800 Lloyds Register
Turbot Anhydrite Palaeozoic 2749.000 2728.754 Lloyds Register
Zechstein Palaeozoic 2749.000 2728.754 Lloyds Register

Lithology Intervals

21/12- 1 Curve: SANDCOUNT 32 intervals  ·  MD 1566.367 – 2712.263 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/NSTA Centr...
Sandstone (17)
Limestone (15)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
21/12- 1 8 14 2 24 24 4 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- 1 Cuttings 304.8 2735.58 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/12- 1 1257.452392578125 2713.32958984375 5 0 2026-08-06 10:12:28.55577+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/12- 1
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
caliper CALI CGG Digital Well Logs 1275.2832 2713.1772 9436
comp_sonic DT CGG Digital Well Logs 1277.5692000000001 2711.196 9408
deep_resistivity ILD CGG Digital Well Logs 1276.9596000000001 2708.9100000000003 9397
gamma_ray GR CGG Digital Well Logs 1257.4524000000001 2704.338 9495
sp SP CGG Digital Well Logs 1276.0452 2713.3296 9432

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/12- 1 10 2767.279 2747.012 D:\BigSpatial\nsta_raw\CGG_Deviation\21-12-1 1042bw-CGG_Deviation.xlsx

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