Well Data Manager / Well Summary / 21/26- 1

21/26- 1

Decommissioned

Well Header

Well No
21/26- 1
NSTA DEN No
110
Well Name
--
Drill Seq No
1
Quadrant / Block
21 / 26
Surface Location
57.082381, 0.070912
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
--
Original Operator
--
Sub Area Operator
SHELL U.K. LIMITED
Licence No
P14
Licence Type
Production
Spud Date
1968-04-10
Source File
UKCS_Wells_ConvtoWGS84.shp
Imported
2026-05-22 15:28

Wellbores (1)

21/26- 1D Sidetrack D
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)
25.603
Ground Elev (m)
--
Water Depth (m)
87.48
TD MD (m)
2489.302
TD TVDSS (m)
0.000
TD Datum Depth (m)
25.603
TD Datum Type
Kelly Bushing
Spud Date
1968-04-10
TD Reached
1968-06-14
Completion Date
1968-06-26
Release Date
1972-06-26

Formation Tops (25)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/26- 1D Horda Cenozoic 519.000 493.384 Lloyds Register
Upper Tay Sandstone 519.000 493.384 Lloyds Register
Stronsay Cenozoic 519.000 493.384 Lloyds Register
Lower Tay Sandstone 780.000 754.381 Lloyds Register
Balder Cenozoic 882.000 856.380 Lloyds Register
Moray Mesozoic 882.000 856.380 Lloyds Register
Balder Tuff Cenozoic 887.000 861.380 Lloyds Register
Dornoch Mesozoic 910.000 884.380 Lloyds Register
Upper Dornoch Sandstone Cenozoic 919.000 893.380 Lloyds Register
Sele Mesozoic 941.000 915.380 Lloyds Register
Montrose Mesozoic 995.000 969.379 Lloyds Register
Lista Mesozoic 995.000 969.379 Lloyds Register
Maureen Mesozoic 1058.000 1032.379 Lloyds Register
Chalk Mesozoic 1065.000 1039.379 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1065.000 1039.379 Lloyds Register
Cromer Knoll Mesozoic 1437.000 1411.313 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 1437.000 1411.313 Lloyds Register
Smith Bank Mesozoic 1467.000 1441.304 Lloyds Register
Heron Palaeozoic 1467.000 1441.304 Lloyds Register
Zechstein Palaeozoic 1763.000 1736.479 Lloyds Register
Shearwater Salt 1763.000 1736.479 Lloyds Register
Halibut Carbonate Palaeozoic 2465.000 2435.963 Lloyds Register
Kupferschiefer Palaeozoic 2484.000 2454.895 Lloyds Register
Old Red Sandstone 2485.000 2455.892 Lloyds Register
Old Red Palaeozoic 2485.000 2455.892 Lloyds Register

Lithology Intervals

21/26- 1D Curve: SANDCOUNT 15 intervals  ·  MD 196.596 – 1437.132 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/NSTA Centr...
Sandstone (13)
Limestone (2)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
21/26- 1D 8 13 4 16 25 10 2 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (3)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/26- 1D Cuttings 195.07 2511.55 -- -- .
21/26- 1D Core #1 2471.93 2481.99 -- -- .
21/26- 1D Core #2 2513.08 2514.9 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/26- 1D 122.07240295410156 2509.72314453125 6 0 2026-08-06 10:22:59.353059+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/26- 1D
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 455.21880000000004 2508.504 13310
caliper CALI CGG Digital Well Logs 454.91400000000004 2508.6564000000003 13305
caliper CALY CGG Digital Well Logs 454.76160000000004 1471.8792 6659
caliper CAL CGG Digital Well Logs 454.91400000000004 2509.5708 13378
comp_sonic DT CGG Digital Well Logs 175.41240000000002 2509.7232 15039
deep_resistivity ILD CGG Digital Well Logs 175.56480000000002 2506.5228 15186
density_correction DRHO CGG Digital Well Logs 455.82840000000004 2508.6564000000003 13307
gamma_ray GR CGG Digital Well Logs 122.0724 2501.0364 15611
gamma_ray GRD CGG Digital Well Logs 1112.52 2503.9320000000002 8992

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/26- 1D 31 2514.905 2485.694 D:\BigSpatial\nsta_raw\CGG_Deviation\21-26-1D 1071cq_CGG-Deviation.xlsx

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