Well Data Manager / Well Summary / 21/01a- 12

21/01a- 12

Decommissioned

Well Header

Well No
21/01a- 12
NSTA DEN No
2236
Well Name
--
Drill Seq No
12
Quadrant / Block
21 / 1 a
Surface Location
57.982242, 0.153814
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Original Operator
--
Sub Area Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Licence No
P241
Licence Type
Production
Spud Date
1983-10-14
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/01a- 12 Original
Abandoned Phase 3 Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
F
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.994
Ground Elev (m)
--
Water Depth (m)
134.00
TD MD (m)
4628.083
TD TVDSS (m)
4602.231
TD Datum Depth (m)
25.000
TD Datum Type
Kelly Bushing
Spud Date
1983-10-14
TD Reached
1983-12-30
Completion Date
1984-01-14
Release Date
1988-01-14

Formation Tops (16)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/01a- 12 Ekofisk Mesozoic 2408.000 2383.006 Lloyds Register
Chalk Mesozoic 2408.000 2383.006 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2459.000 2434.006 Lloyds Register
Cromer Knoll Mesozoic 3142.000 3117.006 Lloyds Register
Rodby Mesozoic 3142.000 3117.006 Lloyds Register
Sola 3160.000 3135.006 Lloyds Register
Britannia Sandstone Mesozoic 3226.000 3201.006 Lloyds Register
Valhall Mesozoic 3344.000 3319.006 Lloyds Register
Humber Mesozoic 4148.000 4123.006 Lloyds Register
Kimmeridge Clay 4148.000 4123.006 Lloyds Register
Piper Mesozoic 4314.000 4289.006 Lloyds Register
Heather Mesozoic 4367.000 4342.006 Lloyds Register
Sgiath Mesozoic 4595.000 4570.006 Lloyds Register
Pentland Mesozoic 4607.000 4582.006 Lloyds Register
Rattray Volcanics Mesozoic 4607.000 4582.006 Lloyds Register
Fladen Mesozoic 4607.000 4582.006 Lloyds Register

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
21/01a- 12 4 11 1 35 16 3 0 1 0 View

Hydrocarbon Occurrence (3)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/01a- 12 Oil shows OS Kimmeridge Clay Formation 4176.205008 -- 134 m thick
21/01a- 12 Oil shows OS Kimmeridge Clay Formation 4309.710456 -- 4 m thick
21/01a- 12 Oil shows OS Kimmeridge Clay Formation 4314.209304 -- 42 m thick

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/01a- 12 Cuttings 279.99 4626.96 -- -- .

Wireline Log Inventory (Ingested Curves)

No wireline log curves ingested for this well.

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

No scanned LAS source files matched to this well.

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/01a- 12 0 -- -- --

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