Well Data Manager / Well Summary / 21/13b- 4

21/13b- 4

Decommissioned

Well Header

Well No
21/13b- 4
NSTA DEN No
4864
Well Name
--
Drill Seq No
4
Quadrant / Block
21 / 13 b
Surface Location
57.500567, 0.428181
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
SHELL U.K. LIMITED
Original Operator
--
Sub Area Operator
SHELL U.K. LIMITED
Licence No
P349
Licence Type
Production
Spud Date
1992-11-09
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/13b- 4 Original
Abandoned Phase 3 Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
X
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.994
Ground Elev (m)
--
Water Depth (m)
87.48
TD MD (m)
3353.105
TD TVDSS (m)
3326.587
TD Datum Depth (m)
24.994
TD Datum Type
Kelly Bushing
Spud Date
1992-11-09
TD Reached
1992-12-23
Completion Date
1992-12-25
Release Date
1996-12-25

Formation Tops (32)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/13b- 4 Stronsay Cenozoic 1669.000 1644.006 Lloyds Register
Horda Cenozoic 1669.000 1644.006 Lloyds Register
Lower Tay Sandstone 2008.000 1983.006 Lloyds Register
Balder Tuff Cenozoic 2012.000 1987.006 Lloyds Register
Balder Cenozoic 2012.000 1987.006 Lloyds Register
Moray Mesozoic 2012.000 1987.006 Lloyds Register
Sele Mesozoic 2050.000 2025.006 Lloyds Register
Cromarty Sandstone Cenozoic 2060.000 2035.006 Lloyds Register
Forties Sandstone Mesozoic 2074.000 2049.006 Lloyds Register
Montrose Mesozoic 2092.000 2067.006 Lloyds Register
Lista Mesozoic 2092.000 2067.006 Lloyds Register
Balmoral Sandstone Cenozoic 2103.000 2078.006 Lloyds Register
Andrew Sandstone Cenozoic 2217.000 2192.006 Lloyds Register
Maureen Mesozoic 2294.000 2269.006 Lloyds Register
Maureen Reworked Unit Mesozoic 2303.000 2278.006 Lloyds Register
Ekofisk Mesozoic 2319.000 2294.006 Lloyds Register
Chalk Mesozoic 2319.000 2294.006 Lloyds Register
Tor Mesozoic 2391.000 2366.006 Lloyds Register
Mackerel Mesozoic 2472.000 2447.006 Lloyds Register
Herring Mesozoic 2658.000 2633.006 Lloyds Register
Plenus Marl 2706.000 2681.006 Lloyds Register
Hidra Mesozoic 2708.000 2683.006 Lloyds Register
Valhall Mesozoic 2746.000 2721.006 Lloyds Register
Cromer Knoll Mesozoic 2746.000 2721.006 Lloyds Register
Humber Mesozoic 3096.000 3071.006 Lloyds Register
Kimmeridge Clay 3096.000 3071.006 Lloyds Register
Heather Mesozoic 3154.000 3129.006 Lloyds Register
Fulmar Mesozoic 3170.000 3145.006 Lloyds Register
Heron Palaeozoic 3258.000 3233.006 Lloyds Register
Skagerrak Mesozoic 3258.000 3233.006 Lloyds Register
Shearwater Salt 3322.000 3297.006 Lloyds Register
Zechstein Palaeozoic 3322.000 3297.006 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
21/13b- 4 8 16 8 56 32 1 0 1 0 View

Hydrocarbon Occurrence (5)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/13b- 4 Oil shows OS Andrew Sandstone unit 2092.1472 -- 202 m thick
21/13b- 4 Oil shows OS Ekofisk Formation 2318.9184 -- 4 m thick
21/13b- 4 Oil shows OS Ekofisk Formation 2322.576 -- 55 m thick
21/13b- 4 Oil shows OS Ekofisk Formation 2377.44 -- 6 m thick
21/13b- 4 Oil shows OS Ekofisk Formation 2383.536 -- 8 m thick

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/13b- 4 Cuttings 749.81 3377.18 -- -- --

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
21/13b- 4 0 -- -- --

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