49/11a-A5

Decommissioned

Well Header

Well No
49/11a-A5
NSTA DEN No
3307
Well Name
--
Drill Seq No
5
Quadrant / Block
49 / 11 a
Surface Location
53.539672, 2.014396
Source Datum
ED50
Subsea Well
No
Platform
A
Slot No
3
Operator
SPIRIT ENERGY NORTH SEA LIMITED
Original Operator
--
Sub Area Operator
SPIRIT ENERGY NORTH SEA LIMITED
Licence No
P28
Licence Type
Production
Spud Date
1987-11-30
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

49/11a-A5 Original
Current Intent
Development
Original Intent
Development
Flow Class
Gas Well
Dev Type
Producer
Convention
--
Primary Target
W
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
37.490
Ground Elev (m)
--
Water Depth (m)
27.74
TD MD (m)
3990.750
TD TVDSS (m)
2925.470
TD Datum Depth (m)
37.490
TD Datum Type
Kelly Bushing
Spud Date
1987-11-30
TD Reached
1988-01-07
Completion Date
1988-05-21
Release Date
1992-05-21

Formation Tops (20)

Wellbore Formation Era MD (m) TVDSS (m) Provider
49/11a-A5 Unknown 65.000 27.510 BGS LithoStrat Upper
Chalk Mesozoic 345.000 307.510 BGS LithoStrat Upper
Chalk Mesozoic 407.000 369.510 BGS LithoStrat Upper
Lias Mesozoic 517.000 479.510 BGS LithoStrat Upper
Triton Anhydrite Mesozoic 881.000 843.510 BGS LithoStrat Upper
Keuper Halite Member Mesozoic 1237.000 1199.510 BGS LithoStrat Upper
Dudgeon Saliferous 1262.000 1224.510 BGS LithoStrat Upper
Zechstein Palaeozoic 1440.000 1402.510 BGS LithoStrat Upper
Hauptanhydrit Palaeozoic 3410.000 3372.510 BGS LithoStrat Upper
Plattendolomit Palaeozoic 3416.000 3378.510 BGS LithoStrat Upper
Grauer Salzton Palaeozoic 3448.000 3410.510 BGS LithoStrat Upper
Deckanhydrit 3449.000 3411.510 BGS LithoStrat Upper
Stassfurt Halite Palaeozoic 3450.000 3412.510 BGS LithoStrat Upper
Basalanhydrit Palaeozoic 3668.000 3630.510 BGS LithoStrat Upper
Hauptdolomit Palaeozoic 3673.000 3635.510 BGS LithoStrat Upper
Werraanhydrit Palaeozoic 3694.000 3656.510 BGS LithoStrat Upper
Zechsteinkalk Palaeozoic 3725.000 3687.510 BGS LithoStrat Upper
Kupferschiefer Palaeozoic 3732.000 3694.510 BGS LithoStrat Upper
Leman Sandstone 3733.000 3695.510 BGS LithoStrat Upper
Unknown 3987.000 3949.510 BGS LithoStrat Upper

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
49/11a-A5 0 0 0 20 20 0 4 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (5)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
49/11a-A5 Cuttings 414.53 3992.88 -- -- .
49/11a-A5 Core #1 3739.9 3746.6 -- -- preserved samples taken .
49/11a-A5 Core #2 3750.56 3763.06 -- -- .
49/11a-A5 Core #3 3764.58 3775.56 -- -- .
49/11a-A5 Core #4 3777.69 3825.85 -- -- .

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
49/11a-A5 0 -- -- --

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