54/01b- 4

Decommissioned

Well Header

Well No
54/01b- 4
NSTA DEN No
4312
Well Name
--
Drill Seq No
4
Quadrant / Block
54 / 1 b
Surface Location
52.994486, 3.084678
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
CHRYSAOR PRODUCTION (U.K.) LIMITED
Original Operator
--
Sub Area Operator
CHRYSAOR PRODUCTION (U.K.) LIMITED
Licence No
P531
Licence Type
Production
Spud Date
1991-01-14
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

54/01b- 4 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
36.576
Ground Elev (m)
--
Water Depth (m)
32.31
TD MD (m)
1850.440
TD TVDSS (m)
1662.350
TD Datum Depth (m)
36.576
TD Datum Type
Kelly Bushing
Spud Date
1991-01-14
TD Reached
1991-02-01
Completion Date
1991-04-04
Release Date
1995-04-04
54/01b- 4Z Sidetrack Z parent: 54/01b- 4
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
36.576
Ground Elev (m)
--
Water Depth (m)
32.31
TD MD (m)
2844.698
TD TVDSS (m)
2611.330
TD Datum Depth (m)
36.576
TD Datum Type
Kelly Bushing
Spud Date
1991-02-04
TD Reached
1991-02-22
Completion Date
1991-03-01
Release Date
1995-03-01

Formation Tops (21)

Wellbore Formation Era MD (m) TVDSS (m) Provider
54/01b- 4 Unknown 69.000 32.424 BGS LithoStrat Upper
Unknown 369.000 332.424 BGS LithoStrat Upper
Chalk Mesozoic 760.000 723.424 BGS LithoStrat Upper
Red Chalk Mesozoic 1348.000 1311.424 BGS LithoStrat Upper
Speeton Clay 1481.000 1444.424 BGS LithoStrat Upper
Spilsby Sandstone 1714.000 1677.424 BGS LithoStrat Upper
Bunter Sandstone Mesozoic 1722.000 1685.424 BGS LithoStrat Upper
Bunter Shale Mesozoic 1951.000 1914.424 BGS LithoStrat Upper
Brockelschiefer Member 2282.000 2245.424 BGS LithoStrat Upper
Leine Evaporite Palaeozoic 2302.000 2265.424 BGS LithoStrat Upper
Plattendolomit Palaeozoic 2312.000 2275.424 BGS LithoStrat Upper
Grauer Salzton Palaeozoic 2361.000 2324.424 BGS LithoStrat Upper
Deckanhydrit 2362.000 2325.424 BGS LithoStrat Upper
Stassfurt Halite Palaeozoic 2363.000 2326.424 BGS LithoStrat Upper
Basalanhydrit Palaeozoic 2385.000 2348.424 BGS LithoStrat Upper
Hauptdolomit Palaeozoic 2414.000 2377.424 BGS LithoStrat Upper
Werraanhydrit Palaeozoic 2439.000 2402.424 BGS LithoStrat Upper
Zechsteinkalk Palaeozoic 2598.000 2561.424 BGS LithoStrat Upper
Kupferschiefer Palaeozoic 2604.000 2567.424 BGS LithoStrat Upper
Leman Sandstone 2605.000 2568.424 BGS LithoStrat Upper
Unknown 2763.000 2726.424 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
54/01b- 4 6 5 0 21 21 3 0 1 0 View
54/01b- 4Z 0 0 0 0 0 3 0 0 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
54/01b- 4 Cuttings 371.86 2843.78 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
54/01b- 4Z 1318.86962890625 2842.56494140625 9 0 2026-08-06 18:55:49.820277+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
54/01b- 4Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density ZDEN CGG Digital Well Logs 2310.384 2841.6504 3487
caliper CAL CGG Digital Well Logs 2310.6888 2842.5648 3491
comp_sonic AC CGG Digital Well Logs 1376.172 2833.116 4442
deep_resistivity RILD CGG Digital Well Logs 1377.0864000000001 2839.6692000000003 4487
density_correction ZCOR CGG Digital Well Logs 2310.6888 2842.4124 3490
gamma_ray GR CGG Digital Well Logs 1318.8696 2835.0972 9950
gamma_ray GRD CGG Digital Well Logs 1408.1760000000002 2835.0972 9364
med_resistivity RILM CGG Digital Well Logs 1377.0864000000001 2841.0408 4515
neutron_por CNC CGG Digital Well Logs 2310.5364 2837.5356 3459
pef PE CGG Digital Well Logs 2310.5364 2842.4124 3491
potassium K CGG Digital Well Logs 2295.1440000000002 2834.9448 3543
thorium TH CGG Digital Well Logs 2295.1440000000002 2834.9448 3543

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
54/01b- 4 0 -- -- --
54/01b- 4Z 0 -- -- --

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