204/23- 1

Decommissioned

Well Header

Well No
204/23- 1
NSTA DEN No
3133
Well Name
--
Drill Seq No
1
Quadrant / Block
204 / 23
Surface Location
60.238542, -4.497939
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
BRITOIL LIMITED
Original Operator
--
Sub Area Operator
BRITOIL LIMITED
Licence No
P557
Licence Type
Production
Spud Date
1987-05-03
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

204/23- 1 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Gas and Condensate Well
Dev Type
--
Convention
--
Primary Target
C
Well Seq
WB1
Datum Type
Rotary Table
Datum Elev (m)
25.910
Ground Elev (m)
--
Water Depth (m)
508.00
TD MD (m)
3881.990
TD TVDSS (m)
0.000
TD Datum Depth (m)
25.910
TD Datum Type
Rotary Table
Spud Date
1987-05-03
TD Reached
1987-06-22
Completion Date
1987-07-17
Release Date
1991-07-17

Formation Tops (5)

Wellbore Formation Era MD (m) TVDSS (m) Provider
204/23- 1 Horda Cenozoic 1256.000 696.057 Ternan Atlantic Margin
Shetland Mesozoic 2632.000 2071.345 Ternan Atlantic Margin
Cruiser 3642.000 3080.544 Ternan Atlantic Margin
Humber Mesozoic 3784.000 3222.398 Ternan Atlantic Margin
Precambrian Basement 3790.000 3228.394 Ternan Atlantic Margin

Lithology Intervals

204/23- 1 Curve: SANDCOUNT 157 intervals  ·  MD 1151.230 – 3883.152 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/WoS_ArcGIS...
Sandstone (84)
Limestone (64)
Coal (8)
Metamorphic (1)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
204/23- 1 7 9 9 17 5 3 5 1 1 View

Hydrocarbon Occurrence (3)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
204/23- 1 Gas shows GS Maureen Formation 2039.5996800000003 -- 721 m thick
204/23- 1 Gas shows GCS METB 3789.68508 -- 91 m thick
204/23- 1 DST DST 1A -- 3840.18 3870.05 Label / Basement

Rock Samples (15)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
204/23- 1 Cuttings 1169.97 3879.0 -- -- .
204/23- 1 Core #1 3762.94 3772.51 -- -- UKCS 49 .
204/23- 1 Core #2 3844.96 3848.62 φ 13.6% (n=1) · Density 2.69 (n=1) · REDWOOD COREX SERVICES LTD Whole core samples .
204/23- 1 ↳ Plug vmb 2 3848.18 -- φ 13.6% · Density 2.69 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 Core #3 3848.95 3859.96 φ 1.5% (n=5) · Density 2.68 (n=5) · REDWOOD COREX SERVICES LTD Whole core samples .
204/23- 1 ↳ Plug vmc 1 3849.18 -- φ 2.7% · Density 2.65 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 ↳ Plug vmc 2 3849.68 -- φ 0.9% · Density 2.65 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 ↳ Plug vmc 3 3851.76 -- φ 1.5% · Density 2.85 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 ↳ Plug vmc 4 3853.25 -- φ 1.6% · Density 2.64 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 ↳ Plug vmc 5 3855.51 -- φ 0.6% · Density 2.63 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 Core #4 3860.96 3865.26 φ 0.8% (n=1) · Density 2.64 (n=1) · REDWOOD COREX SERVICES LTD Whole core samples .
204/23- 1 ↳ Plug vmd 1 3861.96 -- φ 0.8% · Density 2.64 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 Core #5 3865.14 3878.55 φ 1.9% (n=2) · Density 2.79 (n=2) · REDWOOD COREX SERVICES LTD Whole core samples .
204/23- 1 ↳ Plug vme 1 3871.71 -- φ 3.1% · Density 2.75 · REDWOOD COREX SERVICES LTD Whole core samples --
204/23- 1 ↳ Plug vme 2 3872.61 -- φ 0.6% · Density 2.82 · REDWOOD COREX SERVICES LTD Whole core samples --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
204/23- 1 534.0 3881.923095703125 10 0 2026-08-06 20:37:15.544518+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
204/23- 1
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DENS UKCS JDWL 30th Round 3695.9952 3881.9232 1221
caliper CALI UKCS JDWL 30th Round 1145.886 3881.9232 17058
comp_sonic DTC UKCS JDWL 30th Round 1167.984 3869.8836 17619
deep_resistivity RDEP UKCS JDWL 30th Round 1150.9152 3879.942 17870
density_correction DENC UKCS JDWL 30th Round 3695.9952 3881.9232 1221
gamma_ray GR UKCS JDWL 30th Round 534.0 3875.9796 21924
med_resistivity RMED UKCS JDWL 30th Round 1150.9152 3879.942 17870
neutron_por NEUT UKCS JDWL 30th Round 3695.9952 3875.9796 1182
pef PEF UKCS JDWL 30th Round 3695.9952 3881.9232 1221
shallow_resistivity RSHAL UKCS JDWL 30th Round 1150.9152 2167.8804 6674

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
204/23- 1 119 3831.600 3269.960 G:\NSTA_BigFiles\NSTA_Packages\UKCS_JDWL_30thRound\WOS\204_23-1_DEVIATION_SURVEY_QC.xlsm

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