Well Data Manager / Well Summary / 20/02- 4

20/02- 4

Decommissioned

Well Header

Well No
20/02- 4
NSTA DEN No
2255
Well Name
--
Drill Seq No
4
Quadrant / Block
20 / 2
Surface Location
57.877658, -0.659944
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
CNOOC PETROLEUM EUROPE LIMITED
Original Operator
--
Sub Area Operator
CNOOC PETROLEUM EUROPE LIMITED
Licence No
P317
Licence Type
Production
Spud Date
1983-11-10
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

20/02- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.994
Ground Elev (m)
--
Water Depth (m)
113.08
TD MD (m)
4715.870
TD TVDSS (m)
4665.878
TD Datum Depth (m)
24.994
TD Datum Type
Kelly Bushing
Spud Date
1983-11-10
TD Reached
1984-02-28
Completion Date
1984-03-06
Release Date
1988-03-06

Formation Tops (29)

Wellbore Formation Era MD (m) TVDSS (m) Provider
20/02- 4 Moray Mesozoic 592.000 567.001 Lloyds Register
Beauly Cenozoic 592.000 567.001 Lloyds Register
Dornoch Mesozoic 651.000 626.001 Lloyds Register
Sele Mesozoic 753.000 728.000 Lloyds Register
Forties Sandstone Mesozoic 997.000 971.992 Lloyds Register
Montrose Mesozoic 1095.000 1069.988 Lloyds Register
Lista Mesozoic 1095.000 1069.988 Lloyds Register
Balmoral Sandstone Cenozoic 1269.000 1243.985 Lloyds Register
Maureen Mesozoic 1405.000 1379.983 Lloyds Register
Ekofisk Mesozoic 1440.000 1414.982 Lloyds Register
Chalk Mesozoic 1440.000 1414.982 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1495.000 1469.981 Lloyds Register
Cromer Knoll Mesozoic 2164.000 2138.776 Lloyds Register
Rodby Mesozoic 2164.000 2138.776 Lloyds Register
Sola 2228.000 2202.721 Lloyds Register
Valhall Mesozoic 2503.000 2477.474 Lloyds Register
Punt Sandstone Mesozoic 3058.000 3031.484 Lloyds Register
Wick Sandstone 3058.000 3031.484 Lloyds Register
Kimmeridge Clay 3177.000 3150.395 Lloyds Register
Humber Mesozoic 3177.000 3150.395 Lloyds Register
Burns Sandstone Mesozoic 3543.000 3515.994 Lloyds Register
Sgiath Mesozoic 4414.000 4378.922 Lloyds Register
Smith Bank Mesozoic 4419.000 4383.826 Lloyds Register
Heron Palaeozoic 4419.000 4383.826 Lloyds Register
Zechstein Palaeozoic 4469.000 4432.773 Lloyds Register
Turbot Anhydrite Palaeozoic 4469.000 4432.773 Lloyds Register
Halibut Carbonate Palaeozoic 4547.000 4508.877 Lloyds Register
Basement 4592.000 4552.628 Lloyds Register
Palaeozoic Pre-Cambrian 4592.000 4552.628 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
20/02- 4 8 17 4 41 29 2 6 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (7)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
20/02- 4 Cuttings 893.06 4681.73 -- -- .
20/02- 4 Core #1 3620.11 3624.68 -- -- .
20/02- 4 Core #2 3681.98 3689.85 -- -- .
20/02- 4 Core #3 3729.84 3731.79 -- -- .
20/02- 4 Core #4 3733.19 3752.21 -- -- .
20/02- 4 Core #5 3752.21 3771.26 -- -- .
20/02- 4 Core #6 3771.29 3786.71 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
20/02- 4 91.74479675292969 4693.310546875 8 0 2026-08-06 09:51:03.341386+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
20/02- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 2894.076 4693.3104 11807
caliper CALI CGG Digital Well Logs 2893.9236 4690.7196 11791
comp_sonic DT CGG Digital Well Logs 568.1472 4685.6904 26974
deep_resistivity ILD CGG Digital Well Logs 569.0616 4692.2436 27041
density_correction DRHO CGG Digital Well Logs 2893.9236 4693.3104 11808
gamma_ray GRD CGG Digital Well Logs 2893.7712 4687.519200000001 11768
gamma_ray GR CGG Digital Well Logs 91.7448 4682.9472000000005 30125
neutron_por NPHI CGG Digital Well Logs 2893.9236 4689.348 11782
sp SP CGG Digital Well Logs 567.5376 1505.1024 6153

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
20/02- 4 601 4693.615 4650.970 D:\BigSpatial\nsta_raw\CGG_Deviation\20-2-4 7241af-CGG_Deviation.xlsx

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