Well Data Manager / Well Summary / 29/08a- 4

29/08a- 4

Decommissioned

Well Header

Well No
29/08a- 4
NSTA DEN No
3085
Well Name
--
Drill Seq No
4
Quadrant / Block
29 / 8 a
Surface Location
56.806225, 1.450215
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
SHELL U.K. LIMITED
Original Operator
--
Sub Area Operator
SHELL U.K. LIMITED
Licence No
P12
Licence Type
Production
Spud Date
1987-01-29
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

29/08a- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
D
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
27.432
Ground Elev (m)
--
Water Depth (m)
97.54
TD MD (m)
4401.312
TD TVDSS (m)
4346.448
TD Datum Depth (m)
27.432
TD Datum Type
Kelly Bushing
Spud Date
1987-01-29
TD Reached
1987-04-15
Completion Date
1987-05-06
Release Date
1991-05-06

Formation Tops (23)

Wellbore Formation Era MD (m) TVDSS (m) Provider
29/08a- 4 Horda Cenozoic 2281.000 2253.500 Lloyds Register
Stronsay Cenozoic 2281.000 2253.500 Lloyds Register
Balder Cenozoic 2658.000 2630.378 Lloyds Register
Balder Tuff Cenozoic 2658.000 2630.378 Lloyds Register
Moray Mesozoic 2658.000 2630.378 Lloyds Register
Sele Mesozoic 2681.000 2653.371 Lloyds Register
Forties Sandstone Mesozoic 2707.000 2679.364 Lloyds Register
Lista Mesozoic 2722.000 2694.359 Lloyds Register
Montrose Mesozoic 2722.000 2694.359 Lloyds Register
Balmoral Sandstone Cenozoic 2752.000 2724.350 Lloyds Register
Maureen Mesozoic 2813.000 2785.328 Lloyds Register
Chalk Mesozoic 2851.000 2823.312 Lloyds Register
Ekofisk Mesozoic 2851.000 2823.312 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2947.000 2919.256 Lloyds Register
Cromer Knoll Mesozoic 3572.000 3543.961 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 3572.000 3543.961 Lloyds Register
Kimmeridge Clay 3895.000 3866.765 Lloyds Register
Humber Mesozoic 3895.000 3866.765 Lloyds Register
Heather Mesozoic 4018.000 3989.680 Lloyds Register
Fladen Mesozoic 4141.000 4112.558 Lloyds Register
Pentland Mesozoic 4141.000 4112.558 Lloyds Register
Heron Palaeozoic 4200.000 4171.487 Lloyds Register
Skagerrak Mesozoic 4200.000 4171.487 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
29/08a- 4 8 12 3 17 23 3 0 1 4 View

Hydrocarbon Occurrence (4)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
29/08a- 4 DST DST 3 -- 4141.0 4176.4 Not used for labelling, multiple DSTs in same play / Middle Jurassic
29/08a- 4 DST DST 4 -- 4141.0 4200.1 Label / Middle Jurassic
29/08a- 4 DST DST 1 -- 4232.1 4252.6 Not used for labelling, multiple DSTs in same play / Triassic
29/08a- 4 DST DST 2 -- 4232.1 4339.1 Label / Triassic

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
29/08a- 4 Cuttings 954.02 4401.31 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
29/08a- 4 106.07039642333984 4397.044921875 6 0 2026-08-06 18:14:34.07062+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
29/08a- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN CGG Digital Well Logs 3899.154 4385.1576000000005 3153
caliper CAL CGG Digital Well Logs 927.6588 4384.700400000001 22590
caliper CALI CGG Digital Well Logs 3898.8492 4385.1576000000005 3192
comp_sonic AC CGG Digital Well Logs 927.9636 4397.044800000001 22700
density_correction CORR CGG Digital Well Logs 3899.6112000000003 4385.1576000000005 3150
gamma_ray GR CGG Digital Well Logs 106.0704 4395.0636 28144
gamma_ray GRD CGG Digital Well Logs 3896.7156 4382.262000000001 3187
neutron_por CNC CGG Digital Well Logs 3899.154 4379.823600000001 3155
potassium K CGG Digital Well Logs 3896.106 4382.1096 3190
thorium TH CGG Digital Well Logs 3896.106 4382.1096 3190

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
29/08a- 4 142 4401.312 4372.562 D:\BigSpatial\nsta_raw\CGG_Deviation\29-8a-4 7117ak_CGG-Deviation.xlsx

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